It's been a long and happy ride, but the time has come for me to let go some of the 3B1/PC730 parts I have. There's a lot of things I have that once meant the world to me. Now, the time has come to let others get some enjoyment from them. Without any
more fluff, here's what I have available:

a) 2-port serial/memory card with no memory chips.
b) Unmodified 512K card - fits in any of the three slots on the machine
c) MODIFIED 512K card - this fits in any physical slot, but pretends to live in the invisible slot 3. If you have a maxed out motherboard and a full serial card, you have only 3.5MB of memory. This is how you get the full 4MB into the system.
d) NEW IN BOX power supply for 3B1
e) USED BUT WORKING power supply in box for PC7300 (lower amperage)
f) Voice Power Card *and original floppies*
g) Tape Backup Unit and interface card. I have a mess of tapes available, too, but I have to first degauss my data off of them.
h) UnixPC (complete). I don't recall how much memory is on the motherboard. I suspect it may only be 0.5Kb. It's probably a P3...P5 board with the only modification probably being the replacement of the WD1010 chip into a WD2010 chip. The unit is
complete with a 40MB hard drive, a 2-port serial card, probably with some memory, and an Ethernet/10MB card. This was my backup unit, so while it was used, it's still in pretty good condition for a machine of this age.
i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a
separate chassis. This can also be used in a 3B2/300-310-400 if you want.

I may have other parts available at a later time. I seem to recall I had a spare backplane, and a motherboard with the P5.1 upgrade but dead video. Just could not find them yet.

If you're interested in some of these items, reach out to me with a reasonable offer.

j
---
Jeffrey L. Bromberger

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 2017-09-17, Jeffrey L. Bromberger <jbromberger@gmail.com> wrote:

It's been a long and happy ride, but the time has come for me to let
go some of the 3B1/PC730 parts I have. There's a lot of things I have
that once meant the world to me. Now, the time has come to let others
get some enjoyment from them. Without any more fluff, here's what I
have available:

[ ... ]

i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the
3B1 could be built to handle, provided you upgraded the WD1010 chip.
The unit still has the face plate, so it can be used either internally
(if you remove it) or externally in a separate chassis. This can also
be used in a 3B2/300-310-400 if you want.

One comment about this drive. I've made the necessary
modifications to use one (or two), and aside from the WD2010 replacing
the WD1010, you also need to add some circuitry to it to allow a second
data cable to the drive (if a second drive), and at least to add one
more head-select line. The default system has three head-select lines
(thus up to 8 heads), and the Maxtor XT2190 (and the Priam clone
thereof) have 15 heads. The WD chip swap simply increases the number of cylinders to allow it to go beyond 1024 cylinders, so it is necessary,
but not sufficient to use the totality of the larger drive.

It is better to have the larger drive in an external housing
with its own power supply, because the extra load of the XT2190 could
hasten the failure of the 7300's (3B1's) power supply. I used an
external drive box made for the 3B2, so the color scheme matches the
3B1, and it has a power supply which can be switched on by +5V (very low current) from the computer, so you don't have to remember to turn on the
drive box before booting the computer. It is possible to wire the data
cable so it carries both drives' worth in a single cable, so both drives
live out of the system box and thus it runs cooler. I also put the tape
drive in there as there was room.

All of this is for whoever gets what you are offering. I don't
need them, personally.

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: <BPdnicholsBP@d-and-d.com> | (KV4PH) Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Sunday, September 17, 2017 at 2:14:52 PM UTC-7, Jeffrey L. Bromberger wrote:

