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gfx chip faker, hint vector

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@20 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-01-14 22:40:03 +00:00
parent ab0607f7e4
commit d1df87866b
5 changed files with 217 additions and 10 deletions
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4
Pico/cd/Pico.c
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@ -32,6 +32,7 @@ int PicoResetMCD(int hard)
{
// clear everything except BIOS
memset(Pico_mcd->prg_ram, 0, sizeof(mcd_state) - sizeof(Pico_mcd->bios));
*(unsigned int *)(Pico_mcd->bios + 0x70) = 0xffffffff; // reset hint vector (simplest way to implement reg6)
PicoMCD |= 2; // s68k reset pending
Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode with m68k access after reset
counter75hz = 0;
@ -209,6 +210,9 @@ static int PicoFrameHintsMCD(void)
counter75hz -= counter75hz_lim;
Check_CD_Command();
}
if (Pico_mcd->rot_comp.Reg_58 & 0x8000)
gfx_cd_update();
}
// draw a frame just after vblank in alternative render mode