12 Jan
2019
12 Jan
'19
2:03 p.m.
On 1/12/19 4:30 PM, allison via cctalk wrote:
My 11/73 only has a console, thus the need for the DHV11 but really
only one port. (Although I may try putting multiple serial ports in
all the boxes and doing some "networking" over them. :-)
On 01/12/2019 04:14 PM, Bill Gunshannon via cctalk
wrote:
My only problem is I have 3 DEQNA and 1 DELQA. I thought I read
somewhere recently that the DEQNA was the better of the two.
As for software, what about the Kent TCPIP package? Will that
not work with the DEQNA? I thought the two Ethernet controllers
for QBUS were functionally the same.
And, while we are at it, if I type BOOT XH does it look for a
MOP Server?
On 1/12/19 2:25 PM, allison via cctalk wrote:
BA11 box
with one of the usual two common backplanes or standard BA23.
Problem with DEQNA is what OS?? RT11 does nothing with it.? RSX-11
I don't have a recent enough version so its often unused/ On 01/12/2019 12:29 PM, Pete Turnbull via cctalk
wrote:
My 11/23+ is in a box labeled PDP-11/23PLUS on the front
with
three toggle switches. :-) It has a 9276-A backplane labeled
OPTION 11/23B. It is a 9 slot, Q22 A-B-C-D . That's the home
for my next system which will (hopefully) have 2 meg of memory,
a DEQNA and an Andromeda Card for a small hard disk and 8" floppy. On 12/01/2019 01:24, Zane Healy via cctalk
wrote:
> I?m pretty sure you could get the /23+, /53, /73, /83, and /93 in
> either a BA23 or a BA123.? I have an actual badged BA23 pedestal for
> my /23+.
I'm fairly certain all microPDP-11/23+ systems were only sold in BA23
boxes, and I think microPDP-11/73 and the later, cheaper, cut-down
11/53 were as well.? But almost all the 11/83 systems I've ever seen
were in BA123 boxes, though they did sell some in BA23 pedestals -
I've got one.
Pete,
Your right the 11/23+ showed up on a lot of boxes but not the BA123
though it would fit. I also plan on another small 11/23 with 128KW of
memory and an
18 bit backplane so I can use the RX02 emulator. And, probably
an Andromeda in there, too
To bring my part of this discussion to an end, I now have a BA23
MicroPDP box with an 11/73 CPU, 4 meg of memory, DHV11 for eight
serial lines (probably only use one to talk to a TU58 emulator
but the DHV11 was just sitting there looking lonely) a DEQNA
and a CMD SCSI Controller set for 6 disks and one tape. Only
thing it lacks at this point is software.
The TU58 like a responsive IO a DLV11J
is a better choice for console and DD
and works best if first card after the memory (early in the interrupt
grant chain). The simulators are faster than tu58 so it makes for
fewer retries.
I use DHV11 for terminal and modem lines (slower stuff).
More surprising than most would accept. It's not a PDP-11 but
I have a 6809 that was sold as a toy for running games that I have
had 4 remote login sessions and a web server running on. And
that was with networked disks and all remote access over a 115K
serial line on a bitbanger port!! I would love to see a version
of that OS on the PDP-11.
bill
On to my next project.
Thanks for all the help. I had forgotten just how much fun
real computers were compared to PC's and MAC's.
Yes they are.? Their
performance without all the gui gunk is often a
suprize
to many that have not worked with them.