19 Jun
2007
19 Jun
'07
4:32 p.m.
Something tells me a MASSBUS-interfaced peripheral
would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software.
19 Jun
19 Jun
5:31 p.m.
It's still on my queue of things to do. I've iterated the design a
number of times now and it's *much* simpler than what I originally
planned on which will equate into a lower cost. :-) I'm actually
*very* excited about this project and will definitely get to it (sooner
rather than later).
I've done enough to do basic parts selection (Atmel uC, Xilinx FPGA,
SRAMs, FLASH and I2C bits). It'll use an IDE disk for the actual
storage. All code & programming data will be in FLASH (ie you won't
loose the boot disk).
At this point it's getting enough time to finish the projects that are
queued up a head of it done (and my normal job requires a fair amount of
time too...still at work as I compose this).
Al Kossow wrote:
--
TTFN - Guy
Something
tells me a MASSBUS-interfaced peripheral would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software.
20 Jun
20 Jun
12:27 a.m.
On Jun 19, 2007, at 8:31 PM, Guy Sotomayor wrote:
It's still on my queue of things to do. I've
iterated the design a
number of times now and it's *much* simpler than what I originally
planned on which will equate into a lower cost. :-) I'm actually
*very* excited about this project and will definitely get to it
(sooner rather than later).
I've done enough to do basic parts selection (Atmel uC, Xilinx
FPGA, SRAMs, FLASH and I2C bits). It'll use an IDE disk for the
actual storage. All code & programming data will be in FLASH (ie
you won't loose the boot disk).
At this point it's getting enough time to finish the projects that
are queued up a head of it done (and my normal job requires a fair
amount of time too...still at work as I compose this).
This is very exciting news...please keep us posted! I'd love to
help with testing (KS10) or even development.
-Dave
--
Dave McGuire
Port Charlotte, FL
12:17 a.m.
On Jun 19, 2007, at 7:32 PM, Al Kossow wrote:
Yes, all...what, fifteen of us? Far fewer than something like
Brad's Unibus disk controller.
-Dave
--
Dave McGuire
Port Charlotte, FL
Something
tells me a MASSBUS-interfaced peripheral would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software. 
12:48 a.m.
Dave McGuire wrote:
On Jun 19, 2007, at 7:32 PM, Al Kossow wrote:
Yes, all...what, fifteen of us? Far fewer than something like Brad's
Unibus disk controller.
The 11/[750,780,785,790,795] has Massbus too.
Peace... Sridhar
Something tells me a MASSBUS-interfaced peripheral would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software. 
5:31 a.m.
On 6/20/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
Dave McGuire wrote:
Yep. I have an 11/750 with a Massbus controller. It used to have a
TU78 on it, but we had to leave that behind when the company closed.
I saved what I could, but the TU78 was one of the casualties (in 1993,
lest anyone think it was a near miss).
-ethan
Yes, all...what, fifteen of us? Far fewer than
something like Brad's
Unibus disk controller.
The 11/[750,780,785,790,795] has Massbus too.
8:14 a.m.
On Jun 20, 2007, at 3:48 AM, Sridhar Ayengar wrote:
Yes,
all...what, fifteen of us? Far fewer than something like
Brad's Unibus disk controller.
The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point!
-Dave
--
Dave McGuire
Port Charlotte, FL
Something
tells me a MASSBUS-interfaced peripheral would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design,
but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software.
8:37 a.m.
Dave McGuire wrote:
On Jun 20, 2007, at 3:48 AM, Sridhar Ayengar wrote:
The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have a
point!
One thing that I've tried to maintain in the hardware design is
flexibility. There will be two boards. Once board will contain all of
the main logic (FPGA, uC, IDE interface, etc). The daughter board will
have the interface adapter (ie massbus trancievers). By creating other
daughter boards (I'm planning a Unibus one too) and loading different
code into the FPGA and uC, it should be able to emulate almost any type
of disk device (maybe tapes too...but that'll be later).
