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revaldinho / cpc_ram_expansion

A series of Amstrad CPC PCBs including a backplane, ROM and 512K and 1MByte RAM expansions.
GNU General Public License v3.0
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Pin1/2 silkscreen is on the wrong end of the connector #11

Closed SerErris closed 2 years ago

SerErris commented 2 years ago

Hi, I doublechecked now the design on the original here and it is the same as in my version I have (which is modified design by cpcstore.uk.co ...

The issue is .. if you looking on the board from top, the connector to CPC facing away from you, you can read the PIN numbering of the IDC connectors (1 and 2) on the left of the connector.

Actually Pin 1 and 2 are on the right side and the rows are exchanged.

Correct orientation would be as shown in the picture below. That is true for the edge connector version as well as for the V1.10 backplane image

revaldinho commented 2 years ago

The pin numbering shown on the silk screen for the box connectors is part of the library component data for that part. It does not correspond to the PIN numbers used on the edge connector of the CPC.

hanshuebner commented 2 years ago

I was also confused by this, thank you for confirming.