Andreas Senk's M20 with APB8086 card

Andreas has sent a set of very nice pictures of one of his M20 system, equipped with an Alternate Processor Board 8086 which made the system MS-DOS compatible.

A nice view of the APB8086 card. The Intel 8086 processor is easily recognizable, as well as the EPROMs containing the alternative firmware.

At startup, the M20 asks the user wheter it should be using the Z8001 CPU or the alternative Intel 8086.

At first, a little problem with disk drives had to be fixed...

But at the end, Andreas could come to the classic MS-DOS prompt.

The system was equipped with a 128 KiB RAM expansion, made from an unknown supplier.

The machine came with a complete set of user manuals.

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