2764 EPROM Version Anyone?

A project log for SBC-85 8085 Single Board Computer

The SBC-85 is an open source 8085 based, expandable system with single board processor, backplane, and a growing number of support cards.

CraigCraig 03/28/2020 at 03:102 Comments

I have half a dozen things already in the queue, but in my next PCB run I am thinking of adding a single 2764 EPROM version of the SBC-85 SBC.   This would avoid the 21V 2732A EPROMs while not changing the overall memory space of the SBC-85.  

Any thoughts or suggestions?


Craig wrote 03/28/2020 at 03:47 point

good suggestion.  Thanks

  Are you sure? yes | no

Ken Yap wrote 03/28/2020 at 03:39 point

If you wire up pins 26 and 27 to GND and VCC respectively, the slot can also accommodate 27128 and 27256 chips for those who already have them. The image would be put in the first half and the third quarter respectively of those EPROMs.

  Are you sure? yes | no