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Re: Apple II Interrupt card

Subject: Re: Apple II Interrupt card
From: Rob <rsteinmetz@mindspring.com>
Date: Wed, 19 Mar 2003 04:37:57 GMT
Newsgroups: comp.sys.apple2
Organization: Cox Communications
References: <3E77EF8D.1050502@noneofyourbusiness.com>
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.1) Gecko/20020826
Xref: archiver1.google.com comp.sys.apple2:28841

Exegete wrote:
> The GEOS/Berkeley Softworks supplied an "IRQ Manager" card for the
> Apple IIe that did not have a mouse card. I have two of these cards.
> They only have two chips on them:
>
> SN74LS161AN
>
> and
>
> SN74LS03N
>
> The first made by TI the second by Motorola. There are also three
> resisters.
>
> The card was to be put into slot 7, and it only had two fingers on
> the right side, and four on the left.
>
> GEOS had to have have this to run on a IIe.
>
> I hope this helps some.
>
> Roy
>

It certainly seems that this is a option for getting the timing

interrupts needed for a TCP/IP stack. Is there any documentation of thiscard? How it "manages interrupts"? This type of circuit could beincorporated into other boards as well.


--
Rob

"Never ascribe to malice that which can be adequately explained by
stupidity"

References:
- Apple II Interrupt card
  - From: Exegete <millers@noneofyourbusiness.com>

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