Date   : Tue, 27 Apr 2004 16:30:45 +0100
From   : "Dom Wright" <domwright@...>
Subject: Re: 65c02

John Kortink Wrote:

>On Tue, 27 Apr 2004 15:31:42 +0100 (BST), gARetH baBB wrote:

>>Has anyone come across a reference before about using a 65c02 in an Issue
>>7 BBC ?
>>
>>I've used them in Issue 4s no problem, but this Issue 7 just starts up
>>claiming to have only 16K and Language?
>
>Doesn't seem to work here either, with the 65C02 from a
>second processor. It does boot but then starts spraying
>spurious errors.

I'm sure I used to run one in an Iss 7 with Basic 4, although it might
have been a 65c102.

I've just dug out an Issue 7 machine and put a 65c02 in it and it seems
to work fine.

>Must be some electronic incompatibility, most likely bus
>timing or interrupt related. Manufacturer might also be
>a factor in this context (this one is a GCE).

What do I look for on the board to check this?

Dom