20 Feb
1999
20 Feb
'99
4:34 p.m.
I have 4 boards that go to IBM PS/2 model 70-386's, the 25 mhz version
to find homes for. These are the smaller processor board that mount to
J1 and J2 on the base motherboard and has the 80386DX-25 on it and has
the socket for the 80387DX-25. If you have a bad machine, or just need a
standard Intel 80386DX-25 chip, then this is for you!
The picture listed at
http://www.pc.ibm.com:80/bookmgr/pictures/s52g9971-picture-77-zoom.gif
shows the layout of the entire board and the ones I have are the small
board that #6 points to. The standoffs to mount the board are NOT
included. All have been tested with and without a 387 math processor and
function great.
How much? $5.00 each plus a few dollars shipping. They don't weigh much
so I imagine they should ship cheap. USA ad APO/FPO addresses only,
payable by either money order or cash (if you trust the mail that much).
If someone wants ALL FOUR right off the bat then I can go $16 for all of
them, plus a still small shipping fee. Drop me a note by direct email
and please include your zip code so I can guess-timate shipping. My
guess is probably $2 will get one of these to most places in the lower
48.
Russ Blakeman
Harned, KY USA
20 Feb
20 Feb
7:51 p.m.
Russ,
Will the boards work in a P70? If so I'd like to get one.
Joe
At 09:34 PM 2/20/99 -0600, you wrote:
I have 4 boards that go to IBM PS/2 model 70-386's,
the 25 mhz version
to find homes for. These are the smaller processor board that mount to
J1 and J2 on the base motherboard and has the 80386DX-25 on it and has
the socket for the 80387DX-25. If you have a bad machine, or just need a
standard Intel 80386DX-25 chip, then this is for you!
6:41 p.m.
Nope - totally different machines. All the P70's I've ever had ran a 386DX-25
anyway, other than the 486 version I had.
Joe wrote:
Russ,
Will the boards work in a P70? If so I'd like to get one.
Joe
At 09:34 PM 2/20/99 -0600, you wrote:
>I have 4 boards that go to IBM PS/2 model 70-386's, the 25 mhz version
>to find homes for. These are the smaller processor board that mount to
>J1 and J2 on the base motherboard and has the 80386DX-25 on it and has
>the socket for the 80387DX-25. If you have a bad machine, or just need a
>standard Intel 80386DX-25 chip, then this is for you!
21 Feb
21 Feb
5:51 a.m.
Date sent: Sun, 21 Feb 1999 00:51:15
Send reply to: classiccmp(a)u.washington.edu
From: Joe <rigdonj(a)intellistar.net>
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: FS: IBM PS/2 Model 70-386 (25 mhz) procesor boards
Russ,
Will the boards work in a P70? If so I'd like to get one.
Joe
(!!)
I wish that it does but this is not possible!
Those 4 little daughter boards plugs into T3 motherboards only and
that motherboard accepts 486DX 25 platform. That it. T1 and T2
motherboards have no "processor daughterboard" slot, only has 3
simm slots and cacheless and comes in 16 and 20mhz.
Aside; I have a Everex Step 386 33 with that cool diagnostic
display how that works as I wanted to use it with stuffed with PII
stuff in that case (Saving the former guts). Got all the pinout and
programmings examples from Everex site but how that works in
interfacing at hardware level to where?
Those cached 386dx w/ 387 25 daughterboard theorically perform
less than half of a straight 486DX 33 in performance wise. Not bad.
Anyone have ran the checkit 3.0 on those types?
I have AST premium bravo (came with 486DX 33 16MB from one of
rescue runs from a high school who got full truckload of all kinds
nothing interesting other than what I found before they finally threw
out 2 weeks ago. Whew, grabbed some before they are all gone!),
series (EISA with CPUID slots and another CPUID with ISA
motherboard) 486 on EISA ran like real 486DX 33 (16,000) without
L2 cache (yuk) and on another, 386dx 33 with 387, 64K cache ran
around 9,000 on checkit. Contrast to 486dx 25 performed about
11,000.
