Hey guys,
So I'm about to have some trace repairs done on my original revision 0
Apple ][. I'm getting these repairs done profesionally as I don't trust
my skill.
At some stage in it's life some one has badly removed the 74LS257 (at
position A8) and has pulled of half the tracers below. I need to draw
up a guide for the repair shop, and I believe I have all the missing
traces tracked down except for one. Can anyone tell me where pin 11 on
74LS257 at A8 goes too?
My best guess is that there was once a trace line that goes from pin 11
that then dissapears under the keyboard socket and from there I have
know idea (possibly to the IC at A2???). I have tried to look at the
schematics in my copy of the RED book, but I'm no electronics wizz and
I can't see any indication of pin 11 being attached to anything.
For those wanting to help, I have made a little web page showing the
trace line in question:
http://homepage.mac.com/lord_philip/PhotoAlbum21.html
The red lines are the trace lines that I am fairly sure are correct.
The purple line is the one I am unsure of. Is this correct?
Thanks for everyones time.