| EPROM Programmer |
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Not much to say about this one. I needed an EPROM programmer, but was
too cheap to buy one. I believe this was the first
D-Bus device, since the EPROMs for all subsequent projects were burned
on it.
My stock of surplus parts drove the design on this one. I had a whole bunch of 2764 EPROMs around, therefore all my other projects used 2764s, therefore, this programmer can only burn 2764s. At some point, I needed to read some 2716s, so I added the read-only 24-pin socket.
The hex displays are nice. They have internal decoder/drivers so all you
have to do is tie them to the data/address lines. So if I'm burning some
little 200 byte program, I can watch the data and abort the burn when I
see the end of it, rather than waiting for the whole 8K to finish. Plus
they just give you that nice warm feeling (figuratively and literally; they
run pretty warm!) of actually seeing your data as it is being written into
the device.
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