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CMI8x38: Fix SB interrupts in VxD DOS box

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This commit is contained in:
RichardG867
2022-03-07 16:36:13 -03:00
parent 00d4cb5141
commit 9f40c213a6
1 changed files with 8 additions and 3 deletions
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11
src/sound/snd_cmi8x38.c
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@@ -75,7 +75,7 @@ typedef struct _cmi8x38_ {
uint32_t type;
uint16_t io_base, sb_base, opl_base, mpu_base;
uint8_t pci_regs[256], io_regs[256];
int slot, sb_irq;
int slot;
sb_t *sb;
void *gameport, *io_traps[TRAP_MAX];
@@ -119,7 +119,7 @@ static void
cmi8x38_update_irqs(cmi8x38_t *dev)
{
/* Calculate and use the INTR flag. */
if ((*((uint32_t *) &dev->io_regs[0x10]) & 0x0401c003) || dev->sb_irq) {
if (*((uint32_t *) &dev->io_regs[0x10]) & 0x0401c003) {
dev->io_regs[0x13] |= 0x80;
pci_set_irq(dev->slot, PCI_INTA);
cmi8x38_log("CMI8x38: Raising IRQ\n");
@@ -154,7 +154,12 @@ static void
cmi8x38_sb_irq_update(void *priv, int set)
{
cmi8x38_t *dev = (cmi8x38_t *) priv;
dev->sb_irq = set;
/* Interrupt flag shared with the first DMA channel. Combining SB and
PCI DMA is undefined; the VxD driver disables SB if PCI is in use. */
if (set)
dev->io_regs[0x10] |= 0x01;
else
dev->io_regs[0x10] &= ~0x01;
cmi8x38_update_irqs(dev);
}