; $Id$
;
+#if EM_Z80
+
.dseg
z_regs:
-z_b: .byte 1
-z_c: .byte 1
-z_d: .byte 1
-z_e: .byte 1
-z_h: .byte 1
-z_l: .byte 1
-
- .equ oz_b = 0
- .equ oz_c = 1
- .equ oz_d = 2
- .equ oz_e = 3
- .equ oz_h = 4
- .equ oz_l = 5
-
-
-#if EM_Z80
-z_b2: .byte 1
-z_c2: .byte 1
-z_d2: .byte 1
-z_e2: .byte 1
-z_h2: .byte 1
-z_l2: .byte 1
-z_f2: .byte 1
-z_a2: .byte 1
- .equ r2ofs = z_b2-z_b
- .equ oz_b2 = 6
- .equ oz_c2 = 7
- .equ oz_d2 = 8
- .equ oz_e2 = 9
- .equ oz_h2 = 10
- .equ oz_l2 = 11
- .equ oz_f2 = 12
- .equ oz_a2 = 13
-
-z_xh: .byte 1
-z_xl: .byte 1
-z_yh: .byte 1
-z_yl: .byte 1
-
-z_i: .byte 1
-z_r: .byte 1
- .equ oz_xh = 14
- .equ oz_xl = 15
- .equ oz_yh = 16
- .equ oz_yl = 17
- .equ oz_i = 18
- .equ oz_r = 19
-
-z_istat: .byte 1
- .equ oz_istat = 20
+z_c2:
+ .equ oz_c2 = z_c2 - z_regs
+ .byte 1
+z_b2:
+ .equ oz_b2 = z_b2 - z_regs
+ .byte 1
+z_e2:
+ .equ oz_e2 = z_e2 - z_regs
+ .byte 1
+z_d2:
+ .equ oz_d2 = z_d2 - z_regs
+ .byte 1
+z_l2:
+ .equ oz_l2 = z_l2 - z_regs
+ .byte 1
+z_h2:
+ .equ oz_h2 = z_h2 - z_regs
+ .byte 1
+z_f2:
+ .equ oz_f2 = z_f2 - z_regs
+ .byte 1
+z_a2:
+ .equ oz_a2 = z_a2 - z_regs
+ .byte 1
+
+z_xl:
+ .equ oz_xl = z_xl - z_regs
+ .byte 1
+z_xh:
+ .equ oz_xh = z_xh - z_regs
+ .byte 1
+z_yl:
+ .equ oz_yl = z_yl - z_regs
+ .byte 1
+z_yh:
+ .equ oz_yh = z_yh - z_regs
+ .byte 1
+z_i:
+ .equ oz_i = z_i - z_regs
+ .byte 1
+z_r:
+ .equ oz_r = z_r - z_regs
+ .byte 1
+
+z_istat:
+ .equ oz_istat = z_istat - z_regs
+ .byte 1
.equ IM_MASK = 0x03 ;Mask IM 0..2
.equ IM0 = 0
.equ IFF1 = 2 ;IFF1 Flag
.equ IFF2 = 3 ;IFF2 Flag
-
#endif
.cseg
ldiw z_pc,IPLADDR
ldiw y,z_regs
- cbi flags,trace
clr intstat
printnewline
;TODO: hier kommt die Interruptbehandlung rein
- cpse intstat,_0 ;Fast path if no trace, int, break, ...
+ cpse intstat,_0 ;Fast path if no trace, int, break, ...
