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**Reel Slots** Gaming Machines => Universal Reel/Video Games => Topic started by: Nepa Coin Op on December 26, 2016, 08:19:49 PM

Title: Universal 8116 board - possible corrupt RAM?
Post by: Nepa Coin Op on December 26, 2016, 08:19:49 PM
I'm working on an 8116 board here and I believe I have corrupt Roms .... I repaired the acid damage and coy resets fine and I get a tone on power up but no display ...I have some address lines stuck but I checked them for continuity and they are fine


My z80 pins show as follows on the logic probe
 L = low
H = high
T= toggling


1. L
2 T
3 L
4 L
5 T
6 ok
7/8 H
9/10 T
12/13 T
14 L
15 T
16 L
17/18H
19 T
20 H
21 T
22-26 H
27/40T
Rom # is 8933-004
Reel rom 8934a-51


If anyone has any input id appreciate it
Thanks
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