Peter's z80.eu site blog
Genoa Super EGA can't replace an original Siemens PCD-2 CGA+MDA card 
Friday, September 18, 2015, 06:30 PM
Posted by Administrator
Meanwhile I have tried to replace my original Siemens PCD-2 graphics adapter with a (more modern) Genoa Super EGA (Modell 4880). Unfortunately even with a documentation of all dip switches and jumper, it was not possible to replace the original card, which is able to display color graphics card (CGA) and monochrome display adapter (MDA) on a monochrome monitor.
I thought I can configure the Genoa Super EGA...

... to use a monochrome monitor.

BUT NO it does not work :-(

I guess the Siemens Graphics Adapter is a very special (and rare) display adapter which is only designed to work with the Siemens Monitor. Look at the card, it has three crystal oscillators (!), which is totally unusual for dispplay adapter of 1988:


Ok, if anybody has additional suggestions how to work with that original monochrome monitor and the above mentioned Genoa Super EGA, let me know it. Switches & Jumper can be found at the "related link" below.
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