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The Acorn System 5 is a disc-based computer mounted in a card cage. The card cage can hold 10 cards and 2 floppy disc drives.
Here is the Acorn System 5 Handbook . Note that pages 13 & 14 are missing from the section on the 6502 CPU card.
I acquired from Richard Stagg this System 5 in 2008. It is an ex-school Econet server. The computer has:
The Acorn System keyboard plugs into the 2MHZ 6502A card.
I don't have any software for the System 5.
Here are some pictures:
Acorn System 5 (front)
The 2 floppy discs are on the right and the cards on the left. From the left they are - 2MHz 6502A card with connector for keyboard, 80 x 25 VDU interface with BNC connector, 2 x 32K DRAM cards, Econet card and the fdc car is at the right connected to the disc drives.
Acorn System 5 with card removed.
This shows the card cage and the 10 slot backplane. The ribbon cable links the fdc and disc drives.
Acorn System 5 with disc drives removed
Acorn System 5 right side
Acorn System 5 (back)
Acorn System 5 (bottom)