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set cpu to be all it can be right from boot.

The main PCB of the unit. It contains a Z80A CPU, Z80A-PIO (for the parallel interface), Z80A-DART (channel A for the RS232 interface, Channel B is switched between the current loop interface, cassette interface and internal strip printer), Z80A-CTC (baud rate clocks for the DART), 34K RAM, 30K ROM, the printer control microcontroller and glue logic.

Xigmatek sd964 CPU cooler

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