rjmp int_test
int_instr:
int_test:
sbrs intstat,i_trace
rjmp int_notrace
+ sbrs intstat,i_halt
+ rjmp int_notrace
cpi z_pch,DBG_TRACE_BOTTOM
brlo int_notrace
cpi z_pch,DBG_TRACE_TOP
; ret
.macro m_do_fetch_b
- ldd opl,y+oz_b
+ mov opl,z_b
.endm
.equ do_fetch_b = 0
+; mov opl,z_b
; ldd opl,y+oz_b
; ret
.macro m_do_fetch_c
- ldd opl,y+oz_c
+ mov opl,z_c
.endm
.equ do_fetch_c = 0
+; mov opl,z_c
; ldd opl,y+oz_c
; ret
.macro m_do_fetch_d
- ldd opl,y+oz_d
+ mov opl,z_d
.endm
.equ do_fetch_d = 0
; ret
.macro m_do_fetch_e
- ldd opl,y+oz_e
+ mov opl,z_e
.endm
.equ do_fetch_e = 0
; ret
.macro m_do_fetch_h
- ldd opl,y+oz_h
+ mov opl,z_h
.endm
.equ do_fetch_h = 0
-; ldd opl,y+oz_h
+; mov opl,z_h
; ret
.macro m_do_fetch_l
- ldd opl,y+oz_l
+ mov opl,z_l
.endm
.equ do_fetch_l = 0
-; ldd opl,y+oz_l
+; mov opl,z_l
; ret
do_fetch_af:
- mov opl,z_flags
- mov oph,z_a
+ movw opl,z_flags
ret
-do_fetch_bc:
- ldd opl,y+oz_c
- ldd oph,y+oz_b
- ret
+.macro m_do_fetch_bc
+ movw opl,z_c
+.endm
-do_fetch_de:
- ldd opl,y+oz_e
- ldd oph,y+oz_d
- ret
+.equ do_fetch_bc = 0
+; movw opl,z_c
+; ret
+
+.macro m_do_fetch_de
+ movw opl,z_e
+.endm
-do_fetch_hl:
- ldd opl,y+oz_l
- ldd oph,y+oz_h
+.equ do_fetch_de = 0
+; ldd opl,y+oz_e
+; ldd oph,y+oz_d
ret
+.macro m_do_fetch_hl
+ movw opl,z_l
+.endm
+
+.equ do_fetch_hl = 0
+; movw opl,z_l
+; ret
+
.macro m_do_fetch_sp
movw opl,z_spl
.endm
; ret
do_fetch_mbc:
- ldd xh,y+oz_b
- ldd xl,y+oz_c
+ movw x,z_c
mem_read_d z_a
ret
do_fetch_mde:
- ldd xh,y+oz_d
- ldd xl,y+oz_e
+ movw x,z_e
+; ldd xh,y+oz_d
+; ldd xl,y+oz_e
mem_read_d z_a
ret
do_fetch_mhl:
- ldd xh,y+oz_h
- ldd xl,y+oz_l
+ movw x,z_l
mem_read_d opl
ret
;.endm
;.equ do_store_b = 0
do_store_b:
- std y+oz_b,opl
+ mov z_b,opl
ret
do_store_c:
- std y+oz_c,opl
+ mov z_c,opl
ret
do_store_d:
- std y+oz_d,opl
+ mov z_d,opl
ret
do_store_e:
- std y+oz_e,opl
+ mov z_e,opl
ret
do_store_h:
- std y+oz_h,opl
+ mov z_h,opl
ret
do_store_l:
- std y+oz_l,opl
+ mov z_l,opl
ret
do_store_af:
- mov z_a,oph
- mov z_flags,opl
+ movw z_flags,opl
ret
do_store_bc:
- std y+oz_b,oph
- std y+oz_c,opl
+ movw z_c,opl
ret
do_store_de:
- std y+oz_d,oph
- std y+oz_e,opl
+ movw z_e,opl
+; std y+oz_d,oph
+; std y+oz_e,opl
ret
do_store_hl:
- std y+oz_h,oph
- std y+oz_l,opl
+ movw z_l,opl
ret
do_store_mbc:
- ldd xh,y+oz_b
- ldd xl,y+oz_c
+ movw x,z_c
mem_write_s z_a
ret
do_store_mde:
- ldd xh,y+oz_d
- ldd xl,y+oz_e
+ movw x,z_e
+; ldd xh,y+oz_d
+; ldd xl,y+oz_e
mem_write_s z_a
ret
do_store_mhl:
- ldd xh,y+oz_h
- ldd xl,y+oz_l
+ movw x,z_l
mem_write_s opl
ret
do_op_inc:
#if EM_Z80
+#if 1
+ andi z_flags,(1<<ZFL_C) ; preserve C-, Clear N-flag
+ subi opl,-1
+ in temp,sreg
+ sbrc temp,AVR_N
+ sbr z_flags,(1<<ZFL_S)
+ sbrc temp,AVR_Z
+ sbr z_flags,(1<<ZFL_Z)
+ sbrs temp,AVR_H
+ sbr z_flags,(1<<ZFL_H)
+ sbrc temp,AVR_V
+ sbr z_flags,(1<<ZFL_P)
+#else
