193-226 IBM PS/2 E (9533) Models Without a Monitor or Display
193-347 IBM PS/2 E (9533-GBD and DBD) and 340MB Hard Drive Option
DIAGNOSTIC AND SETUP DISKETTES: It is an ISA bus system and, like other PS/2 ISA bus systems, does not have a Reference diskette. It has a "Starter" diskette, and a "Utility" diskette which contains, amongst other things, management utilities and drivers for the 4-slot PCMCIA adapter that some models shipped with.
PS/2 E (EWS - Type 9533) HMM
Under Linux (To Peter's Site!)
4 Slot PCMCIA Adapter
Under revision, new discoveries prove the PCMCIA
adapter supports multiple boot sources, and it most
likely designed to be that way...
9507 Color Display (LCD)
4 Slot PCMCIA Adapter
Note: Some Model 35 and Model 40 computers use this system board.
Memory Select Jumper
Adjustable Floor Stand Accessory (P/N 91F1028)
PS/2 E (Model 9533) FAQ
Don Hills posted the original PS/2 E (Model 9533) FAQ on CompuServe. His work provided the base for my adventures with the "Big e".
The PS/2 E (model 9533) system unit has a PS/2
model 35 motherboard. 486SLC2 25/50 MHZ CPU, 4 MB memory
soldered in, 2 sockets for IBM PS/2 style SIMMs (2, 4 or
8 MB), to a maximum of 16 MB of total system
memory. IDE controller, but only enough room
inside for a laptop 2.5 inch IDE drive. XGA-2
video w/1MB of VRAM on motherboard. One ISA bus
slot, depending on the model it may contain:
See: the 486SLC2 processor in the 33 is *technically* a souped-up 386SX. It is an interesting mix of technologies.
- External bus is from 80286: 16 data and 24 address lines
- Internal 16K Level-1 cache is inherited from 386SLC
- 32-bit processor core is compatible with 486SX (no integrated FPU)
- Power-management comes from 386SL laptop processor
- Pin-out and case (PLCC) comes from 386SX
- Additional MathCo is a 387SX-25
- Internal clock-doubling is taken from 486DX2 line
However: because of the 486SX-style core and instruction set it can handle true-32 bit software written for 486 systems. The machine can even carry out 32-bit instructions across the 16-bit data-bus (with two bus-cycles instead of one) - but it still is a 386SX system *technically*.
"Generic" or "industry standard" memory
will not work- it must be "PS/2 style" 70 ns parity
memory. It uses the same memory as other PS/2s of
the same vintage- if in doubt, ask the supplier for
memory for an IBM PS/2 model 56 or 57 or 76 or 77 (8556,
8557, 9556, 9557, 9576, 9577). These were very
common models. I have also used an 8MB SIMM from a
The system reserves .5KB of memory when BIOS/POST is copied to RAM for execution in systems with less than 16MB of planar memory. You will have 15.5MB available when 16MB of memory is installed.
HARD DISK DRIVES: It'll accept any 2.5 inch IDE laptop drive, provided it is not too "high" (thick), as it has to fit under the diskette drive. I think the drives come in 2 common heights- 12 mm and 17 mm- and the space available is only about 15 mm high.
Manager for >528MB
Cable 39G6566 has the right power
tap-off. Laptop IDE drives have the power wires on the
same plug as the signal cable, but the 9533 is "desktop"
IDE where the power is separate. The IBM cable
splits out the power wires to a special connector from
the power supply. The stock IBM
drives can be found here IBM H2172-A2 (172MB),
H2258-A3 (258MB) & H2344-A4 (344MB)
SL Wire-to-Wire Crimp Housing, Single Row, Ver A, 3
Michal Necasek writes:
"Plug-n-Play introduces four PCMCIA slots with
electronic lock and unlock utilities, RIPL and booting
Buried near the bottom of the announcement letter is a
list of bootable devices.
The BIOS DOES have support for the 2.88MB floppy. IBM Thinkpad 720 diskette drive. The 1.44MB floppy is a Teac FD-05HG-263-U or IBM Part 1619640.
Floppy Tape Removal
Note: I had a
strange problem with my floppy. Tried reseating the
tape, no go. I was turning it over, looking for model
numbers, when I heard something rattle. Turns out
somebody had stuck a safety pin in the floppy. So if
small children have been in the area, just remember they
like to stick small objects in anything with a door.
VCRs, Tape decks, Sewing Machines, Computers....
