> On Jun 12, 2016, at 20:55, Bruce Ray wrote:
>
> G'day Mark -
>
> Brief notes...
Thanks!
> 4) 4075 TTY baudrate pretty easy to check; usually 4800 or 9600 baud, 7 data,
> even parity, 1 stop bit.
I determined earlier today that I had merely had a brain fart regarding the
strapping. The car
G'day Mark -
Brief notes...
1) DG part numbers are 005-xx-yy; 107-xx-yy numbers are circuit
board artwork numbers. Unfortunately, there is no standard
cross-reference between the two. Briefly, the part number is the
primary reference to be used because a single 107-xx-yy circuit
Disk testing update:
I have the controller in slot 11 still, and the drive interface cable is
connected to the edge paddle that appears to be wire-wrapped to slot 11. I
haven't tried it in slot 10 using edge connector P4 yet, because I think I
might need to fiddle with the two blue wires (bus g
> On Jun 12, 2016, at 00:44, Henk Gooijen wrote:
>
> Just like Mark, it's about time to spend some time on my NOVA3.
> I will be following this with interest!
Yay!
> Were all bulbs on the front panel of your NOVA intact Mark?
> Or did/do you also have dead lamps? Know of a source where to bu
-Oorspronkelijk bericht-
From: Mark J. Blair
Sent: Sunday, June 12, 2016 8:32 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Data General Nova 3 and 6045 Drive Questions
Aha! Now I remember. That Cassette I/O card is mostly unpopulated, and I think it's
Aha! Now I remember. That Cassette I/O card is mostly unpopulated, and I think
it's just installed for its serial port. I think Bruce had told me about that
long ago, but my memories are as dusty as the Nova is at the moment.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
More details: I can't be sure because the Nova rack is presently in a crowded
corner which is keeping me from removing the chassis from the rack in order to
get its top panel off. But it appears to me that the mystery edge connector
that I previously had the hard drive interface cable connected
> On Jun 11, 2016, at 22:00, Bruce Ray wrote:
>
> DG Model 6045 disk drive heads 0 and 1 are the removable platter, heads 2 and
> 3 are the 'fixed' platter. As you said, the controller memory address and
> sector/sector/count values are set to 0 by the IORESET pulse, so a read
> operation (S
DG Model 6045 disk drive heads 0 and 1 are the removable platter, heads
2 and 3 are the 'fixed' platter. As you said, the controller memory
address and sector/sector/count values are set to 0 by the IORESET
pulse, so a read operation (STRT pulse) will start the reading of the
bootstrap into lo
My Nova 3/12 system has a 6045 cartridge hard drive, with one fixed platter,
one removable platter, and a capacity of 10M. I haven't managed to boot my
computer from it yet, and after a long pause, my Nova 3 is requesting another
time slice of my attention.
I can see in the drive's technical ma
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