; - Cut the .PRL header (first 256 byte) end rename the result to DDTZ.COM.\r
\r
\r
+ maclib config.inc\r
+\r
; Some greneral definitions\r
\r
BS equ 08h\r
;-------------------------------------------------------------------------------\r
\r
cseg\r
-start::\r
-ddtz_base::\r
+start:\r
+ddtz_base:\r
jr reloc\r
nop\r
l0003h:\r
nop\r
ret\r
\r
-?const: jp 0 ; return console input status\r
-?conin: jp 0 ; return console input character\r
-?cono: jp 0 ; send console output character\r
-\r
;-------------------------------------------------------------------------------\r
\r
signon:\r
dc ' ('\r
\r
;-------------------------------------------------------------------------------\r
-; Determine current execution position\r
+\r
+reloc_getbit macro\r
+ local nextbit\r
+ exx\r
+ djnz nextbit\r
+ ld b,8 ;reload bit counter\r
+ ld e,(hl) ;get next 8 relocation bits\r
+ inc hl\r
+nextbit:\r
+ sla e\r
+ exx\r
+ endm\r
+\r
+;-------------------------------------------------------------------------------\r
+; Clear old position\r
+\r
+cmde_clr:\r
+ ld (hl),0\r
+ inc hl\r
+ dec bc\r
+ ld a,b\r
+ or c\r
+ jr nz,cmde_clr\r
+\r
+; Determine current position\r
\r
reloc:\r
- ld bc,(0)\r
- ld de,(2)\r
- ld sp,4\r
+ ld bc,(028h-2)\r
+ ld de,(028h)\r
+ ld a,i ;get iff2\r
+ ex af,af'\r
+ di\r
+ ld sp,028h ;rst instr needs a minimal stack\r
ld hl,0e9e1h ;opcpdes pop hl/jp (hl)\r
- ld (0),hl\r
- rst 0\r
+ ld (028h),hl\r
+ rst 028h\r
wearehere:\r
- ld (0),bc\r
- ld (2),de\r
+ ld (028h-2),bc\r
+ ld (028h),de\r
ld de,-(wearehere-ddtz_base)\r
add hl,de ; hl:\r
\r
or a\r
sbc hl,de\r
ex de,hl ; de: reloc offset\r
+ ld hl,stack\r
+ add hl,de\r
+ ld sp,hl\r
+ ex af,af'\r
+ push af\r
+ pop bc\r
+ bit 2,c\r
+ jr z,$+3\r
+ ei\r
ld hl,ddtz_end ;start of reloc bitmap\r
add hl,de\r
- ld a,l\r
- exx\r
- ld l,a\r
- exx\r
- ld a,h\r
+ push hl\r
exx\r
- ld h,a\r
- ld bc,0108h ;init bit counter b (c==reload val)\r
+ pop hl\r
+ ld b,1 ;init bit counter b\r
exx\r
+\r
LD HL,ddtz_base\r
add hl,de ;--> ddtz_base\r
- ld bc,prog_size\r
+\r
reloc_lp:\r
- EXX\r
- djnz reloc_nl\r
- ld b,c ;reload bit counter\r
- LD e,(HL) ;get next 8 relocation bits\r
- INC HL\r
-reloc_nl:\r
- sla e\r
- EXX\r
- JR NC,reloc_next\r
- DEC HL\r
+ push de\r
+ push hl\r
+\r
+ ld de,4\r
+ ld a,2\r
+ ld hl,0\r
+reloc_l:\r
+ reloc_getbit\r
+ jr nc,reloc_got\r
+ cp 16\r
+ jr z,reloc_done\r
+ add hl,de\r
+ ld b,a\r
+ ex de,hl\r
+reloc_l1:\r
+ add hl,hl\r
+ djnz reloc_l1\r
+ ex de,hl\r
+ add a,a\r
+ jr reloc_l\r
+reloc_got:\r
+ ex de,hl\r
+ ld hl,0\r
+ ld b,a\r
+reloc_bitloop:\r