It's been a long and happy ride, but the time has come for me to let go some of the 3B1/PC730 parts I have. There's a lot of things I have that once meant the world to me. Now, the time has come to let others get some enjoyment from them. Without

any more fluff, here's what I have available:

a) 2-port serial/memory card with no memory chips.
b) Unmodified 512K card - fits in any of the three slots on the machine
c) MODIFIED 512K card - this fits in any physical slot, but pretends to live in the invisible slot 3. If you have a maxed out motherboard and a full serial card, you have only 3.5MB of memory. This is how you get the full 4MB into the system.
d) NEW IN BOX power supply for 3B1
e) USED BUT WORKING power supply in box for PC7300 (lower amperage)
f) Voice Power Card *and original floppies*
g) Tape Backup Unit and interface card. I have a mess of tapes available, too, but I have to first degauss my data off of them.
h) UnixPC (complete). I don't recall how much memory is on the motherboard. I suspect it may only be 0.5Kb. It's probably a P3...P5 board with the only modification probably being the replacement of the WD1010 chip into a WD2010 chip. The unit is

complete with a 40MB hard drive, a 2-port serial card, probably with some memory, and an Ethernet/10MB card. This was my backup unit, so while it was used, it's still in pretty good condition for a machine of this age.

i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a

separate chassis. This can also be used in a 3B2/300-310-400 if you want.

I may have other parts available at a later time. I seem to recall I had a spare backplane, and a motherboard with the P5.1 upgrade but dead video. Just could not find them yet.

If you're interested in some of these items, reach out to me with a reasonable offer.

j
---
Jeffrey L. Bromberger

Jeffrey,

Thanks for your generosity here. Since no one has taken you up on this yet, I'd like to respond.

I may be interested in these 2 items:

f) Voice Power Card *and original floppies*

i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a
separate chassis. This can also be used in a 3B2/300-310-400 if you want.

And possibly more if you don't otherwise find a good home for it.

If you wouldn't mind, please email me directly on the email address found at: http://mightyframe.blogspot.com/p/contact.html

Your efforts here are very appreciated, in sharing these somewhat rare and obscure items.

Best,
-AJ

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

"> i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a
separate chassis. This can also be used in a 3B2/300-310-400 if you want. "


Jeffrey, a friend just pointed out that your complete UNIX PC has a Ethernet/10MB card. I'm actually extremely interested in this. Do you still have the whole machine or any of these Ethernet/10MB cards?

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

"> i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a
separate chassis. This can also be used in a 3B2/300-310-400 if you want. "


Jeffrey, a friend just pointed out that your complete UNIX PC has a Ethernet/10MB card. I'm actually extremely interested in this. Do you still have the whole machine or any of these Ethernet/10MB cards?

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 2017-10-09, jlrcapital@gmail.com <jlrcapital@gmail.com> wrote:

"> i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the
3B1 could be built to handle, provided you upgraded the WD1010 chip.

[ ... ]

Jeffrey, a friend just pointed out that your complete UNIX PC has a Ethernet/10MB card. I'm actually extremely interested in this. Do you
still have the whole machine or any of these Ethernet/10MB cards?

Something to consider relative to the ethernet card -- the
software for it (from Willagong Software) is somewhat primitive, and
between it and the OS itself, there is no implementation of microtime
(which gives subdivisions of the seconds only from the normal clock.)
This means that ping(1M) for Sun's Solaris, or ping(8) for OpenBSD can't
be compiled, because it needs the fractional seconds to work. (Thus
that command is not in the system).

And -- it is rather fragile. Just from a Sun 2/120 (same 10 MHz MC-68010 CPU as the 7300/3B1/Unix-PC), a "ping -f" (flood ping)

======================================================================
-f Flood ping. Outputs packets as fast as they come back or one
hundred times per second, whichever is more. For every
ECHO_REQUEST sent, a period `.' is printed, while for every
ECHO_REPLY received a backspace is printed. This provides a
rapid display of how many packets are being dropped. Only the
superuser may use this option. This can be very hard on a
network and should be used with caution.
======================================================================

will crash the system. Still, it is quite useful, anyway. I had
several systems running that card and software.

