8 Mar
2018
8 Mar
'18
5:30 p.m.
This turned up on Fess Bouc yesterday and it was news to me.
It's a DIY replica of an original IBM PC motherboard:
http://www.mtmscientific.com/pc-retro.html
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? Google Mail/Hangouts/Plus: lproven at gmail.com
Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn: liamproven
UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053
8 Mar
8 Mar
5:38 p.m.
On Thu, 8 Mar 2018, Liam Proven via cctalk wrote:
This turned up on Fess Bouc yesterday and it was news
to me.
It's a DIY replica of an original IBM PC motherboard:
http://www.mtmscientific.com/pc-retro.html
That's actually been around for 3 or 4 years. So far I've made successful
saving throws vs buying one every time it's come up. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
5:38 p.m.
Hmmmm I don't remember my original PC having all the chips in sockets
nor do I recall it having 64Kb DRAMs.? I clearly recall that it had one
bank of 16Kb DRAMs soldered down and sockets for three more banks of
16Kb chips.? The only other sockets on the board where for the ROM, CPU,
and math coprocessor.? hardly a fathful reproduction.
Paul.
On 2018-03-08 6:30 PM, Liam Proven via cctalk wrote:
This turned up on Fess Bouc yesterday and it was news
to me.
It's a DIY replica of an original IBM PC motherboard:
http://www.mtmscientific.com/pc-retro.html
5:49 p.m.
On 03/08/2018 05:38 PM, Paul Berger via cctalk wrote:
Hmmmm I don't remember my original PC having all
the chips in sockets
nor do I recall it having 64Kb DRAMs.? I clearly recall that it had
one bank of 16Kb DRAMs soldered down and sockets for three more banks
of 16Kb chips.? The only other sockets on the board where for the ROM,
CPU, and math coprocessor.? hardly a fathful reproduction.
Paul.
Paul,
That is the rev-b still 5150 but the next 4 digits are that hardware it was.
your correct the first version only took 16k Drams x4 banks (64K).? It was
very obvious that was way too little and a "few" revs were done to use 64K
and later 256K parts.
Personally why would any one want to build that?? It ran at 50% of what
the 8088 could do in the day and was memory poor.? I know that as I was
running a Multibus 8088 at 8mhz just as that was introduced.? That
was faster.
Allison
On 2018-03-08 6:30 PM, Liam Proven via cctalk wrote:
This turned up on Fess Bouc yesterday and it was
news to me.
It's a DIY replica of an original IBM PC motherboard:
http://www.mtmscientific.com/pc-retro.html
5:59 p.m.
On 2018-03-08 6:49 PM, allison via cctalk wrote:
On 03/08/2018 05:38 PM, Paul Berger via cctalk wrote:
Ok I was not aware there was a second version I got mine in Nov. 81, and
I agree who would really want one.? If you really wanted the 4.7MHz
experience, I still see lots of PC and XTs go by on eBay.? I never did
bother keeping a planar from an original PC, but have 2 from XTs.? One
thing the original PC was useful for was the cassette interface on it
could be used to emulate a TTY device for deaf people.? A long time ago
I built a clone of it on a ISA bus card for a person that wanted to use
it in an XT.
Paul.
Hmmmm I don't remember my original PC having
all the chips in sockets
nor do I recall it having 64Kb DRAMs.? I clearly recall that it had
one bank of 16Kb DRAMs soldered down and sockets for three more banks
of 16Kb chips.? The only other sockets on the board where for the ROM,
CPU, and math coprocessor.? hardly a fathful reproduction.
Paul.
Paul,
That is the rev-b still 5150 but the next 4 digits are that hardware it was.
your correct the first version only took 16k Drams x4 banks (64K).? It was
very obvious that was way too little and a "few" revs were done to use 64K
and later 256K parts.
Personally why would any one want to build that?? It ran at 50% of what
the 8088 could do in the day and was memory poor.? I know that as I was
running a Multibus 8088 at 8mhz just as that was introduced.? That
was faster.
Allison
6 p.m.
