CR 4 Board

Tho top left is the board label and righ is the BDM connector.

To use BDM, hardware watch dog must be disabled. One easy way is to lift the capacitor of C105.

Flash Two 1MB chips 28F080
DIP BOOT 512K $000000-$07FFFF
Firmware 2MB $400000-$5FFFFF
NVRAM 256KB $200000-$23FFFF
Note Lift one pin of C105
Pin 1 of BDM is on
right side.

Lasted Updated:December 31 2016

Vists since Jan 4,2009