From: Jim Brain (brain_at_jbrain.com)
Date: 2004-05-21 07:21:28
Two questions:
Does anyone have additional information on the TALK ATN turnaround part
of the IEC protocol? The PRG doesn;t really explain it to me (it looks
like it must occur after a cmd byte, but is it always TALK? Can it be
TKSA?)
As for codes, I see
x24 to x32 is LISTEN
x44 to x52 is TALK
x5F is UNTALK
x3F is UNLISTEN
xFX is SECOND (LISTEN)
Not sure what TKSA is (04 - 12?) Anyone know?
When I do open15,8,15,"i":close 15
I get:
c28 cFF d49 c3F c28 cEF c3F
I understand the TALK 8, SECOND 15 'I', and the followup TALK 8, but
what is EF? The 3F I get, but does EF mean END or something?
Jim
--
Jim Brain, Brain Innovations
brain@jbrain.com http://www.jbrain.com
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
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