If anyone have seen AST components which I need for my bravo;
P5 60/66 or 90 (with or no P5 90 CPU is ok) CPUID card, "2 HD on
a rail" steel bracket that 2 HD's mounted on the its side, bracket
length is around same length of a full length ISA card and straddles
into 4 plastic standoffs molded into bottom case (it's all plastic!),
held in place by 3 screws. When fully configured with drives that
small case can hold 5 drives.
(I do have P5 66 CPU if anyone happens to have a CPUID card
without CPU and willing to give away or for little cash so that
computer will have P5 66 instead of cachless 486.)
I do have the AST part numbers if you need them to know which is
right ones that I wanted.
Thanks!
Wizard
9:05 a.m.
Russ Blakeman wrote:
I have 4 boards that go to IBM PS/2 model
70-386's, the 25 mhz version
to find homes for. These are the smaller processor board that mount to
J1 and J2 on the base motherboard and has the 80386DX-25 on it and has
the socket for the 80387DX-25. If you have a bad machine, or just need a
standard Intel 80386DX-25 chip, then this is for you!
I'ce got one of the 16mhz 70's - works, but every time I turn the thing on,
I've gotta re-run the setup disk (the battery & the speaker were missing
when I got it). Anyone know where I can score the missing parts for this
beastie ? I've got a modem card & a network card & if the thing can reboot
without re-setting up after a power out, I wouldn't mind pressing it into
service as another node on the BBS.
cheers,
Lance
20 Feb
20 Feb
10:22 p.m.
On 21 Feb 99 at 15:05, Lance Lyon wrote:
I'ce got one of the 16mhz 70's - works, but every time I turn the thing on,
I've gotta re-run the setup disk (the battery & the speaker were missing
when I got it). Anyone know where I can score the missing parts for this
beastie ? I've got a modem card & a network card & if the thing can reboot
without re-setting up after a power out, I wouldn't mind pressing it into
service as another node on the BBS.
cheers,
Lance
16 mhz sounds a bit strange for an 8570, I thought they only came in 20 and 25
mhz models. You might be wise to pick up Russ's board. The 25mhz model is
remarikably fast for a PS2 especially with the 387 co-processor.
You can get the battery in most camera shops. You want CR-P2 or ,BR-P2
from Panasonic, Varta, Sony, or DL 223A from Duracell.
6v. -lithium.
ciao larry
lwalker(a)interlog.com
21 Feb
21 Feb
5:45 a.m.
Lawrence Walker wrote:
16 mhz sounds a bit strange for an 8570, I thought
they only came in 20 and 25
mhz models. You might be wise to pick up Russ's board. The 25mhz model is
remarikably fast for a PS2 especially with the 387 co-processor.
You can get the battery in most camera shops. You want CR-P2 or ,BR-P2
from Panasonic, Varta, Sony, or DL 223A from Duracell. 6v. -lithium.
Nope, there is a 16, 20 and 25 mhz version, there are also small and large board
versions of the 16 and 20. The boards I have are the processor section of the
entire mainboard and will not work in any machine other than the 25 mhz version.
The boards are also useful if someone needs a 25 mhz processor chip.
You're right on the speed relative to the fact that it's only a 25 mhz 386DX
though. These keep up with many of the low and midrange 486's, when the slower mca
drives are removed and another type installed. The 80 series 25 mhz is/can be much
faster especially with SCSI in it.
The battery for the 50 through 80 series that clips in is a photo battery and I
usually find them at Walmart and Kmart way cheaper than computer suppliers or
camera shops.
3:33 a.m.
IBM has the parts. Might not be considered a 'score' but they have them.
Brian Mahoney
Lance Lyon wrote:
Russ Blakeman wrote:
. Anyone know where I can score the missing parts for this
beastie ? I've got a modem card & a network card & if the thing can reboot
without re-setting up after a power out, I wouldn't mind pressing it into
service as another node on the BBS.
cheers,
Lance
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