On 2018-03-08 6:49 PM, allison via cctalk wrote:
On 03/08/2018 05:38 PM, Paul Berger via cctalk wrote:
Ok I was not aware there was a second version I got mine in Nov. 81, and
I agree who would really want one.? If you really wanted the 4.7MHz
experience, I still see lots of PC and XTs go by on eBay.? I never did
bother keeping a planar from an original PC, but have 2 from XTs.? One
thing the original PC was useful for was the cassette interface on it
could be used to emulate a TTY device for deaf people.? A long time ago
I built a clone of it on a ISA bus card for a person that wanted to use
it in an XT.
Paul.
Hmmmm I don't remember my original PC having
all the chips in sockets
nor do I recall it having 64Kb DRAMs.? I clearly recall that it had
one bank of 16Kb DRAMs soldered down and sockets for three more banks
of 16Kb chips.? The only other sockets on the board where for the ROM,
CPU, and math coprocessor.? hardly a fathful reproduction.
Paul.
Paul,
That is the rev-b still 5150 but the next 4 digits are that hardware it was.
your correct the first version only took 16k Drams x4 banks (64K).? It was
very obvious that was way too little and a "few" revs were done to use 64K
and later 256K parts.
Personally why would any one want to build that?? It ran at 50% of what
the 8088 could do in the day and was memory poor.? I know that as I was
running a Multibus 8088 at 8mhz just as that was introduced.? That
was faster.
Allison 
6 p.m.
On Thu, 8 Mar 2018, Paul Berger via cctalk wrote:
Hmmmm I don't remember my original PC having all
the chips in sockets nor do
I recall it having 64Kb DRAMs.? I clearly recall that it had one bank of
16Kb DRAMs soldered down and sockets for three more banks of 16Kb chips.?
The only other sockets on the board where for the ROM, CPU, and math
coprocessor.? hardly a fathful reproduction.
I think that this is "revision B"?? (64KB - 256KB). The REAL original
was 16K - 64K.
Since it is an unassembled board, you can achieve greater realism by
soldering in the parts, instead of soldering sockets. If you DO solder
sockets, at least use GOOD ones. My third "PC" was an unpopulated
imitation XT board (very common and CHEAP at the computer swaps), that I
populated with Augat sockets.
Do they offer a 5 slot case?
a buckling spring keyboard?
Their diagnostic ROM requires that the system be WORKING, and have video.
Howzbout the Fischer? diagnostic ROM, thta came with a hard-wired
configured serial port, that could perform some tests on a system that did
NOT boot to the point of video.
10 Mar
10 Mar
8:24 p.m.
On Thu, 8 Mar 2018, Ali wrote:
Not much to tell, and I don't know much.
I think that it was Todd Fischer.
He supplied a ROM, and a serial board that was hard configured for a
terminal (can't run software to configure a serial card if the machine
won't boot!). It therefore did not rely on the video working.
He also had been selling cases and power supplies for 5.25" drives at the
conputer swaps.
I really enjoyed the P.O.S.T. cards. In debugging code, I could insert a
simple output to a port of the value of a variable, with minimal
disruption of any of the rest of the code.
A friend pointed out that most diagnostic software, including many memory
tests, etc. would not run if there actually WAS a fault, such as bad RAM
in Bank0.
So, as a joke, he wrote a "DIAGNOSTIC PROGRAM", that put "It works!"
on
the screen. "If you get the message, then it means that everything is at
least sorta working. If you do not get the message, then something is
wrong." Later, he changed it to "friendlier message", and had it say,
"Hello, world".
Howzbout the
Fischer? diagnostic ROM, thta came with a hard-wired
configured serial port, that could perform some tests on a system that
did NOT boot to the point of video.
Now that does sound interesting. Tell us more
uncle Fred ;). 
11 Mar
11 Mar
12:53 a.m.
I have several boards labeled 5160 64/256K old style sys on the sealed
static bag and 1503334 on the board. Another has 50008?2 on the etch.
Any info would be useful. If you are interested in any of them please
contact me off list.
