Couple quick suggestions (I have not looked at this
board yet):
1) Are you able to Run UUT? I always try this to
make sure that my pod works in the board. That is just a safety
check.
2) Do you have a probe? With a probe you can
confirm that you've mapped the right address to the right chip. What you can do
is something (manual from the keypad) like:
SYNC ADDRESS
WRITE @ <suspected start
address>
LOOP
and then you can probe the 2114 at the chip enable
pin to ensure that the chip you is indeed getting selected. In your case, I
don't think it is.
Also 2114s (for one hi/lo 2114 pair), the test
range will be something like 0000 - 03FF.
----- Original Message -----
Sent: Wednesday, October 08, 2003 10:09
PM
Subject: [techtoolslist] Frogger testing
on Fluke 9010A
Hi guys !
I'm facing one problem that is driving me crazy !
I have one 9010A with Z80QT Pod, I'm testing one known good Frogger (Sega
Gremlin) board. So far so good ! But "the problem is" : I have one 2114
sockted at position 50, and does not matter if I remove this IC or
replace with a damage one, it passes on both short and long RAM Test... I also
did the Quick Test and nope.
I'm testing the following addresses:
8000h-87FFh Passes OK
A800h-ABFFh Passes OK
AC00h-AFFFh Passes OK
I think there is something wrong on addresses... but I don't know the
right ones... According to James's website the addresses are Okay, instead of
AC00h-AFFFh that is not listed on the website.
Some of you guys can help me on that please ?
Thank you very much !
Jos� Luiz Martins