--
TTFN - Guy
> Something tells me a MASSBUS-interfaced
peripheral would be of
> somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software.
Yes,
all...what, fifteen of us? Far fewer than something like
Brad's Unibus disk controller.
8:44 a.m.
On 6/20/07, Dave McGuire <mcguire at neurotica.com> wrote:
On Jun 20, 2007, at 3:48 AM, Sridhar Ayengar wrote:
I haven't tried to find an RH-11 recently, but an RH750 is a single
card (no backplane required), with a simple cable arrangement from the
11/750 backplane to the I/O bulkhead area (theoretically, depending on
how a modern Massbus device was constructed, one could even just run a
trio of 40-pin cables between the 11/750 backplane and the new device,
and bypass "real" Massbus cables).
I would almost expect that every 11/780 that's still running these
days has an RH780, but I doubt that's a very large pool of machines.
At least 11/750s are small enough to run in a home/office environment.
Even so, I'd think the most obvious consumers of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
likely, the PDP-10 crowd. I know I'd rather run a 3.5" IDE drive
attached to some electronics than an RP07 for every-day use.
I don't have hard numbers in front of me, but am of the opinion that
there are enough hobbyists who would buy a new Massbus disk to make
the effort worthwhile. Of couse there are more who could use a Unibus
disk, but that's no reason not to take a stab at Massbus.
-ethan
The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point!
9 a.m.
Ethan Dicks wrote:
On 6/20/07, Dave McGuire <mcguire at
neurotica.com> wrote:
The plan is (because real massbus
connectors are so hard to find) to use
3 40 pin ribbon cables (aka the in-cabinet massbus cabling) to go
between the controller (RH11, RH70, RH750, RH780, etc) and what I'm
building. That still allows for using an external massbus cable
arrangement if one so desires.
On Jun 20, 2007, at 3:48 AM, Sridhar Ayengar
wrote:
I haven't tried to find an RH-11 recently, but an RH750 is a single
card (no backplane required), with a simple cable arrangement from the
11/750 backplane to the I/O bulkhead area (theoretically, depending on
how a modern Massbus device was constructed, one could even just run a
trio of 40-pin cables between the 11/750 backplane and the new device,
and bypass "real" Massbus cables). The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point!
I don't have hard numbers in front of me, but am of the opinion that
there are enough hobbyists who would buy a new Massbus disk to make
the effort worthwhile. Of couse there are more who could use a Unibus
disk, but that's no reason not to take a stab at Massbus.
I hope so because
this is going to be a lot of work. :-) Not only do I
have to do the hardware design (and fab) but also have to write the
verilog for the FPGA and a resonable amount of code on the uC.
I'm in the process of redesigning my website. As part of that I'll put
up more details on "legacy disk emulator".
--
TTFN - Guy
9:25 a.m.
On 6/20/07, Guy Sotomayor <ggs at shiresoft.com> wrote:
Ethan Dicks wrote:
> an RH750 is a single
> card (no backplane required), with a simple cable arrangement from the
> 11/750 backplane to the I/O bulkhead area... one could even just run a
> trio of 40-pin cables between the 11/750 backplane and the new device,
> and bypass "real" Massbus cables).
The plan is (because real massbus connectors are so
hard to find) to use
3 40 pin ribbon cables (aka the in-cabinet massbus cabling) to go
between the controller (RH11, RH70, RH750, RH780, etc) and what I'm
building. That still allows for using an external massbus cable
arrangement if one so desires.
Sounds exactly what I had envisioned. Must be the obvious thing to do.
I'm in the process of redesigning my website. As
part of that I'll put
up more details on "legacy disk emulator".
Excellent. Can't wait.
-ethan
24 Jun
24 Jun
5:35 p.m.
Just to let folks know, I've completed the major component selection for
the design. I'm currently entering those components into EagleCAD. The
UI for EagleCAD to do this isn't the most friendly, so it'll probably
take me a few more days before I get them all entered (I've entered 2
today...most of it was remembering how to do it...but it's still not fun).
