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mcd, optimizations for polling detection

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This commit is contained in:
kub 2021-05-17 23:13:27 +02:00
parent 5402223466
commit efaa5e0b04
2 changed files with 5 additions and 3 deletions
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2
pico/cd/mcd.c
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@ -342,7 +342,7 @@ void pcd_run_cpus_normal(int m68k_cycles)
Pico_mcd->m.m68k_poll_cnt = 0; Pico_mcd->m.m68k_poll_cnt = 0;
#ifdef USE_POLL_DETECT #ifdef USE_POLL_DETECT
if (Pico_mcd->m.m68k_poll_cnt >= 32) { if (Pico_mcd->m.m68k_poll_cnt >= 16) {
int s68k_left; int s68k_left;
// main CPU is polling, (wake and) run sub only // main CPU is polling, (wake and) run sub only
if (SekIsStoppedS68k()) if (SekIsStoppedS68k())

6
pico/cd/memory.c
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@ -63,7 +63,7 @@ static void remap_prg_window(u32 r1, u32 r3);
static void remap_word_ram(u32 r3); static void remap_word_ram(u32 r3);
// poller detection // poller detection
#define POLL_LIMIT 32 #define POLL_LIMIT 16
#define POLL_CYCLES 64 #define POLL_CYCLES 64
void m68k_comm_check(u32 a) void m68k_comm_check(u32 a)
@ -78,13 +78,15 @@ void m68k_comm_check(u32 a)
Pico_mcd->m.need_sync = 1; Pico_mcd->m.need_sync = 1;
} }
Pico_mcd->m.m68k_poll_clk = cycles; Pico_mcd->m.m68k_poll_clk = cycles;
if (SekNotPolling || a != Pico_mcd->m.m68k_poll_a || clkdiff > POLL_CYCLES) { if (SekNotPolling || a != Pico_mcd->m.m68k_poll_a || clkdiff > POLL_CYCLES || clkdiff <= 16) {
Pico_mcd->m.m68k_poll_a = a; Pico_mcd->m.m68k_poll_a = a;
Pico_mcd->m.m68k_poll_cnt = 0; Pico_mcd->m.m68k_poll_cnt = 0;
SekNotPolling = 0; SekNotPolling = 0;
return; return;
} }
Pico_mcd->m.m68k_poll_cnt++; Pico_mcd->m.m68k_poll_cnt++;
if(Pico_mcd->m.m68k_poll_cnt == POLL_LIMIT)
SekEndRun(0);
} }
#ifndef _ASM_CD_MEMORY_C #ifndef _ASM_CD_MEMORY_C