+ reloc_getbit\r
+ adc hl,hl\r
+ djnz reloc_bitloop\r
+ add hl,de\r
+ pop de\r
+ add hl,de\r
+ pop de\r
+\r
LD A,(HL)\r
ADD A,E\r
LD (HL),A\r
LD A,(HL)\r
ADC A,D\r
LD (HL),A\r
-reloc_next:\r
inc hl\r
- dec bc\r
- ld a,b\r
- or c\r
- jr nz,reloc_lp\r
-\r
-;-------------------------------------------------------------------------------\r
-\r
-\r
-\r
+ jr reloc_lp\r
+reloc_done:\r
+ exx\r
+ ld (bitmap_end),hl\r
;-------------------------------------------------------------------------------\r
\r
\r
-init::\r
+init:\r
LD SP,stack\r
\r
+ if CPM\r
+\r
ld hl,(1) ;wboot addr\r
- ld de,?const\r
+ ld de,convec\r
ex de,hl\r
ld b,3\r
vini_l:\r
ld (hl),d\r
inc hl\r
djnz vini_l\r
+ else\r
+ xor a\r
+ dec a\r
+ daa ; Z80: 099H, x180+: 0F9H\r
+ cp 99h ; Result on 180 type cpus is F9 here. Thanks Hitachi\r
+ jr z,ini_z80\r
\r
+ xor a\r
+ call cinit\r
+ ld a,1\r
+ call cinit\r
+ jr ini_sign\r
+ini_z80:\r
+; if ...\r
+; .printx Error: Not yet implemented!\r
+; db "Stop\r
+; endif\r
+ endif ; CPM\r
+\r
+ini_sign:\r
ld hl,signon\r
call pstr\r
ld hl,ddtz_base\r
call out_hl\r
call pstr_inl\r
dc ' - '\r
- ld de,prog_size+bitmap_size-1\r
- add hl,de\r
+ ld hl,(bitmap_end)\r
+ dec hl\r
call out_hl\r
call pstr_inl\r
dc ')',CR,LF\r
\r
;-------------------------------------------------------------------------------\r
\r
-;; Relocation loader\r
-;;\r
-;ldr_start::\r
-; LD HL,ddtz_end ;start of reloc bitmap\r
-; ld bc,0108h ;init bit counter\r
-;\r
-; EXX\r
-; LD HL,(BDOS+1)\r
-;; LD (ddtz_base+1),HL\r
-; LD BC,prog_size+bitmap_size-1\r
-; LD D,B\r
-; LD E,0FFH\r
-; INC DE ;size rounded up to next page boundary\r
-; INC BC ;ddtz_size\r
-; OR A\r
-; SBC HL,DE ;BDOS - size\r
-;; LD (BDOS+1),HL ;-> new BDOS entry\r
-;\r
-; push hl\r
-; PUSH BC\r
-; ld de,ddtz_base\r
-; sbc hl,de\r
-; EX DE,HL ;-> DE\r
-;; LD HL,ldr_size\r
-;; add hl,bc\r
-;; ld b,h\r
-;; ld c,l\r
-; ld bc,prog_size\r
-;; LD HL,TPA ;--> ddtz_base\r
-;reloc_lp:\r
-; EXX\r
-; djnz reloc_nl\r
-; ld b,c ;reload bit counter\r
-; LD e,(HL) ;get next 8 relocation bits\r
-; INC HL\r
-;reloc_nl:\r
-; sla e\r
-; EXX\r
-; JR NC,reloc_next\r
-; DEC HL\r
-; LD A,(HL)\r
-; ADD A,E\r
-; LD (HL),A\r
-; INC HL\r
-; LD A,(HL)\r
-; ADC A,D\r
-; LD (HL),A\r
-;reloc_next:\r
-; inc hl\r
-; dec bc\r
-; ld a,b\r
-; or c\r
-; jr nz,reloc_lp\r
-; dec hl\r
-;\r
-; POP BC\r
-; pop de\r
-; EX DE,HL\r
-; ADD HL,BC\r
-; EX DE,HL\r
-; DEC DE\r
-; LDDR\r
-; LD HL,conbuf+2-ddtz_base\r
-; ADD HL,DE\r
-; JP (HL)\r
+ if CPM\r
+\r
+convec:\r
+const: jp 0 ; return console input status\r