Here are the current specs (subject to change of course!):
* Two board solution (main board and i/f specific daughter board)
* Single IDE disk interface
* USB for getting disk images on/off the controller (from the PC it
will look like a USB disk)
* RS-232 serial port for managing the controller (selecting what
images are mounted on which "drives" and the type of drive)
* single massbus (or unibus) interface via a daughter board capable
of emulating the full complement of devices
* code (both uC and FPGA) will be capable of being field updated in
place (ie through the USB i/f...no special connectors)
* on board EEPROM contains config information across power cycles
I'm currently over designing this a bit but the parts I've selected are
still allowing me to come in at my (self-imposed) price targer. I'm not
saying what that is now, because once you add all of the other "little
bits" (Rs, Cs, Crystals, connectors, etc) the cost can inflate quite a
bit. :-( It also looks like this will be a 4-layer PCB, so I don't
know what the cost of that will be (yet).
Ethan Dicks wrote:
On 6/20/07, Guy Sotomayor <ggs at shiresoft.com>
wrote:
--
TTFN - Guy
Ethan Dicks wrote:
> an RH750 is a single
> card (no backplane required), with a simple cable arrangement from the
> 11/750 backplane to the I/O bulkhead area... one could even just run a
> trio of 40-pin cables between the 11/750 backplane and the new device,
> and bypass "real" Massbus cables).
The plan is (because real massbus connectors are
so hard to find) to use
3 40 pin ribbon cables (aka the in-cabinet massbus cabling) to go
between the controller (RH11, RH70, RH750, RH780, etc) and what I'm
building. That still allows for using an external massbus cable
arrangement if one so desires.
Sounds exactly what I had envisioned. Must be the obvious thing to do.
I'm in the process of redesigning my website.
As part of that I'll put
up more details on "legacy disk emulator".
Excellent. Can't wait.
-ethan
20 Jun
20 Jun
6:18 p.m.
Guy Sotomayor wrote:
..
I hope so because this is going to be a lot of work.
:-) Not only do I
have to do the hardware design (and fab) but also have to write the
verilog for the FPGA and a resonable amount of code on the uC.
It wasn't that hard for unibus. I don't know much about massbus,
however, that might be a lot harder (no doubt).
My first cpld version had the cpu doing all the work and that put a big
load on the cpu; but it does do dma in both directions and can generate
interrupts. I got it to boot rt-11 via a simulated rl02.
I've since redesigned the cpld to take some load off the cpu. But work
has gotten in the way of progress. It is nice to use a cf disk,
however, as a backing store. very simple and easy to update. I just
made a simple 4 layer quad width board; I used a split power plane with
half the board at 5v and half at 3.3v; the cpld I used has 5v tolerant
i/o. for the cpu I used an atmel sam7s, which is my current favorite
arm7 cpu.
I hope to get back to it this summer.
-brad
9:02 a.m.
On Wednesday 20 June 2007 11:44, Ethan Dicks wrote:
I would almost expect that every 11/780 that's
still running these
days has an RH780, but I doubt that's a very large pool of machines.
While I don't have it running yet, my 11/780 didn't come with an RH780.
It did come with a UC18 Unibus SCSI controller though...
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
11:49 a.m.
On 6/20/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
Ethan Dicks wrote:
Mine have SI9900s, but I'd love to throw an RH70 in one.
-ethan
Even so, I'd think the most obvious consumers
of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
11:59 a.m.
On Jun 20, 2007, at 2:49 PM, Ethan Dicks wrote:
Mine have SI9900s, but I'd love to throw an RH70 in one.
I've got a pair of Emulex SC72s for mine...The SC72 is a set of
boards that plugs into the RH70 slots in an 11/70, and controls SMD
drives. I've not installed them yet, but I expect them to be very nice.
-Dave
--
Dave McGuire
Port Charlotte, FL
Even so, I'd think the most obvious consumers of a
new Massbus
storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
1:06 p.m.
