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|
; Disassembled ddtz.com, version "DDT/Z [8101]"
; with modified relocater.
;
; Build steps:
; - Assemble to a .REL file with M80 or a compatible assembler.
; - Use Digital Research Link-80 to generate a .PRL file (op switch).
; - Cut the .PRL header (first 256 byte) end rename the result to DDTZ.COM.
;-------------------------------------------------------------------------------
; Relocation loader
;
TPA equ 0100h
cseg
.phase TPA
jp start
ldr_end:
ldr_size equ $ - TPA
current_phase defl $
.dephase
current_cseg defl $
;-------------------------------------------------------------------------------
; DDT/Z core
;
; Some greneral definitions
TAB equ 9
LF equ 10
CR equ 13
; CP/M memory layout
BDOS equ 5
dfcb1 equ 05ch
dfcb2 equ 06ch
DMA_BUF equ 080h
TPA equ 0100h
; BDOS function calls
BDOS_CIN equ 1 ;Console Input
BDOS_COUT equ 2 ;Console Output
BDOS_PSTR equ 9 ;Print String
BDOS_CBUF equ 10 ;Read Console Buffer
BDOS_CSTAT equ 11 ;Get Console Status
BDOS_OPEN equ 15 ;Open File
BDOS_CLOSE equ 16 ;Close File
BDOS_DELETE equ 19 ;Delete File
BDOS_READ equ 20 ;Read Sequential
BDOS_WRITE equ 21 ;Write Sequential
BDOS_CREATE equ 22 ;Make File
BDOS_SETDMA equ 26 ;Set DMA Address
; ddtz specific definitions
STACK_SIZE equ 64 ;ddtz internal stack
CONBUF_SIZE equ 80 ;Size of console input buffer
EXPR_BUF_SIZE equ 128 ;expressen buffer for conditional breakpoints
BP_CNT equ 12 ;Number of breakpoints
BP_SIZE equ 8 ;Size of a breakpoint record
YREG_CNT equ 10 ;Number of Y registers (0..9)
;-------------------------------------------------------------------------------
ddtz_base:
jp ddtz_bdos
l0003h:
rst 30h
sub_0004h:
nop
ret
ddtz_bdos:
jp 0
current_cseg defl $ - current_cseg
.phase current_phase + current_cseg
signon:
db 'DDT/180',TAB
db '[8101] 003',CR,LF,'$'
msgz80:
db 'Z80 or better required!',cr,lf,'$'
current_phase defl $
.dephase
current_cseg defl $
ds STACK_SIZE - (current_phase - signon)
stack:
reg.l2: db 000h
reg.h2: db 000h
reg.e2: db 000h
reg.d2: db 000h
reg.c2: db 000h
reg.b2: db 000h
reg.f2: db 000h
reg.a2: db 000h
l004eh: db 000h
reg.i: db 000h
reg.iy: dw 0000h
reg.ix: dw 0000h
reg.f: db 000h
reg.a: db 000h
reg.c: db 000h
reg.b: db 000h
reg.e: db 000h
reg.d: db 000h
reg.l: db 000h
reg.h: db 000h
reg_sp: dw TPA
reg.iff:
db 0f3h
db 0c3h
reg.pc: dw TPA
var.$: dw 0000h
var.@: dw 0
error_func:dw l0146h
cmd_rpt:dw mainloop
conbuf:
db CONBUF_SIZE
ld sp,stack
exx
ld de,ddtz_base
or a
sbc hl,de
add hl,de
jr c,l0079h
ex de,hl
l0079h:
ld de,TPA
l007ch:
dec hl
ld (hl),000h
ld a,h
sub d
ld b,a
ld a,l
sub e
or b
jr nz,l007ch
ld a,i
ld (reg.i),a
ld a,0f3h
jp po,l0093h
ld a,0fbh
l0093h:
ld (reg.iff),a
call sub_0004h
ld hl,ddtz_base
ld l,000h
ld (reg_sp),hl
call cpy_fcb2
ld a,(dfcb1+1)
cp ' '
ld hl,0
call nz,read_file
jr mainloop
ds CONBUF_SIZE + 3 - ($ - conbuf)
CMDTAB:
dw cmd_@ ;examine/substitute the displacement register @
dw cmd_A ;Assemble
dw cmd_B ;Breakpoints display/set/clear
dw cmd_C ;trace over Calls
dw cmd_D ;Display memory in hex and ascii
dw ERROR ;
dw cmd_F ;specify Filename and command line
dw cmd_G ;Go
dw cmd_H ;compute Hex and other expressions
dw cmd_I ;Input a byte from port
dw ERROR ;
dw ERROR ;
dw cmd_L ;List disassembled code
dw cmd_M ;Move memory [and verify]
dw ERROR ;
dw cmd_O ;Output a byte to port
dw ERROR ;
dw cmd_Q ;Qery memory for byte string
dw cmd_R ;Read binary or hex file and/or symbol file
dw cmd_S ;Substitute memory
dw cmd_T ;Trace
dw ERROR ;
dw cmd_V ;Verify (compare) two memory areas
dw cmd_W ;Write a file to disk
dw cmd_X ;eXamine [and substitute] registers
dw cmd_Y ;examine [and substitute] Y variables
dw cmd_Z ;Zap (fill) memory with a byte string
mainloop:
ld sp,stack
ld hl,l0146h
ld (error_func),hl
ld hl,(reg.pc)
ld (var.$),hl
call bp_clr_temporary
ld hl,(cmd_rpt)
ld de,mainloop
call cp_hl_de
ld a,'>'
call outchar
call nz,outchar
call z,outbl
call get_line
call skipbl
jr z,exe_hl
ld hl,mainloop
ld (cmd_rpt),hl
inc de
sub '@'
jr c,ERROR
cp 'Z'+1-'@'
jr nc,ERROR
add a,a
ld hl,CMDTAB
call add_hl_a
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
jr exe_hl
ERROR:
ld hl,(error_func)
exe_hl:
call CALL_HL
jr mainloop
l0146h:
ld a,'?'
call outchar
;fall thru
crlf:
call inchar
ld a,CR
call outchar
ld a,LF
call outchar
ld a,0
ld (con_col),a
jr c,mainloop
ret
out.hl.@:
call out_hl
push de
push hl
ld de,(var.@)
ld a,d
or e
jr z,l01bfh
call outbl
ld a,'@'
call outchar
and a
sbc hl,de
call out_hl
l01bfh:
pop hl
pop de
ret
sub_01d9h:
ld a,'-'
call outchar
dec hl
jp cpl.hl
out_hl_dec_neg:
push hl
call sub_01d9h
defb 03eh
out.hl.dec:
push hl
ld b,006h
call sub_01f9h
pop hl
ld a,'.'
call outchar
l01f3h:
call outbl
djnz l01f3h
ret
sub_01f9h:
dec b
push de
ld de,10
call div_hl_de
ld a,h
or l
call nz,sub_01f9h
ld a,e
pop de
jr out_dgt
out_hl_neg:
push hl
call sub_01d9h
call out_hl
pop hl
ret
out_hl:
ld a,h
call out_hex
ld a,l
out_hex:
push af
rra
rra
rra
rra
call out_dgt
pop af
out_dgt:
and 0fh
cp 10
jr c,l0229h
add a,007h
l0229h:
add a,'0'
jr outchar
out.bin.w:
ld a,h
call out.bin.b
ld a,l
out.bin.b:
ld b,8
l01c9h:
add a,a
push af
ld a,00
adc a,a
call out_dgt
pop af
djnz l01c9h
ld a,'"'
jr outchar
out.ascii:
push af
res 7,a
cp ' '
push af
call nc,outbl
call outquote
pop af
jr nc,l0242h
sub 0c0h
ex af,af'
ld a,'^'
call outchar
ex af,af'
l0242h:
call outchar
cp ''''
call z,outchar
ex af,af'
call outquote
pop af
or a
ld a,'.'
call m,outchar
ex af,af'
ret
outbl6:
call outbl2
outbl4:
call outbl2
outbl2:
call outbl
outbl:
ld a,' '
jr outchar
p_char_lparen:
ld a,'('
jr outchar
outquote:
ld a,''''
outchar:
push hl
push de
push bc
push af
and 07fh
ld e,a
ld c,BDOS_COUT
call ddtz_bdos
ld hl,con_col
inc (hl)
pop af
pop bc
pop de
pop hl
ret
pstr:
ld c,0
l028ah:
ld a,(hl)
inc hl
and a
ret z
call outchar
inc c
and a
ret m
jr l028ah
pstr_inl:
ex (sp),hl
call pstr
ex (sp),hl
ret
inchar:
push hl
push de
push bc
ld c,BDOS_CSTAT
call ddtz_bdos
and a
jr z,l0284h
ld c,BDOS_CIN
call ddtz_bdos
scf
l0284h:
pop bc
pop de
pop hl
ret
get_line:
push hl
ld de,conbuf
ld c,BDOS_CBUF
call ddtz_bdos
call crlf
ld de,conbuf+1
ld a,(de)
ld b,a
ld c,0
inc b
l0162h:
inc de
dec b
jr z,l0194h
ld a,(de)
bit 0,c
call z,toupper
ld (de),a
cp ''''
jr nz,l0162h
push de
dec de
ld a,(de)
cp ''''
jr z,l0190h
dec de
ld a,(de)
cp '^'
jr z,l0184h
dec de
ld a,(de)
cp '^'
jr nz,l0190h
l0184h:
inc de
push bc
call sub_0303h
pop bc
dec de
ld a,(de)
cp ''''
jr z,l0191h
l0190h:
inc c
l0191h:
pop de
jr l0162h
l0194h:
xor a
ld (de),a
ld de,conbuf+2
pop hl
ret
toupper:
cp 'a'
ret c
cp 'z'+1
ret nc
and 05fh
ret
skipbl0:
inc de
skipbl:
ld a,(de)
cp ' '
jr z,skipbl0
cp TAB
jr z,skipbl0
or a
ret
next_arg:
call skipbl
cp ','
ret nz
inc de
call skipbl
cp a
ret
assert_eol:
call skipbl
ret z
to_error:
jp ERROR
chk_sp:
push hl
push de
ld hl,0
add hl,sp
ld de,stack-40
call cp_hl_de
pop de
pop hl
jr c,to_error
ret
add_hl_a:
add a,l
ld l,a
ret nc
inc h
ret
cp_hl_de:
and a
sbc hl,de
add hl,de
ret
lookupch:
ld b,0
l02f5h:
ld a,(hl)
and a
ret z
ld a,(de)
cp (hl)
jr z,l0300h
inc hl
inc b
jr l02f5h
l0300h:
scf
inc de
ret
sub_0303h:
ld hl,b_0cc3_start
ld b,07fh
jr l030ch
sub_030ah:
ld b,0ffh
l030ch:
inc b
ld a,(hl)
and a
ret z
call sub_031ch
jr nc,l030ch
res 7,b
ret
sub_0318h:
push bc
res 7,b
defb 03eh
sub_031ch:
push bc
push de
l031eh:
ld a,(de)
xor (hl)
and 07fh
jr nz,l0336h
bit 7,(hl)
inc hl
inc de
jr z,l031eh
scf
bit 7,b
call z,sub_060ch
jr nc,l0339h
pop af
scf
pop bc
ret
l0336h:
call sub_0345h
l0339h:
pop de
and a
pop bc
ret
sel_dc_string:
inc b
l033eh:
dec b
ret z
call sub_0345h
jr l033eh
sub_0345h:
ld a,(hl)
and a
ret z
l0348h:
ld a,(hl)
inc hl
and a
ret m
jr l0348h
sub_034eh:
call get_arg_range
push hl
push bc
call next_arg
call sub_0363h
ex de,hl
pop bc
pop hl
ret
sub_035dh:
call expr
jr c,error0
ret
sub_0363h:
call sub_035dh
l0366h:
jp assert_eol
get_lastarg_def:
call get_arg_def
jr l0366h
get_arg_def:
push hl
call expr
jr c,l0375h
ex (sp),hl
l0375h:
pop hl
ret
sub_0377h:
call b_037c_start
jr l0366h
b_037c_start:
defb 0e6h
get_arg_range:
scf
ex af,af'
push bc
push hl
call expr
jr nc,l038ch
ex af,af'
jr c,error0
ex af,af'
pop hl
defb 03eh
l038ch:
pop af
call get_range
jr nc,l0398h
ex af,af'
pop bc
ret nc
error0:
jp ERROR
l0398h:
pop af
ret
get_range:
call next_arg
cp 'S'
jr nz,l03a2h
inc de
l03a2h:
push hl
push af
call expr
jr c,l03b8h
ld b,h
ld c,l
pop af
pop hl
jr z,l03b6h
ld a,c
sub l
ld c,a
ld a,b
sbc a,h
ld b,a
inc bc
l03b6h:
and a
ret
l03b8h:
pop af
pop hl
jr z,error0
scf
ret
expr:
call skipbl
expr1:
call do_subexpr
ret c
call do_rel_op
ret nc
push bc
push hl
call do_subexpr
jr c,error0
ex de,hl
ex (sp),hl
and a
sbc hl,de
ld hl,0ffffh
pop de
ret
do_op_eq:
jr z,l03edh
jr l03ech
do_op_ne:
jr nz,l03edh
jr l03ech
do_op_le:
jr z,l03edh
do_op_lt:
jr c,l03edh
jr l03ech
do_op_gt:
jr z,l03ech
do_op_ge:
jr nc,l03edh
l03ech:
inc hl
l03edh:
and a
ret
do_rel_op:
push hl
ld hl,tab_eq_le_ge
call lookupch
jr nc,l041dh
ld a,b
or a
jr z,l0411h
ld a,(de)
cp '='
jr nz,l0406h
inc de
inc b
inc b
jr l0411h
l0406h:
bit 0,b
jr z,l0411h
cp '>'
jr nz,l0411h
inc de
ld b,005h
l0411h:
ld hl,tab_func_eqlege
ld a,b
add a,a
call add_hl_a
ld c,(hl)
inc hl
ld b,(hl)
scf
l041dh:
pop hl
ret
tab_eq_le_ge:
db '=<>',0
tab_func_eqlege:
dw do_op_eq
dw do_op_lt
dw do_op_gt
dw do_op_le
dw do_op_ge
dw do_op_ne
do_subexpr:
call do_factor
ret c
l0433h:
call do_binary_op
push hl
push bc
call do_factor
pop bc
ex de,hl
ex (sp),hl
jr nc,l0447h
pop de
ld a,b
or c
ret z
jp ERROR
l0447h:
ld a,b
or c
push bc
ret nz
pop bc
doop_add:
add hl,de
l044dh:
pop de
jr l0433h
doop_sub:
and a
sbc hl,de
jr l044dh
doop_mlt:
push bc
ld b,h
ld c,l
ld hl,0
ld a,010h
l045dh:
add hl,hl
ex de,hl
add hl,hl
ex de,hl
jr nc,l0464h
add hl,bc
l0464h:
dec a
jr nz,l045dh
pop bc
jr l044dh
doop_div:
call div_hl_de
jr l044dh
doop_mod:
call div_hl_de
ex de,hl
jr l044dh
; divide x/y
; hl: x
; de: y
; return:
; hl: q (x/y)
; de: r (x%y)
div_hl_de:
push bc
ex de,hl
ld b,h
ld c,l
ld hl,0
ld a,16
; de: x (x shifted out, q shifted in)
; bc: y
; hl: r (initially 0)
l047eh:
push af
add hl,hl
ex de,hl
xor a
add hl,hl
ex de,hl
adc a,l
sub c
ld l,a
ld a,h
sbc a,b
ld h,a
inc de
jr nc,l048fh
add hl,bc
dec de
l048fh:
pop af
dec a
jr nz,l047eh
ex de,hl
pop bc
ret
doop_and:
ld a,h
and d
ld h,a
ld a,l
and e
ld l,a
jr l044dh
doop_or:
ld a,h
or d
ld h,a
ld a,l
or e
ld l,a
jr l044dh
doop_xor:
ld a,h
xor d
ld h,a
ld a,l
xor e
ld l,a
jr l044dh
do_binary_op:
push hl
ld hl,tab_op_a
call lookupch
ld a,b
ld hl,tblf_opa
add a,a
call add_hl_a
ld c,(hl)
inc hl
ld b,(hl)
pop hl
ret
tab_op_a:
DB '+-*/%&!#',0
tblf_opa:
dw doop_add
dw doop_sub
dw doop_mlt
dw doop_div
dw doop_mod
dw doop_and
dw doop_or
dw doop_xor
dw 0
fact_factor:
call do_factor
ret nc
jp ERROR
do_factor:
call chk_sp
call get.number
ret nc
inc de
ld hl,(BDOS+1)
cp 'T'
ret z
ld hl,(high_load)
cp 'H'
ret z
ld hl,(max_load)
cp 'M'
ret z
ld hl,TPA
cp 'L'
ret z
ld hl,(var.@)
cp '@'
ret z
ld hl,(var.$)
cp '$'
ret z
cp '-'
jr z,fact_factneg
cp '~'
jr z,fact_factinv
cp '+'
jr z,fact_factor
cp '^'
jr z,fact_reg.CPU
cp 'Y'
jr z,fact_reg.Y
cp '('
jr z,fact_mem
cp '['
jr z,expr_brckt
cp ''''
jr z,fact_factstring
cp '.'
