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CPU Menu Erratic #14

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jasonsbeer opened this issue Feb 16, 2023 · 1 comment
Closed

CPU Menu Erratic #14

jasonsbeer opened this issue Feb 16, 2023 · 1 comment
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bug Something isn't working High Severity Prioritize Over Other Issues

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@jasonsbeer
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Description: CPU startup menu sometimes works as expected, sometimes starts into the 2630 monitor, and sometimes crashes.

Severity: High. The ability to change CPUs in software is a key feature with no current alternative methods.

Observations/Useful Info: This was not an issue in revision 2.2. There were small hardware and many CPLD logic changes between 2.2 and 3.0. Probably need to start with U601 logic.

Proposal: Find root cause and repair.
@jasonsbeer jasonsbeer added bug Something isn't working High Severity Prioritize Over Other Issues labels Feb 16, 2023
@jasonsbeer
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Fixed.

The AUTOCONFIG DSACK timings were causing issues with the ROM data. I don't exactly have an explanation as I did not hook up the logic analyzer. Call it a hunch. 8^>

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@jasonsbeer