[Techtoolslist] Kurz-Kasch ROM Test II

[John Robertson]

Pat Danis wrote:

> John:

>

> Pretty sure I have one of these and a photocopy of the manual as 

> well.  Let me dig around and see what I can find.  I don't have a 

> scanner......sad isn't it?.......so I will have to get a friend to 

> scan it for you.  I'll let you know.  May have some sockets as well.

>

> Pat


Well, it now appears to work. Had a couple of bad 244s that I tracked 
down by assuming someone plugged the sub-boards in backwards and so I 
simply did a diode check on the small PCB edge connectors relative to 
common. After replacing the two TTL ICs the device now produces what 
appears to be a Signature for ROMs inserted in the socket - not a 
Checksum (rats!).

And it is not the Fluke FIDE Signature, so now I have to track down a 
file to HP style signature converter to see if the device actually works 
as intended, my eprom programmer does not generate a Signature for ROM...

Thanks for the offer of a copy of the manual - I will add it, of course, 
to TTL FTP once it appears.

I suspect this tool is going to sit on the shelf a lot...

John :-#)#

>

> On 1/5/2011 7:41 PM, John Robertson wrote:

>> 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 :-#)#

>>

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>

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