Dave McGuire wrote:
On Jun 20, 2007, at 2:49 PM, Ethan Dicks wrote:
Mine have SI9900s, but I'd love to throw an RH70 in one.
I've got a pair of Emulex SC72s for mine...The SC72 is a set of
boards that plugs into the RH70 slots in an 11/70, and controls SMD
drives. I've not installed them yet, but I expect them to be very nice.
They *are* very nice. I have 2 sets in my 11/70. One for controlling
the Eagles and the other for the CDC 9766's.
--
TTFN - Guy
Even so, I'd think the most obvious consumers of a
new Massbus
storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
3:49 p.m.
On Jun 20, 2007, at 4:06 PM, Guy Sotomayor wrote:
I've got a pair of Emulex SC72s for mine...The SC72 is a set of
boards that plugs into the RH70 slots in an 11/70, and controls
SMD drives. I've not installed them yet, but I expect them to be
very nice.
They *are* very nice. I have 2 sets in my 11/70. One for
controlling the Eagles and the other for the CDC 9766's.
Very nice! I am looking forward to using one. I'm a little short
on SMD drives but I think I still have a pair of Fuji M2372Ks.
-Dave
--
Dave McGuire
Port Charlotte, FL
> Even so,
I'd think the most obvious consumers of a new Massbus
> storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
Mine have SI9900s, but I'd love to throw an RH70 in one. 
5:18 p.m.
Guy Sotomayor wrote:
Dave McGuire wrote:
I have a couple of SC72s which I hope to use in my 11/70 to hook up
both my CDC 9762, Fujitsu M2284K, and a pair of Seagate (CDC) 9720 Sabre
drives. I'm hoping that the SC72 can handle the data rate of the Sabres.
Does anyone know?
--tom
On Jun 20, 2007, at 2:49 PM, Ethan Dicks wrote:
I've got a pair of Emulex SC72s for mine...The SC72 is a set of
boards that plugs into the RH70 slots in an 11/70, and controls SMD
drives. I've not installed them yet, but I expect them to be very nice.
They *are* very nice. I have 2 sets in my 11/70. One for controlling
the Eagles and the other for the CDC 9766's.
> Even
so, I'd think the most obvious consumers of a new Massbus
> storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
Mine have SI9900s, but I'd love to throw an RH70 in one.
21 Jun
21 Jun
12:01 a.m.
Dave McGuire wrote:
On Jun 20, 2007, at 2:42 PM, Sridhar Ayengar wrote:
You got another one??
I still have my dad's old one.
Peace... Sridhar
Even so,
I'd think the most obvious consumers of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
Indeed. My 11/70 has RP06s.
20 Jun
20 Jun
11:50 a.m.
On Jun 20, 2007, at 11:44 AM, Ethan Dicks wrote:
I haven't tried to find an RH-11 recently, but an RH750 is a single
card (no backplane required), with a simple cable arrangement from the
11/750 backplane to the I/O bulkhead area (theoretically, depending on
how a modern Massbus device was constructed, one could even just run a
trio of 40-pin cables between the 11/750 backplane and the new device,
and bypass "real" Massbus cables).
An RH-11 is a four-slot backplane full of cards. And the most
static-sensitive piece of DEC equipment I have *ever* seen.
The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point! I would almost expect that every 11/780 that's
still running these
days has an RH780, but I doubt that's a very large pool of machines.
At least 11/750s are small enough to run in a home/office environment.
Even so, I'd think the most obvious consumers of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
likely, the PDP-10 crowd. I know I'd rather run a 3.5" IDE drive
attached to some electronics than an RP07 for every-day use.
Well I'd love to have one for my PDP-11/70, but at least I do have
other disk options for it, so it's not as urgent. The KS10, on the
other hand, is a big paperweight without a TU45 and a MASSBUS-
attached disk.
