Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-30 17:41:47 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

added support for reading soundregs

Browse Source
This commit is contained in:
Michaël Banaan Ananas 2011-08-06 22:52:21 +00:00
parent 2d165ef98c
commit fd3155c00a
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/emu/sound/ymf278b.c
View File

@ -100,6 +100,7 @@ typedef struct
typedef struct
{
UINT8 pcmregs[256];
YMF278BSlot slots[24];
INT8 lsitest0;
INT8 lsitest1;
@ -476,6 +477,7 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data)
chip->timer_busy->adjust(attotime::from_hz(chip->clock / 88));
chip->stream->update();
chip->pcmregs[reg] = data;
// Handle slot registers specifically
if (reg >= 0x08 && reg <= 0xf7)
@ -671,6 +673,16 @@ READ8_DEVICE_HANDLER( ymf278b_r )
return chip->current_irq | (chip->irq_line == ASSERT_LINE ? 0x80 : 0x00);
}
// PCM/mixer
case 5:
{
UINT8 reg = chip->port_C;
if (reg == 2)
return (chip->pcmregs[reg] & 0x1f) | 0x20; // device ID in upper bits
return chip->pcmregs[reg];
}
default:
logerror("%s: unexpected read at offset %X from ymf278b\n", device->machine().describe_context(), offset);
break;
@ -733,6 +745,7 @@ static void ymf278b_register_save_state(device_t *device, YMF278BChip *chip)
{
int i;
device->save_item(NAME(chip->pcmregs));
device->save_item(NAME(chip->lsitest0));
device->save_item(NAME(chip->lsitest1));
device->save_item(NAME(chip->wavetblhdr));