Chromedome45
Veteran Member
Just a simple question about this computer. What is the maximum amount of memory you can put on the motherboard? I thought 1Meg composed of 4 256k 30 pins SIMMS but I may be wrong. Please advise.
Table 2-D. PS/2 Models 30 286-E01/-E21
. . .
NOTES:
* These models come with four system board memory spaces, two of which are
occupied with replaceable 256K SIPs for a total of 512K. One 0.5MB
Feature #3397, consisting of two 256K modules, can be added for a total
of 1MB. Alternatively, the original system board SIPs can be replaced
by one or two of the 2MB Feature #7833, each consisting of two 1MB
modules, for a a total of 2MB or 4MB system board memory. Different
size SIPs cannot be used together on the system board.
* The ability to use a non-IBM memory expansion card in the Personal
System/2 Model 30 286 is dependent on the flexibility of the card in
establishing its starting memory address. To operate properly in the
standard Model 30 286 with 512KB, a memory expansion adapter must
support a starting memory address of 512KB. To operate properly in a
Model 30 286 with 1MB, 2MB, or 4MB of system board memory, a memory
expansion adapter must support a starting memory address of 384KB plus
the amount of system board memory.
From http://ps-2.kev009.com:8081/ohlandl/8530/188-146.txtUnknown_K, do you happen to know the IBM part number for 1MB simms? If please let me know. TIA.
From http://ps-2.kev009.com:8081/ohlandl/8530/188-146.txt
- 512KB standard with parity
- Expandable on the system board to 1Mb using the 0.5Mb Memory Module Kit (30F5348) (#3397)
- Expandable to 2Mb or 4Mb by removing the 0.5Mb memory modules and installing one or two 2.0Mb Memory Module Kits (30F5360)(#7833)
It's all IBM?I tried every 30 pin SIMM I have and nothing seems to work.
The earlier info I gave you says it's "for planar or #8635 - Cannot mix with/#3397". That seem s pretty clear to me. Did you look up the #8635 yet? (note *1)I did find this however:
http://cgi.ebay.com/VINTAGE-SEALED-...tem&pt=LH_DefaultDomain_0&hash=item53d9572960
But the instructions say something about installing onto an adapter board. So not sure if it work on the 30-286's motherboard or not. And I don't want to pay 75.00 for it and not work. He does however have a make offer button. Any opinions about this?
It's all IBM?
The earlier info I gave you says it's "for planar or #8635 - Cannot mix with/#3397". That seem s pretty clear to me. Did you look up the #8635 yet? (note *1)
It sounds like the right thing. It's IBM.I made them an offer and they took it. Will have to wait till I get them in to see if they work. Hopefully they will.
Don't even know what that means! I must be dumb or something. like what is #8635 and #3397?
I hope that's helpful. I also hope you offered the seller considerably less than the retail price which looks like $1295!-------------------------------------------------------------------------------
Table 2-D. PS/2 Models 30 286-E01/-E21
-------------------------------------------------------------------------------
Suggested
Retail Feature Part Memory Memory
Feature Name Price Number Number Std. Max. Speed Description
--------------------------- --------- ------- ------- ---- ---- ------ -----------------
0.5MB Memory Module Kit $215 #3397 30F5348 512K 512K 120ns Modules for planar
or #8635
Cannot mix with/#7833
2MB Memory Module Kit $1295 #7833 30F5360 2MB 2MB 120ns Modules for planar
or #8635
Cannot mix with/#3397
IBM Personal System/2 $445 #8635 30F5364 0MB 12MB 120ns Adapter
Multifunction Adapter *1 Uses #3397/#7833
NOTES:
* These models come with four system board memory spaces, two of which are
occupied with replaceable 256K SIPs for a total of 512K. One 0.5MB
Feature #3397, consisting of two 256K modules, can be added for a total
of 1MB. Alternatively, the original system board SIPs can be replaced
by one or two of the 2MB Feature #7833, each consisting of two 1MB
modules, for a a total of 2MB or 4MB system board memory. Different
size SIPs cannot be used together on the system board.
* The ability to use a non-IBM memory expansion card in the Personal
System/2 Model 30 286 is dependent on the flexibility of the card in
establishing its starting memory address. To operate properly in the
standard Model 30 286 with 512KB, a memory expansion adapter must
support a starting memory address of 512KB. To operate properly in a
Model 30 286 with 1MB, 2MB, or 4MB of system board memory, a memory
expansion adapter must support a starting memory address of 384KB plus
the amount of system board memory.
* There are three AT-bus compatible slots available for adapter expansion.
*1 The PS/2 Multifunction Adapter, Feature #8635 can only be used with the
original 512KB of memory on the system board. Additional memory modules
may be moved from the system board to the PS/2 Multifunction Adapter.
Up to two PS/2 Multifunction Adapters may be installed, providing a
maximum of 15MB of additional extended memory. This adapter does not
support the IBM 3270 Workstation Program Versions 1.0 or 1.1 or the DOS
4.00 expanded memory drivers, but does support LIM EMS 4.0 when used in
conjunction with Above Disc (R) 2.0, which is not included with the
adapter and must be purchased separately (Order Vehicle 5871-AAA/Feature
#5448/Part 30F5448). Above Disc (R) works under PC DOS Version 3.30 or
higher. This adapter also includes one parallel and one serial port.
When two Multifunction Adapters are installed in the same system, it is
necessary to disable the serial port on the system board in order to
achieve full operation of three parallel and two serial ports.
...They are very very picky machines, AFAIK.
If your purchase ends up being succesful please post all relevant details to help other owners of the machines...it'd be appreciated.