andi z_flags,(1<<ZFL_C) ; preserve C-, Clear N-flag
ldi temp,1
add opl,temp
bmov z_flags,ZFL_Z, temp,AVR_Z
bmov z_flags,ZFL_H, temp,AVR_H
bmov z_flags,ZFL_P, temp,AVR_V
+#endif
#else /* 8080 */
andi z_flags,(1<<ZFL_C)|(1<<ZFL_H) ; preserve C- and H-flag
inc opl
#endif
ret
+#if 0
+ bst z_flags,ZFL_C ; save C flag
+ subi opl,-1
+ in temp,sreg
+ ldpmx z_flags,flagmap_tab,temp
+ bld z_flags,ZFL_C
+ ret
+#endif
+
do_op_inca:
#if EM_Z80
andi z_flags,(1<<ZFL_C) ; preserve C-, Clear N-flag
- ldi temp,1
- add z_a,temp
+ subi z_a,-1
in temp,sreg
bmov z_flags,ZFL_S, temp,AVR_N
bmov z_flags,ZFL_Z, temp,AVR_Z
- bmov z_flags,ZFL_H, temp,AVR_H
+ sbrs temp,AVR_H
+ sbr z_flags,(1<<ZFL_H)
bmov z_flags,ZFL_P, temp,AVR_V
#else /* 8080 */
andi z_flags,(1<<ZFL_C)|(1<<ZFL_H) ; preserve C- and H-flag
;|Mnemonic |SZHPNC|Description |Notes |
;----------------------------------------------------------------
;|DEC r |***V1-|Decrement |s=s-1 |
-;|DEC [HL] |***V0-|Increment |[HL]=[HL]-1 |
-;|DEC [xx+d]|***V0-|Increment |[xx+d]=[xx+d]-1 |
+;|DEC [HL] |***V1-|Increment |[HL]=[HL]-1 |
+;|DEC [xx+d]|***V1-|Increment |[xx+d]=[xx+d]-1 |
;|----------|SZHP C|---------- 8080 ----------------------------|
;|DEC r |**-P -|Increment |r=r-1 |
;|DEC [HL] |**-P -|Increment |[HL]=[HL]-1 |
do_op_deca:
#if EM_Z80
- ldi temp,1
- sub z_a,temp
+ subi z_a,1
in temp,sreg
bmov z_flags,ZFL_S, temp,AVR_N
bmov z_flags,ZFL_Z, temp,AVR_Z
sbci oph,high(-1)
ret
+do_op_incHL:
+ sub z_l,_255
+ sbc z_h,_255
+ ret
+
+do_op_incDE:
+ sub z_e,_255
+ sbc z_d,_255
+ ret
+
+do_op_incBC:
+ sub z_c,_255
+ sbc z_b,_255
+ ret
+
;----------------------------------------------------------------
;|Mnemonic |SZHPNC|Description |Notes |
;----------------------------------------------------------------
sbci oph, 0
ret
+do_op_decHL:
+ add z_l,_255
+ adc z_h,_255
+ ret
+
+do_op_decDE:
+ add z_e,_255
+ adc z_d,_255
+ ret
+
+do_op_decBC:
+ add z_c,_255
+ adc z_b,_255
+ ret
+
;----------------------------------------------------------------
;|Mnemonic |SZHPNC|Description |Notes |
;----------------------------------------------------------------
;
;
do_op_addhl:
- ldd temp,y+oz_l
- ldd temp2,y+oz_h
- add opl,temp
- adc oph,temp2
- std y+oz_l,opl
- std y+oz_h,oph
+ add z_l,opl
+ adc z_h,oph
in temp,sreg
bmov z_flags,ZFL_C, temp,AVR_C
do_z80_flags_H
;
do_op_sthl: ;store hl to mem loc in opl:h
movw xl,opl
- ldd temp,y+oz_l
- mem_write
+ mem_write_s z_l
adiw xl,1
- ldd temp,y+oz_h
- mem_write
+ mem_write_s z_h
ret
;----------------------------------------------------------------
;-----------------------------Z80--------------------------------
;
do_op_exhl:
- ldd temp,y+oz_l
- ldd temp2,y+oz_h
- std y+oz_l,opl
- std y+oz_h,oph
- movw opl,temp
+ movw temp,z_l
+ movw z_l,opl
+ movw opl,temp
ret
;----------------------------------------------------------------
; (Joe G.)
