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| Authored by: Ian Al on Thursday, January 03 2013 @ 09:11 AM EST |
Buoyed up with enthusiasm from using the GPIO of the Raspberry Pi, I have been
picking up old projects with the intention of interfacing them with the Pi. My
first success was to drive the pins on an FTDI I/O module from the Pi.
I discovered five incomplete computer boards which I remembered from many years
ago. They were incomplete because they were single-sided, undrilled boards and I
had only got around to drilling one before I discovered 8MBit/s PICs. There are
about 25 wire links on each board.
I found the board layout diagram and realised I had most of the components
including five 6502 processors. however, the 6502s require a 1Mhz crystal and I
haven't got anything that goes that slow!
I have one or two 2716 16K EPROMs and several 2114 static RAM chips so each
computer can have 16k of ROM and a whole 1kB of RAM. I have got 6522s so 2 x
8bit ports will be available. My programmer only burns 2732 EPROMs and above, so
I am going to have to program up the Raspberry Pi in Python to drive my old
kit-based programmer via its serial port. Fortunately, my other ARM development
board has all the circuitry for RS232 and I have spare chips. I might cheat with
a USB to Serial converter.
Perhaps I will complete just the one 6502 computer.
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Regards
Ian Al
Software Patents: It's the disclosed functions in the patent, stupid![ Reply to This | Parent | # ]
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