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q800: add Apple Sound Chip (ASC) audio to machine

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The Quadra 800 has the enhanced ASC (EASC) audio chip which supports both the
legacy IRQ routing through VIA2 and also "A/UX" mode routing direct to the
CPU.

Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231004083806.757242-10-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mark Cave-Ayland 2023-10-04 09:37:55 +01:00 • committed by Laurent Vivier
parent 5243e5543e
commit 9983f6e12e
4 changed files with 36 additions and 2 deletions
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11
hw/m68k/q800-glue.c
View file

@ -97,6 +97,11 @@ static void GLUE_set_irq(void *opaque, int irq, int level)
irq = 6;
break;
case GLUE_IRQ_IN_ASC:
/* Route to VIA2 instead, negative edge-triggered */
qemu_set_irq(s->irqs[GLUE_IRQ_ASC], !level);
return;
default:
g_assert_not_reached();
}
@ -123,6 +128,10 @@ static void GLUE_set_irq(void *opaque, int irq, int level)
irq = 6;
break;
case GLUE_IRQ_IN_ASC:
irq = 4;
break;
default:
g_assert_not_reached();
}
@ -214,7 +223,7 @@ static void glue_init(Object *obj)
qdev_init_gpio_in(dev, GLUE_set_irq, 8);
qdev_init_gpio_in_named(dev, glue_auxmode_set_irq, "auxmode", 1);
qdev_init_gpio_out(dev, s->irqs, 1);
qdev_init_gpio_out(dev, s->irqs, 2);
/* NMI release timer */
s->nmi_release = timer_new_ms(QEMU_CLOCK_VIRTUAL, glue_nmi_release, s);