Thanks, Paul
On Sat, Mar 10, 2018 at 7:24 PM, Fred Cisin via cctalk <
cctalk at classiccmp.org> wrote:
On Thu, 8 Mar 2018, Ali wrote:
Howzbout the Fischer? diagnostic ROM, thta came
with a hard-wired
Not much to tell, and I don't know much.
I think that it was Todd Fischer.
He supplied a ROM, and a serial board that was hard configured for a
terminal (can't run software to configure a serial card if the machine
won't boot!). It therefore did not rely on the video working.
He also had been selling cases and power supplies for 5.25" drives at the
conputer swaps.
I really enjoyed the P.O.S.T. cards. In debugging code, I could insert a
simple output to a port of the value of a variable, with minimal disruption
of any of the rest of the code.
A friend pointed out that most diagnostic software, including many memory
tests, etc. would not run if there actually WAS a fault, such as bad RAM in
Bank0. So, as a joke, he wrote a "DIAGNOSTIC PROGRAM", that put "It
works!"
on the screen. "If you get the message, then it means that everything is
at least sorta working. If you do not get the message, then something is
wrong." Later, he changed it to "friendlier message", and had it say,
"Hello, world".
configured serial port, that could perform some
tests on a system that
did NOT boot to the point of video.
Now that does sound interesting. Tell us more uncle Fred ;).
8 Mar
8 Mar
6:42 p.m.
On Thu, 8 Mar 2018, Paul Berger via cctalk wrote:
Hmmmm I don't remember my original PC having all
the chips in sockets nor do
I recall it having 64Kb DRAMs.? I clearly recall that it had one bank of
16Kb DRAMs soldered down and sockets for three more banks of 16Kb chips.?
The only other sockets on the board where for the ROM, CPU, and math
coprocessor.? hardly a fathful reproduction.
If I remember correctly, the original PC/5150 BIOS supported a maximum of
544K; later BIOS could handle 640K.
What were the details for modifying a 64-256 5150 to 640K on the
motherboard? (It was not the same as converting 5160).
It did NOT involve unsoldering the 64K Bank0.
6:51 p.m.
Umm, I'm missing something here. It can't possibly be $149.50 as listed on
the webpage. I would think that would be the price for the bare board if
anything.
Marc
On Thu, Mar 8, 2018 at 3:42 PM, Fred Cisin via cctalk <cctalk at classiccmp.org
wrote:
On Thu, 8 Mar 2018, Paul Berger via cctalk wrote:
Hmmmm I don't remember my original PC having
all the chips in sockets nor
do I recall it having 64Kb DRAMs. I clearly recall that it had one bank of
16Kb DRAMs soldered down and sockets for three more banks of 16Kb chips.
The only other sockets on the board where for the ROM, CPU, and math
coprocessor. hardly a fathful reproduction.
If I remember correctly, the original PC/5150 BIOS supported a maximum of
544K; later BIOS could handle 640K.
What were the details for modifying a 64-256 5150 to 640K on the
motherboard? (It was not the same as converting 5160).
It did NOT involve unsoldering the 64K Bank0.
9 Mar
9 Mar
10:04 a.m.
On Thu, 8 Mar 2018, Marc Howard via cctalk wrote:
Umm, I'm missing something here. It can't
possibly be $149.50 as listed on
the webpage. I would think that would be the price for the bare board if
anything.
As far as I know, it's a complete kit. It's been the same price since
it's introduction 3+ years ago.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
10:53 a.m.
On Fri, Mar 9, 2018 at 10:04 AM, geneb via cctalk <cctalk at classiccmp.org> wrote:
On Thu, 8 Mar 2018, Marc Howard via cctalk wrote:
"You will receive all the components to build a PC Motherboard exactly
as shown here:"
If I didn't already have a couple 5150s (and a nice 5160 I recently
acquired and repaired), I'd consider this board, but $150 will buy
other cool vintage toys so I'm going to pass.
If someone wanted to pay me to do the assembly, that would be kinda
fun. I can get through several movies soldering that many joints.
-ethan
Umm, I'm missing something here. It
can't possibly be $149.50 as listed
on
the webpage. I would think that would be the price for the bare board if
anything.
As far as I know, it's a complete kit. It's been the same price since
it's
introduction 3+ years ago. 
