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First used a PC in 1984, but it wasn't until later that I got myself a BBC Model B...
circa 1981: 6502 @1MHz, 32k RAM, 16k OS, 16k banked "sideways" ROM
Fully optioned it included onboard interfaces for a printer, floppy drive, hard drive, analog joystick, serial, network... and also a "tube" interface which you could connect a second processor box to. You could run CP/M on a Z80 second processor and I think there was also a 16 bit second processor option as well.
It was a very advanced machine for its day... I ended up with about 4 of them, the wife made me throw them all out a few years ago. Coulda sold them on ebay for a hundred or two.
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