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Workaround for bad AWE32 ROM dumps created by AWE-DUMP - Win95 AWE32 drivers now work with these dumps.

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EMU8000 now updates CVCF/VTFT with current/target volume - Win95 AWE32 drivers now no longer cut off notes early.
Set SB DSP version for AWE32 to v4.13.
This commit is contained in:
TomW 2013-11-10 16:40:52 +00:00
commit 2c1e691c1a
3 changed files with 17 additions and 2 deletions
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15
src/sound_emu8k.c
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@ -554,6 +554,7 @@ void emu8k_poll(void *p)
{
case ENV_ATTACK:
emu8k->voice[c].env_vol += emu8k->voice[c].env_attack;
emu8k->voice[c].vtft |= 0xffff0000;
if (emu8k->voice[c].env_vol >= (1 << 21))
{
emu8k->voice[c].env_vol = 1 << 21;
@ -563,6 +564,7 @@ void emu8k_poll(void *p)
case ENV_DECAY:
emu8k->voice[c].env_vol -= emu8k->voice[c].env_decay;
emu8k->voice[c].vtft = (emu8k->voice[c].vtft & ~0xffff0000) | ((emu8k->voice[c].env_sustain >> 5) << 16);
if (emu8k->voice[c].env_vol <= emu8k->voice[c].env_sustain)
{
emu8k->voice[c].env_vol = emu8k->voice[c].env_sustain;
@ -572,6 +574,7 @@ void emu8k_poll(void *p)
case ENV_RELEASE:
emu8k->voice[c].env_vol -= emu8k->voice[c].env_release;
emu8k->voice[c].vtft &= ~0xffff0000;
if (emu8k->voice[c].env_vol <= 0)
{
emu8k->voice[c].env_vol = 0;
@ -580,6 +583,11 @@ void emu8k_poll(void *p)
break;
}
if (emu8k->voice[c].env_vol >= (1 << 21))
emu8k->voice[c].cvcf &= ~0xffff0000;
else
emu8k->voice[c].cvcf = (emu8k->voice[c].cvcf & ~0xffff0000) | ((emu8k->voice[c].env_vol >> 5) << 16);
switch (emu8k->voice[c].menv_state)
{
case ENV_ATTACK:
@ -649,6 +657,13 @@ void emu8k_init(emu8k_t *emu8k)
fread(emu8k->rom, 1024 * 1024, 1, f);
fclose(f);
/*AWE-DUMP creates ROM images offset by 2 bytes, so if we detect this
then correct it*/
if (emu8k->rom[3] == 0x314d && emu8k->rom[4] == 0x474d)
{
memcpy(&emu8k->rom[0], &emu8k->rom[1], (1024 * 1024) - 2);
emu8k->rom[0x7ffff] = 0;
}
io_sethandler(0x0620, 0x0004, emu8k_inb, emu8k_inw, NULL, emu8k_outb, emu8k_outw, NULL, emu8k);
io_sethandler(0x0a20, 0x0004, emu8k_inb, emu8k_inw, NULL, emu8k_outb, emu8k_outw, NULL, emu8k);
io_sethandler(0x0e20, 0x0004, emu8k_inb, emu8k_inw, NULL, emu8k_outb, emu8k_outw, NULL, emu8k);