May 262019
 

The Sony CXK5808 is a 1k x 8-bit RAM of which we know very little about, no datasheet from manufacturer is available, we can only find its pinout on schematics of arcade PCBs.It’s a 400mil DIP22 IC:

Therefore time ago I designed a simple adapter in order to use a common 6116 (or other 300mil DIP24 2k x 8-bit RAM device) in place of this obscure and hard to find part  :

Here’s testing of the adapter on my Gun.Smoke PCB:

 Posted by at 6:56 pm