IEC codes

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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