I have the Reference and Test Manual that is part of the TM225 course, it includes a schematic of the OpusComputer. The computer is a bit serial device that is implemented in two ROM chips and some shift registers, it is clocked at 1 Mhz. The clock is implemented with two transistors in a mulit-vibrator circuit so is not accurate enough to be used as a real time clock. I enjoyed writing simple programs for this somewhat limited device.
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I have the Reference and Test Manual that is part of the TM225 course, it includes a schematic of the OpusComputer. The computer is a bit serial device that is implemented in two ROM chips and some shift registers, it is clocked at 1 Mhz. The clock is implemented with two transistors in a mulit-vibrator circuit so is not accurate enough to be used as a real time clock. I enjoyed writing simple programs for this somewhat limited device.
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