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May 17, 2025

This article is part of the IBM PS/1 Restoration project series
IBM PS/1 2168 Restoration: Epilogue

From January to April 2025, the restoration of my IBM PS/1 2168-594 took roughly four months. It was fun and I learned a lot in the process.

While checking that box was important, I found it even more heart-warming to interact with the Vogons community where members are eager to share their knowledge and help each others.

The resulting "Beautiful DOOM machine", especially with the DX4-100Mhz upgrade, leans more on the side of a "max-restore" than a restore. Perhaps a more approviate model number now would be 2168-FAB.

This puppy originally ran DOOM at 22 fps. Now it maxes it out at nearly 40 fps.

Before/After

Here is a brief summary of everything accomplished.

BEFORE AFTER
CPU 486 DX2 66 Mhz 486 DX4 100Mhz
RAM 32 MiB -
L2 Cache 128 KiB 256 KiB
VRAM 1 MiB -
Video Cirrus Logic GD5428 -
FDD Broken Flawless
BUS VLB -
HDD WDC AC21600H 1.6 GiB -
HDD WDC AC31000H 1.0 GiB -
Sound Card Pro Audio Spectrum 16 Sound blaster 16 ASP
CDROM Drive NEC CDR-84JD-1 SCSI 2x Panasonic 2x
MIDI - PCMIDI + SC55ST
OS PC-DOS 5 PC-DOS 7

More importantly...

BEFORE AFTER
Rust Lots None!
Doom 21 fps 40 fps
Final touch

For the final touch, I ordered a custom mousepad "Eye"-"Bee"-"M" from VistaPrint since it was strangely not available anywhere.

Final result

Playing with this mouse wreaks my wrist. But you don't feel the pain while you slay imps.

Same with lid opened.

Dealing with cable

Before moving the machine from my workbench to a proper desk, I had to find a way to deal with the hundred of feet of cables powering the central unit, monitor, two speakers, and SC55.

I got a Memorex which helped a lot. It has a master switch to power on/off all elements of the PC with a single button.

I screwed VIVO "Cable Management Trays" under the desk to hide the cables.

Disclaimer: Cat not included with the Memorex.

Final word

Perhaps the only problem with this project is that it opened my appetite. I am quite eager to build a "Beautiful 1997 Quake Machine" now.


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