do_op_DJNZ: ; decremt B, jump B=0
- ldd temp,y+oz_b ; B in temp
- dec temp ; temp decrementieren
- std y+oz_b,temp ; temp in B
+ dec z_b ; B decrementieren
breq do_op_DJNZ_Z ; bei B=0
subi opl, 0x80 ; z_pc + e im Zweierkomplement
subi z_pcl,0x80
#else
do_op_djnz:
- ldd temp,y+oz_b
- dec temp
- std y+oz_b,temp
+ dec z_b
brne opdjnze
pop temp ; nix tun
pop temp ; direkt zurueck zu main
;|EXX |------|Exchange |qq<->qq' (except AF)|
+#if 1
+
+do_op_EXX:
+ ldd temp ,y+oz_c2
+ ldd temp2,y+oz_b2
+ std y+oz_c2,z_c
+ std y+oz_b2,z_b
+ movw z_c,temp
+
+ ldd temp ,y+oz_e2
+ ldd temp2,y+oz_d2
+ std y+oz_e2,z_e
+ std y+oz_d2,z_d
+ movw z_e,temp
+
+ ldd temp ,y+oz_l2
+ ldd temp2,y+oz_h2
+ std y+oz_l2,z_l
+ std y+oz_h2,z_h
+ movw z_l,temp
+ ret
+#else
+
do_op_EXX:
ldiw z,z_b
ldi temp3,6
brne opexx_loop
ret
+#endif
+
#else
do_op_djnz:
do_op_EXAF:
instr fetch_nop, op_nop, store_nop ;00 ;NOP
instr fetch_DIR16, op_nop, store_BC ;01 nn nn ;LD BC,nn
instr fetch_nop, op_nop, store_MBC ;02 ;LD (BC),A
-instr fetch_BC, op_INC16, store_BC ;03 ;INC BC
+;instr fetch_BC, op_INC16, store_BC ;03 ;INC BC
+instr fetch_nop, op_INCBC, store_nop ;03 ;INC BC
instr fetch_B, op_INC, store_B ;04 ;INC B
instr fetch_B, op_DEC, store_B ;05 ;DEC B
instr fetch_DIR8, op_nop, store_B ;06 ;LD B,n
instr fetch_nop, op_EXAF, store_nop ;08 ;EX AF,AF'
instr fetch_BC, op_ADDHL, store_nop ;09 ;ADD HL,BC
instr fetch_MBC, op_nop, store_nop ;0A ;LD A,(BC)
-instr fetch_BC, op_DEC16, store_BC ;0B ;DEC BC
+;instr fetch_BC, op_DEC16, store_BC ;0B ;DEC BC
+instr fetch_nop, op_DECBC, store_nop ;0B ;DEC BC
instr fetch_C, op_INC, store_C ;0C ;INC C
instr fetch_C, op_DEC, store_C ;0D ;DEC C
instr fetch_DIR8, op_nop, store_C ;0E nn ;LD C,n
instr fetch_DIR8, op_DJNZ, store_nop ;10 oo ;DJNZ o
instr fetch_DIR16, op_nop, store_DE ;11 nn nn ;LD DE,nn
instr fetch_nop, op_nop, store_MDE ;12 ;LD (DE),A
-instr fetch_DE, op_INC16, store_DE ;13 ;INC DE
+;instr fetch_DE, op_INC16, store_DE ;13 ;INC DE
+instr fetch_nop, op_INCDE, store_nop ;13 ;INC DE
instr fetch_D, op_INC, store_D ;14 ;INC D
instr fetch_D, op_DEC, store_D ;15 ;DEC D
instr fetch_DIR8, op_nop, store_D ;16 nn ;LD D,n
instr fetch_DIR8, op_nop, store_pcrel ;18 oo ;JR o
instr fetch_DE, op_ADDHL, store_nop ;19 ;ADD HL,DE
instr fetch_MDE, op_nop, store_nop ;1A ;LD A,(DE)
-instr fetch_DE, op_DEC16, store_DE ;1B ;DEC DE
+;instr fetch_DE, op_DEC16, store_DE ;1B ;DEC DE
