Re: Recode to Play MP3?

[georg.bieling@gmail.com]

On May 24, 1:06 pm, mdj <mdj....@gmail.com> wrote:
> On May 24, 8:29 pm, georg.biel...@gmail.com wrote:
>
> > > DMA on the Apple II is a dicy business.
>
> > But, if the other DMA card is properly placed in the DMA daisy-chain,
> > won't it work with the Transwarp ?
>
> The Transwarp uses DMA to take control of the system, so no other DMA
> peripheral can operate while it's turned on.
>
> Matt

I see. You mean that as the transwarp never ever releases the /DMA
line, no other can/will ever even attempt to request a DMA, right ?

After reading in Jim Sather's UTA2 p4-14, 4-15, the way I understand
it, I think there could be a problem with the priority scheme because,
two cards in adjacent slots, seeing their /DMA_INs negated, could
attempt to assert /DMA at the same time (in the same cycle),... or
not ?

--Jorge.