Category Archives: Z-100

Repairing an 8″ Floppy Drive

When I first powered up the Z-100 for testing, everything worked except one of the 8″ disk drives, a Tandon TM848-1E.  The drive light would make three short flashes, then one long flash and was not detected by the OS … Continue reading

Posted in Z-100 | Comments Off on Repairing an 8″ Floppy Drive

Z-100 Manuals Scanned and Uploaded

I’ve finished scanning a batch of the Heath-Zenith technical manuals in my collection, many of which were not previously available online. I’ve also added manuals from other online sources that relate to the Z-100.  What follows is a fairly complete set of … Continue reading

Posted in Z-100 | Comments Off on Z-100 Manuals Scanned and Uploaded

Z-100 Acquired!

The Heath-Zenith H/Z-100 PC is a marvel of early 80s computer engineering. First release in September 1982, it contained both an 8085 CPU for CP/M work and an 8088 for IBM compatibility.  I acquired this system from Bill Adney who wrote … Continue reading

Posted in Z-100 | Comments Off on Z-100 Acquired!