+instr fetch_nop, op_DECDE, store_nop ;1B ;DEC DE
instr fetch_E, op_INC, store_E ;1C ;INC E
instr fetch_E, op_DEC, store_E ;1D ;DEC E
instr fetch_DIR8, op_nop, store_E ;1E nn ;LD E,n
instr fetch_DIR8, op_IFNZ, store_pcrel ;20 oo ;JR NZ,o
instr fetch_DIR16, op_nop, store_HL ;21 nn nn ;LD HL,nn
instr fetch_DIR16, op_STHL, store_nop ;22 nn nn ;LD (nn),HL
-instr fetch_HL, op_INC16, store_HL ;23 ;INC HL
+;instr fetch_HL, op_INC16, store_HL ;23 ;INC HL
+instr fetch_nop, op_INCHL, store_nop ;23 ;INC HL
instr fetch_H, op_INC, store_H ;24 ;INC H
instr fetch_H, op_DEC, store_H ;25 ;DEC H
instr fetch_DIR8, op_nop, store_H ;26 nn ;LD H,n
instr fetch_DIR8, op_IFZ, store_pcrel ;28 oo ;JR Z,o
instr fetch_HL, op_ADDHL, store_nop ;29 ;ADD HL,HL
instr fetch_DIR16, op_RMEM16, store_HL ;2A nn nn ;LD HL,(nn)
-instr fetch_HL, op_DEC16, store_HL ;2B ;DEC HL
+;instr fetch_HL, op_DEC16, store_HL ;2B ;DEC HL
+instr fetch_nop, op_DECHL, store_nop ;2B ;DEC HL
instr fetch_L, op_INC, store_L ;2C ;INC L
instr fetch_L, op_DEC, store_L ;2D ;DEC L
instr fetch_DIR8, op_nop, store_L ;2E nn ;LD L,n
do_op_BIT1:
ldi temp,0x02
rjmp opbit
- checkspace PC, 8
+
+ checkspace PC, 7
do_op_BIT0:
ldi temp,0x01
opbit:
- and temp,opl
- in temp,sreg
+ andi z_flags,~((1<<ZFL_N)|(1<<ZFL_Z))
ori z_flags,(1<<ZFL_H)
- andi z_flags,~(1<<ZFL_N)
- bmov z_flags,ZFL_Z, temp,AVR_Z
+ and temp,opl
+ brne opbite
+ ori z_flags,(1<<ZFL_Z)
+opbite:
ret
;.equ do_store_b = 0
checkspace PC, 2
do_store2_b:
- std y+oz_b,opl
+ mov z_b,opl
ret
checkspace PC, 2
do_store2_c:
- std y+oz_c,opl
+ mov z_c,opl
ret
checkspace PC, 2
do_store2_d:
- std y+oz_d,opl
+ mov z_d,opl
ret
checkspace PC, 2
do_store2_e:
- std y+oz_e,opl
+ mov z_e,opl
ret
checkspace PC, 2
do_store2_h:
- std y+oz_h,opl
+ mov z_h,opl
ret
checkspace PC, 2
do_store2_l:
- std y+oz_l,opl
+ mov z_l,opl
ret
checkspace PC, 2
checkspace PC, 4
do_fetch2_mhl:
- ldd xh,y+oz_h
- ldd xl,y+oz_l
+ movw x,z_l
mem_read_d opl
ret
mov temp,opl
lcall printhex
printstring " -> ("
- ldd temp,y+oz_c
+ mov temp,z_c
lcall printhex
printstring ") "
.endif
mov temp,opl
- ldd temp2,y+oz_c
+ mov temp2,z_c
lcall portWrite
ret
do_op_stbc: ;store bc to mem loc in opl:h
movw xl,opl
- ldd temp,y+oz_c
- mem_write
+ mem_write_s z_c
adiw xl,1
- ldd temp,y+oz_b
- mem_write
+ mem_write_s z_b
ret
;----------------------------------------------------------------
;
