8 Jul
2013
8 Jul
'13
4:08 p.m.
At 05:13 PM 7/8/2013, you wrote:
I am curious about the "Model 3 in a Model I
case." I've never
heard of this
transplant. Was it a commercial kit, a common hack or
a one-off
feat? Was any
additional hardware needed to make it work?
jht,
Yes it was a comercial kit from back in the day. It has everthing on
one circuit board the size of the Mod I's cpu board. As far a
hacking, you only had to cut
some of the plastic vains off to allow access for some of the
cables. You used the
Model I's monitor for the display.
I'm sure I have the documentation around someplace for it, but I have no idea
where. So I don't remember who built the kit. Did a couple google searchs and
couldn't find anything on it, suprising.
John
John T. Blair WA4OHZ email: jblair1948 at cox.net
Va. Beach, Va Phone: (757) 495-8229
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9 Jul
9 Jul
11:40 a.m.
At 05:13 PM 7/8/2013, you wrote:
Not the same thing, but more years ago than I care to remember, I
modifed a M1 to take 4164 RAMs and have 48K on the CPU board. I also
'obtained' a dump of thr M3 ROM, burned it into EPROM and fitted that to
the M1. It worked. Of coruse I didn;t have any of the M3 features, in
fact even thigns like the bilinking cursor didn't as there's no clock
interrupt in an M1.
My intention at the time was to wire-wrap the extra bits, including a
disk controller and a serial port. One thing stopped me from doing that.
I want to a radio rally (Hamfest) to see if I could find any useful bits
(like PCBs with WD disk cotnrolelr chips, flippy drives, etc). And I
bought a complete M3. Oh well...
I still have the hacked M1 somewhere...
-tony
I am curious about the "Model 3 in a Model I
case." I've never
heard of this
transplant. Was it a commercial kit, a common
hack or a one-off
feat? Was any
additional hardware needed to make it work?
jht,
Yes it was a comercial kit from back in the day. It has everthing on
one circuit board the size of the Mod I's cpu board. As far a
hacking, you only had to cut
some of the plastic vains off to allow access for some of the
cables. You used the
Model I's monitor for the display. 
1 p.m.
> > I am curious about the "Model 3 in a
Model I case." I've never
> > heard of this transplant. Was it a commercial kit, a common hack or
> > a one-off feat? Was any additional hardware needed to make it work?
Joe Garner (Elcompco) used to mount model 3 motherboards with a 5 inch
monitor into Halliburton attache cases for portable elevator data
acquisition systems. Later, he switched to a CP/M board and even tried to
market it (THAT lasted about 6 hours, until Adam Osborne made his
announcement), later, he switched to 5150, and then to Megatel Quark.
I think that he now uses commercial laptops.
My intention at the time was to wire-wrap the extra
bits, including a
disk controller and a serial port. One thing stopped me from doing that.
I want to a radio rally (Hamfest) to see if I could find any useful bits
(like PCBs with WD disk cotnrolelr chips, flippy drives, etc). And I
bought a complete M3. Oh well...
Sometimes, projects just don't work out, . . .
2:43 p.m.
On Tue, Jul 9, 2013 at 1:00 PM, Fred Cisin <cisin at xenosoft.com> wrote:
When I was in Chicago a couple years ago, we stayed at the Drake Hotel.
The elevator lobby had a CRT displaying elevator status, and it looked
ancient. Your comment made me go dig up the picture I took of it:
https://plus.google.com/u/0/photos/117997069161125071032/albums/58803294238…
That definitely looks like a TRS-80 to me.
- Josh
> > I am
curious about the "Model 3 in a Model I case." I've never
> > heard of this transplant. Was it a commercial kit, a common hack or
> > a one-off feat? Was any additional hardware needed to make it work?
Joe Garner (Elcompco) used to mount model 3 motherboards with a 5 inch
monitor into Halliburton attache cases for portable elevator data
acquisition systems.
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ard＠p850ug1.demon.co.uk -
cisin＠xenosoft.com -
derschjo＠gmail.com -
jblair1948＠cox.net