jr z,fact_symbol
dec de
scf
ret
fact_reg.Y:
call get.decdigit
jr c,error4
inc de
get_y_val:
add a,a
ld hl,reg_Y
call add_hl_a
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
and a
ret
fact_factstring:
ld hl,0
l054bh:
ld a,(de)
cp ''''
jr z,l0557h
and a
ret z
l0552h:
ld h,l
ld l,a
inc de
jr l054bh
l0557h:
inc de
ld a,(de)
cp ''''
jr z,l0552h
sub '.'
or a
ret nz
inc de
set 7,l
ret
fact_reg.CPU:
call sub_0caeh
jr nc,error4
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
and a
bit 0,c
ret nz
ld h,000h
ret
fact_factneg:
call fact_factor
dec hl
cpl.hl:
ld a,h
cpl
ld h,a
ld a,l
cpl
ld l,a
ret
fact_factinv:
call fact_factor
jr cpl.hl
fact_mem:
call expr1
jr c,error4
ld a,(de)
cp ')'
jr nz,error4
inc de
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
ld a,(de)
inc de
cp '.'
ret z
dec de
xor a
ld h,a
ret
expr_brckt:
call expr1
jr c,error4
ld a,(de)
cp ']'
inc de
ret z
error4:
jp ERROR
fact_symbol:
push bc
ld hl,ddtz_base
fs_nxtsym:
ld a,(hl) ;symlen
cp 0c3h
jr z,error4
ld b,a
inc b
push hl
push de
fs_2:
ld a,(de)
call test_termchar
jr z,fs_endstr
dec b
jr z,fs_cont
inc de
dec hl
cp (hl)
jr z,fs_2
fs_cont:
pop de
pop hl
ld a,(hl)
add a,3
call sub_hl_a
jr fs_nxtsym
fs_endstr:
dec b
jr nz,fs_cont
pop hl
pop hl
inc hl
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
or a
pop bc
ret
t_trmchrs:
db ' !#&()*+,-/:;<=>[\]{|}',0
t_trmchrs_len equ $ - t_trmchrs
test_termchar:
push hl
push bc
ld hl,t_trmchrs
ld bc,t_trmchrs_len
cpir
pop bc
pop hl
ret
get.number:
call get.hexdigit
ret c
push de
test_number:
inc de
call get.hexdigit
jr nc,test_number
pop de
cp '.'
jr z,get_dec_number
cp '"'
jr z,get_bin_number
ld hl,0
next_hexdigit:
call get.hexdigit
jr c,hexnum_done
add hl,hl
add hl,hl
add hl,hl
add hl,hl
call add_hl_a
inc de
jr next_hexdigit
hexnum_done:
xor 'H'
ret nz
inc de
ret
get_bin_number:
ld hl,0
next_bindigit:
call get.bindigit
l05dbh:
inc de
jr c,l05e4h
add hl,hl
call add_hl_a
jr next_bindigit
l05e4h:
cp '"'
jp nz,ERROR
call get.bindigit
jr nc,l05dbh
or a
ret
get_dec_number:
ld hl,0
next_decdigit:
call get.decdigit
inc de
jr c,decnum_done
push bc
add hl,hl
ld b,h
ld c,l
add hl,hl
add hl,hl
add hl,bc
pop bc
call add_hl_a
jr next_decdigit
decnum_done:
cp '.'
ret z
jp ERROR
sub_060ch:
ld a,(de)
cp '['
jr l0614h
get.hexdigit:
ld a,(de)
hex_digit:
cp 'F'+1
l0614h:
ccf
ret c
cp 'A'
jr c,l061eh
sub 'A'-10
ret
get.decdigit:
ld a,(de)
l061eh:
cp '9'+1
jr l0625h
get.bindigit:
ld a,(de)
cp '1'+1
l0625h:
ccf
ret c
cp '0'
ret c
sub '0'
ret
p_cpustat0:
call assert_eol
p_cpustat:
call p_f
call outbl2
ld hl,b_06e9_start
ld de,b_0709_start
ld b,6
l063eh:
call p_regs
djnz l063eh
push hl
push de
ld iy,(reg.pc)
call p_disas_instr
exx
ex af,af'
call crlf
call p_f2
call outbl2
pop de
pop hl
ld b,7
l065bh:
call p_regs
djnz l065bh
exx
ex af,af'
and a
jr z,l066bh
call outbl6
call p_offset
l066bh:
jp crlf
p_f:
ld a,(reg.f)
call p_flags
ld a,(reg.iff)
cp 0f3h
jp z,outbl
ld a,'E'
jp outchar
p_f2:
ld a,(reg.f2)
call p_flags
jp outbl
p_flags:
ld b,a
ld a,'S'
call sub_06aah
ld a,'Z'
call sub_06aah
rl b
ld a,'H'
call sub_06aah
rl b
ld a,'V'
call sub_06aah
ld a,'N'
call sub_06aah
ld a,'C'
sub_06aah:
rl b
jp c,outchar
jp outbl
p_regs:
push bc
push de
call pstr
ld a,'='
call outchar
ex (sp),hl
ld e,(hl)
inc hl
ld d,(hl)
inc hl
ld a,(hl)
inc hl
push hl
and a
jr z,l06deh
push af
ld a,(de)
ld l,a
inc de
ld a,(de)
ld h,a
pop af
dec a
jr z,l06d9h
call out.hl.@
call z,outbl6
jr l06e2h
l06d9h:
call out_hl
jr l06e2h
l06deh:
ld a,(de)
call out_hex
l06e2h:
call outbl
pop de
pop hl
pop bc
ret
b_06e9_start:
DC 'A '
DC 'BC '
DC 'DE '
DC 'HL '
DC 'SP'
DC 'PC'
DC 'a'''
DC 'bc'''
DC 'de'''
DC 'hl'''
DC 'IX'
DC 'IY'
DC 'I'
DB 0
b_0709_start:
dw reg.a
db 000h
dw reg.c
db 001h
dw reg.e
db 001h
dw reg.l
db 001h
dw reg_sp
db 001h
dw reg.pc
db 002h
dw reg.a2
db 000h
dw reg.c2
db 001h
dw reg.e2
db 001h
dw reg.l2
db 001h
dw reg.ix
db 001h
dw reg.iy
db 001h
dw reg.i
db 000h
db 000h
cmd_G:
sub a
ld (trace_call_flag),a
ld (l0941h),a
call expr
jr c,l0740h
ld (reg.pc),hl
l0740h:
call skipbl
jp z,user_go
cp ';'
jp nz,ERROR
inc de
ld a,002h
call bp_enter
jp user_go
bp_clr_temporary:
ld b,BP_CNT
ld ix,bp_tab
l075ah:
ld a,(ix+000h)
and 0f1h
ld (ix+000h),a
call bp_clr_condition
ld de,BP_SIZE
add ix,de
djnz l075ah
ret
cmd_B:
call skipbl
jr z,bp_print
inc de
cp 'X'
jr z,bp_clr0
dec de
ld a,001h
jp bp_enter
bp_clr0:
call skipbl
jr z,bp_clr_all
bp_clr_next:
call expr
jp c,assert_eol
push de
call bp_clr
pop de
call next_arg
jr bp_clr_next
bp_clr_all:
scf
bp_clr:
ld b,BP_CNT
ld ix,bp_tab
l0799h:
push af
jr c,l07a7h
ld e,(ix+002h)
ld d,(ix+003h)
call cp_hl_de
jr nz,l07aeh
l07a7h:
ld (ix+000h),000h
call bp_clr_condition
l07aeh:
ld de,BP_SIZE
add ix,de
pop af
djnz l0799h
ret
bp_print:
ld b,BP_CNT
ld ix,bp_tab
bp_pr_l:
bit 0,(ix+000h)
jr z,bp_pr_cont
ld a,'R'
bit 4,(ix+000h)
jr nz,l07cdh
ld a,' '
l07cdh:
call outchar
call outbl
ld l,(ix+002h)
ld h,(ix+003h)
call out.hl.@
ld a,82h
call p_sym_space
call pstr_inl
dc ':'
ld l,(ix+004h)
ld h,(ix+005h)
call out_hl
ld l,(ix+006h)
ld h,(ix+007h)
ld a,h
or l
jr z,l0805h
call outbl4
ld a,'I'
call outchar
call outbl2
call pstr
l0805h:
call crlf
bp_pr_cont:
ld de,BP_SIZE
add ix,de
djnz bp_pr_l
ret
; Add break points to list
; A = 1 Permanent (B command)
; A = 2 Temporary (G command)
bp_enter:
ld b,a
call skipbl
ret z
cp 'R'
jr nz,bp_e_1
inc de
set 4,b
bp_e_1:
push bc
call expr
jp c,ERROR
pop bc
bit 0,b
push bc
push de
push hl
call nz,bp_clr
pop hl
call bp_get_freeslot
pop de
ld (ix+002h),l
ld (ix+003h),h
call bp_get_count
ld (ix+004h),l
ld (ix+005h),h
call bp_get_condition
ld (ix+006h),l
ld (ix+007h),h
call next_arg
pop af
ld (ix+000h),a
and 00fh
jr bp_enter
bp_get_freeslot:
ld b,BP_CNT
ld ix,bp_tab
bp_gf_l:
ld a,(ix+000h)
and 00fh
ret z
push bc
ld bc,BP_SIZE
add ix,bc
pop bc
djnz bp_gf_l
jp ERROR
bp_get_count:
call skipbl
ld hl,1
cp ':'
ret nz
inc de
call expr
jp c,ERROR
ret
bp_get_condition:
call skipbl
cp 'I'
ld hl,0
ret nz
inc de
call skipbl
push de
call expr
jp c,ERROR
ex de,hl
pop de
push de
sbc hl,de
ld b,h
ld c,l
ld hl,(expr_p1)
push hl
add hl,bc
ld de,expr_bufe
call cp_hl_de
jp nc,ERROR
pop hl
ld (expr_p2),hl
pop de
ex de,hl
ldir
xor a
ld (de),a
inc de
ex de,hl
ld (expr_p1),hl
ld hl,(expr_p2)
ret
bpddtz:
ld (reg.l),hl
pop hl
dec hl
ld (reg.pc),hl
ld (reg_sp),sp
ld sp,reg.l
push de
push bc
push af
push ix
push iy
ld a,i
call sub_0004h
ld h,a
ld l,000h
push hl
ld a,0f3h
jp po,l08dfh
ld a,0fbh
l08dfh:
ld (reg.iff),a
ex af,af'
push af
exx
push bc
push de
push hl
call sub_097ah
ld a,(b_21e2_start)
dec a
jr z,l090bh
call inchar
jr c,l0902h
call sub_0913h
and a
jp z,user_go
and 083h
jp z,l2151h
l0902h:
call bp_clr_temporary
call p_cpustat
jp mainloop
l090bh:
ld (b_21e2_start),a
ld c,007h
jp l0a41h
sub_0913h:
ld a,080h
ex af,af'
sub a
ld (l0941h),a
ld b,BP_CNT
ld ix,bp_tab
l0920h:
ld a,(ix+000h)
and 007h
jr z,l0938h
ld e,(ix+002h)
ld d,(ix+003h)
ld hl,(reg.pc)
call cp_hl_de
push bc
call z,sub_0942h
pop bc
l0938h:
ld de,BP_SIZE
add ix,de
djnz l0920h
ex af,af'
ret
