ncoplin_at_orbeng.com
Date: 2004-04-28 10:02:36
Hi Nick,
I have checked the various sources I have about the IEC bus, but your are
right in that none show the Tpr signal.
In 64HDD's code I don't have a Tpr, and it still seems to work...
- Nick
-----Original Message-----
From: owner-cbm-hackers@cling.gu.se
[mailto:owner-cbm-hackers@cling.gu.se]On Behalf Of njaxel@netscape.net
Sent: Monday, 26 April 2004 1:54 PM
To: cbm-hackers@cling.gu.se
Subject: Que: Tpr on serial bus diagram
Hi,
while experimenting with the serial bus and having a look at the C64
PRG and a serial bus doc that came along with VICE, I noticed Tpr,
mentioned in both texts but nowhere to be seen on the timing
diagrams. According to the tables in these docs, it stands for
BYTE-ACKNOWLEDGE, but I can't see it fitting anywhere. It's supposed
to be important if an external device is a talker (min 20us, typ
30us).
Any ideas what this Tpr is and where should it be on the C64 PRG diagram?
Thank you all in advance.
Best wishes,
Nick
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