+conin: jp 0 ; return console input character\r
+conout: jp 0 ; send console output character\r
+\r
+ else\r
+\r
+ include z180reg.inc\r
+\r
+iobyte equ 3\r
+\r
+max_device equ 3\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+; init device\r
+cinit: ; a = device\r
+ call vector_io_0\r
+ dw as0init\r
+ dw rret\r
+ dw rret\r
+ dw rret\r
+\r
+; character input status\r
+const: ; return a != 0 if character waiting\r
+ call vector_io\r
+ dw as0ista\r
+ dw null$status\r
+ dw csio_ista\r
+ dw null$status\r
+\r
+; character input\r
+conin: ; return a = input char\r
+ call vector_io\r
+ dw as0inp\r
+ dw null$input\r
+ dw csio_inp\r
+ dw null$input\r
+\r
+; character output\r
+conout: ; c = output char\r
+ call vector_io\r
+ dw as0out\r
+ dw rret\r
+ dw csio_out\r
+ dw rret\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+vector_io:\r
+ ld a,(iobyte)\r
+vector_io_0:\r
+ pop hl\r
+ cp max_device\r
+ jr c,exist\r
+ ld a,max_device ; use null device if a >= max$device\r
+exist:\r
+ call add_hl_a2\r
+ ld a,(hl)\r
+ inc hl\r
+ ld h,(hl)\r
+ ld l,a\r
+ jp (hl)\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+null$input:\r
+ ld a,1Ah\r
+rret:\r
+ ret\r
+ret$true:\r
+ or 0FFh\r
+ ret\r
+\r
+null$status:\r
+ xor a\r
+ ret\r
+\r
+;-------------------------------------------------------------------------------\r
;\r
-;ldr_end::\r
-;ldr_size equ $ - ldr_start\r
+; TC = (f PHI /(2*baudrate*Clock_mode)) - 2\r
;\r
-;; Entry from relocator\r
-;;\r
-;; ld sp,stack\r
-;; exx\r
-;; ld de,ddtz_base\r
-;; call cp_hl_de\r
-;; jr c,l0079h\r
-;; ex de,hl\r
-;;l0079h:\r
-;; ld de,TPA\r
-;;l007ch:\r
-;; dec hl\r
-;; ld (hl),000h\r
-;; ld a,h\r
-;; sub d\r
-;; ld b,a\r
-;; ld a,l\r
-;; sub e\r
-;; or b\r
-;; jr nz,l007ch\r
+; TC = (f PHI / (32 * baudrate)) - 2\r
;\r
-;; jp\r
+; Init Serial I/O for console input and output (ASCI1)\r
;\r
+\r
+\r
+\r
+as0init:\r
+ ld hl,initab0\r
+ jp ioiniml\r
+\r
+as1init:\r
+ ld hl,initab1\r
+ jp ioiniml\r
+\r
+\r
+ ld a,M_MPBT\r
+ out0 (cntlb1),a\r
+ ld a,M_RE + M_TE + M_MOD2 ;Rx/Tx enable\r
+ out0 (cntla1),a\r
+ ld a,M_RIE\r
+ out0 (stat1),a ;Enable rx interrupts\r
+\r
+ ret ;\r
+\r
+\r
+initab0:\r
+ db 1,stat0,0 ;Disable rx/tx interrupts\r
+ ;Enable baud rate generator\r
+ db 1,asext0,M_BRGMOD+M_DCD0DIS+M_CTS0DIS\r
+ db 2,astc0l,low 28, high 28\r
+ db 1,cntlb0,M_MPBT ;No MP Mode, X16\r
+ db 1,cntla0,M_RE+M_TE+M_MOD2 ;Rx/Tx enable, 8N1\r
+ db 0\r
+\r
+initab1:\r
+ db 1,stat1,0 ;Disable rx/tx ints, disable CTS1\r
+ db 1,asext1,M_BRGMOD ;Enable baud rate generator\r
