Question about chip IC 140, IC141
2008-11-05 by George
Hi guys, I'm still trying to figure out the boot problem. :( Are there any schematics available which tell you which chips go where on the digital board? I went through all my chips on the digital board today again and I believe I accidentally mixed up a couple of ICs. But thankfully I noticed before I powered the EII up. Could anyone kindly tell me which chips belong on IC140 and IC141? They are located on the first top row on the digital board (where chips 134/139/149/151 are missing. I think I accidentally misplaced them and now I can't figure out which ones go where. (Those missing ones are what threw me off) I have 2 chips which I believe belong on those spots. They are labeled SP 8428. But one says underneath DM74S174N, the other DM74s175N. Thanks in advance for your help. George