From Don Hills
I installed a Sound Blaster 16-SCSI adapter. The CDROM drive cable ran out of the back of the case to the drive, which I put in an external box with its own power supply. It sits on top of the PS/2 E. Note that the internal power supply in the PS/2 E is 24 Watts. I had to disable the internal speaker amplifiers on the sound card, it was hanging the machine when loud sounds were played. I now use external amplified speakers. Most recent sound cards no longer have internal amplifiers anyway- people prefer external amplifiers to get more power, and control over volume/bass/treble etc.
DISPLAY ADAPTER: The planar video is XGA-2, for DOS/Windows you will need the XGA device driver diskette (latest version is V2.12.)
2401 Error with 512MB CF Card
Michal Necasek ran into a good one:
I replaced the flaky hard disk with a CF card. The CF card works (kind of) but now I get error 2401 on every boot together with nice corrupted display output. I don’t know why anything should happen to the XGA because the drives are in the other corner of the board, and I didn’t take out the PCMCIA card (and video was working fine after I put it back). Sigh.
The CF card works, and if the display isn’t so corrupted that I couldn’t see, I can boot from the CF card. Except the drive can’t be written to. Any idea? Not that it matters much because unless the onboard XGA-2 starts working again, I can’t do much with this 9533
It looks like bad video memory — solid video signal but garbage on the screen in both text and graphics modes. Definitely not a problem with monitor or cable. I already snapped off a pin on a VGA cable, had this problem before with some PowerPC equipment. No issue there, that cable was already working with the 9533 before I started messing with it.
I started pulling things out. It’s completely ridiculous but the 512M CF card I used was causing the 2401 errors. Plugged in a 128M CF card, no more video problems, storage works too.
>Yes - but the XGA-2 driver with Winblowz is for the MCA-version only. The 9533 has ISA XGA-2 and it seems it does not work very well together. I'd managed to get it going under Win95 IIRC ... I deleted the Wincrap from it and installed Linux ...
From Don Hills (looks to be a long thread)
(XGA-2 has 3 "apertures" or direct video buffer access paths: a 64 KB "movable" window below the 1 MB line, a 1 MB aperture below the 16 MB line, and a 4 MB aperture just below the 4 GB line (when in a 32-bit addressing system).
As for hard disk noise, the APM for DOS and OS/2 works
for Dealing with Pin 9 in VGA Port Being Plugged
Huh? Using my super human X-Ray vision, I perceived
that Pin 9 in the 9533's HDD15 port was plugged. IBM
loved to do things to irritate me... Other IBM video
adapters and planar-based video share this annoying
I broke into my war reserves and couldn't come up with
a special pin 9-less VGA cable... I did have a few pin
9-less VGA extender cables, but they were M-F, not the
Option 1: Grab a drill and a drill bit in the #60 - #65
wire size. You don't need a lot of pressure, a light
pressure and you will feel it touching the pin 9
connector when it punches through. Use a slow speed. NOTE: A 1/16" drill bit
works as well....
Rick Ekblaw opines:
The usual "trick" is to take a standard VGA extension cable (male/female) and clip off the pins that you don't want on the male end to create an "adapter" that allows you plug "modern" flat panels or CRTs with 15-pin VGA cables into the older PS/2s, RS/6000s, and other items with "blocked" VGA ports..
At step 4, power consumption is reduced below 8 watts.
4 Slot PCMCIA Adapter (PCMCIA 2.01, NOT CardBus!!!)
Four PCMCIA slots accommodate four Type I -OR- Type II, or two Type III devices, or any combination of the three.
Supports existing IBM PCMCIA 2.01 devices such as 16/4 Token-Ring, Ethernet, 3270, FAX/Modem and Solid State Files.
The PS/2 E supports all PCMCIA 2.01 type devices including:
o IBM Token-Ring 16/4 Credit Card Adapter
o IBM Ethernet Credit Card Adapters (10BaseT, 10Base2)
o IBM 3270 Credit Card Adapter
o IBM High and Low Speed FAX/Modems
o IBM Solid State Mass Storage Devices (5MB, 10MB,15MB)
5MB Solid State Mass Storage Device 7297 70G7344
10MB Solid State Mass Storage Device 7298 70G7345
15MB Solid State Mass Storage Device 7299 70G7346
o PCMCIA hard drives (when available).
Screw for holding the PCMCIA adapter to the frame (ISA bracket) has a 3/16" head.
