Re: Strange PET 4032 RAM

From: Dave Mercado <>
Date: Tue, 17 Aug 2010 10:07:25 -0700
Message-ID: <57D11BF7522948FD9C65AFADF7A035C6@MERCADO>
This implies that one of the 16Kx1 RAM chips in low memory is bad. The
power-on memory test quits testing when it finds a bad location. I'm 
guessing the routine that
calculates free memory by subtracting 0401H (start of test) from the present 
bad address and
converts to decimal is probably also using bad RAM locations on zero page.

The price seems high for a computer with a problem.

----- Original Message ----- 
From: "Bill Degnan" <>
To: <>
Sent: Tuesday, August 17, 2010 9:13 AM
Subject: Strange PET 4032 RAM

> Strange PET 4032 RAM
> It looks like this computer, on Ebay, is reporting 21.3230456 bytes free.

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Received on 2010-08-17 18:00:04

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