sub_0942h:
ex af,af'
res 7,a
ex af,af'
ld e,(ix+006h)
ld d,(ix+007h)
ld a,d
or e
ld hl,0ffffh
call nz,expr
ld a,h
or l
jr z,l0969h
ld e,(ix+004h)
ld d,(ix+005h)
dec de
ld a,d
or e
jr z,l0974h
ld (ix+004h),e
ld (ix+005h),d
l0969h:
bit 4,(ix+000h)
ret z
ld a,001h
ld (l0941h),a
ret
l0974h:
ex af,af'
or (ix+000h)
ex af,af'
ret
sub_097ah:
ld b,BP_CNT
ld ix,bp_tab
l0980h:
bit 5,(ix+000h)
res 5,(ix+000h)
jr z,l099ah
ld l,(ix+002h)
ld h,(ix+003h)
ld a,(l0003h)
cp (hl)
jr nz,l099ah
ld a,(ix+001h)
ld (hl),a
l099ah:
res 3,(ix+000h)
ld de,BP_SIZE
add ix,de
djnz l0980h
ret
sub_09a6h:
ld b,BP_CNT
ld ix,bp_tab
l09ach:
ld a,(ix+000h)
and 003h
jr z,l09c0h
ld e,(ix+002h)
ld d,(ix+003h)
ld hl,(reg.pc)
call cp_hl_de
ret z
l09c0h:
ld de,BP_SIZE
add ix,de
djnz l09ach
sub a
inc a
ret
sub_09cah:
call bp_get_freeslot
ld (ix+004h),001h
ld (ix+005h),000h
ld (ix+002h),l
ld (ix+003h),h
ld (ix+006h),000h
ld (ix+007h),000h
ld a,(b_21e2_start)
and a
ld a,008h
jr nz,l09edh
ld a,004h
l09edh:
ld (ix+000h),a
ret
sub_09f1h:
ld b,BP_CNT
ld ix,bp_tab
l09f7h:
ld a,(ix+000h)
and c
jr z,l0a1dh
set 5,(ix+000h)
ld l,(ix+002h)
ld h,(ix+003h)
ld a,(hl)
ld (ix+001h),a
ld a,(l0003h)
ld (hl),a
and 038h
ld h,000h
ld l,a
ld (hl),0c3h
inc hl
ld de,bpddtz
ld (hl),e
inc hl
ld (hl),d
l0a1dh:
ld de,BP_SIZE
add ix,de
djnz l09f7h
ret
user_go:
sub a
ld (b_21e2_start),a
ld a,(l0941h)
and a
call nz,p_cpustat
call sub_09a6h
ld c,007h
jr nz,l0a41h
ld a,001h
ld (b_21e2_start),a
call sub_1ffeh
ld c,008h
l0a41h:
call sub_09f1h
ld sp,reg.l2
pop hl
pop de
pop bc
pop af
exx
ex af,af'
pop af
ld i,a
pop iy
pop ix
pop af
pop bc
pop de
pop hl
ld sp,(reg_sp)
jp reg.iff
bp_clr_condition:
ld a,(ix+000h)
and 003h
ret nz
ld e,(ix+006h)
ld d,(ix+007h)
ld a,d
or e
ret z
push bc
ld h,d
ld l,e
sub a
ld (ix+006h),a
ld (ix+007h),a
ld bc,0ffffh
cpir
l0a7dh:
push de
ld de,(expr_p1)
call cp_hl_de
pop de
jr nc,l0a93h
call sub_0a99h
l0a8bh:
ld a,(hl)
ldi
and a
jr nz,l0a8bh
jr l0a7dh
l0a93h:
ld (expr_p1),de
pop bc
ret
sub_0a99h:
ld iy,bp_tab
push de
l0a9eh:
ld e,(iy+006h)
ld d,(iy+007h)
call cp_hl_de
jr z,l0ab0h
ld de,BP_SIZE
add iy,de
jr l0a9eh
l0ab0h:
pop de
ld (iy+006h),e
ld (iy+007h),d
ret
cmd_Y:
call get.decdigit
jr c,l0bc3h
inc de
push af
call assert_eol
pop af
call sub_0bdch
jp l0c15h
l0bc3h:
call assert_eol
xor a
l0bc7h:
push af
call sub_0bdch
pop af
push af
call get_y_val
ld a,82h
call p_sym_space
pop af
inc a
bit 0,a
push af
call z,crlf
pop af
cp YREG_CNT
jr c,l0bc7h
ret
sub_0bdch:
ld c,a
ld b,0
add a,'0'+080h
ld de,msg_Y+1
ld (de),a
dec de
ld hl,reg_Y
add hl,bc
add hl,bc
ex de,hl
ld c,003h
jp l0c33h
cmd_X:
call skipbl
call sub_0caeh
jp nc,p_cpustat0
call assert_eol
ld a,b
cp 01eh
jr z,l0c5fh
cp 01fh
jr z,l0c4fh
cp 01dh
jp z,ERROR
ex de,hl
ld hl,b_0cc3_start
call sel_dc_string
l0c12h:
call l0c33h
l0c15h:
call outbl
push de
push bc
call get_line
call skipbl
jr z,l0c30h
call sub_0363h
ld b,h
ld c,l
pop af
pop hl
ld (hl),c
bit 0,a
ret z
inc hl
ld (hl),b
ret
l0c30h:
pop af
pop hl
ret
l0c33h:
ld b,c
call pstr
ld a,'='
call outchar
ld a,(de)
bit 0,b
jp z,out_hex
ld l,a
inc de
ld a,(de)
dec de
ld h,a
bit 1,b
jp z,out_hl
jp out.hl.@
l0c4fh:
call p_f
ld a,0f3h
ld (reg.iff),a
scf
call sub_0c6ah
ld (reg.f),a
ret
l0c5fh:
call p_f2
and a
call sub_0c6ah
ld (reg.f2),a
ret
sub_0c6ah:
ex af,af'
ld b,000h
call outbl
call assert_eol
call get_line
l0c76h:
call skipbl
ld a,b
ret z
push bc
ld hl,b_0ca4_start
call lookupch
jp nc,ERROR
ld a,b
cp 008h
jr z,l0c97h
pop bc
rlca
rlca
rlca
add a,0c0h
ld (l0c94h),a
defb 0cbh
l0c94h:
defb 0c0h
jr l0c76h
l0c97h:
ex af,af'
jp nc,ERROR
ex af,af'
ld a,0fbh
ld (reg.iff),a
pop bc
jr l0c76h
b_0ca4_start:
db 'CNV H ZSE',0
sub_0caeh:
call sub_0303h
ret nc
ld a,b
add a,b
add a,b
ld hl,b_0cfa_start
call add_hl_a
ld c,(hl)
inc hl
ld a,(hl)
inc hl
ld h,(hl)
ld l,a
scf
ret
b_0cc3_start:
DC 'BC'''
DC 'DE'''
DC 'HL'''
DC 'BC'
DC 'DE'
DC 'HL'
DC 'A'''
DC 'B'''
DC 'C'''
DC 'D'''
DC 'E'''
DC 'H'''
DC 'L'''
DC 'A'
DC 'B'
DC 'C'
DC 'D'
DC 'E'
DC 'H'
DC 'L'
DC 'IX'
DC 'IY'
DC 'SP'
DC 'PC'
DC 'X'
DC 'Y'
DC 'S'
DC 'P'
DC 'I'
DC 'IP'
DC 'F'''
DC 'F'
DB 0
b_0cfa_start:
db 003h
dw reg.c2
db 003h
dw reg.e2
db 003h
dw reg.l2
db 003h
dw reg.c
db 003h
dw reg.e
db 003h
dw reg.l
db 000h
dw reg.a2
db 000h
dw reg.b2
db 000h
dw reg.c2
db 000h
dw reg.d2
db 000h
dw reg.e2
db 000h
dw reg.h2
db 000h
dw reg.l2
db 000h
dw reg.a
db 000h
dw reg.b
db 000h
dw reg.c
db 000h
dw reg.d
db 000h
dw reg.e
db 000h
dw reg.h
db 000h
dw reg.l
db 003h
dw reg.ix
db 003h
dw reg.iy
db 003h
dw reg_sp
db 003h
dw reg.pc
db 003h
dw reg.ix
db 003h
dw reg.iy
db 003h
dw reg_sp
db 003h
dw reg.pc
db 000h
dw reg.i
db 003h
dw l004eh
db 000h
dw reg.f2
db 000h
dw reg.f
cmd_S:
ld hl,(last_S)
call get_lastarg_def
l0d60h:
ld (last_S),hl
call out.hl.@
call outbl
ld a,(hl)
call out_hex
call outbl2
call get_line
call skipbl
inc hl
jr z,l0d60h
dec hl
inc de
cp '.'
jp z,assert_eol
cp '-'
jr nz,l0d8ah
ld a,(de)
or a
dec hl
jr z,l0d60h
inc hl
l0d8ah:
dec de
call sub_0ef8h
jr l0d60h
cmd_@:
call assert_eol
ld hl,msg_@
ld de,var.@
ld c,001h
jp l0c12h
msg_@:
dc '@'
cmd_I:
ld hl,cmd_I
ld (cmd_rpt),hl
ld hl,(last_I)
call get_lastarg_def
ld (last_I),hl
ld b,h
ld c,l
in a,(c)
push af
call out_hex
call outbl4
pop af
call out.bin.b
jp crlf
cmd_O:
ld hl,cmd_O
ld (cmd_rpt),hl
ld hl,(last_O_val)
call get_arg_def
ld a,l
ld (last_O_val),a
push af
call next_arg
ld hl,(last_O_addr)
call get_lastarg_def
ld (last_O_addr),hl
ld b,h
ld c,l
pop af
out (c),a
ret
cmd_V:
call sub_034eh
l0dedh:
push bc
ld a,(de)
ld b,(hl)
cp b
jr z,l0e10h
ld c,a
call out.hl.@
call outbl
ld a,b
call out_hex
call outbl2
ld a,c
call out_hex
call outbl
ex de,hl
call out.hl.@
ex de,hl
call crlf
l0e10h:
pop bc
inc hl
inc de
dec bc
ld a,b
or c
jr nz,l0dedh
ret
cmd_M:
ld a,(de)
cp 'V'
jr nz,l0e1fh
inc de
l0e1fh:
push af
call sub_034eh
push hl
push de
push bc
call cp_hl_de
jr nc,cmdm_up
add hl,bc
ex de,hl
add hl,bc
ex de,hl
dec hl
dec de
lddr
db 01h ;swallow ldir instruction (ld bc,...)
cmdm_up:
ldir
pop bc
pop de
pop hl
pop af
jr z,l0dedh
ret
cmd_H:
ld a,(de)
cp 'S'
jr z,p_symbols
call expr
jp c,p_max_high0
call next_arg
push hl
call expr
push af
call assert_eol
pop af
ex de,hl
pop hl
jr c,l0e5eh
push hl
push de
add hl,de
call l0e5eh
pop de
pop hl
and a
sbc hl,de
l0e5eh:
call out_hl
call outbl2
call out_hl_neg
call outbl4
call out.hl.dec
call outbl2
call out_hl_dec_neg
call outbl4
call out.bin.w
call outbl
ld a,l
call out.ascii
ld a,80h
call p_sym_space
jp crlf
p_symbols:
inc de
call assert_eol
ld hl,ddtz_base+2
ld a,(symlen_max)
add a,8
ld b,a
ld a,80 ;screen width
ld c,-1
psym_1:
inc c
sub a,b
jr nc,psym_1
psym_nxtline:
ld b,c
psym_nxtcol:
ld d,(hl)
dec hl
ld e,(hl)
dec hl
ld a,(hl)
call sub_hl_a1
cp 0c3h
jr z,psym_e
ex de,hl
call out_hl
call outbl
ld a,3
call p_sym_space
ex de,hl
djnz psym_nxtcol
call crlf
jr psym_nxtline
psym_e:
ld a,b
cp c
ret z
jp crlf
p_sym_space:
if 0
ld a,(dash_flag)
or a
ret nz
endif
push hl
push bc
ld c,a
ld a,(con_col)
ld b,a
call sym_getname
jr z,psb_align
bit 7,c
jr z,psb_nd
ld a,' '
call outchar
ld a,'.'
