Subject: Re: Suggested pmax disks?
To: Paul Evans <paule@shadowfax.martex.gen.oh.us>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
List: port-pmax
Date: 11/13/1997 05:59:19
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Paul Evans <paule@shadowfax.martex.gen.oh.us> writes:

>ps - does anyone know the wiring for a ISDN Maxine port to "do" sound? 
>(what exactly is it anyway?)
>
>thanks.

AFAIK it's an am7930; Same audio chip hardware as in old Sun4c boxes.

The ioasic has funky DMA support that has to be handled and integrated
into an front-end ioasic.  Handling the DMA pointer-reload interrupts
from the ioasic DMA means redoing the interrupt structure.  When that
is done, it should be much simpler to add front-ends for the MI scsi
*and* for the Maxine audio/ISDN *and* the Maxine floppy-disk
controller.