Motherboard : ASUS ISA-486SV2 Rev. 3.1.

The urge was too great to just let it stay in the store room.. 😁

Started getting down and dirty...

Familiar sights? Hehehe... (I was shocked when I turned around after getting some stuff from another room - was literally surrounded with classic pc parts.)

This casing does not have the turbo button, which I crave so much!
Found another front-end panel with the switches from another old casing.

Luckily I managed to fix it at the 3.5" FDD bay.

Extensive cooling for a 486? I'm just obsessed with it 😁. Always wanted to cool the inner parts. Again, I have selected each fan with low noise. And I also selected the 486 cpu with attached fanless heatsink. Usually the little cpu fans are very much noisy.

After much consideration, I finally stuck with the CT1320 with C/MS chips, plus the MPU-IPC-T. (My P133 already has AWE32 for other needs.)

The finished setup :

By this time, I was too tired already. 😁 Very demanding and tiresome, but ultimately rewarding (or ultimately frustrating, if something goes wrong! 😁).

EDIT:

Both systems share the LCD monitor and the same keyboard via KVM switch. Each has it's own mouse - P133 with Logitech 3-Button Serial-PS/2 combo and the 486 with Microsoft Serial-PS/2 combo mouse.

1. 486

ASUS ISA-486SV2 Rev.3.1
8MB 30-pin SIMMS (8x1MB)
i486DX2-66
Hercules Dynamite ET4000 1MB
Sound Blaster 1.5 CT1320 with C/MS Chips
Roland MPU-IPC-T ----> Roland MT-32
Teac Combo HD Floppy Drive
Matsushita CR-583 8X CD-ROM Drive
Fujitsu 5.2GB HDD with Smart Boot Manager

2. Pentium 133

UNICO VE-501 Pentium Motherboard
Intel Pentium 133 P54C
128MB FPM RAM
Teac 5.25" HD FDD
Sony 3.5" HD FDD
Maxtor 80GB HDD with various partitions and Smart Boot Manager
Lite-ON DVD+RW with TEAC_CDI.SYS, spinning at 4X speed.
Sound Blaster AWE32 CT2760 with Wave Blaster
Music Quest PC MIDI Card -----> Roland CM-500
Gravis Eliminator Gamecard -----> CH Pro Throttle + CH Jane's CombatStick

Audio signals from both systems are mixed by the ART Pro Mixer III (pictured on top of the CM-500).

Both have my favourite Turbo Buttons and both can run ICD & ICE.