call outchar
psb_nd:
call p_symstr
psb_align:
ld a,(con_col)
sub b
ld b,a
ld a,(symlen_max)
bit 7,c
jr z,$+4
add a,2
res 7,c
add c
sub b
ld b,a
jr z,psb_e
psb_a_l:
call outbl
djnz psb_a_l
psb_e:
pop bc
pop hl
ret
p_symbol:
if 0
ld a,(dash_flag)
or a
ret nz
endif
call sym_getname
ret z
call pstr_inl
dc ' .'
p_symstr:
push bc
ld b,(hl)
pss_l:
dec hl
ld a,(hl)
call outchar
djnz pss_l
pop bc
ret
p_label:
if 0
ld a,(dash_flag)
or a
ret nz
endif
push hl
call sym_getname
jr z,pl_e
call p_symstr
ld a,':'
call outchar
call crlf
pl_e:
pop hl
ret
sym_getname:
push de
push hl
ld hl,ddtz_base+2
sgn_l:
ld d,(hl)
dec hl
ld e,(hl)
dec hl
ld a,(hl)
cp 0c3h
jr z,sgn_e
ex (sp),hl
call cp_hl_de
jr z,sgn_e
ex (sp),hl
call sub_hl_a1
jr sgn_l
sgn_e:
sub 0c3h
pop hl
pop de
ret
sub_hl_a1:
dec hl
sub_hl_a:
push bc
ld c,a
ld b,0
or a
sbc hl,bc
pop bc
ret
cmd_Q:
ld a,(de)
sub 'J'
ld (cmd_Q_jopt),a
jr nz,l0e8dh
inc de
l0e8dh:
call get_arg_range
push bc
push hl
call sub_0ee6h
pop hl
l0e96h:
call sub_0ed7h
jr nz,l0eb0h
push bc
push hl
ld a,(cmd_Q_jopt)
or a
jr nz,l0ea7h
ld bc,-8
add hl,bc
l0ea7h:
ld bc,16
and a
call sub_0f58h
pop hl
pop bc
l0eb0h:
inc hl
ex (sp),hl
dec hl
ld a,h
or l
ex (sp),hl
jr nz,l0e96h
pop bc
ret
cmd_Z:
call get_arg_range
push bc
push hl
call sub_0ee6h
ld a,b
pop hl
pop bc
push hl
ex de,hl
l0ec7h:
ldi
jp po,l0ed3h
dec a
jr nz,l0ec7h
pop hl
ldir
ret
l0ed3h:
pop hl
ret
sub_0ed7h:
push hl
push de
push bc
l0edah:
ld a,(de)
cp (hl)
jr nz,l0ee2h
inc de
inc hl
djnz l0edah
l0ee2h:
pop bc
pop de
pop hl
ret
sub_0ee6h:
ld hl,conbuf+1
call sub_0ef7h
ld de,conbuf+1
and a
sbc hl,de
ld b,l
ret nz
jp ERROR
sub_0ef7h:
db 0e6h ; and 037h (clear carry)
sub_0ef8h:
scf
l0ef9h:
push af
call next_arg
cp 'W'
jr nz,l0f0eh
inc de
push hl
call sub_035dh
ex de,hl
ex (sp),hl
ld (hl),e
inc hl
ld a,d
pop de
jr l0f1ah
l0f0eh:
cp ''''
jr z,l0f1eh
push hl
call expr
ld a,l
pop hl
jr c,l0f42h
l0f1ah:
ld (hl),a
inc hl
jr l0f3ah
l0f1eh:
inc de
ld a,(de)
cp ''''
jr z,l0f2bh
or a
jr z,l0f42h
l0f27h:
ld (hl),a
inc hl
jr l0f1eh
l0f2bh:
inc de
ld a,(de)
cp ''''
jr z,l0f27h
cp '.'
jr nz,l0f3ah
inc de
dec hl
set 7,(hl)
inc hl
l0f3ah:
pop af
jr nc,l0ef9h
ld (last_S),hl
jr l0ef9h
l0f42h:
pop af
ret nc
ld (last_S),hl
ret
cmd_D:
ld hl,cmd_D
ld (cmd_rpt),hl
ld hl,(last_D)
ld bc,128
call sub_0377h
scf
sub_0f58h:
push bc
push de
push hl
ex af,af'
l0f5ch:
call out.hl.@
call z,outbl2
call outbl
ld de,0
l0f68h:
ld a,(hl)
inc hl
call out_hex
call outbl
dec bc
inc e
ld a,e
cp 010h
jr z,l0f80h
and 003h
call z,outbl
ld a,b
or c
jr nz,l0f68h
l0f80h:
call outbl
and a
sbc hl,de
l0f86h:
ld a,(hl)
call sub_0fa3h
call outchar
inc hl
dec e
jr nz,l0f86h
ex af,af'
jr nc,l0f97h
ld (last_D),hl
l0f97h:
ex af,af'
call crlf
ld a,b
or c
jr nz,l0f5ch
pop hl
pop de
pop bc
ret
sub_0fa3h:
and 07fh
cp 07fh
jr z,l0fach
cp ' '
ret nc
l0fach:
ld a,'.'
ret
cmd_F:
push de
ld hl,DMA_BUF+1
ld (hl),' '
inc hl
l0fb6h:
ld a,(de)
ld (hl),a
inc hl
inc de
and a
jr nz,l0fb6h
ld a,l
sub DMA_BUF+2
ld (DMA_BUF),a
pop hl
ld de,dfcb1
call parse_filename
ld de,dfcb2
call parse_filename
;fall thru
cpy_fcb2:
ld hl,dfcb2
ld de,fcbsym
ld bc,16
ldir
ret
parse_filename:
call sub_102ch
push de
push bc
ld b,(hl)
inc hl
ld a,(hl)
cp ':'
jr nz,l0fe1h
inc hl
ld a,b
sub 040h
and 01fh
jr l0fe3h
l0fe1h:
dec hl
xor a
l0fe3h:
ld (de),a
inc de
ld b,8
call sub_0ff2h
ld b,3
call sub_0ff2h
pop bc
pop de
ret
sub_0ff2h:
call sub_1012h
jr z,l0ffeh
inc hl
ld (de),a
inc de
djnz sub_0ff2h
jr l1003h
l0ffeh:
ld a,c
l0fffh:
ld (de),a
inc de
djnz l0fffh
l1003h:
call sub_1012h
inc hl
jr nz,l1003h
cp '*'
jr z,l1003h
cp '.'
ret z
dec hl
ret
sub_1012h:
ld a,(hl)
ld c,' '
and 01fh
ret z
ld a,(hl)
cp ' '
ret z
call sub_1043h
ret z
cp '/'
ret z
cp '.'
ret z
ld c,'?'
cp '*'
ret
l102bh:
inc hl
sub_102ch:
ld a,(hl)
cp '/'
jr z,l103bh
call sub_1043h
jr z,l102bh
l1036h:
cp ' '
jr z,l102bh
ret
l103bh:
ld a,(hl)
cp ' '+1
jr c,l1036h
inc hl
jr l103bh
sub_1043h:
cp '='
ret z
cp '_'
ret z
cp ','
ret
setup_fcb:
push de
ld hl,12
add hl,de
xor a
ld b,21
l1052h:
ld (hl),a
inc hl
djnz l1052h
ld de,DMA_BUF
ld c,BDOS_SETDMA
call ddtz_bdos
pop de
ret
file_open:
ld (cur_fcb),de
call setup_fcb
ld c,BDOS_OPEN
call ddtz_bdos
inc a
jp z,ERROR
ld a,080h
ld (cmdR_rindex),a
ret
read_byte:
ld a,(cmdR_rindex)
cp 080h
jr nz,l1111h
call read_sector
ret z
sub a
l1111h:
inc a
ld (cmdR_rindex),a
push hl
add a,07fh
ld l,a
ld h,000h
ld a,(hl)
pop hl
cp 01ah
ret
read_sector:
push hl
push de
push bc
ld de,(cur_fcb)
ld c,BDOS_READ
call ddtz_bdos
dec a
jr z,l1132h
jp p,ERROR
l1132h:
pop bc
pop de
pop hl
ret
cmdR_storebyte:
push af
push de
ld de,TPA
call cp_hl_de
jp c,ERROR
ld de,(BDOS+1)
call cp_hl_de
jp nc,ERROR
ld de,(high_load)
call cp_hl_de
jr c,l1157h
ld (high_load),hl
l1157h:
ld de,(max_load)
call cp_hl_de
jr c,l1163h
ld (max_load),hl
l1163h:
pop de
pop af
ld (hl),a
ret
strncmp:
ld a,(de)
cp (hl)
inc de
inc hl
ret nz
djnz strncmp
ret
str_hex:
db 'HEX'
read_hexchar:
call read_hexdigit
rlca
rlca
rlca
rlca
ld d,a
call read_hexdigit
add a,d
ld d,a
add a,c
ld c,a
ld a,d
ret
read_hexdigit:
call read_byte
jr z,error8
hex_digit_v:
call hex_digit
ret nc
error8:
jp ERROR
read_hexbyte:
call read_byte
read_hexbyte0:
push bc
call hex_digit_v
rlca
rlca
rlca
rlca
ld c,a
call read_byte
call hex_digit_v
or c
pop bc
ret
cmd_R:
ld hl,0
call get_lastarg_def
read_file:
ld de,dfcb1+1
ld a,(de)
cp '?'
jr z,read_symfile
dec de
push hl
ld hl,0
ld (high_load),hl
call file_open
ld hl,dfcb1+9
ld de,str_hex
ld b,3
call strncmp
pop hl
jr z,read_hexfile
ld de,TPA
add hl,de
push hl
l108eh:
call read_sector
pop hl
jr z,read_symfile
ld de,DMA_BUF
ld b,080h
l109ah:
ld a,(de)
call cmdR_storebyte
inc de
inc hl
djnz l109ah
push hl
jr l108eh
read_hexfile:
push hl
l10aeh:
call read_byte
jr z,rdhex_done
cp ':'
jr nz,l10aeh
ld c,0
call read_hexchar
ld b,a
call read_hexchar
ld h,a
call read_hexchar
ld l,a
ld a,b
and a
jr z,rdhex_done
call read_hexchar
l10cch:
call read_hexchar
pop de
push de
push hl
add hl,de
call cmdR_storebyte
pop hl
inc hl
djnz l10cch
call read_hexchar
ld a,c
and a
jr nz,error9
jr l10aeh
rdhex_done:
pop hl
jr read_symfile
read_symfile:
ld de,fcbsym+1
ld a,(de)
cp ' '
jp z,p_max_high
call pstr_inl
db 'SYMBOLS',CR,LF+80h
dec de
call file_open
rs_1:
call read_byte
rs_2:
cp 1ah
jp z,p_max_high
cp '!'
jr c,rs_1
call read_hexbyte0
ld d,a
call read_hexbyte ; symval
ld e,a
push de ; symval
call read_byte
cp ' '
jr z,rs_4
pop hl ; discard symval
rs_3: call read_byte
cp ' '
jr c,rs_2
jr rs_3
;
rs_4: ld hl,(BDOS+1) ;
ld e,0 ; setup symlen
rs_5: dec hl ;
call read_byte ;
cp TAB ;
jr z,rs_6 ;
cp CR ;
jr z,rs_6 ;
cp '!' ;
jr c,error9 ;
ld (hl),a ;
inc e ; symlen++
ld a,e ;
cp 10h+1 ;
jr c,rs_5 ;
error9:
jp ERROR ;
;
rs_6: push de ; symlen
push hl ;
ex de,hl ;
ld hl,(BDOS+1) ;
inc hl ;
ld e,(hl) ;
inc hl ;
ld d,(hl) ;
pop hl ;
ld (hl),d ;
dec hl ;
ld (hl),e ;
dec hl ;
ld (hl),0c3h ;
ld de,(max_load) ;
call cp_hl_de ;
jr c,error9 ;
ld de,(reg_sp) ;
call cp_hl_de ;
jr nc,rs_61 ;
ld (reg_sp),hl ;
rs_61:
ld de,(BDOS+1) ;
ld (BDOS+1),hl ;
ex de,hl ;
pop de ;
ld (hl),e ; symlen
ld a,e
inc hl ;
pop de ; symval
ld (hl),e ;
inc hl ;
ld (hl),d ;
ld hl,symlen_max
cp (hl)
jr c,$+3
ld (hl),a
jp rs_1 ;
p_max_high0:
call assert_eol
p_max_high:
call pstr_inl
DC 'High = '
ld hl,(high_load)
call out_hl
call pstr_inl
DC ' Max = '
ld hl,(max_load)
call out_hl
call pstr_inl
DC ' Top = '
ld hl,(BDOS+1)
call out_hl
jp crlf
cmd_W:
call get_arg_range
call assert_eol
push hl
ld a,c
add a,07fh
jr nc,l11adh
inc b
l11adh:
and 080h
ld c,a
push bc
ld a,(dfcb1+1)
cp ' '
jr z,error5
ld de,dfcb1
call setup_fcb
push de
ld c,BDOS_DELETE
call ddtz_bdos
pop de
ld c,BDOS_CREATE
call ddtz_bdos
inc a
jr z,error5
pop bc
pop hl
l11cch:
ld a,b
or c
jr z,close_file
push bc
ld de,080h ; DMA_BUF
ld b,d
ld c,e
ldir
call write_sector
ex (sp),hl
ld bc,0ff80h
add hl,bc
ex (sp),hl
pop bc
jr l11cch
write_sector:
push hl
ld de,dfcb1
ld c,BDOS_WRITE
call ddtz_bdos
pop hl
and a
ret z
call close_file
error5:
jp ERROR
close_file:
ld de,dfcb1
ld c,BDOS_CLOSE
jp ddtz_bdos
cmd_A:
ld hl,(last_A)
call get_lastarg_def
push hl
pop iy
ld hl,l1259h
ld (error_func),hl
ld (l1262h),sp
l1211h:
push iy
pop hl
ld (last_A),hl
ld (var.$),hl
push hl
call p_disas_line
pop iy
ld c,b
ld de,(var.@)
ld a,d
or e
ld b,17
jr z,l122dh
ld b,25
l122dh:
call outbl
ld a,(con_col)
cp b
jr c,l122dh
push bc
call get_line
pop bc
call skipbl
cp '.'
