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core z80, more timing fixes

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This commit is contained in:
kub 2024-03-03 22:55:35 +01:00
parent 1d78204a90
commit c066c40ba9
2 changed files with 6 additions and 6 deletions
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4
pico/z80if.c
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@ -112,12 +112,13 @@ void z80_reset(void)
drZ80.Z80IF = 0;
drZ80.z80irqvector = 0xff0000; // RST 38h
drZ80.Z80PC_BASE = drZ80.Z80PC = z80_read_map[0] << 1;
// others not changed, undefined on cold boot
// other registers not changed, undefined on cold boot
#ifdef FAST_Z80SP
// drZ80 is locked in single bank
drz80_sp_base = (PicoIn.AHW & PAHW_SMS) ? 0xc000 : 0x0000;
drZ80.Z80SP_BASE = z80_read_map[drz80_sp_base >> Z80_MEM_SHIFT] << 1;
#endif
drZ80.Z80SP = drZ80.Z80SP_BASE + 0xffff;
drZ80.z80_irq_callback = NULL; // use auto-clear
if (PicoIn.AHW & PAHW_SMS) {
drZ80.Z80SP = drZ80.Z80SP_BASE + 0xdff0; // simulate BIOS
@ -128,6 +129,7 @@ void z80_reset(void)
#endif
#ifdef _USE_CZ80
Cz80_Reset(&CZ80);
Cz80_Set_Reg(&CZ80, CZ80_SP, 0xffff);
if (PicoIn.AHW & PAHW_SMS)
Cz80_Set_Reg(&CZ80, CZ80_SP, 0xdff0);
#endif