From Daniel Basterfield
Michal Necasek has probed the PCMCIA Adapter:
There is ROM on the PCMCIA ISA card. Actually three logically separate ROMs:
05/21/93 ICBOT001.IMG PCMCIA Adapter card ROM version 1.01
05/21/93 ICI13001.IMG PCMCIA ATA card driver ROM version is 1.01
03/01/93 ICI19001.IMG PCMCIA Boot Strap Loader ROM version is 1.00
The first ROM contains the strings “SunDisk”, “Maxto” (no ‘r’), and “IBM”, presumably for checking specific devices. I was able to boot off several CF cards in a PCMCIA adapter (500MB, 1GB), a Toshiba 640MB flash card, and a Maxtor MobileMax 105MB PCMCIA hard disk. The PCMCIA drive shows up as C: (BIOS drive 80h), the regular hard disk is D: (BIOS drive 81h).
NOTE: Makes sense the PCMCIA comes first (80h) as that makes a Hard Drive-less 9533 bootable with a solid state drive...
It looks like the ROM can boot at least from PCMCIA ATA devices and Token Ring. Some (but not nearly all) ThinkPads can do that too. I haven’t tested that but I have little doubt that the S3 DIP switch on the PCMCIA adapter (“ROM ADDR”) sets the address where the ROM is mapped. By default it’s C800h which actually doesn’t make much sense in the 9533 since there’s no video ROM at C000h.
I think the problem IBM had was that DOS, Windows, OS/2 installed on a fixed disk have no clue how to deal with anything other than the first BIOS drive (80h). For a successful boot, the PCMCIA-attached drive has to be C:. Which forces the built-in drive to the next available number/letter (81h/D:).
Drivers for DOS/Win3.1x
utte131.exe PCMCIA Device
Drivers for 9533
A problem using the PCMINSTW.EXE (Win
3.1x) program was that it choked trying to rename the
system.ini and config.sys files. How to work around
that- When it asks to make changes to config.sys (and
system.ini) tell it no. Then it will save the changed
files as config.pcm and system.pcm in the EZPLAY
directory (or wherever you told the install program to
Then use File Manager to move the original config.sys and system.ini to your temp directory (safety first) move the *.pcm fles to the correct locations, rename them, dump out of Winblows, reboot, and it should work. Did for me.
The default choice of I/O 03E0-03E1, IRQ
works. Windows will also install Socket Services
automatically. You do not need any DOS drivers
IF the device you are using is visible
under Explorer, but comes up as not ready when you click
on it, try reformatting it. This was one of my problems.
I could see the PC hard drive, used it to transfer W95
setup files, but it would not respond to Exploiter.
Until I reformatted it.
Testing the PCMCIA Adapter
The PCMCIA adapter acts as a bus from the planar to the option adapters.
If the computer has a problem, carefully remove and reseat the riser card, any PC Cards, and the PCMCIA adapter. If, after reseating these boards, you get an 80XX error code, replace the PCMCIA adapter. For any other symptom, continue with the steps below.
If you suspect a problem with the PCMCIA adapter, do
If the PCMCIA adapter diagnostic tests find no problem,
suspect a PC Card option adapter connected to the PCMCIA
adapter. To test the PC Card:
If the PC Card option adapter diagnostic tests find no
Editor's Note: And just trot right over to your local IBM rep...
Note: Before you replace a PC Card, be sure its application software and any required drivers are installed correctly on the computer.
Lock/Unlock PCMCIA Cards
I have disconnected both solenoid headers on my e and have no problems under Win95.
After some switch twiddling, I had to pull
a card out without being able to use the blue buttons
(card was locked). Trying to reinsert the card didn't
work. I looked real close- when the solenoid is in the
locked position, there is a little "finger" that sticks
out to retain the PC card. It's on the guide that has
the eject buttons.
Put the ISA Riser onto the PCMCIA adapter edge connector. Slip the PCMCIA adapter in at an angle so the buttons/card guides fit through the opening at the rear of the case. Now slip the tip of the ISA bracket into the hook and rotate the PCMCIA adapter until the adapter is fully inserted into the opening.
After ensuring the ISA Riser edge connector is started into the planar slot, press down while rocking the riser end to end.
Now secure the ISA adapter with the screw. You can use a 3/16 nutdriver or a standard screwdriver.
9533 assembled with floppy, PSU, and PCMCIA adapter.
NT 3.51 on the Big "e"
I thought this was a twisted joke.
Well, it was not tricky, really. Rather than attach a CD-ROM drive (couldn't figure an easy way of doing that), I simply copied the NT i386 directory to the hard drive, and installed from there - I chose to use a 105MB PCMCIA drive as a big diskette, and created a suitable DOS boot disk. I've swapped the hard drive for a 512MB one, so space is not an issue. I'm using the normal 4-port PCMCIA adapter, but haven't checked (as far as I recall) if all four ports are available. I'd suspect only two ports are recognized.
