diff options
Diffstat (limited to 'hw/misc')
| -rw-r--r-- | hw/misc/mac_via.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c index 993bac017d..7a53a8b4c0 100644 --- a/hw/misc/mac_via.c +++ b/hw/misc/mac_via.c @@ -130,6 +130,10 @@ * On SE/30, vertical sync interrupt enable. * 0=enabled. This vSync interrupt shows up * as a slot $E interrupt. + * On Quadra 800 this bit toggles A/UX mode which + * configures the glue logic to deliver some IRQs + * at different levels compared to a classic + * Mac. */ #define VIA1B_vADBS2 0x20 /* ADB state input bit 1 (unused on IIfx) */ #define VIA1B_vADBS1 0x10 /* ADB state input bit 0 (unused on IIfx) */ |