MK-83

The board SBC Italian MK-82 was the clone of the original Ferguson BigBoard I, which was designed to fulfill the function of all-purpose programmable computer. Subsequent releases of additional items of US holders of the original card in the journal Microcornucopia allowed the Italian cloner to make interesting and unique changes to get that in Italy it was called MK-83: a card extraction identical to the MK-82 that were been implemented or Z80B Z80A processor operating at clock frequencies of the system, respectively, 4 or 6 MHz, a floppy disk controller to enable the management of double-sided double-density drives both with 8 "5.25" with its connectors IDC 50pin and 34pin onboard, and the possibility of having a onboard memory of 256Kbyte (by 32 Ics type 4164).

Have existed at least 3 versions of the card MK83, in turn, created as a variation from the card MK82 copy of the original American Ferguson Bigboard 1 Below I differences:

MK83 ver. A (former CNR-PISA):

MK83 ver. B ("paid" by Fabio di Modena) .

MK83 ver. C (only wiring diagrams):

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