+ db 2,astc1l,low 3, high 3\r
+ db 1,cntlb1,M_MPBT ;No MP Mode, X16\r
+ db 1,cntla1,M_RE+M_TE+M_MOD2 ;Rx/Tx enable, 8N1\r
+ db 0\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+ioiniml:\r
+ push bc\r
+ xor a\r
+ioml_lp:\r
+ ld b,(hl)\r
+ inc hl\r
+ cp b\r
+ jr z,ioml_e\r
+\r
+ ld c,(hl)\r
+ inc hl\r
+ otimr\r
+ jr ioml_lp\r
+ioml_e:\r
+ pop bc\r
+ ret\r
+\r
;-------------------------------------------------------------------------------\r
\r
-CMDTAB::\r
- dw ERROR ;cmd_@ ;examine/substitute the displacement register @\r
- dw ERROR ;cmd_A ;Assemble\r
+as0ista:\r
+ in0 a,(stat0)\r
+ rlca\r
+ sbc a,a\r
+ ret\r
+\r
+as1ista:\r
+ in0 a,(stat1)\r
+ rlca\r
+ sbc a,a\r
+ ret\r
+\r
+as0inp:\r
+ in0 a,(stat0)\r
+ rlca\r
+ jr nc,as0inp\r
+ in0 a,rdr0\r
+ ret\r
+\r
+as1inp:\r
+ in0 a,(stat1)\r
+ rlca\r
+ jr nc,as1inp\r
+ in0 a,rdr1\r
+ ret\r
+\r
+as0out:\r
+ in0 a,(stat0)\r
+ and M_TDRE\r
+ jr z,as0out\r
+ out0 (tdr0),c\r
+ ld a,c\r
+ ret\r
+\r
+as1out:\r
+ in0 a,(stat1)\r
+ and M_TDRE\r
+ jr z,as1out\r
+ out0 (tdr1),c\r
+ ld a,c\r
+ ret\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+\r
+csio_rx_tmp: db 0ffh\r
+\r
+csio_ista:\r
+ ld hl,csio_rx_tmp\r
+ ld a,(hl)\r
+ cp 0ffh\r
+ jr nz,csist_1\r
+ ld a,01\r
+ call csio_wr\r
+ call csio_rd\r
+ call csio_rd\r
+ ld (hl),a\r
+ sub a,0ffh\r
+ ret z\r
+csist_1:\r
+ or 0ffh\r
+ ret\r
+\r
+csio_inp:\r
+ ld hl,csio_rx_tmp\r
+ ld a,(hl)\r
+ ld (hl),0ffh\r
+ cp 0ffh\r
+ ret nz\r
+csin_1:\r
+ ld a,01\r
+ call csio_wr\r
+ call csio_rd\r
+ call csio_rd\r
+ cp 0ffh\r
+ jr z,csin_1\r
+ ret\r
+\r
+csio_rd:\r
+ ld a,M_CSIO_RE\r
+ call csio_cmd_wait\r
+ in0 a,(trdr)\r
+ ret\r
+\r
+csio_out:\r
+ ld a,02\r
+ call csio_wr\r
+ call csio_rd\r
+ call csio_rd\r
+ or a\r
+ jr z,csio_out\r
+\r
+ ld a,c\r
+ inc a ;ff..02 --> 00..03\r
+ cp 04h\r
+ jr nc,csout_1\r
+ ld a,00h\r
+ call csio_wr\r
+csout_1:\r
+ ld a,c\r
+csio_wr:\r
+ out0 (trdr),a\r
+ ld a,M_CSIO_TE\r
+csio_cmd_wait:\r
+ out0 (cntr),a\r
+cswr_wait:\r
+ in0 a,(cntr)\r
+ and M_CSIO_TE+M_CSIO_RE\r
+ jr nz,cswr_wait\r
+ ret\r
+\r
+ endif ; CPM\r
+\r
+;-------------------------------------------------------------------------------\r
+\r
+CMDTAB:\r
+; dw ERROR ;cmd_@ ;examine/substitute the displacement register @\r
+; dw ERROR ;cmd_A ;Assemble\r
dw cmd_B ;Breakpoints display/set/clear\r
dw ERROR ;cmd_C ;trace over Calls\r
dw cmd_D ;Display memory in hex and ascii\r
- dw ERROR ;\r
+ dw cmd_E ;rElocate debugger\r
dw ERROR ;cmd_F ;specify Filename and command line\r
dw cmd_G ;Go\r
dw cmd_H ;compute Hex and other expressions\r