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: <BPdnicholsBP@d-and-d.com> | (KV4PH) Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

In article <slrnotqp2s.pan.BPdnicholsBP@katana.d-and-d.com>,
"DoN. Nichols" <BPdnicholsBP@d-and-d.com> writes:

On 2017-10-09, jlrcapital@gmail.com <jlrcapital@gmail.com> wrote:

"> i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the
3B1 could be built to handle, provided you upgraded the WD1010 chip.

[ ... ]

Jeffrey, a friend just pointed out that your complete UNIX PC has a
Ethernet/10MB card. I'm actually extremely interested in this. Do you
still have the whole machine or any of these Ethernet/10MB cards?

Something to consider relative to the ethernet card -- the
software for it (from Willagong Software) is somewhat primitive, and
between it and the OS itself, there is no implementation of microtime
(which gives subdivisions of the seconds only from the normal clock.)
This means that ping(1M) for Sun's Solaris, or ping(8) for OpenBSD can't
be compiled, because it needs the fractional seconds to work. (Thus
that command is not in the system).

And -- it is rather fragile. Just from a Sun 2/120 (same 10 MHz MC-68010 CPU as the 7300/3B1/Unix-PC), a "ping -f" (flood ping)

======================================================================
-f Flood ping. Outputs packets as fast as they come back or one
hundred times per second, whichever is more. For every
ECHO_REQUEST sent, a period `.' is printed, while for every
ECHO_REPLY received a backspace is printed. This provides a
rapid display of how many packets are being dropped. Only the
superuser may use this option. This can be very hard on a
network and should be used with caution.
======================================================================

will crash the system. Still, it is quite useful, anyway. I had
several systems running that card and software.

Enjoy,
DoN.

I remember Wollongong's TCP/IP stack on SVR2 on the 3B15's; as the load went up, more bugs would be found (a lot of mbuf mishandling, I gather). After
a couple of years of bug fixing (much of it in-house, I suspect), it finally got pretty stable. For commercial software (although I think it came from early Berkeley code), it was a real pile of steaming smelly stuff, IMO.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Sunday, September 17, 2017 at 4:14:52 PM UTC-5, Jeffrey L. Bromberger wrote:

It's been a long and happy ride, but the time has come for me to let go some of the 3B1/PC730 parts I have. There's a lot of things I have that once meant the world to me. Now, the time has come to let others get some enjoyment from them. Without

any more fluff, here's what I have available:

a) 2-port serial/memory card with no memory chips.
b) Unmodified 512K card - fits in any of the three slots on the machine
c) MODIFIED 512K card - this fits in any physical slot, but pretends to live in the invisible slot 3. If you have a maxed out motherboard and a full serial card, you have only 3.5MB of memory. This is how you get the full 4MB into the system.
d) NEW IN BOX power supply for 3B1
e) USED BUT WORKING power supply in box for PC7300 (lower amperage)
f) Voice Power Card *and original floppies*
g) Tape Backup Unit and interface card. I have a mess of tapes available, too, but I have to first degauss my data off of them.
h) UnixPC (complete). I don't recall how much memory is on the motherboard. I suspect it may only be 0.5Kb. It's probably a P3...P5 board with the only modification probably being the replacement of the WD1010 chip into a WD2010 chip. The unit is

complete with a 40MB hard drive, a 2-port serial card, probably with some memory, and an Ethernet/10MB card. This was my backup unit, so while it was used, it's still in pretty good condition for a machine of this age.

i) Maxtor XT2190 hard drive. 190Mb - the absolute biggest that the 3B1 could be built to handle, provided you upgraded the WD1010 chip. The unit still has the face plate, so it can be used either internally (if you remove it) or externally in a

separate chassis. This can also be used in a 3B2/300-310-400 if you want.

I may have other parts available at a later time. I seem to recall I had a spare backplane, and a motherboard with the P5.1 upgrade but dead video. Just could not find them yet.

If you're interested in some of these items, reach out to me with a reasonable offer.

j
---
Jeffrey L. Bromberger

Jeffrey,
I don't know how I missed this! If anything is still available please let me know! use hostageATcomcast.net to reach me please...
George

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)