View allAll Photos Tagged CPU
In case you were wondering, those Xeons are really, really huge. Like big enough to break your foot if you drop one on it, seriously. So big I wasn't able to put the system into another casemod I wanted to do. Darn it.
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.