do_op_stde: ;store de to mem loc in opl:h
movw xl,opl
- ldd temp,y+oz_e
- mem_write
+ mem_write_s z_e
adiw xl,1
- ldd temp,y+oz_d
- mem_write
+ mem_write_s z_d
ret
;----------------------------------------------------------------
;
do_op_ADCHL:
- ldd temp,y+oz_l
- ldd temp2,y+oz_h
- clc
- sbrc z_flags,ZFL_C
- sec
- adc opl,temp
- in temp,sreg ; save lower Z
- adc oph,temp2
- in temp2,sreg
- std y+oz_l,opl
- std y+oz_h,oph
- and temp,temp2 ; 16bit Z
+ lsr z_flags ; ZFL_C --> Carry
ldi z_flags,0 ; clear N
+ adc z_l,opl
+ in temp,sreg ; save lower Z
+ adc z_h,oph
+ in temp2,sreg
+
+ and temp,temp2 ; 16bit Z
bmov z_flags,ZFL_C, temp2,AVR_C
bmov z_flags,ZFL_P, temp2,AVR_V
bmov z_flags,ZFL_H, temp2,AVR_H
checkspace PC, 24
do_op_sbchl:
- ldd temp,y+oz_l
- ldd temp2,y+oz_h
- cp temp,opl ; set z
- clc
- sbrc z_flags,ZFL_C
- sec
- sbc temp,opl
- sbc temp2,oph
- std y+oz_l,temp
- std y+oz_h,temp2
+ lsr z_flags ; get Z80 carry
+ sez ; set z
+ sbc z_l,opl
+ sbc z_h,oph
in temp,sreg
- ldi z_flags,(1<<ZFL_N) ; set N
+ ldi z_flags,(1<<ZFL_N) ; set N
bmov z_flags,ZFL_C, temp,AVR_C
bmov z_flags,ZFL_P, temp,AVR_V
bmov z_flags,ZFL_H, temp,AVR_H
;|LDIR |--000-|Load, Inc., Repeat |LDI till BC=0 |
;
- checkspace PC, 19
+ checkspace PC, 13
op_LDxx_common:
- ldd xh,y+oz_h ;H
- ldd xl,y+oz_l ;L
+ movw x,z_l ;HL
; mem_read_ds temp, z
lcall dram_read ; temp = (HL)
- movw z,x
-
- ldd xh,y+oz_d ;D
- ldd xl,y+oz_e ;E
+ movw x,z_e ;DE
; mem_write_ds x, temp
lcall dram_write ; (DE) = temp
- ldd oph,y+oz_b ;B
- ldd opl,y+oz_c ;C
-
cbr z_flags,(1<<ZFL_H) | (1<<ZFL_P) | (1<<ZFL_N)
- subi opl,1
- sbci oph,0
+
+ movw x,z_c
+ sbiw x,1 ;BC--
+ movw z_c,x
breq PC+2
sbr z_flags,(1<<ZFL_P)
- std y+oz_c,opl ;C
- std y+oz_b,oph ;B
ret
- checkspace PC, 8
+ checkspace PC, 6
do_op_LDI:
rcall op_LDxx_common
- adiw z,1
- adiw x,1
- std y+oz_e,xl ;E
- std y+oz_d,xh ;D
- std y+oz_l,zl ;L
- std y+oz_h,zh ;H
+ sub z_e,_255 ;-low(-1) DE++
+ sbc z_d,_255 ;-high(-1)
+ sub z_l,_255 ;-low(-1) HL++
+ sbc z_h,_255 ;-high(-1)
ret
- checkspace PC, 8
+ checkspace PC, 6
do_op_LDD:
rcall op_LDxx_common
- sbiw z,1
- sbiw x,1
- std y+oz_e,xl ;E
- std y+oz_d,xh ;D
- std y+oz_l,zl ;L
- std y+oz_h,zh ;H
+ add z_e,_255 ;+low(-1) DE--
+ adc z_d,_255 ;+high(-1)
+ add z_l,_255 ;+low(-1) HL--
+ adc z_h,_255 ;+high(-1)
ret
checkspace PC, 5
checkspace PC, 21
op_CPxx_common:
- ldd xh,y+oz_h ; H
- ldd xl,y+oz_l ; L
