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Prepared the API to set the PIT constant.

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This commit is contained in:
OBattler
2024-03-23 06:15:34 +01:00
parent 01b026c76e
commit 2466da2161
5 changed files with 112 additions and 31 deletions
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28
src/sound/snd_pas16.c
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@@ -354,7 +354,6 @@ static void
pas16_out(uint16_t port, uint8_t val, void *priv)
{
pas16_t *pas16 = (pas16_t *) priv;
pit_t *pit = (pit_t *) pas16->pit;
pas16_log("pas16_out : port %04X val %02X %04X:%04X\n", port, val, CS, cpu_state.pc);
switch (port) {
case 0x388:
@@ -728,6 +727,28 @@ pas16_get_music_buffer(int32_t *buffer, int len, void *priv)
pas16->opl.reset_buffer(pas16->opl.priv);
}
static void
pas16_speed_changed(void *priv)
{
pas16_t *pas16 = (pas16_t *) priv;
/* TODO: In PAS16 mode:
pit_change_pas16_const(prescale);
pit_set_pit_const(pas16->pit, PAS16CONST);
*/
pit_set_pit_const(pas16->pit, PITCONST);
}
static void
pas16_reset(void *priv)
{
pas16_t *pas16 = (pas16_t *) priv;
/* TODO: Reset the entire PAS16 state here. */
pit_set_pit_const(pas16->pit, PITCONST);
}
static void *
pas16_init(UNUSED(const device_t *info))
{
@@ -743,6 +764,7 @@ pas16_init(UNUSED(const device_t *info))
sb_dsp_set_mpu(&pas16->dsp, pas16->mpu);
pas16->pit = device_add(&i8254_ext_io_device);
pit_set_pit_const(pas16->pit, PITCONST);
pas16->pit->dev_priv = pas16;
pas16->irq = 10;
pas16->dma = 3;
@@ -798,9 +820,9 @@ const device_t pas16_device = {
.local = 0,
.init = pas16_init,
.close = pas16_close,
.reset = NULL,
.reset = pas16_reset,
{ .available = NULL },
.speed_changed = NULL,
.speed_changed = pas16_speed_changed,
.force_redraw = NULL,
.config = pas16_config
};