--- Doc Shipley <doc_at_mdrconsult.com> wrote:
> But my original concern still stands. I'm not at all sure that the
> 6-pin DIN cable I got is correct. Do you have the pinout handy? Or a
> URL bookmarked? I admit I got tired of Google on about page 6 of hits.
AFAIK, it's pin-1 to pin-1, pin-2 to pin-2, etc. There's no
crossovers or anything odd like that. It's not based on any
sort of RS-232-like arrangement - there's one clock line, one
data line, and anyone on the chain can drive it. It's up to
the (software) protocol to help you figure out who should be
doing what, and when.
But the pinout is:
1 - /SRQ_IN - Service Request
2 - GND
3 - ATN - Attention
4 - CLOCK
5 - DATA
6 - /EXT RESET
(cf. schematics at
http://www.funet.fi/pub/cbm/schematics/computers/c64/250469-rev.A-left.gif)
The protocol flow is at:
http://www.funet.fi/pub/cbm/schematics/misc/iec-protocol.gif
Here's a pinout (and warnings) about the IEC driver chips
(7406/74LS14/MOS 8713)
http://www.student.informatik.tu-darmstadt.de/~mjk/nepa/chips/invdrv.html
-ethan
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Received on Thu Jul 18 2002 - 17:03:01 BST
