RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 15:27:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

mcd, improve polling detection

Browse source
This commit is contained in:
kub 2021-05-14 16:50:13 +02:00
parent ca1b77e601
commit fbebab6934
2 changed files with 18 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

16
pico/cd/mcd.c
View file

@ -281,7 +281,8 @@ void pcd_irq_s68k(int irq, int state)
{
if (state) {
SekInterruptS68k(irq);
SekSetStopS68k(0);
if (SekIsStoppedS68k())
SekSetStopS68k(0);
Pico_mcd->m.s68k_poll_a = 0;
} else
SekInterruptClearS68k(irq);
@ -342,21 +343,24 @@ void pcd_run_cpus_normal(int m68k_cycles)
#ifdef USE_POLL_DETECT
if (Pico_mcd->m.m68k_poll_cnt >= 16) {
int s68k_left;
// main CPU is polling, (wake and) run sub only
SekSetStopS68k(0);
pcd_sync_s68k(Pico.t.m68c_aim, 1);
if (SekIsStoppedS68k())
SekSetStopS68k(0);
s68k_left = pcd_sync_s68k(Pico.t.m68c_aim, 1);
Pico.t.m68c_cnt = Pico.t.m68c_aim;
if (s68k_left > 0)
Pico.t.m68c_cnt -= ((long long)s68k_left * mcd_s68k_cycle_mult >> 16);
if (SekIsStoppedS68k()) {
// slave has stopped, wake master to avoid lockups
Pico_mcd->m.m68k_poll_cnt = 0;
}
elprintf(EL_CDPOLL, "m68k poll [%02x] x%d @%06x",
Pico_mcd->m.m68k_poll_a, Pico_mcd->m.m68k_poll_cnt, SekPc);
}
} else
#endif
SekRunM68kOnce();
SekRunM68kOnce();
if (Pico_mcd->m.need_sync) {
Pico_mcd->m.need_sync = 0;
pcd_sync_s68k(Pico.t.m68c_cnt, 0);