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Click for a bigger picture, good old Wyse 50 Click for a bigger picture, alarm system board, commercial 8031 protoboard with about half homebrew components (ROM/RAM/IO) Click for a bigger picture,schematic of the alarm board driving the wyse 50 display Click for a bigger picture, this is what happens when a capacitor which claims to be bipolar isn't. Click for a bigger picture,fixing the wyse 50
Click for raw source code for alarm, be aware Compiled C code is translated to 8031 code.
Click for a bigger picture, one of the alarm's keypads kindof working. Click for a bigger picture, the back end of the keypad. Click for a bigger picture,schematic of the keypad.
Click for raw keypad code for alarm, be aware Compiled C code is translated to 8031 code.