KY11 - ever debug one?
henk.gooijen at oce.com
Tue Apr 24 06:01:10 CDT 2007
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brad Parker
> Sent: dinsdag 24 april 2007 12:27
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: KY11 - ever debug one?
> "Gooijen, Henk" wrote:
> >FIY, the connector pinout is as follows on the console board
> (ASCII art):
> > __________________________________
> > |
> > | 19 17 15 13 11 9 7 5 3 1 <---- row of pins near
> edge of the board
> > | 20 18 16 14 12 10 8 6 4 2 <---- row of pins to the
> "center" of the bo
> > |
> > ^card edge
> The docs say pin 1 is on the left side of the console board
> and the left side of the KY11 (facing the chips). Or at
> least they say the "red stripe"
> should be on the left. (this is J1)
> can you confirm that's how you have it wired?
> ps: thanks very much for trying it with J2/J3 disconnected!
The ASCII pinout is *not* of the console board, but of the M7859!
I have the "scribbled" printset with me. You are correct on J1
on the console board, pin #1 is near the edge.
Typical (...), in my notes, I have just one comment near the 7442
(on KY-1), saying pin #2 (KY1 STOP L) gets never active ...
Is there some info written in the M7859 manual? In the end of that
manual is also a source code listing of the 8008 assembler code.
Useful, if you put the logic analyser on the databus, to see what
the cpu is executing. Perhaps that can explain why you get WAIT.
Is the 8008 executing the states you mentioned just once?
I don't know the 8008, but what if E16/E17 is defective. Is the
8008 putting out an address, reading data? Is that data correct?
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