[Coco] 8k/16k bankable EPROM cartridge board

[Kip Koon]

Hi Guys!
I have finished v1 of the schematics for an Ultimate 1MByte Eprom Pak and an
Ultimate 512Kbyte Flash Pak.  The Eprom pak will hold 64 - 16KB ROM Images
and the flash pak will hold 32 - 16KB ROM Images.  
The 8-bit register currently sits at $FF40-$FF5F to keep the chip count
down.  This first version is primarily for those who want to put all their
rom paks and .bin files <16KB in size online with no drives of any kind.
These first PCBs will just fit into a game cartridge if I have done my
homework correctly.  
No menu system has been written yet so execute the following command line
then press reset to change banks.
POKE 113,0:POKE $FF40,BK
BK = the bank number from 0 to 63 for the Eprom Pak and 0 - 31 for the Flash
Pak.  
Would any electronic engineers like to double check my schematic?  Once
approved I will ask for testers for the first PCBs.  After the design is
fully functional, then production units will be made.  Any takers to help me
out with checking everything over?
As I can program DIPs already and need to figure out how program PLCC32
Flash chips, I will build the eprom version first once the schematic has
been approved.  I have seen PLCC32 to DIP32 adapters on ebay.  Does anybody
know if any of them will work on the Willem Eprom Programmer?   Take care my
friends.

Kip Koon
computerdoc at sc.rr.com
http://www.cocopedia.com/wiki/index.php/Kip_Koon
http://computerpcdoc.com/