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BTW, the BIOS had a few quirks and didn't match the print out that came with the documentation. As supplied the handshake failed for anything above 9600. It was a simple matter of changing the handshake overflow test code to test all pins of handshake serial lines. The format used on the 8" floppy disks was always single density for the first track and then could be either single to double density for the remaining tracks. This made swapping with other computers only possible if you formatted and stored data in single density.
Many if not all of these Delta Products 64K memory
boards also had a common of having the tantalum capacitor for the minus
power voltage installed with the + & - leads reversed and so marked on the
This page was last modified on 10/31/2014