[Techtoolslist] Kurz-Kasch ROM Test II

[John Robertson]

John Robertson wrote:

> Anyone have one of these? I am in need of either schematics or some 

> voltage measurements from the regulator PCB. Just 'won' this off eBay 

> and it really doesn't work (not surprising given the description).

>

> The device looked useful - my assumption was it would generate a 

> CheckSum of an Eprom inserted into the socket - it has four 

> seven-segment displays after all! It uses a Z80 that appears to be 

> wired up as a NOP, but it uses several voltages - perhaps -5 and +12 

> for the 2708s etc. I only have one socket - 2764-27128, if anyone has 

> any of the sockets I'd be interested in pictures to try to figure out 

> the pinout assuming no schematics or manual turns up that is!

>

> Thanks!

>

> John :-#)#

>

OK, the regulator board turns off the -12 and +12 unless the TEST button 
is pressed. I assume that is to protect the Eprom...

Still digging...

John :-#)#