Re: New video state ROMs?

From: <lisa_at_email.domain.hidden>
Date: Sat, 29 Sep 2007 20:30:04 -0500

It is an MMI 6309. It also cross references to a National 74S471, a TI 28L22 and a Signetics 82S135 plus a few others. I have successfully programmed the 74S471 ( or 74LS471 ) in the past. It is a 256 X 8 PROM.
This website shows the pinout and cross references for several PROM's. action=url&type=info&page=PromRef.txt


On Sep 29, 2007, at 3:20 PM, Blair Aakre wrote:

> I have an XL that I would like to convert back to a Lisa 2/10 and run
> the Office System. However, I have the 341-0348 video state ROM as
> well as the XL boot ROMs. I can program my own boot ROMs, but I don't
> know about the video state ROM. Does anyone know anything about this?
> Could I just get a blank part and copy over the contents from a
> 341-0229 (Lisa) video state ROM? Anyone know what the blank part is
> on the Lisa?
> Thanks,
> Blair
> >

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. Received on 2015-07-15 16:42:36

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