11:02 a.m.
If I didn't already have a couple 5150s (and a
nice 5160 I recently
acquired and repaired), I'd consider this board, but $150 will buy
other cool vintage toys so I'm going to pass.
Ditto. A fun project nonetheless.
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest home computer collection?
t: @binarydinosaurs f: facebook.com/binarydinosaurs
w: www.binarydinosaurs.co.uk
On 9 March 2018 at 15:53, Ethan Dicks via cctalk <cctalk at classiccmp.org>
wrote:
> On Fri, Mar 9, 2018 at 10:04 AM, geneb via cctalk <cctalk at classiccmp.org>
> wrote:
> > On Thu, 8 Mar 2018, Marc Howard via cctalk wrote:
> >
> >> Umm, I'm missing something here. It can't possibly be $149.50 as
listed
> >> on
> >> the webpage. I would think that would be the price for the bare board
> if
> >> anything.
> >>
> > As far as I know, it's a complete kit. It's been the same price since
> it's
> > introduction 3+ years ago.
>
> "You will receive all the components to build a PC Motherboard exactly
> as shown here:"
>
If I didn't already have a couple 5150s (and a
nice 5160 I recently
acquired and repaired), I'd consider this board, but $150 will buy
other cool vintage toys so I'm going to pass.
>
> If someone wanted to pay me to do the assembly, that would be kinda
> fun. I can get through several movies soldering that many joints.
>
> -ethan
>
7:52 p.m.
What about the ASICs, Ethan? :D
(An A500 recreation was made - the board was RED! :D )
2018-03-08 21:48 GMT-03:00 Ethan via cctalk <cctalk at classiccmp.org>:
This turned up on Fess Bouc yesterday and it was news
to me.
It's a DIY replica of an original IBM PC
motherboard:
Someone needs to make the Amiga 3000 motherboard replica.
--
: Ethan O'Toole
8:35 p.m.
Yeah, I'd seen this one a few years ago and also thought, "why?" 5150
boards aren't *that* uncommon yet. Though I suppose if you just want to
build one, there's nothing wrong with that!
W.R.T. the ROMs requiring the board to work -- those are the
SuperSoft/Landmark ROMs (freely available as BIN files elsewhere) and they
do work with a fairly broken system. They totally replace the PC BIOS
(there are XT and AT versions, too). You get beep codes when they first
come up, and it'll drive MDA or CGA directly without PC BIOS routines. Of
particular interest is the ability to find a faulty DRAM in bank 0 on a
5150 board, which is of course always soldered.
Thanks,
Jonathan
On Thu, Mar 8, 2018 at 7:52 PM, Alexandre Souza via cctalk <
cctalk at classiccmp.org> wrote:
What about the ASICs, Ethan? :D
(An A500 recreation was made - the board was RED! :D )
2018-03-08 21:48 GMT-03:00 Ethan via cctalk <cctalk at classiccmp.org>:
This turned up on Fess Bouc yesterday and it was
news to me.
It's a DIY replica of an original IBM PC
motherboard:
Someone needs to make the Amiga 3000 motherboard replica.
--
: Ethan O'Toole
2:41 a.m.
On 9 March 2018 at 01:48, <ethan at 757.org> wrote:
Someone needs to make the Amiga 3000 motherboard replica.
+1
As this wonderful lady says in her interview...
https://www.youtube.com/watch?v=sDfIkXf3uzA
(81Y old Amiga-using artist.)
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? Google Mail/Hangouts/Plus: lproven at gmail.com
Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn: liamproven
UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053
2325
days inactive
2328
days old
19 comments
13 participants
participants (13)
-
alexandre.tabajara＠gmail.com -
allisonportable＠gmail.com -
binarydinosaurs＠gmail.com -
cctalk＠ibm51xx.net -
cisin＠xenosoft.com -
cramcram＠gmail.com -
ethan.dicks＠gmail.com -
ethan＠757.org -
geneb＠deltasoft.com -
lproven＠gmail.com -
phb.hfx＠gmail.com -
systems.glitch＠gmail.com -
useddec＠gmail.com