From: Jim Brain (brain_at_jbrain.com)
Date: 2004-05-22 03:05:07
ncoplin@orbeng.com wrote:
>Hi Jim,
>
>Sent some reference material to you as an attachment in a private email.
>Normal protocol is as per the basic example, but keep in mind that some
>programmers do strange things such as sent multiple LISTENs and UNLISTENs
>etc The EF is close channel 0x0F, the opposite of FF which is open channel
>0x0F
>
>- Nick
>
>
>
Thanks for the information. It helps quite a bit.
However, my question about TALK ATN Turnaround does not seem to be
addressed in the document, and I have some questions about pedantic use:
When I receive a 3F (and possibly 5f) as a command, should I ignore CLK
until ATN goes high?
I am assuming that all devices will read any any bytes sent under ATN.
Is this true?
Your document talks about devices 4 to 30 (04 to 1e). I thought the bus
could handle device 31. No?
--
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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