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adjusted timing of some instructions

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@470 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-29 19:33:31 +00:00
parent e0cfb2fd65
commit 28d596af36
1 changed files with 16 additions and 12 deletions
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28
cpu/DrZ80/drz80.s
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@ -4568,7 +4568,7 @@ opcode_3_8:
tst z80f,#1<<CFlag
bne opcode_1_8
add z80pc,z80pc,#1
fetch 8
fetch 7
;@ADD HL,SP
opcode_3_9:
.if FAST_Z80SP
@ -4586,7 +4586,7 @@ opcode_3_A:
orr r0,r0,r1, lsl #8
readmem8
mov z80a,r0, lsl #24
fetch 11
fetch 13
;@DEC SP
opcode_3_B:
sub z80sp,z80sp,#1
@ -4890,6 +4890,7 @@ opcode_7_6:
ldrb r0,[cpucontext,#z80if]
orr r0,r0,#Z80_HALT
strb r0,[cpucontext,#z80if]
mov z80_icount,#0
b z80_execute_end
;@LD (HL),A
opcode_7_7:
@ -5146,7 +5147,7 @@ opcode_B_F:
;@RET NZ
opcode_C_0:
tst z80f,#1<<ZFlag
beq opcode_C_9 ;@unconditional RET
beq opcode_C_9_cond ;@unconditional RET
fetch 5
;@POP BC
@ -5189,8 +5190,11 @@ opcode_C_7:
;@RET Z
opcode_C_8:
tst z80f,#1<<ZFlag
bne opcode_C_9 ;@unconditional RET
bne opcode_C_9_cond ;@unconditional RET
fetch 5
opcode_C_9_cond:
sub z80_icount,#1
;@RET
opcode_C_9:
opPOP
@ -5271,7 +5275,7 @@ opcode_C_F:
;@RET NC
opcode_D_0:
tst z80f,#1<<CFlag
beq opcode_C_9 ;@unconditional RET
beq opcode_C_9_cond ;@unconditional RET
fetch 5
;@POP DE
opcode_D_1:
@ -5313,7 +5317,7 @@ opcode_D_7:
;@RET C
opcode_D_8:
tst z80f,#1<<CFlag
bne opcode_C_9 ;@unconditional RET
bne opcode_C_9_cond ;@unconditional RET
fetch 5
;@EXX
opcode_D_9:
@ -5399,7 +5403,7 @@ opcode_D_F:
;@RET PO
opcode_E_0:
tst z80f,#1<<VFlag
beq opcode_C_9 ;@unconditional RET
beq opcode_C_9_cond ;@unconditional RET
fetch 5
;@POP HL
opcode_E_1:
@ -5454,7 +5458,7 @@ opcode_E_7:
;@RET PE
opcode_E_8:
tst z80f,#1<<VFlag
bne opcode_C_9 ;@unconditional RET
bne opcode_C_9_cond ;@unconditional RET
fetch 5
;@JP (HL)
opcode_E_9:
@ -5530,7 +5534,7 @@ opcode_E_F:
;@RET P
opcode_F_0:
tst z80f,#1<<SFlag
beq opcode_C_9 ;@unconditional RET
beq opcode_C_9_cond ;@unconditional RET
fetch 5
;@POP AF
opcode_F_1:
@ -5588,7 +5592,7 @@ opcode_F_7:
;@RET M
opcode_F_8:
tst z80f,#1<<SFlag
bne opcode_C_9 ;@unconditional RET
bne opcode_C_9_cond ;@unconditional RET
fetch 5
;@LD SP,HL
opcode_F_9:
@ -5599,7 +5603,7 @@ opcode_F_9:
.else
mov z80sp,z80hl, lsr #16
.endif
fetch 4
fetch 6
;@JP M,$+3
opcode_F_A:
tst z80f,#1<<SFlag
@ -6641,7 +6645,7 @@ opcode_DD_NF:
;@ b end_loop
opcode_DD_NF2:
fetch 15
fetch 23
;@ notaz: we don't want to deadlock here
;@ mov r0,#0xDD0000
;@ orr r0,r0,#0xCB00