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IMSAI PCS-80/30 with Persci 277 Drive

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  IMSAI PCS-80/30 with Persci 277 Drive by Bill Degnan - 02/05/2020 22:35
IMSAI PCS-80/30
This system came into Kenett Classic for repairs. The customer described how the disk does not boot. Click image for larger view.


IMSAI PCS-80/30
Here is a photo of the Persci 277 dual disk drive with the cover removed. Click image for larger view.


IMSAI PCS-80/30
The system came with a Processor Technologies Sol System Video Monitor, something I had not seen before. Click image for larger view.


Next - Determine if the ROM is configured for Tarbell disk controller, it looks like the ROM was recently replaced. Could be that the ROM's B command is not finding the drive through the controller. The voltages on the disk controller are on the surface ok.

A lot more to come.

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