I've just tried shoving a couple of PCMCIA devices into it, and of course the damn security clips are activated, so I can't. Arse. I haven't had any luck running the DOS or Windows lock Programs under NT. I can't even get the DOS one to run under DOS! at the moment it's only got the PCMCIA t-r adapter in it, and I can't get the bloody Ethernet card back in to prove it was working when I last used it. Argh!
Um, NT 3.51 isn't exactly nippy, but it serves well as a network device.
> are you implying that you are using a PCMCIA adapter under 3.51? Do tell...
Nothing to tell - it saw it, and installed the drivers - the PCMCIA device is started, basically. I'm not sure how to check whether it's running as two instances of a two-port driver, or one instance of a four-port driver, and I can't get any extra cards into it at the moment. I have to say, I get so bloody frustrated with the 4-port card locking the cards away, I have seriously considered slinging the card and just making do with an ISA Digital 2-port 82365sl that I have spare. When I press the 'eject' button, I mean 'eject'... :-(
To be honest, the trickiest bit is remembering that when I apply SP5 to it, it overwrites the t-r adapter driver with a duff old version, so I lose my remote control. Obviously the punishment of having to get a monitor cabled up near it is enough for me to remember that for a week or so... then I forget and do it all again - Doh!
> I suppose I could try 4.0 on my e. As it uses the i82365SL PCMCIA chipset, it might work.
Yup - it will. I recall that NT 4 was using around 24MB with me logged on, and without much configured in the way of services. Thrash! I tried NT 3.51 with the Shell Update - a sort of 3.51/4.0 hybrid, but that Explorer shell ate up the RAM, and only shaved 2MB off the NT 4 memory usage. Still thrashy.
I'll give you any assistance I can with NT on this box. My recollections of the installation are a little hazy, as that was about four months ago, so apologies if any of this is annoyingly vague. The box just runs and runs - it's been rebooted only to move house, and again whenever I pull the wrong power cord. I haven't got it to boot without the keyboard present, so I just leave the space saver plugged in and tucked out of the way.
I suppose I ought to carry on the quest, and get it sorted out. I'll need to shrink the partition to make way for a Win3.1 area, so I can boot that and eject my cards without using a screwdriver. Cleaner, but not ideal.
I did have OS/2 4.0 on it for a while - got really
narked trying to install LanServer 5 onto it - whatever
I did, it refused to play ball unless it could see the
CD. Hmm. The PCMCIA adapter support was a dream,
Opening the 9533
Hopefully, it's unlocked. Who has a key? Open the front cover. See the white latch in the center? (under the black cover latch). Pull up on the white catch while pushing it back (latch is mounted to the frame). Push forward on the case while pushing back on the latch.
Do NOT try to pry the case open at the back! You do NOT need any tools to open the case!
Floor Stand Option (91F1028)
Power supply / floppy / hard drive mount Removal
Look at the rear of the case. There is one standard screw to the upper left of the power socket. Unscrew it. Now you can lift the front of the mount up and pull the entire mount up AFTER you unplug the cables!
First, disconnect the floppy tape connector. Look here
Tip the front of the mount, then pull the HD cable out of the planar.
Look at the left side of the mount. All sorts of cables, eh? The main power leads go into a black connector. Notice it has tabs at each end. Squeeze those tabs inward while pulling the entire connector up. May have to wiggle it some. Also, pulling the mount towards the left side gives you more room to grab the power cables....
Next, there is a white power connector to the left. I just grabbed the wires and pulled straight up. Crude, but it works.
Two HDDs in 9533
Here's a brief description:
-There are a couple of "rails" on the bracket attached to the power supply, I cut the left one down about 1/2 inch to make room for the cables.
-I moved the floppy down to where the hdd was and attached it from the bottom instead of the sides.
-I put the two hdd's on top of the floppy, rotated 90 degrees from original disk mounting orientation. They are positioned PCBs facing up and connectors pointing to the ISA slot.
-I used a generic IDE cable plus two 2.5-inch to 3.5-inch adapters (the kind that let you use 2.5-inch disks in a desktop machine) and a power splitter to get one power plug for both disks. I wired this up to the connection from the PSU.
-I cut off some of the aluminum "fingers" on the inside of the cover to allow access to the floppy in its new lower position.
-Best of all, I left the old FD mounting holes, so I can still go back to the old configuration if I wanted to.
-The PSU seems more than capable of supplying power to the 486, XGA/2, FD, two HDs, and a PCMCIA NIC and modem.