68kMLA Classic Interface
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| Click here to select a new forum. | | Testing chips in circuit with an Oscilloscope | Posted by: smrieck511 on 2026-04-13 08:10:25
(for idiots perhaps...). I've got a Simasimac reloaded SE/30 board and I suspect the GLU chip is at fault. It cleaned up well but was kinda rough when I got it off the bombed board.
I have checked all pin continuity several times and everything checks out to destinations. No bridges also. Assuming that side of things is good, what would you specifically be looking for with the Oscilloscope to see if the GLU was alive and functioning correctly?
Walking the ROM bus? How is this done? Are there other aspects of the GLU that can be checked? Sorry I'm new to this side of things.
Thank you very much for any help! | | 1 |
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