ret z
cp '-'
jr nz,l124bh
ld iy,(cmd_A_prev)
jr l1211h
l124bh:
and a
call nz,sub_1268h
ld (cmd_A_prev),iy
ld b,0
add iy,bc
jr l1211h
l1259h:
call l0146h
ld sp,(l1262h)
jr l1211h
sub_1268h:
call skipbl
ld hl,t_MNEMONICS
call sub_030ah
jp nc,ERROR
call skipbl
push de
ld a,b
add a,b
add a,b
ld hl,b_1289_start
call add_hl_a
ld e,(hl)
inc hl
ld d,(hl)
inc hl
ld b,(hl)
ex de,hl
pop de
CALL_HL:
jp (hl)
b_1289_start:
dw as.ADC_SBC ;ADC
db 088h ;
dw as.ADD ;ADD
db 080h ;
dw as.AND_CP_OR_SUB_XOR ;AND
db 0a0h ;
dw as.BITOP ;BIT
db 040h ;
dw as.CALL ;CALL
db 0c4h ;
dw as.opc.noarg ;CCF
db 03fh ;
dw as.AND_CP_OR_SUB_XOR ;CP
db 0b8h ;
dw gen.opc.ED2 ;CPD
db 0a9h ;
dw gen.opc.ED2 ;CPDR
db 0b9h ;
dw gen.opc.ED2 ;CPI
db 0a1h ;
dw gen.opc.ED2 ;CPIR
db 0b1h ;
dw as.opc.noarg ;CPL
db 02fh ;
dw as.opc.noarg ;DAA
db 027h ;
dw as.DEC_INC ;DEC
db 005h ;
dw as.opc.noarg ;DI
db 0f3h ;
dw as.DJNZ ;DJNZ
db 010h ;
dw as.opc.noarg ;EI
db 0fbh ;
dw as.EX ;EX
db 0e3h ;
dw as.opc.noarg ;EXX
db 0d9h ;
dw as.opc.noarg ;HALT
db 076h ;
dw as.IM ;IM
db 046h ;
dw as.IN ;IN
db 040h ;
dw as.DEC_INC ;INC
db 004h ;
dw gen.opc.ED2 ;IND
db 0aah ;
dw gen.opc.ED2 ;INDR
db 0bah ;
dw gen.opc.ED2 ;INI
db 0a2h ;
dw gen.opc.ED2 ;INIR
db 0b2h ;
dw as.JP ;JP
db 0c2h ;
dw as.JR ;JR
db 020h ;
dw as.LD ;LD
db 040h ;
dw gen.opc.ED2 ;LDD
db 0a8h ;
dw gen.opc.ED2 ;LDDR
db 0b8h ;
dw gen.opc.ED2 ;LDI
db 0a0h ;
dw gen.opc.ED2 ;LDIR
db 0b0h ;
dw gen.opc.ED2 ;NEG
db 044h ;
dw as.opc.noarg ;NOP
db 000h ;
dw as.AND_CP_OR_SUB_XOR ;OR
db 0b0h ;
dw gen.opc.ED2 ;OTDR
db 0bbh ;
dw gen.opc.ED2 ;OTIR
db 0b3h ;
dw as.OUT ;OUT
db 041h ;
dw gen.opc.ED2 ;OUTD
db 0abh ;
dw gen.opc.ED2 ;OUTI
db 0a3h ;
dw as.POP_PUSH ;POP
db 0c1h ;
dw as.POP_PUSH ;PUSH
db 0c5h ;
dw as.BITOP ;RES
db 080h ;
dw as.RET ;RET
db 0c0h ;
dw gen.opc.ED2 ;RETI
db 04dh ;
dw gen.opc.ED2 ;RETN
db 045h ;
dw as.SHIFTOP ;RL
db 010h ;
dw as.opc.noarg ;RLA
db 017h ;
dw as.SHIFTOP ;RLC
db 000h ;
dw as.opc.noarg ;RLCA
db 007h ;
dw gen.opc.ED2 ;RLD
db 06fh ;
dw as.SHIFTOP ;RR
db 018h ;
dw as.opc.noarg ;RRA
db 01fh ;
dw as.SHIFTOP ;RRC
db 008h ;
dw as.opc.noarg ;RRCA
db 00fh ;
dw gen.opc.ED2 ;RRD
db 067h ;
dw as.RST ;RST
db 0c7h ;
dw as.ADC_SBC ;SBC
db 098h ;
dw as.opc.noarg ;SCF
db 037h ;
dw as.BITOP ;SET
db 0c0h ;
dw as.SHIFTOP ;SLA
db 020h ;
dw as.SHIFTOP ;SRA
db 028h ;
dw as.SHIFTOP ;SRL
db 038h ;
dw as.AND_CP_OR_SUB_XOR ;SUB
db 090h ;
dw as.AND_CP_OR_SUB_XOR ;XOR
db 0a8h ;
dw as.IN0 ;IN0
db 000h ;
dw as.MLT ;MLT
db 04ch ;
dw gen.opc.ED2 ;OTDM
db 08bh ;
dw gen.opc.ED2 ;OTDMR
db 09bh ;
dw gen.opc.ED2 ;OTIM
db 083h ;
dw gen.opc.ED2 ;OTIMR
db 093h ;
dw as.OUTO ;OUT0
db 001h ;
dw gen.opc.ED2 ;SLP
db 076h ;
dw as.TST ;TST
db 004h ;
dw as.TSTIO ;TSTIO
db 074h ;
as.TST:
call arg.r_HL_A ;
jr nc,as.tst_0
rlca
rlca
rlca
add a,b
ld b,a
jp gen.opc.ED2
as.tst_0:
ld b,064h
as.TSTIO:
call arg.imm_8bit ;
jr as.store_io0
as.IN0:
call arg.r_HL_A ;
jr nc,error7
cp 006h
jr z,error7
rlca
rlca
rlca
add a,b
ld b,a
call assert_comma ;
call arg.addr_8bit ;
jr as.store_io0
as.OUTO:
call arg.addr_8bit ;
call assert_comma ;
call arg.r_HL_A ;
jr nc,error7
cp 006h
jr z,error7
rlca
rlca
rlca
add a,b
ld b,a
as.store_io0:
call assert_eol
ld (iy+000h),0edh
ld (iy+001h),b
ld (iy+002h),l
ld c,003h
ret
as.MLT:
call arg.ww ;
jr nc,error7
add a,b
ld b,a
jp gen.opc.ED2
error7:
jp ERROR
as.LD:
call arg.r_HL_A
jr c,l13d4h
call arg.IDX_displcmnt
jp c,l1471h
call arg.ww
jp c,l149ch
call arg.IX_IY
jp c,l14f5h
ld a,(de)
cp 'I'
jp z,l1511h
cp 'R'
jp z,l1519h
cp '('
jp nz,ERROR
inc de
call arg.ww
jp c,l1528h
call test_expr
call test_paren_close
call assert_comma
call arg.ww
jr c,l13c2h
call arg.IX_IY
jr nc,l13aah
ld b,022h
l1395h:
call assert_eol
ld a,(prefix_ixiy)
l139bh:
ld (iy+000h),a
ld (iy+001h),b
ld (iy+002h),l
ld (iy+003h),h
ld c,004h
ret
l13aah:
ld a,(de)
cp 'A'
jp nz,ERROR
inc de
ld b,032h
as.store_3:
call assert_eol
ld (iy+000h),b
ld (iy+001h),l
ld (iy+002h),h
ld c,003h
ret
l13c2h:
cp 020h
jr z,l13d0h
add a,043h
ld b,a
l13c9h:
call assert_eol
ld a,0edh
jr l139bh
l13d0h:
ld b,022h
jr as.store_3
l13d4h:
ld b,a
call assert_comma
call arg.r_HL_A
jr nc,l13f0h
push af
ld a,b
rlca
rlca
rlca
ld b,a
pop af
add a,b
add a,040h
cp 076h
jp z,ERROR
l13ech:
ld b,a
jp as.opc.noarg
l13f0h:
call arg.IDX_displcmnt
jr nc,l1413h
ld a,b
rlca
rlca
rlca
add a,046h
cp 076h
jp z,ERROR
l1400h:
ld b,a
call assert_eol
ld (iy+001h),b
ld (iy+002h),c
ld a,(prefix_ixiy)
ld (iy+000h),a
ld c,003h
ret
l1413h:
ld a,(de)
cp 'I'
jr z,l1426h
cp 'R'
jr nz,l1432h
ld a,b
cp 007h
jp nz,ERROR
ld b,05fh
jr l142eh
l1426h:
ld a,b
cp 007h
jp nz,ERROR
ld b,057h
l142eh:
inc de
jp gen.opc.ED2
l1432h:
cp '('
jr z,l144ch
call arg.imm_8bit
ld a,b
rlca
rlca
rlca
add a,006h
l143fh:
ld b,a
as.store_2:
call assert_eol
ld (iy+000h),b
ld (iy+001h),l
ld c,002h
ret
l144ch:
inc de
ld a,b
cp 007h
jp nz,ERROR
call arg.ww
jr nc,l1466h
cp 030h
jp nc,ERROR
add a,00ah
ld b,a
call test_paren_close
jp as.opc.noarg
l1466h:
call test_expr
call test_paren_close
ld b,03ah
jp as.store_3
l1471h:
call assert_comma
call arg.r_HL_A
jr nc,l1483h
cp 006h
jp z,ERROR
add a,070h
jp l1400h
l1483h:
call arg.imm_8bit
call assert_eol
ld a,(prefix_ixiy)
ld (iy+000h),a
ld (iy+001h),036h
ld (iy+002h),c
ld (iy+003h),l
ld c,004h
ret
l149ch:
ld b,a
call assert_comma
ld hl,t_HL.AF
call sub_0318h
jr c,l14c3h
call arg.IX_IY
jr nc,l14cch
ld a,b
cp 030h
jr nz,error6
ld b,0f9h
l14b4h:
call assert_eol
ld a,(prefix_ixiy)
ld (iy+000h),a
ld (iy+001h),b
ld c,002h
ret
l14c3h:
ld a,b
cp 030h
jr nz,error6
ld b,0f9h
jr as.opc.noarg ;14ca
l14cch:
ld a,(de)
cp '('
jr nz,l14e8h
inc de
call test_expr
call test_paren_close
ld a,b
cp 020h
jr z,l14e3h
add a,04bh
ld b,a
jp l13c9h
l14e3h:
ld b,02ah
jp as.store_3
l14e8h:
call test_expr
call assert_eol
ld a,001h
add a,b
ld b,a
jp as.store_3
l14f5h:
call assert_comma
ld a,(de)
cp '('
jr nz,l1509h
inc de
call test_expr
call test_paren_close
ld b,02ah
jp l1395h
l1509h:
call test_expr
ld b,021h
jp l1395h
l1511h:
inc de
call assert_comma
ld b,047h
jr l151fh
l1519h:
inc de
call assert_comma
ld b,04fh
l151fh:
ld a,(de)
inc de
cp 'A'
jr z,gen.opc.ED2
error6:
jp ERROR
l1528h:
cp 020h
jr nc,error6
add a,002h
ld b,a
call test_paren_close
call assert_comma
ld a,(de)
cp 'A'
jr nz,error6
inc de
as.opc.noarg:
call assert_eol
ld (iy+000h),b
ld c,001h
ret
gen.opc.ED2:
call assert_eol
ld (iy+000h),0edh
ld (iy+001h),b
ld c,002h
ret
as.ADC_SBC:
ld hl,t_HL.AF
call sub_0318h
jr nc,as.AND_CP_OR_SUB_XOR
call assert_comma
call arg.ww
jp nc,ERROR
push af
ld a,b
cp 088h
ld b,04ah
jr z,l156ch