call pstr_inl\r
dc '?',CR,LF\r
;fall thru\r
-mainloop::\r
+mainloop:\r
ld sp,stack\r
ld hl,(reg.pc)\r
call bp_clr_temporary\r
push hl\r
ld (cmd_rpt),hl\r
inc de\r
- sub '@'\r
+ sub 'B'\r
jr c,ERROR\r
- cp 'Z'+1-'@'\r
+ cp 'Z'+1-'B'\r
jr nc,ERROR\r
ld hl,CMDTAB\r
call add_hl_a2\r
sub_01d9h:\r
call pstr_inl\r
dc '-'\r
- dec hl\r
- jp cpl.hl\r
+ jp neg.hl\r
\r
out_hl_dec_neg:\r
push hl\r
l01c9h:\r
rlca\r
push af\r
- ld a,'0'/2\r
- adc a,a\r
- call outchar\r
+ and 1\r
+ call out_dgt\r
pop af\r
djnz l01c9h\r
ld a,'"'\r
push af\r
and 07fh\r
ld c,a\r
- call ?cono\r
+ call conout\r
ld hl,con_col\r
inc (hl)\r
pop af\r
push hl\r
push de\r
push bc\r
- call ?const\r
+ call const\r
and a\r
jr z,inch1\r
- call ?conin\r
+ call conin\r
scf\r
inch1:\r
pop bc\r
ret m\r
jr l0348h\r
\r
-sub_034eh:\r
+get_arg_range_target:\r
call get_arg_range\r
push hl\r
push bc\r
call next_arg\r
- call sub_0363h\r
+ call get_arg_final\r
ex de,hl\r
pop bc\r
pop hl\r
jr c,error0\r
ret\r
\r
-sub_0363h:\r
+get_arg_final:\r
call sub_035dh\r
l0366h:\r
jp assert_eol\r
inc hl\r
ld h,(hl)\r
ld l,a\r
- and a\r
+ xor a ;clr cy, a=0\r
bit 0,c\r
ret nz\r
- ld h,000h\r
+ ld h,a\r
ret\r
\r
+fact_factinv:\r
+ call fact_factor\r
+ jr cpl.hl\r
+\r
fact_factneg:\r
call fact_factor\r
+neg.hl:\r
dec hl\r
cpl.hl:\r
ld a,h\r
ld l,a\r
ret\r
\r
-fact_factinv:\r
- call fact_factor\r
- jr cpl.hl\r
-\r
fact_mem:\r
call expr1\r
jr c,error1\r
db 000h\r
db 000h\r
\r
+;-------------------------------------------------------------------------------\r
+; > E addr\r
+; relocate debugger to addr\r
+; > ER addr\r
+; relocate just below addr\r
+;\r
+; Move debugger to given address and restart.\r
+; New location must not overlap with current location.\r
+\r
+\r
+cmd_E:\r
+ call skipbl\r
+ sub 'R'\r
+ jr nz,$+3\r
+ inc de\r
+ push af\r
+ call get_arg_final\r
+\r
+ ex de,hl\r
+ ld hl,(bitmap_end)\r
+ ld bc,ddtz_base\r
+ or a\r
+ sbc hl,bc\r
+ ld b,h\r
+ ld c,l\r
+ ex de,hl\r
+ pop af\r
+ jr nz,cmde_bottom\r
+ sbc hl,bc\r
+cmde_bottom:\r
+ ld ix,cmde_clr-ddtz_base\r
+ ex de,hl ;de = dst\r
+ add ix,de\r
+ ld hl,ddtz_base ;hl = src\r
+\r
+ push hl\r
+ or a\r
+ sbc hl,de\r
+ call c,neg.hl ;abs(distance)\r
+ or a\r
+ sbc hl,bc\r
+ jp c,error\r
+ pop hl\r
+ push hl\r
+ push bc\r
+ ldir\r
+ pop bc\r
+ pop hl\r
+ jp (ix)\r
+\r
;-------------------------------------------------------------------------------\r
; > G [startaddr] [;breakp..]\r
; Go [to start] [with temporary breakpoints]\r
call bpl_init\r
\r
ld a,(ix+000h)\r
- and 003h\r
- jr z,bp_tst_e\r
