Re: Commodore 610 & 8088 explanation theory

From: Mike Naberezny <>
Date: Fri, 13 Jan 2012 17:23:10 -0800
Message-ID: <>
Hi Michau,

On 4/9/11 6:37 AM, Micha³ Pleban wrote:
> After replacing U20 I got the correct MS-DOS startup banner, but then the
> computer hung again. So I think it's a step in good direction, but still
> something is missing.

An old issue of the TPUG newletter mentions using the 8088 coprocessor with 
the B128 (610).  It says:

> The long awaited B-128 lo-profile machine arrived, 8088 co-processor
> equipped. The addition of 10 K termination resistors on data lines to 5V
> and ground lines, respectively, eliminated the puzzling, unpredictable
> (VERY random) system crashes.

Here's the original:


Mike Naberezny (

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Received on 2012-01-14 02:00:08

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