ld b,042h
l156ch:
pop af
add a,b
l156eh:
ld b,a
jr gen.opc.ED2
as.ADD:
ld hl,t_HL.AF
call sub_0318h
jr c,l159ah
call arg.IX_IY
jr nc,as.AND_CP_OR_SUB_XOR
call assert_comma
ld hl,t_BC.DE.IX.SP
ld a,(prefix_ixiy)
cp 0fdh
jr nz,l158eh
ld hl,t_BC.DE.IY.SP
l158eh:
call arg.reg_16bit
jp nc,ERROR
add a,009h
l1596h:
ld b,a
jp l14b4h
l159ah:
call assert_comma
call arg.ww
jp nc,ERROR
add a,009h
jp l13ech
as.AND_CP_OR_SUB_XOR:
ld a,(de)
cp 'A'
jr nz,l15b8h
push de
inc de
call next_arg
jr z,l15b7h
pop de
jr l15b8h
l15b7h:
pop af
l15b8h:
call arg.r_HL_A
jr c,l15cbh
call arg.IDX_displcmnt
jr c,l15cfh
call arg.imm_8bit
ld a,b
add a,046h
jp l143fh
l15cbh:
add a,b
jp l13ech
l15cfh:
ld a,b
add a,006h
jp l1400h
as.SHIFTOP:
call arg.r_HL_A
jr c,l15fah
call arg.IDX_displcmnt
jp nc,ERROR
ld a,b
add a,006h
ld b,a
l15e4h:
call assert_eol
ld a,(prefix_ixiy)
ld (iy+000h),a
ld (iy+001h),0cbh
ld (iy+002h),c
ld (iy+003h),b
ld c,004h
ret
l15fah:
add a,b
l15fbh:
ld b,a
call assert_eol
ld (iy+001h),b
ld (iy+000h),0cbh
ld c,002h
ret
as.BITOP:
call arg.bit
call assert_comma
call arg.r_HL_A
jr c,l1624h
call arg.IDX_displcmnt
jp nc,ERROR
ld a,l
rlca
rlca
rlca
add a,006h
add a,b
ld b,a
jr l15e4h
l1624h:
add a,b
ld b,a
ld a,l
rlca
rlca
rlca
add a,b
jr l15fbh
as.CALL:
push de
call arg.cc_ZCPS
jr nc,l163ch
add a,b
ld b,a
call next_arg
jr z,l163eh
pop de
push de
l163ch:
ld b,0cdh
l163eh:
pop af
call test_expr
jp as.store_3
as.RET:
call arg.cc_ZCPS
jr nc,l164eh
add a,b
ld b,a
jr l1650h
l164eh:
ld b,0c9h
l1650h:
jp as.opc.noarg
as.JP:
push de
call arg.cc_ZCPS
jr c,l1666h
l1659h:
pop de
ld hl,l168ch
call sub_030ah
jr c,l1674h
ld b,0c3h
jr l166eh
l1666h:
add a,b
ld b,a
call next_arg
jr nz,l1659h
pop af
l166eh:
call test_expr
jp as.store_3
l1674h:
call assert_eol
ld a,b
and a
jr nz,l1680h
ld b,0e9h
jp as.opc.noarg
l1680h:
ld b,0ddh
dec a
jr z,l1687h
ld b,0fdh
l1687h:
ld l,0e9h
jp as.store_2
l168ch:
DC '(HL)'
DC '(IX)'
DC '(IY)'
DB 0
as.DJNZ:
call next_arg
ld b,010h
jr l16aeh
as.JR:
call arg.cc_ZC
jr c,l16a9h
ld b,018h
jr l16aeh
l16a9h:
add a,b
ld b,a
call assert_comma
l16aeh:
call arg.j_displ
jp as.store_2
as.IM:
call arg.imm_8bit
ld a,l
cp 003h
jr nc,error2
and a
jr z,l16c7h
ld b,056h
cp 001h
jr z,l16c7h
ld b,05eh
l16c7h:
jp gen.opc.ED2
as.RST:
call arg.imm_8bit
ld a,l
push af
add a,b
ld b,a
pop af
and 0c7h
jr nz,error2
jp as.opc.noarg
as.POP_PUSH:
call arg.IX_IY
jr c,l16e7h
call arg.zz
jr nc,error2
add a,b
jp l13ech
l16e7h:
ld a,b
add a,020h
jp l1596h
as.IN:
call arg.r_HL_A
jr nc,error2
cp 006h
jr z,error2
rlca
rlca
rlca
add a,b
ld b,a
cp 078h
jr nz,l170fh
call assert_comma
call sub_171bh
jr c,l1715h
call arg.addr_8bit
ld b,0dbh
jp as.store_2
l170fh:
call assert_comma
call sub_171bh
l1715h:
jp c,gen.opc.ED2
error2:
jp ERROR
sub_171bh:
ld hl,t__C_
jp sub_0318h
as.OUT:
call sub_171bh
jr nc,l1739h
call assert_comma
call arg.r_HL_A
jr nc,error2
cp 006h
jr z,error2
rlca
rlca
rlca
add a,b
jp l156eh
l1739h:
call arg.addr_8bit
call assert_comma
cp 'A'
jr nz,error2
inc de
ld b,0d3h
jp as.store_2
as.EX:
ld hl,b_176d_start
call sub_030ah
jp nc,ERROR
ld c,b
call assert_eol
ld b,000h
ld hl,l178eh
add hl,bc
add hl,bc
ld a,(hl)
ld (iy+000h),a
ld c,001h
inc hl
ld a,(hl)
and a
ret z
ld (iy+001h),a
ld c,002h
ret
b_176d_start:
DC 'AF,AF'''
l1773h:
DC 'DE,HL'
DC '(SP),HL'
DC '(SP),IX'
DC '(SP),IY'
db 0
l178eh:
db 008h,000h
db 0ebh,000h
db 0e3h,000h
db 0ddh,0e3h
db 0fdh,0e3h
as.DEC_INC:
call arg.IX_IY
jr c,l17b3h
call arg.ww
jr c,l17bfh
call arg.r_HL_A
jr c,l17cch
call arg.IDX_displcmnt
jp nc,ERROR
ld a,b
add a,030h
jp l1400h
l17b3h:
ld a,b
ld b,023h
cp 004h
jr z,l17bch
ld b,02bh
l17bch:
jp l14b4h
l17bfh:
push af
ld a,b
ld b,003h
cp 004h
jr z,l17c9h
ld b,00bh
l17c9h:
pop af
jr l17cfh
l17cch:
rlca
rlca
rlca
l17cfh:
add a,b
jp l13ech
arg.bit:
call arg.imm_8bit
ld a,l
cp 008h
jr nc,error3
ret
arg.j_displ:
call test_expr
push bc
push iy
pop bc
and a
sbc hl,bc
dec hl
dec hl
pop bc
call sub_1802h
ld a,h
xor l
bit 7,a
jr nz,error3
ret
arg.addr_8bit:
ld a,(de)
cp '('
jr nz,arg.imm_8bit
inc de
call arg.imm_8bit
jp test_paren_close
arg.imm_8bit:
call test_expr
sub_1802h:
ld a,h
and a
ret z
inc a
ret z
jr error3
test_expr:
push bc
call expr
pop bc
ret nc
error3:
jp ERROR
arg.zz:
push hl
ld hl,t_BC.DE.HL.AF
jr l181fh
arg.reg_16bit:
push hl
jr l181fh
arg.ww:
push hl
ld hl,t_BC.DE.HL.SP
l181fh:
push bc
call sub_030ah
jr nc,l182bh
ld a,b
rlca
rlca
rlca
rlca
scf
l182bh:
pop bc
pop hl
ret
arg.r_HL_A:
call skipbl
push bc
push hl
ld hl,t_BCDEHL_HL_A
call sub_030ah
ld a,b
pop hl
pop bc
ret
arg.IX_IY:
push hl
push bc
ld hl,t_IX.IY
call sub_030ah
jr nc,l1852h
ld a,0ddh
dec b
jr nz,l184eh
ld a,0fdh
l184eh:
ld (prefix_ixiy),a
scf
l1852h:
pop bc
pop hl
ret
arg.IDX_displcmnt:
push hl
push bc
ld a,(de)
cp '('
jr nz,l18a1h
push de
inc de
ld hl,t_IX.IY
call sub_030ah
jr nc,l18a0h
pop af
ld a,0ddh
dec b
jr nz,l186eh
ld a,0fdh
l186eh:
ld (prefix_ixiy),a
ld a,(de)
cp '+'
jr z,l1882h
cp ')'
ld hl,0
jr z,l189ah
cp '-'
jp nz,ERROR
l1882h:
push af
inc de
call arg.imm_8bit
pop af
cp '+'
jr z,l1894h
ld b,h
ld c,l
ld hl,0
and a
sbc hl,bc
l1894h:
ld a,(de)
cp ')'
jp nz,ERROR
l189ah:
inc de
pop bc
ld c,l
pop hl
scf
ret
l18a0h:
pop de
l18a1h:
pop bc
pop hl
and a
ret
arg.cc_ZCPS:
ld hl,t_tstfl_ZCPS
ld c,007h
jr l18b1h
arg.cc_ZC:
ld hl,t_tstfl_ZC
ld c,003h
l18b1h:
push bc
call sub_030ah
ld a,b
pop bc
ret nc
and c
rlca
rlca
rlca
scf
ret
assert_comma:
call next_arg
ret z
l18c2h:
jp ERROR
test_paren_close:
ld a,(de)
cp ')'
jr nz,l18c2h
inc de
ret
cmd_L:
ld hl,cmd_L
ld (cmd_rpt),hl
call expr
jr nc,l18dbh
ld hl,(last_L)
l18dbh:
push hl
pop iy
call next_arg
call get_range
jr nc,l1905h
call assert_eol
ld b,16
l18ebh:
push bc
push iy
pop hl
push hl
call p_disas_line
call crlf
pop iy
ld c,b
ld b,0
add iy,bc
ld (last_L),iy
pop bc
djnz l18ebh
ret
l1905h:
call assert_eol
ld h,b
ld l,c
ld a,b
or c
jr nz,l190fh
dec hl
l190fh:
push hl
push iy
pop hl
push hl
call p_disas_line
call crlf
pop iy
ld e,b
ld d,000h
add iy,de
ld (last_L),iy
pop hl
and a
sbc hl,de
ret z
ret c
jr l190fh
p_disas_line:
call p_label
call outbl2
call out.hl.@
call z,outbl
call outbl
sub a
ld (con_col),a
call p_disas_instr
and a
ret z
l193fh:
call outbl
ld a,(con_col)
cp 16
jr c,l193fh
p_offset:
ld de,(var.@)
ld a,d
or e
ret z
call p_char_lparen
ld a,'@'
call outchar
and a
sbc hl,de
call out_hl
jp out_rparen
p_disas_instr:
sub a
ld (l1ffdh),a
call disas_get_instrlen
jr nc,l197fh
push bc
call p_mnemonic
ex de,hl
call call_hl
pop bc
ld a,(l1ffdh)
ld hl,(l1ffbh)
scf
ret
l197fh:
call pstr_inl
DC '???'
