John Robertson wrote:
Random ramblings...
Has anyone created a test for these CMOS RAMs? I am not very good at programming and it would be useful to have this. ...
Gotta love hardware solutions...I found an old 22-pin glomper clip, soldered a 22 pin IC socket to one side (12 - 22) and jumper wired the other - except for the Data pins #9, 10, & 11. Next put a second socket with legs 12 - 16 bent out (checked that they wouldn't short to the 1st socket). A four wire ribbon cable is now soldered to these pins (jumpered pairs together) and the other end of the ribbon cable goes to a 24 pin socket -with the wires tip soldered to the edges of the socket solder tabs D4 - D7 pins (14 - 17). Now the glomper fits onto the 5101 under test, and the 24 pin socket plugs into, well, a 24 pin socket withinthe 10 inch reach of the ribbon cable. Voila! A handy, dandy way to test 5101s without unsoldering the suckers(assuming the CPU is socketed) as the 9010A can now be used with the short or long RAM test... I'm going to put a ZIF socket on my glomperIC socket stack so I can test my 5101 inventory - a number of them appear to be not too healthy and the long RAM test is quite extensive... Another reason that every game repair shop needs a 9010 and assorted pods... John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out" _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/