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RE: More SuperChips stuff
- To: quattro <firstname.lastname@example.org>
- Subject: RE: More SuperChips stuff
- From: Dave Lawson <email@example.com>
- Date: Thu, 01 Sep 94 17:42:00 mdt
- Encoding: 29 TEXT
- Reply-To: quattro
- Sender: quattro-owner
More great info guys,
The 89 200 TQ computer I have opened up looked the same. The newer computer
uses a more integrated and smaller pressure sensor than the 83 TQC computer.
So the whole mod was to change the boost pressure signal which the computer
uses as input. So Ned may be the only guy who has actually sold an updated
PROM modification. Glen, so your TQC computer definately has a replacement
PROM set in a chip carrier?
>There are two boards connected by 3 ribbon cables soldered in. I find
>nothing I would identify as an EPROM. There is what I think is a PROM
This is the prom, from the Hitachi data book it is a 8192 word by 8 bit
PROM, i.e.64K PROM. It is a 28 pin DIP chip.
I think the processor in the computer was the HD6303XP chip, a HD6303 8-bit
CMOS microprocessing unit. This is the 40 pin DIP chip.
We never did unsolder the prom from this computer and download the code. We
just did some exploratory probing.
Dave Lawson firstname.lastname@example.org