ld b,001h
sub a
ret
disas_get_instrlen:
sub a
ld (isprefix_ixiy),a
ld a,(iy+000h)
cp 0edh
jp z,disas_pfx.ED
cp 0ddh
jr z,l19abh
cp 0fdh
jr z,l19afh
sub_19a0h:
ld a,(iy+000h)
cp 0cbh
jp z,disas_pfx.CB
jp disas_nopfx
l19abh:
ld a,1
jr l19b1h
l19afh:
ld a,2
l19b1h:
ld (isprefix_ixiy),a
call disas_pfx.DDFD
ret nc
push bc
call sub_19a0h
pop af
add a,b
ld b,a
scf
ret
disas_pfx.DDFD:
inc iy
ld hl,b_19ef_start
call test_DDFD
ld b,002h
ret c
ld hl,l1a0ah
call test_DDFD
ld b,001h
ret c
ld a,(iy+000h)
cp 0cbh
jr nz,l19edh
ld a,(iy+002h)
cp 036h
ret z
and 007h
cp 006h
jr nz,l19edh
ld b,002h
scf
ret
l19edh:
and a
ret
; DD/FD 3 byte (ix+d)/(iy+d)
b_19ef_start:
db 034h
db 035h
db 036h
db 046h
db 04eh
db 056h
db 05eh
db 066h
db 06eh
db 070h
db 071h
db 072h
db 073h
db 074h
db 075h
db 077h
db 07eh
db 086h
db 08eh
db 096h
db 09eh
db 0a6h
db 0aeh
db 0b6h
db 0beh
db 0
; DD/FD 2 byte
l1a0ah:
db 009h
db 019h
db 021h
db 022h
db 023h
db 029h
db 02ah
db 02bh
db 039h
db 0e1h
db 0e3h
db 0e5h
db 0e9h
db 0f9h
db 0
disas_pfx.ED:
inc iy
ld hl,b_1bc9_start
call sub_1a72h
ld b,2
ret c
ld hl,b_1bf4_start
call lookup_opc
ld b,2
ret c
ld hl,l228bh
call lookup_opc
ld b,3
ret c
ld hl,b_1c40_start
call lookup_opc
ld b,4
ret
disas_pfx.CB:
push iy
inc iy
ld a,(isprefix_ixiy)
and a
jr z,l1a42h
inc iy
l1a42h:
ld hl,b_1c55_start
call lookup_opc
pop iy
ld b,2
ret
disas_nopfx:
ld hl,b_1b54_start
call lookup_opc
ld b,2
ret c
ld hl,b_1ab6_start
call sub_1a72h
ld b,1
ret c
ld hl,b_1ad1_start
call lookup_opc
ld b,1
ret c
ld hl,b_1b9b_start
call lookup_opc
ret nc
ld b,3
ret
sub_1a72h:
ld a,(hl)
cp 0ffh
ret z
cp (iy+000h)
jr z,l1a7fh
inc hl
inc hl
jr sub_1a72h
l1a7fh:
inc hl
ld c,(hl)
ld hl,t_MNEMONICS
ld b,0
add hl,bc
ld de,l1c97h
scf
ret
test_DDFD:
ld a,(hl)
and a
ret z
inc hl
cp (iy+000h)
jr nz,test_DDFD
scf
ret
lookup_opc:
ld a,(iy+000h)
and (hl)
inc hl
cp (hl)
jr z,l1aa8h
inc hl
inc hl
inc hl
inc hl
ld a,(hl)
and a
jr nz,lookup_opc
ret
l1aa8h:
inc hl
ld c,(hl)
inc hl
ld e,(hl)
inc hl
ld d,(hl)
ld hl,t_MNEMONICS
ld b,000h
add hl,bc
scf
ret
; 1 byte opcodes (no parameters)
; Format: db opcode, t_MNEMONICS-index
b_1ab6_start:
db 076h,039h ;halt
db 0d9h,036h ;exx
db 0f3h,02ch ;di
db 0fbh,032h ;ei
db 000h,069h ;nop
db 007h,09eh ;rlca
db 00fh,0adh ;rrca
db 017h,098h ;rla
db 01fh,0a7h ;rra
db 027h,026h ;daa
db 02fh,023h ;cpl
db 037h,0bah ;scf
db 03fh,010h ;ccf
db 0ffh
; 1 byte opcodes
; Format: db mask, match, t_MNEMONICS-index
; dw argument formating fuction
b_1ad1_start:
db 0c0h,040h,056h ;ld r,r
dw p_arg_r_r
db 0f8h,080h,003h ;add a,r
dw p_arg_a_r
db 0f8h,088h,000h ;adc a,r
dw p_arg_a_r
db 0f8h,090h,0c9h ;sub r
dw p_arg_rs
db 0f8h,098h,0b7h ;sbc a,r
dw p_arg_a_r
db 0f8h,0a0h,006h ;and r
dw p_arg_rs
db 0f8h,0a8h,0cch ;xor r
dw p_arg_rs
db 0f8h,0b0h,06ch ;or r
dw p_arg_rs
db 0f8h,0b8h,013h ;cp r
dw p_arg_rs
db 0c7h,0c0h,08bh ;ret cc
dw p_arg_cc
db 0c7h,0c7h,0b4h ;rst
dw l1c98h
db 0ffh,0c9h,08bh ;ret
dw l1c97h
db 0cfh,0c1h,081h ;pop rr
dw p_arg_zz
db 0cfh,0c5h,084h ;push rr
dw p_arg_zz
db 0ffh,0e3h,034h ;ex (sp),hl
dw l1ca0h
db 0ffh,0e9h,052h ;jp (hl)
dw l1caeh
db 0ffh,0ebh,034h ;ex de,hl
dw p_arg_ex_dehl
db 0ffh,0f9h,056h ;ld sp,hl
dw l1cc1h
db 0cfh,003h,041h ;inc rr
dw p_arg_ww
db 0cfh,00bh,029h ;dec rr
dw p_arg_ww
db 0c7h,004h,041h ;inc r
dw p_arg_r
db 0c7h,005h,029h ;dec r
dw p_arg_r
db 0ffh,008h,034h ;ex af,af'
dw p_arg_ex_afaf
db 0cfh,009h,003h ;add hl,rr
dw l1cd3h
db 0efh,002h,056h ;ld (rr),a ;rr=bc,de
dw l1cdch
db 0efh,00ah,056h ;ld a,(rr) ;rr=bc,de
dw l1ce5h
db 0
; 2 byte opdodes
b_1b54_start:
db 0c7h,006h,056h ;ld r,nn
dw l1cfah
db 0ffh,0c6h,003h ;add a,nn
dw l1cf5h
db 0ffh,0ceh,000h ;adc a,nn
dw l1cf5h
db 0ffh,0d6h,0c9h ;sub a,nn
dw l1d09h
db 0ffh,0deh,0b7h ;sbc a,nn
dw l1cf5h
db 0ffh,0e6h,006h ;and a,nn
dw l1d09h
db 0ffh,0eeh,0cch ;xor nn
dw l1d09h
db 0ffh,0f6h,06ch ;or nn
dw l1d09h
db 0ffh,0feh,013h ;cp a,nn
dw l1d09h
db 0ffh,010h,02eh ;djnz
dw l1d1ah
db 0ffh,018h,054h ;jr
dw l1d1ah
db 0e7h,020h,054h ;jr,cc
dw l1d0fh
db 0ffh,0d3h,076h ;out (nn),a
dw l1d37h
db 0ffh,0dbh,03fh ;in a,(nn)
dw l1d29h
db 0
; 3 byte opcodes
b_1b9b_start:
db 0c7h,0c2h,052h ;jp cc,mn
dw p_arg_cc_mn
db 0c7h,0c4h,00ch ;call cc,mn
dw p_arg_cc_mn
db 0cfh,001h,056h ;ld ww,mn
dw p_arg_ww_mn
db 0ffh,0c3h,052h ;jp mn
dw p_arg_mn
db 0ffh,0cdh,00ch ;call mn
dw p_arg_mn
db 0ffh,022h,056h ;ld (mn),hl
dw p_arg_addr_hl
db 0ffh,02ah,056h ;ld hl,(mn)
dw p_arg_hl_addr
db 0ffh,032h,056h ;ld (mn),a
dw p_arg_addr_a
db 0ffh,03ah,056h ;ld a,(mn)
dw p_arg_a_addr
db 0
; Prefix ED + 1 byte opcode, no arguments
; Format: opcode, t_MNEMONICS index
b_1bc9_start:
db 044h,066h ;neg
db 045h,092h ;retn
db 04dh,08eh ;reti
db 067h,0b1h ;rrd
db 06fh,0a2h ;rld
db 0a0h,05fh ;ldi
db 0a1h,01ch ;cpi
db 0a2h,04bh ;ini
db 0a3h,07dh ;outi
db 0a8h,058h ;ldd
db 0a9h,015h ;cpd
db 0aah,044h ;ind
db 0abh,079h ;outd
db 0b0h,062h ;ldir
db 0b1h,01fh ;cpir
db 0b2h,04eh ;inir
db 0b3h,072h ;otir
db 0b8h,05bh ;lddr
db 0b9h,018h ;cpdr
db 0bah,047h ;indr
db 0bbh,06eh ;otdr
db 08bh,0d5h ;otdm
db 09bh,0d9h ;otdmr
db 083h,0deh ;otim
db 093h,0e2h ;otimr
db 076h,0ebh ;slp
db 0ffh ;<end mark>
b_1bf4_start:
db 0e7h,040h,03fh ;in r,(c) ;r=b,c,d,e
dw p_arg_in_c ;
db 0f7h,060h,03fh ;in r,(c) ;r=h,l
dw p_arg_in_c ;
db 0ffh,078h,03fh ;in r,(c) ;r=a
dw p_arg_in_c ;
db 0e7h,041h,076h ;out (c),r ;r=b,c,d,e
dw p_arg_out_c ;
db 0f7h,061h,076h ;out (c),r ;r=h,l
dw p_arg_out_c ;
db 0ffh,079h,076h ;out (c),r ;r=a
dw p_arg_out_c ;
db 0cfh,042h,0b7h ;sbc hl,rr
dw l1dcah ;
db 0cfh,04ah,000h ;adc hl,rr
dw l1dcah ;
db 0ffh,046h,03dh ;im 0
dw l1d85h ;
db 0ffh,056h,03dh ;im 1
dw l1d89h ;
db 0ffh,05eh,03dh ;im 2
dw l1d8dh ;
db 0ffh,047h,056h ;ld i,a
dw l1d92h ;
db 0ffh,057h,056h ;ld a,i
dw l1d97h ;
db 0ffh,04fh,056h ;ld r,a
dw l1d9ch ;
db 0ffh,05fh,056h ;ld a,r
dw l1da1h
db 0cfh,04ch,0d2h ;mlt rr
dw p_arg_ww
db 0c7h,004h,0eeh ;tst r
dw p_arg_r
db 0
l228bh:
db 0e7h,000h,0cfh ;in0 r,(m) ;r=b,c,d,e
dw p_arg_r_m
db 0f7h,020h,0cfh ;in0 r,(m) ;r=h,l
dw p_arg_r_m
db 0ffh,038h,0cfh ;in0 a,(m)
dw p_arg_r_m
db 0e7h,001h,0e7h ;out0 (m),r ;r=b,c,d,e
dw p_arg_m_r
db 0f7h,021h,0e7h ;out0 (m),r ;r=h,l
dw p_arg_m_r
db 0ffh,039h,0e7h ;out0 (m),a
dw p_arg_m_r
db 0ffh,064h,0eeh ;tst m
dw l1d09h
db 0ffh,074h,0f1h ;tstio m
dw l1d09h
db 0
b_1c40_start:
db 0efh,043h,056h ;ld (mn),ww ;ww=bc,de
dw p_arg_addr_ww
db 0ffh,073h,056h ;ld (mn),sp
dw p_arg_addr_ww
db 0efh,04bh,056h ;ld ww,(mn) ;ww=bc,de
dw p_arg_ww_addr
db 0ffh,07bh,056h ;ld sp,(mn)
dw p_arg_ww_addr
db 0
; CB
b_1c55_start:
db 0f8h,000h,09bh ;rlc g
dw l1e03h
db 0f8h,008h,0aah ;rrc g
dw l1e03h
db 0f8h,010h,096h ;rl g
dw l1e03h
db 0f8h,018h,0a5h ;rr g
dw l1e03h
db 0f8h,020h,0c0h ;sla g
dw l1e03h
db 0f8h,028h,0c3h ;sra g
dw l1e03h
db 0f8h,038h,0c6h ;srl g
dw l1e03h
db 0c0h,040h,009h ;bit b,g
dw p_arg_bitop
db 0c0h,080h,088h ;res b,g
dw p_arg_bitop
db 0c0h,0c0h,0bdh ;set b,g
dw p_arg_bitop
db 0
p_arg_r_r:
call p_arg_r
call p_char_comma
jp p_arg_rs
p_arg_a_r:
call p_A_comma
jp p_arg_rs
l1c97h:
ret
p_arg_r_m:
call p_arg_r
call p_char_comma
jp sub_1d2ch
p_arg_m_r:
call sub_1d2ch
call p_char_comma
jp p_arg_r
l1c98h:
ld a,(iy+000h)
and 038h
jp out_hex
l1ca0h:
call pstr_inl
DC '(SP),'
jp p_arg_hlixiy
l1caeh:
call p_char_lparen
call p_arg_hlixiy
jr out_rparen
p_arg_ex_dehl:
ld hl,l1773h
jp pstr
l1cc1h:
call pstr_inl
DC 'SP,'
jp p_arg_hlixiy
p_arg_ex_afaf:
ld hl,b_176d_start
jp pstr
l1cd3h:
call p_arg_hlixiy
call p_char_comma
jp p_arg_ww
l1cdch:
call sub_1ce8h
call p_char_comma
jp p_char_A
l1ce5h:
call p_A_comma
sub_1ce8h:
call p_char_lparen
call p_arg_ww
out_rparen:
jp p_char_rparen
l1cf5h:
call p_A_comma
jr l1d09h
l1cfah:
call p_arg_r
call p_char_comma
ld a,(isprefix_ixiy)
and a
ld a,(iy+002h)
jr nz,l1d0ch
l1d09h:
ld a,(iy+001h)
l1d0ch:
jp out_hex
l1d0fh:
ld a,(iy+000h)
and 018h
call p_arg_cc0
call p_char_comma
l1d1ah:
ld c,(iy+001h)
ld a,c
rla
sbc a,a
ld b,a
push iy
pop hl
add hl,bc
inc hl
inc hl
jr l1d4eh
l1d29h:
call p_A_comma
sub_1d2ch:
call p_char_lparen
ld a,(iy+001h)
jp l1e6bh
l1d37h:
call sub_1d2ch
jr p_char_comma_A
p_arg_cc_mn:
call p_arg_cc
call p_char_comma
p_arg_mn:
ld l,(iy+001h)
ld h,(iy+002h)
l1d4eh:
ld a,002h
sub_1d50h:
ld (l1ffdh),a
ld (l1ffbh),hl
call out_hl
ret
p_arg_ww_mn:
call p_arg_ww
call p_char_comma
jr p_arg_mn
p_arg_addr_hl:
call sub_1e13h
call p_char_comma
jp p_arg_hlixiy
p_arg_hl_addr:
call p_arg_hlixiy
call p_char_comma
jp sub_1e13h
p_arg_addr_a:
call sub_1e13h
p_char_comma_A:
call p_char_comma
p_char_A:
ld a,'A'
jr outchar1
p_arg_a_addr:
call p_A_comma
