Wow, dude, that's *old.* (I'm just out of school, right? Nah, I'm old 
enough to remember being amazed at the "new" Apple ][. I eventually 
built a "+" model out of a PAL motherboard from Apple I modified for 
NTSC output. Boy oh boy, the speed of that 1 MHz 6502. Scorching! <g>) 

A Google search found a couple of suppliers that still carry the 
INS8154 (or claim to). Here's one, in California:
http://www.4starelectronics.com/catalog/parts/815/11.aspx

They'll probably gouge you on the price, of course. 

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
Of Joe Farr
Sent: Tuesday, October 19, 2004 8:26 AM
To: piclist@mit.edu
Subject: [EE] Looking for INS8154 datasheet


Hello,

I'm trying to renovate an old ACORN SYSTEM 1 computer (circa 1979)
that makes use of the now very obsolete INS8154 chip. I/O and 128bytes
of RAM from what I can figure out.

Does anybody have a datasheet kicking around for this part they could
let me have.
Theres nothing on the National web site and their reply to my Email
was of no help at all.

If I can get a data sheet, I'm hoping that I can program a PIC to act
accordingly... A nice project to keep me busy over winter.

Any help would be great.
Thanks,
Joe.
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