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Merge pull request #2180 from zanac/z80-busyloop

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Z80: the delay-loop shortcut counts the DEC cycles
This commit is contained in:
arcadez2003 authored and GitHub committed 2026-10-29 22:11:06 +00:00
2 parents ff5f1bd024 f80f7223f4
commit 0ad96d5104
1 file changed
+6
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src/cpu/z80/z80.c
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@@ -3487,6 +3487,7 @@ if( _BC > 1 && _PCD < 0xfffc ) { \
if( op3==0x20 && op4==0xfb ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x0b] + \
cc[Z80_TABLE_op][0x78] + \
cc[Z80_TABLE_op][0xb1] + \
cc[Z80_TABLE_op][0x20] + \
@@ -3505,6 +3506,7 @@ if( _BC > 1 && _PCD < 0xfffc ) { \
if( (ad1 + 256 * ad2) == (_PCD - 1) ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x0b] + \
cc[Z80_TABLE_op][0x78] + \
cc[Z80_TABLE_op][0xb1] + \
cc[Z80_TABLE_op][0xc2] + \
@@ -3530,6 +3532,7 @@ if( _DE > 1 && _PCD < 0xfffc ) { \
if( op3==0x20 && op4==0xfb ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x1b] + \
cc[Z80_TABLE_op][0x7a] + \
cc[Z80_TABLE_op][0xb3] + \
cc[Z80_TABLE_op][0x20] + \
@@ -3548,6 +3551,7 @@ if( _DE > 1 && _PCD < 0xfffc ) { \
if( (ad1 + 256 * ad2) == (_PCD - 1) ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x1b] + \
cc[Z80_TABLE_op][0x7a] + \
cc[Z80_TABLE_op][0xb3] + \
cc[Z80_TABLE_op][0xc2] + \
@@ -3573,6 +3577,7 @@ if( _HL > 1 && _PCD < 0xfffc ) { \
if( op3==0x20 && op4==0xfb ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x2b] + \
cc[Z80_TABLE_op][0x7c] + \
cc[Z80_TABLE_op][0xb5] + \
cc[Z80_TABLE_op][0x20] + \
@@ -3591,6 +3596,7 @@ if( _HL > 1 && _PCD < 0xfffc ) { \
if( (ad1 + 256 * ad2) == (_PCD - 1) ) \
{ \
int cnt = \
cc[Z80_TABLE_op][0x2b] + \
cc[Z80_TABLE_op][0x7c] + \
cc[Z80_TABLE_op][0xb5] + \
cc[Z80_TABLE_op][0xc2] + \