I don't have hard numbers in front of me, but am
of the opinion that
there are enough hobbyists who would buy a new Massbus disk to make
the effort worthwhile.
Well, with VAXen in mind, I'd be inclined to agree...though it's
not really that difficult to get non-MASSBUS disks on VAXen.
Of couse there are more who could use a Unibus
disk, but that's no reason not to take a stab at Massbus.
No, absolutely not...and I'd love to see it happen.
-Dave
--
Dave McGuire
Port Charlotte, FL
1:16 p.m.
On 6/20/07, Dave McGuire <mcguire at neurotica.com> wrote:
An RH-11 is a four-slot backplane full of cards.
And the most
static-sensitive piece of DEC equipment I have *ever* seen.
I haven't touched one since about 1988. Didn't blow it up, so I must
have been using reasonable ESD procedures (I used to make Unibus/Qbus
cards, so I'm kinda careful with that stuff).
We had a couple of RM02s attached to something with a Unibus - can't
remember exactly what, but our primary VAX there was an 11/730 (that
managed to survive 4th of July weekend during a heatwave in a closet
when the airconditioner failed - it was well over 110F in there when
we opened the door), and I know we didn't try to use an RH-11 with
that.
It was probably an 11/24 or 11/34, thinking back.
Well I'd love to have one for my PDP-11/70, but
at least I do have
other disk options for it, so it's not as urgent. The KS10, on the
other hand, is a big paperweight without a TU45 and a MASSBUS-
attached disk.
Sure.
Well, with VAXen in mind, I'd be inclined to
agree...though it's
not really that difficult to get non-MASSBUS disks on VAXen.
No, it's not. One of the easiest ways is a UDA50. At Software
Results, we had Massbus disk (RM03 as hot spares, plus an
SI-9900-to-SMD controller) and Unibus disk (UDA50 and RL11) on our
11/750. By the early 1990s, the SI9900 was the fastest, but we tended
to hang new disks off of the UDA50 rather than mess with SMD cables
and distribution cards in the disk box.
I've seen folks talk about a Unibus SCSI controller, but I've never
seen one up close. To me, that'd be a nice thing to have in an
11/750. I keep contemplating turning a COMBOARD into a SCSI
controller, but it'd be slow - the COMBOARD can do DMA to the Unibus,
but its own processor is an 8MHz 68000 which would be lucky to be able
to push over 200Kb/sec from its side (it was designed as a
communication engine, so it only had to be able to keep a 56kbps pipe
full).
Barring a wave of inexpensive Unibus SCSI cards, I think Guy's
approach is quite reasonable - build a core "storage engine" that can
stick onto either a Unibus or Massbus foundation module. That way,
everybody gets to share in economy of scale.
I'd personally be good for at least one of each, and possibly more
than one Unibus bit, if they weren't too expensive.
-ethan
8:10 p.m.
I think the RH11 is in a nine slot backplane. Most DEC RH controllers are
still available.
Paul Anderson
On 6/20/07, Dave McGuire <mcguire at neurotica.com> wrote:
On Jun 20, 2007, at 11:44 AM, Ethan Dicks wrote:
I haven't tried to find an RH-11 recently, but an RH750 is a single
card (no backplane required), with a simple cable arrangement from the
11/750 backplane to the I/O bulkhead area (theoretically, depending on
how a modern Massbus device was constructed, one could even just run a
trio of 40-pin cables between the 11/750 backplane and the new device,
and bypass "real" Massbus cables).
An RH-11 is a four-slot backplane full of cards. And the most
static-sensitive piece of DEC equipment I have *ever* seen.
The 11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point! I would almost expect that every 11/780
that's still running these
days has an RH780, but I doubt that's a very large pool of machines.
At least 11/750s are small enough to run in a home/office environment.
Even so, I'd think the most obvious consumers of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
likely, the PDP-10 crowd. I know I'd rather run a 3.5" IDE drive
attached to some electronics than an RP07 for every-day use.
