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32x: some timing hacks..

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This commit is contained in:
notaz 2013-08-11 23:49:01 +03:00
parent 61801d5bc8
commit 8a847c12e6
2 changed files with 18 additions and 2 deletions
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18
pico/32x/memory.c
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@ -32,7 +32,7 @@
* sys reg 0004000-00040ff 1 1
* vdp reg 0004100-00041ff 5 5
* vdp pal 0004200-00043ff 5 5
* rom 2000000-23fffff 6-15
* cart 2000000-23fffff 6-15
* dram/fb 4000000-401ffff 5-12 1-3
* fb ovr 4020000-403ffff
* sdram 6000000-603ffff 12 2 (cycles)
@ -1063,6 +1063,8 @@ static u32 sh2_read8_cs0(u32 a, SH2 *sh2)
{
u32 d = 0;
sh2_burn_cycles(sh2, 1*2);
// 0x3ff00 is veridied
if ((a & 0x3ff00) == 0x4000) {
d = p32x_sh2reg_read16(a, sh2);
@ -1116,6 +1118,8 @@ static u32 sh2_read16_cs0(u32 a, SH2 *sh2)
{
u32 d = 0;
sh2_burn_cycles(sh2, 1*2);
if ((a & 0x3ff00) == 0x4000) {
d = p32x_sh2reg_read16(a, sh2);
if (!(EL_LOGMASK & EL_PWM) && (a & 0x30) == 0x30) // hide PWM
@ -1206,6 +1210,15 @@ static void REGPARM(3) sh2_write8_sdram(u32 a, u32 d, SH2 *sh2)
Pico32xMem->sdram[a1 ^ 1] = d;
}
static void REGPARM(3) sh2_write8_sdram_wt(u32 a, u32 d, SH2 *sh2)
{
// xmen sync hack..
if (a < 0x26000200)
sh2_end_run(sh2, 32);
sh2_write8_sdram(a, d, sh2);
}
static void REGPARM(3) sh2_write8_da(u32 a, u32 d, SH2 *sh2)
{
u32 a1 = a & 0xfff;
@ -1609,7 +1622,8 @@ void PicoMemSetup32x(void)
// CS3 - SDRAM
sh2_read8_map[0x06/2].addr = sh2_read8_map[0x26/2].addr =
sh2_read16_map[0x06/2].addr = sh2_read16_map[0x26/2].addr = MAP_MEMORY(Pico32xMem->sdram);
sh2_write8_map[0x06/2] = sh2_write8_map[0x26/2] = sh2_write8_sdram;
sh2_write8_map[0x06/2] = sh2_write8_sdram;
sh2_write8_map[0x26/2] = sh2_write8_sdram_wt;
sh2_write16_map[0x06/2] = sh2_write16_map[0x26/2] = sh2_write16_sdram;
sh2_read8_map[0x06/2].mask = sh2_read8_map[0x26/2].mask =
sh2_read16_map[0x06/2].mask = sh2_read16_map[0x26/2].mask = 0x03ffff;