jp sub_1e13h
l1d85h:
ld a,'0'
jr outchar1
l1d89h:
ld a,'1'
jr outchar1
l1d8dh:
ld a,'2'
jr outchar1
p_A_comma:
call p_char_A
p_char_comma:
ld a,','
outchar1:
jp outchar
l1d92h:
ld hl,b_1da7_start
jr l1da4h
l1d97h:
ld hl,l1daah
jr l1da4h
l1d9ch:
ld hl,l1dadh
jr l1da4h
l1da1h:
ld hl,l1db0h
l1da4h:
jp pstr
b_1da7_start:
DC 'I,A'
l1daah:
DC 'A,I'
l1dadh:
DC 'R,A'
l1db0h:
DC 'A,R'
p_arg_in_c:
call p_arg_r
call p_char_comma
ld hl,t__C_
jp pstr
p_arg_out_c:
ld hl,t__C_
call pstr
call p_char_comma
jr p_arg_r
l1dcah:
call p_arg_hlixiy
call p_char_comma
jp p_arg_ww
p_arg_addr_ww:
call sub_1e13h
call p_char_comma
jp p_arg_ww
p_arg_ww_addr:
call p_arg_ww
call p_char_comma
jr sub_1e13h
p_arg_bitop:
ld a,(isprefix_ixiy)
and a
jr nz,l1defh
ld a,(iy+001h)
jr l1df2h
l1defh:
ld a,(iy+002h)
l1df2h:
push af
rra
rra
rra
and 007h
add a,'0'
call outchar
call p_char_comma
pop af
jr p_arg_r0
l1e03h:
ld a,(isprefix_ixiy)
and a
jr nz,l1e0eh
ld a,(iy+001h)
jr l1e11h
l1e0eh:
ld a,(iy+002h)
l1e11h:
jr p_arg_r0
sub_1e13h:
call p_char_lparen
ld l,(iy+001h)
ld h,(iy+002h)
ld a,001h
call sub_1d50h
p_char_rparen:
ld a,')'
jp outchar
p_arg_r:
ld a,(iy+000h)
rra
rra
rra
jr p_arg_r0
p_arg_rs:
ld a,(iy+000h)
p_arg_r0:
and 007h
cp 006h
jr nz,p_arg_r1
ld a,(isprefix_ixiy)
and a
ld a,006h
jr z,p_arg_r1
ld hl,b_1e78_start
ld a,(isprefix_ixiy)
dec a
jr z,l1e4dh
ld hl,l1e7bh
l1e4dh:
call pstr
ld a,(iy+001h)
and a
jp m,l1e61h
ld a,'+'
call outchar
ld a,(iy+001h)
jr l1e6bh
l1e61h:
ld a,'-'
call outchar
ld a,(iy+001h)
neg
l1e6bh:
call out_hex
jr p_char_rparen
p_arg_r1:
ld hl,t_BCDEHL_HL_A
jr p_arg
b_1e78_start:
DC '(IX'
l1e7bh:
DC '(IY'
p_arg_hlixiy:
ld a,(isprefix_ixiy)
ld hl,t_HL.IX.IY
jr p_arg
p_arg_zz:
ld hl,t_BC.DE.HL.AF
jr l1e8eh
p_arg_ww:
ld hl,t_BC.DE.HL.SP
l1e8eh:
ld a,(iy+000h)
rra
rra
rra
rra
and 003h
cp 002h
jr z,p_arg_hlixiy
jr p_arg
p_arg_cc:
ld a,(iy+000h)
p_arg_cc0:
rra
rra
rra
and 007h
ld hl,t_tstfl_ZCPS
p_arg:
ld b,a
call sel_dc_string
jp pstr
p_mnemonic:
call pstr
l1ebch:
call outbl
inc c
ld a,c
cp 5
jr c,l1ebch
ret
t_MNEMONICS:
DC 'ADC'
DC 'ADD'
DC 'AND'
DC 'BIT'
DC 'CALL'
DC 'CCF'
DC 'CP'
DC 'CPD'
DC 'CPDR'
DC 'CPI'
DC 'CPIR'
DC 'CPL'
DC 'DAA'
DC 'DEC'
DC 'DI'
DC 'DJNZ'
DC 'EI'
DC 'EX'
DC 'EXX'
DC 'HALT'
DC 'IM'
DC 'IN'
DC 'INC'
DC 'IND'
DC 'INDR'
DC 'INI'
DC 'INIR'
DC 'JP'
DC 'JR'
DC 'LD'
DC 'LDD'
DC 'LDDR'
DC 'LDI'
DC 'LDIR'
DC 'NEG'
DC 'NOP'
DC 'OR'
DC 'OTDR'
DC 'OTIR'
DC 'OUT'
DC 'OUTD'
DC 'OUTI'
DC 'POP'
DC 'PUSH'
DC 'RES'
DC 'RET'
DC 'RETI'
DC 'RETN'
DC 'RL'
DC 'RLA'
DC 'RLC'
DC 'RLCA'
DC 'RLD'
DC 'RR'
DC 'RRA'
DC 'RRC'
DC 'RRCA'
DC 'RRD'
DC 'RST'
DC 'SBC'
DC 'SCF'
DC 'SET'
DC 'SLA'
DC 'SRA'
DC 'SRL'
DC 'SUB'
DC 'XOR'
DC 'IN0'
DC 'MLT'
DC 'OTDM'
DC 'OTDMR'
DC 'OTIM'
DC 'OTIMR'
DC 'OUT0'
DC 'SLP'
DC 'TST'
DC 'TSTIO'
DB 0
t_BCDEHL_HL_A:
DC 'B'
DC 'C'
DC 'D'
DC 'E'
DC 'H'
DC 'L'
DC '(HL)'
DC 'A'
DB 0
t_BC.DE.HL.SP:
DC 'BC'
DC 'DE'
DC 'HL'
DC 'SP'
DB 0
t_BC.DE.HL.AF:
DC 'BC'
DC 'DE'
t_HL.AF:
DC 'HL'
DC 'AF'
DB 0
t_BC.DE.IY.SP:
DC 'BC'
DC 'DE'
DC 'IY'
DC 'SP'
DB 0
t_BC.DE.IX.SP:
DC 'BC'
DC 'DE'
DC 'IX'
DC 'SP'
DB 0
t_HL.IX.IY:
DC 'HL'
t_IX.IY:
DC 'IX'
DC 'IY'
DB 0
t_tstfl_ZC:
DC 'NZ'
DC 'Z'
DC 'NC'
DC 'C'
DC 'NE'
DC 'EQ'
DC 'GE'
DC 'LT'
DB 0
t_tstfl_ZCPS:
DC 'NZ'
DC 'Z'
DC 'NC'
DC 'C'
DC 'PO'
DC 'PE'
DC 'P'
DC 'M'
DC 'NE'
DC 'EQ'
DC 'GE'
DC 'LT'
DC 'NV'
DC 'V'
DB 0
t__C_:
DC '(C)'
DB 0
sub_1ffeh:
ld hl,(reg.pc)
ld a,h
or l
jr z,l2037h
ld de,BDOS
and a
sbc hl,de
ld hl,l20edh
jr z,l2031h
ld iy,(reg.pc)
call disas_get_instrlen
jp nc,ERROR
ld c,b
ld b,000h
ld hl,(reg.pc)
add hl,bc
call sub_09cah
ld iy,(reg.pc)
ld hl,b_2039_start
call lookup_opc
ccf
ret c
ex de,hl
l2031h:
call CALL_HL
call c,sub_09cah
l2037h:
scf
ret
b_2039_start:
db 0ffh,0ddh,000h ;Prefix DD
dw l20a7h
db 0ffh,0fdh,000h ;Prefix FD
dw l20ach
db 0ffh,0edh,000h ;Prefix ED
dw l20b8h
b_2048_start:
db 0ffh,0cdh,000h ;call mn
dw l2080h
db 0ffh,0c3h,000h ;jp mn
dw l208bh
db 0ffh,0e9h,000h ;jp ()
dw l20a2h
db 0ffh,0c9h,000h ;ret
dw l20dch
db 0ffh,0cfh,000h ;rst 8
dw l2115h
db 0c7h,0c7h,000h ;
dw l20f9h
db 0c7h,0c4h,000h ;
dw l2080h
db 0f7h,010h,000h ;
dw l2093h
db 0e7h,020h,000h ;
dw l2093h
db 0c7h,0c2h,000h ;
dw l208bh
db 0c7h,0c0h,000h ;
dw l20c5h
db 0
l2080h:
ld a,(b_21e2_start)
and a
jr nz,l208bh
ld a,(trace_call_flag)
and a
ret nz
l208bh:
ld l,(iy+001h)
ld h,(iy+002h)
scf
ret
l2093h:
ld c,(iy+001h)
ld a,c
rla
sbc a,a
ld b,a
ld hl,(reg.pc)
add hl,bc
inc hl
inc hl
scf
ret
l20a2h:
ld hl,(reg.l)
scf
ret
l20a7h:
ld hl,(reg.ix)
jr l20afh
l20ach:
ld hl,(reg.iy)
l20afh:
ld a,(iy+001h)
cp 0e9h
scf
ret z
and a
ret
l20b8h:
ld a,(iy+001h)
cp 04dh
jr z,l20dch
cp 045h
jr z,l20dch
and a
ret
l20c5h:
ld a,(iy+000h)
ld (l20d7h),a
ld hl,(reg.f)
push hl
pop af
call l20d7h
scf
jr c,l20dch
ret
l20d7h:
nop
and a
pop hl
inc hl
jp (hl)
l20dch:
ld a,(b_21e2_start)
and a
jr nz,l20edh
ld a,(trace_call_flag)
and a
jr z,l20edh
call l20edh
pop hl
ret
l20edh:
ld hl,(reg_sp)
ld e,(hl)
inc hl
ld d,(hl)
ex de,hl
call sub_09cah
and a
ret
l20f9h:
ld a,(l0003h)
cp (iy+000h)
ret z
ld a,(iy+000h)
and 038h
ld l,a
ld h,000h
ld a,(b_21e2_start)
and a
jr nz,l2113h
ld a,(trace_call_flag)
and a
ret nz
l2113h:
scf
ret
l2115h:
and a
ret
cmd_C:
ld hl,cmd_C
ld a,001h
jr l2122h
cmd_T:
xor a
ld hl,cmd_T
l2122h:
ld (cmd_rpt),hl
ld (trace_call_flag),a
ld a,(de)
sub 'N'
jr nz,l212eh
inc de
l212eh:
ld (trace_N_flag),a
ld a,(de)
sub 'J'
jr nz,l2137h
inc de
l2137h:
ld (trace_J_flag),a
call sub_21a6h
jr z,l2145h
ld hl,1
call get_lastarg_def
l2145h:
ld (trace_count),hl
sub a
ld (l0941h),a
l214ch:
call sub_1ffeh
jr l21a3h
l2151h:
call bp_clr_temporary
ld a,(trace_J_flag)
and a
jr nz,l216bh
ld iy,(reg.pc)
call sub_21c8h
jr z,l216bh
ld hl,b_2048_start
call lookup_opc
jr nc,l214ch
l216bh:
ld a,(trace_UW_flag)
and a
jr z,l2188h
ld de,(trace_count)
call expr
ld a,h
or l
add a,0ffh
sbc a,a
ld hl,trace_UW_flag
xor (hl)
bit 1,a
jr z,l2193h
l2185h:
jp l0902h
l2188h:
ld hl,(trace_count)
dec hl
ld (trace_count),hl
ld a,h
or l
jr z,l2185h
l2193h:
call sub_1ffeh
jr nc,l2185h
ld a,(trace_N_flag)
ld b,a
ld a,(l0941h)
or b
ld (l0941h),a
l21a3h:
jp user_go
sub_21a6h:
call skipbl
xor a
ld (trace_UW_flag),a
ld a,(de)
cp 'U'
jr z,l21b5h
cp 'W'
ret nz
l21b5h:
inc de
push af
push de
call expr
jp c,ERROR
call assert_eol
pop hl
pop af
ld (trace_UW_flag),a
sub a
ret
sub_21c8h:
ld a,(iy+000h)
cp 0edh
jr z,l21dah
and 0dfh
cp 0ddh
ret nz
ld a,(iy+001h)
cp 0e9h
ret
l21dah:
ld a,(iy+001h)
and 0f7h
cp 045h
ret
b_21e2_start:
db 0
trace_call_flag:
db 0 ;1=call, 0=trace
trace_UW_flag:
db 0 ;0 or 'U' or 'W'
trace_count:
dw 0
trace_N_flag:
db 0 ;0 if 'N'
trace_J_flag:
db 0 ;0 if 'J'
;-------------------------------------------------------------------------------
con_col:
db 0
l0941h:
db 0
bp_tab:
rept BP_CNT
rept BP_SIZE
db 0
endm
endm
expr_p1:
dw expr_buf
expr_p2:
dw expr_buf
expr_buf:
current_cseg defl $ - current_cseg
.phase current_phase + current_cseg
start:
LD SP,ldr_end+(stack-ddtz_base)
LD DE,signon ;ldr_end+(expr_buf-ddtz_base)
LD C,BDOS_PSTR
CALL BDOS
xor a
dec a
jp po,reloc
ld de,msgz80
LD C,BDOS_PSTR
CALL BDOS
jp 0
reloc:
LD HL,ldr_end+ddtz_size ;start of reloc bitmap
ld bc,0108h ;init bit counter
EXX
LD HL,(BDOS+1)
LD (ldr_end+(ddtz_bdos+1-ddtz_base)),HL
LD BC,ddtz_size-1
LD D,B
LD E,0FFH
INC DE ;size rounded up to next page boundary
INC BC ;ddtz_size
OR A
SBC HL,DE ;BDOS - size
LD (BDOS+1),HL ;-> new BDOS entry
push hl
PUSH BC
ld de,ldr_end
sbc hl,de
EX DE,HL ;-> DE
LD HL,ldr_size
add hl,bc
ld b,h
ld c,l
LD HL,TPA
reloc_lp:
EXX
djnz reloc_nl
ld b,c ;reload bit counter
LD e,(HL) ;get next 8 relocation bits
INC HL
reloc_nl:
sla e
EXX
JR NC,reloc_next
DEC HL
LD A,(HL)
ADD A,E
LD (HL),A
INC HL
LD A,(HL)
ADC A,D
LD (HL),A
reloc_next:
cpi
jp pe,reloc_lp
dec hl
POP BC
pop de
EX DE,HL
ADD HL,BC
EX DE,HL
DEC DE
LDDR
LD HL,conbuf+2-ddtz_base
ADD HL,DE
JP (HL)
current_phase defl $
.dephase
current_cseg defl $
ds EXPR_BUF_SIZE - ($ - expr_buf)
expr_bufe:
msg_Y:
dc 'Yn'
reg_Y:
rept YREG_CNT
dw 0
endm
last_S:
dw TPA
last_I:
dw 0
last_O_addr:
dw 0
last_O_val:
db 0
cmd_Q_jopt:
db -1
last_D:
dw TPA
cmdR_rindex:
db 0
high_load:
dw TPA
max_load:
dw TPA
l1262h:
dw 0
last_A:
dw TPA
cmd_A_prev:
dw TPA
prefix_ixiy:
db 0
isprefix_ixiy:
db 0
last_L:
dw TPA
l1ffbh:
dw 0
l1ffdh:
db 0
symlen_max: ;max length of symbols read so far
db 0
cur_fcb:
dw 0
fcbsym:
ds 33
ddtz_size equ $-ddtz_base
ddtz_end:
;-------------------------------------------------------------------------------
end
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