- ldd zh,y+oz_b ; B
- ldd zl,y+oz_c ; C
+ movw x,z_l ; HL
+
+ movw z,z_c ;BC
cbr z_flags,(1<<ZFL_S)|(1<<ZFL_Z)|(1<<ZFL_H)|(1<<ZFL_P)
sbr z_flags,(1<<ZFL_N)
lcall dram_read ; temp = (HL)
-; mov temp2,z_a
-; sub temp2,temp ; A - (HL)
- cp z_a,temp
+ cp z_a,temp ; A - (HL)
brpl PC+2
sbr z_flags,(1<<ZFL_S)
sbiw z,1 ; BC--
breq PC+2
sbr z_flags,(1<<ZFL_P)
- std y+oz_c,zl ; C
- std y+oz_b,zh ; B
+ movw z_c,z ;BC
ret
checkspace PC, 5
do_op_CPI:
rcall op_CPxx_common
adiw x,1 ; HL++
- std y+oz_l,xl ; L
- std y+oz_h,xh ; H
+ movw z_l,x ; HL
ret
do_op_CPD:
rcall op_CPxx_common
sbiw x,1 ; HL--
- std y+oz_l,xl ; L
- std y+oz_h,xh ; H
+ movw z_l,x ; HL
ret
checkspace PC, 7
;|INIR |?1??1-|Input, Inc., Repeat |INI till B=0 |
;|INDR |?1??1-|Input, Dec., Repeat |IND till B=0 |
- checkspace PC, 15
+ checkspace PC, 12
op_INxx_common:
cbr z_flags,(1<<ZFL_Z)
sbr z_flags,(1<<ZFL_N)
- ldd temp2,y+oz_c ;C
+ mov temp2,z_c ;C
lcall portRead
- ldd xh,y+oz_h ;H
- ldd xl,y+oz_l ;L
+ movw x,z_l ;HL
lcall dram_write
- ldd temp,y+oz_b ;B
- dec temp
- std y+oz_b,temp ;B
+ dec z_b ;B
brne PC+2
sbr z_flags,(1<<ZFL_Z)
ret
- checkspace PC, 5
+ checkspace PC, 4
do_op_INI:
rcall op_INxx_common
adiw x,1
- std y+oz_l,xl ;L
- std y+oz_h,xh ;H
+ movw z_l,x ;HL
ret
- checkspace PC, 5
+ checkspace PC, 4
do_op_IND:
rcall op_INxx_common
sbiw x,1
- std y+oz_l,xl ;L
- std y+oz_h,xh ;H
+ movw z_l,x ;HL
ret
checkspace PC, 5
;|OTIR |?1??1-|Output, Inc., Repeat |OUTI till B=0 |
;|OTDR |?1??1-|Output, Dec., Repeat |OUTD till B=0 |
- checkspace PC, 13
+ checkspace PC, 12
op_OUTxx_common:
- cbr z_flags,(1<<ZFL_Z)
- sbr z_flags,(1<<ZFL_N)
+ movw x,z_l ;HL
lcall dram_read ;temp = (z)
- ldd temp2,y+oz_c ;C
+ mov temp2,z_c ;C
lcall portWrite
- ldd temp,y+oz_b ;B
- dec temp
- std y+oz_b,temp ;B
+ cbr z_flags,(1<<ZFL_Z)
+ sbr z_flags,(1<<ZFL_N)
+ dec z_b ;B
brne PC+2
sbr z_flags,(1<<ZFL_Z)
ret
- checkspace PC, 8
+ checkspace PC, 4
do_op_OUTI:
- ldd xh,y+oz_h ;H
- ldd xl,y+oz_l ;L
- adiw x,1
- std y+oz_l,xl ;L
- std y+oz_h,xh ;H
- sbiw x,1
rcall op_OUTxx_common
+ sub z_l,_255 ;-low(-1)
+ sbc z_h,_255 ;-high(-1)
ret
- checkspace PC, 8
+ checkspace PC, 4
do_op_OUTD:
- ldd xh,y+oz_h ;H
- ldd xl,y+oz_l ;L
- sbiw x,1
- std y+oz_l,xl ;L
- std y+oz_h,xh ;H
- adiw x,1
rcall op_OUTxx_common
+ add z_l,_255 ;+low(-1)
+ adc z_h,_255 ;+high(-1)
ret
checkspace PC, 5
projects / avrcpm.git / blobdiff