1 Jul
2009
1 Jul
'09
1:05 p.m.
--- On Wed, 7/1/09, ics65 at sbcglobal.net <ics65 at sbcglobal.net> wrote:
I only have experience with the Nova
4 Jr. CPU and Nova 3, both without the Battery Backup,
Memory Management or Multiple/Divide options. The Nova 4 Jr.
CPU had 64k byte of memory in the front left corner of the
CPU pcb. It does have the virtual terminal that connects to
an external terminal. This replaced the paddle switch
functions of the Nova 3.
George, thanks. If the Nova 4 Jr. CPU is marked 'DCG JR. CPU' in the front
right-hand corner (and it's a pretty good bet), then that's probably what I have
and I'll confirm by looking for those memory chips.
Am I right in thinking that the console terminal connection is made through pins on the
backplane as there is apparently no socket on the board for this purpose ?
Regards,
-Dave?
1 Jul
1 Jul
1:17 p.m.
On Jul 1, 2009, at 1:05 PM, david_comley at yahoo.com wrote:
Am I right in thinking that the console terminal
connection is made
through pins on the backplane as there is apparently no socket on
the board for this purpose ?
Yep, just like all Novas. There should be a bulkhead connection on
the back of the machine (or to the left of the backplane, looking at
the backplane from the pin side) that is wire-wrapped to the
appropriate pins on the backplane in order to bring out the signals.
--
Chris Kennedy
chris at mainecoon.com AF6AP
http://www.mainecoon.com PGP KeyID 108DAB97
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
"Mr. McKittrick, after careful consideration..."
2 Jul
2 Jul
10:16 a.m.
The console terminal connection maybe labeled directly on the backplane (a
row of ~10 pins), only 3 pins for the RS232 are needed. I guess you don't
have the info. to the pin outs?
Dave, what part of the world are you located in?
,George
----- Original Message -----
From: <david_comley at yahoo.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Wednesday, July 01, 2009 3:05 PM
Subject: Re: Nova 4/C Questions
--- On Wed, 7/1/09, ics65 at sbcglobal.net <ics65 at sbcglobal.net> wrote:
I only have experience with the Nova
4 Jr. CPU and Nova 3, both without the Battery Backup,
Memory Management or Multiple/Divide options. The Nova 4 Jr.
CPU had 64k byte of memory in the front left corner of the
CPU pcb. It does have the virtual terminal that connects to
an external terminal. This replaced the paddle switch
functions of the Nova 3.
George, thanks. If the Nova 4 Jr. CPU is marked 'DCG JR. CPU' in the front
right-hand corner (and it's a pretty good bet), then that's probably what I
have and I'll confirm by looking for those memory chips.
Am I right in thinking that the console terminal connection is made through
pins on the backplane as there is apparently no socket on the board for this
purpose ?
Regards,
-Dave
10:23 a.m.
----- Original Message -----
From: <david_comley at yahoo.com>
Am I right in thinking that the console terminal connection is made through
pins on the backplane as there is apparently no socket on the board for this
purpose ?
George Wiegand wrote:
The console terminal connection maybe labeled directly on the backplane (a
row of ~10 pins), only 3 pins for the RS232 are needed. I guess you don't
have the info. to the pin outs?
Dave, what part of the world are you located in?
Dave, on your web page you mention "Each board has an AY-3-1015D UART on board
suggesting that the console serial port is built into the CPU". If you feel
like tracing the interface connections from the UART (probably thru some 1488/9
drivers), the datasheet for the 3-1015 is here:
http://www.datasheets.org.uk/pdf/761571.pdf
It's a pin-config'd UART, so the config may also be discernible from examination.
5433
days inactive
5434
days old
3 comments
4 participants
participants (4)
-
chris＠mainecoon.com -
david_comley＠yahoo.com -
hilpert＠cs.ubc.ca -
ics65＠sbcglobal.net