Well I'd love to have one for my PDP-11/70, but at least I do have
other disk options for it, so it's not as urgent. The KS10, on the
other hand, is a big paperweight without a TU45 and a MASSBUS-
attached disk.
I don't have hard numbers in front of me, but
am of the opinion that
there are enough hobbyists who would buy a new Massbus disk to make
the effort worthwhile.
Well, with VAXen in mind, I'd be inclined to agree...though it's
not really that difficult to get non-MASSBUS disks on VAXen.
Of couse there are more who could use a Unibus
disk, but that's no reason not to take a stab at Massbus.
No, absolutely not...and I'd love to see it happen.
-Dave
--
Dave McGuire
Port Charlotte, FL
9:59 p.m.
Paul Anderson wrote:
I think the RH11 is in a nine slot backplane. Most
DEC RH controllers
are
still available.
No, the RH11 is in a 4 slot backplane.
If you know where there are RH20's I'd like to know. :-)
Paul Anderson
On 6/20/07, Dave McGuire <mcguire at neurotica.com> wrote:
--
TTFN - Guy
On Jun 20, 2007, at 11:44 AM, Ethan Dicks wrote:
An RH-11 is a four-slot backplane full of cards. And the most
static-sensitive piece of DEC equipment I have *ever* seen.
> The
11/[750,780,785,790,795] has Massbus too.
Well they *can*. As can many PDP-11s. So yes, I suppose you have
a point!
I haven't tried to find an RH-11 recently, but an RH750 is a single
card (no backplane required), with a simple cable arrangement from the
11/750 backplane to the I/O bulkhead area (theoretically, depending on
how a modern Massbus device was constructed, one could even just run a
trio of 40-pin cables between the 11/750 backplane and the new device,
and bypass "real" Massbus cables). I would almost expect that every 11/780
that's still running these
days has an RH780, but I doubt that's a very large pool of machines.
At least 11/750s are small enough to run in a home/office environment.
Even so, I'd think the most obvious consumers of a new Massbus
storage device would probably be either the 11/70 crowd, or, more
likely, the PDP-10 crowd. I know I'd rather run a 3.5" IDE drive
attached to some electronics than an RP07 for every-day use.
Well I'd love to have one for my PDP-11/70, but at least I do have
other disk options for it, so it's not as urgent. The KS10, on the
other hand, is a big paperweight without a TU45 and a MASSBUS-
attached disk.
I don't have hard numbers in front of me, but
am of the opinion that
there are enough hobbyists who would buy a new Massbus disk to make
the effort worthwhile.
Well, with VAXen in mind, I'd be inclined to agree...though it's
not really that difficult to get non-MASSBUS disks on VAXen.
Of couse there are more who could use a Unibus
disk, but that's no reason not to take a stab at Massbus.
No, absolutely not...and I'd love to see it happen.
-Dave
--
Dave McGuire
Port Charlotte, FL
8:46 a.m.
At 3:48 AM -0400 6/20/07, Sridhar Ayengar wrote:
Dave McGuire wrote:
Don't forget RH70 and RH11. [I know Guy won't. :-) ]
John
On Jun 19, 2007, at 7:32 PM, Al Kossow wrote:
Yes, all...what, fifteen of us? Far fewer than something like
Brad's Unibus disk controller.
The 11/[750,780,785,790,795] has Massbus too.
Something tells me a MASSBUS-interfaced peripheral would be of
somewhat limited appeal. ;)
Every DEC10 owner I know would want one. Guy started on a design, but
I think he got tied up with other projects. Mike Ross bought bits of
a commercial unit, but I don't think he ever found the software.
6389
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-
aek＠bitsavers.org -
brad＠heeltoe.com -
dundas＠caltech.edu -
ethan.dicks＠gmail.com -
ggs＠shiresoft.com -
mcguire＠neurotica.com -
pat＠computer-refuge.org -
ploopster＠gmail.com -
uban＠ubanproductions.com -
useddec＠gmail.com