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As part of any build or debugging you often have to probe certain signals either with the multimeter or oscilloscope. Having to remember the pin position of signals can become a bit of an annoyance. So this simple PCB just labels the pins to make life a bit easier.

The pins have all been traced and checked back to the pins on an Amstrad CPC 6128.

Note there is no ESD protection and the headers connect directly to the expansion bus, so care should be taken at all times to prevent accidents.

Digi-key parts list can be found at Digi-key List

PCB connected to an Amstrad CPC expansion board.

Trace of CLK and MREQ on Amstrad CPC 6128.