+ and 003h ;User bp (temporary or permanent)?\r
+ jr z,bp_tst_e ;No, check next\r
ld e,(ix+002h)\r
ld d,(ix+003h)\r
ld hl,(reg.pc)\r
- call cp_hl_de\r
- ret z\r
+ call cp_hl_de ;Current PC is on a User bp\r
+ ret z ;Return zero\r
bp_tst_e:\r
call bpl_next\r
sub a\r
- inc a\r
- ret\r
+ inc a ;Not on a user bp\r
+ ret ;Return not zero\r
\r
bp_trace_enter:\r
call bp_get_freeslot\r
inc hl\r
ld (hl),d\r
l0a1dh:\r
-\r
call bpl_next\r
ret\r
\r
call get_line\r
call skipbl\r
jr z,l0c30h\r
- call sub_0363h\r
+ call get_arg_final\r
ex de,hl\r
pop bc\r
pop hl\r
ret\r
\r
;-------------------------------------------------------------------------------\r
-; > Vstartaddr endaddr targetaddr\r
+; > V startaddr endaddr targetaddr\r
; Verify (compare) two memory areas\r
\r
cmd_V:\r
- call sub_034eh\r
+ call get_arg_range_target\r
l0dedh:\r
push bc\r
ld a,(de)\r
; Move memory\r
\r
cmd_M:\r
- call sub_034eh\r
+ call get_arg_range_target\r
call cp_hl_de\r
jr nc,cmdm_up\r
add hl,bc\r
i.storebyte:\r
push af\r
push de\r
- ld de,TPA ;lowest allowed load address\r
+ ld de,ddtz_base ;don't load over ddtz\r
call cp_hl_de\r
- jr c,error2\r
- ld de,(BDOS+1) ;highest allowed load address\r
+ jr nc,ist_1\r
+\r
+ ld de,(bitmap_end)\r
call cp_hl_de\r
jr nc,error2\r
+ist_1:\r
ld de,(high_load)\r
call cp_hl_de\r
jr c,l1157h\r
scf\r
ret\r
\r
+;jr, djnz\r
l2093h:\r
ld c,(iy+001h)\r
ld a,c\r
jr z,l20dch\r
and a\r
ret\r
+\r
+;ret cc\r
l20c5h:\r
ld a,(iy+000h)\r
ld (l20d7h),a\r
inc hl\r
jp (hl)\r
\r
+;ret\r
l20dch:\r
l20edh:\r
ld hl,(reg_sp) ;break on return address\r
ld d,(hl)\r
ex de,hl\r
call bp_trace_enter\r
+;rst 8\r
l2115h:\r
and a\r
ret\r
\r
+;rst n\r
l20f9h:\r
ld a,(l0003h)\r
cp (iy+000h)\r
and 038h\r
ld l,a\r
ld h,000h\r
- ld a,(b_21e2_start)\r
- and a\r
- ret z\r
scf\r
ret\r
\r
pbl_loop_adr:\r
dw 0addeh\r
\r
+bitmap_end:\r
+ dw 0\r
+\r
;-------------------------------------------------------------------------------\r
\r
-conbuf::\r
+conbuf:\r
ds CONBUF_SIZE+1\r
\r
;-------------------------------------------------------------------------------\r
rept (STACK_SIZE+3)/4\r
db 0deh,0adh,0beh,0efh\r
endm\r
-stack::\r
+stack:\r
reg.l2: db 000h\r
reg.h2: db 000h\r
reg.e2: db 000h\r
reg.pc: dw TPA\r
\r
cmd_rpt:dw mainloop\r
-\r
+ db 0ffh,0ffh,0ffh\r
;-------------------------------------------------------------------------------\r
\r
ddtz_size equ $-ddtz_base\r
prog_size equ $-start\r
-ddtz_end::\r
+ddtz_end:\r
\r
;-------------------------------------------------------------------------------\r
\r
projects / ddt180.git / blobdiff