///////////////////////////////////////////////////////////////////////////
//
// SDL_PCService() - Handles playing the next sample in a PC sound
//
///////////////////////////////////////////////////////////////////////////
static void
SDL_PCService(void)
{
id0_byte_t s;
id0_word_t t;
if (pcSound)
{
s = *pcSound++;
if (s != pcLastSample)
{
BE_ST_LockAudioRecursively();
// asm pushf
// asm cli
pcLastSample = s;
if (s) // We have a frequency!
{
t = pcSoundLookup[s];
BE_ST_PCSpeakerOn(t);
#if 0
asm mov bx,[t]
asm mov al,0xb6 // Write to channel 2 (speaker) timer
asm out 43h,al
asm mov al,bl
asm out 42h,al // Low byte
asm mov al,bh
asm out 42h,al // High byte
asm in al,0x61 // Turn the speaker & gate on
asm or al,3
asm out 0x61,al
#endif
}
else // Time for some silence
{
BE_ST_PCSpeakerOff();
#if 0
asm in al,0x61 // Turn the speaker & gate off
asm and al,0xfc // ~3
asm out 0x61,al
#endif
}
BE_ST_UnlockAudioRecursively();
// asm popf
}
void BE_ST_BSound(uint16_t frequency)
{
BE_ST_LockAudioRecursively();
BE_ST_PCSpeakerOn(PC_PIT_RATE/(uint32_t)frequency);
BE_ST_UnlockAudioRecursively();
}
