Author: FatRakoon (79-121-141-25.xln.managedbroadband.co.uk)
Date: 12-20-2008 04:56
>>You just connected the 7404 w.o. knowing where the wires should go? Are you nuts?
No, I connected the wires EXACTLY how Rodolphe Czuba Explained to me... I did put that in the previous post.
It still did not work.
>>"When applying the 7404 IC, I did not remove the resistors. "
>>OK, this is wrong. You've merged the original clock with the signal from the 74 circuit. That won't work.
Yes, I accept that.
But, the original patch was a bloody awful mess and while I have done my best to clean this mess up and restore the board to original, I do not know what I need to do, to put a new 7404 or 7408 IC back and restore a patch to it.
Hence these posts.
So, please, rather than tell me what I already know and that the patch I tried to do is wrong, can you please let me know of a way that I can use a 7408 or a 7404 to patch it properly?
PLEASE!
FWIW: I have found this in my Archives...
This is, I assume what the 7408 is supposed to be and therefore it should be correct?
This is clearly NOTHING like I was told that the 7404 should be?
http://www.fatrakoon.co.uk/atari/images/scsiclock.jpg
In the diagram, Pins 12+13 are shorted as are 10+9
While there are 4 wires coming from it, as well as the 2 pins that are connected to the GAL that it sits on top, onmy 7404 pin 1 is one of these wires while in the diagram, pin 8 is present?
So, I know that I have done what I have been told to do, but maybe I have been confused by my memory of this diagram, plus also knowing what the original mess was previously, but I have followed Rodolphe's instructions to the letter, and I have made no mistakes, I have run through them over and over again double checking and checking a third time and more and I have done it exactly as he says, but I only get the video signal error at best.
So, is the diagram correct, and if so, does it make any difference as to what type of 7408 I use?
Please help me, dont just knock me if I get anything wrong like last time, thats not productive at all.
I have backed off my Falcon for a few months now to make a fresh approach at it and I need help to make it work right.
Thank you.
|
