TL;DR: Had a dead Mach32 EISA VGA card. Fixed it. Love it. Kthxbye.
Lo(ooo)ng version:
So I had this supposedly-awesome ATI Mach32
#EISA card which I've never managed to get working. And
#retrocomputing being an expensive hobby, I haven't been able to get my hands on a second one. So I've kept trying .. every time I got a new EISA motherboard.
Until the other day, when I decided to take it apart - again: Brush and clean the legs of the RAM, the BIOS chips, and the sockets. Go hunting once more for hints about how the DIP switches and jumpers should be set. Finding some similar cards on
#th99 (
https://th99.preterhuman.net/), scouring various image search platforms, and consulting the always-awesome
#Vogons forums, the correct settings turned out to be the dumbest: All switches off (or is it on?), and all jumpers off.
For each step in the process I got closer to bringing it to life: Clean RAM pins and sockets: monitor actually turns on (but no image, and still POST error beeps.) Remove rust from one(!) BIOS pin: Monitor on, no POST beeps, and it's testing RAM - but no image. Flipping all the DIP switches: It's alive!
And I must say.. ATI was in a class entirely of its own back then: Excellent software tools for configuration and diagnostics. Great monitor compatibility, with super flexible custom settings *and* onboard EEPROM to store monitor settings - no need to reconfigure on each boot. Even the OS/2 drivers feel like first-class citizens. Good "on-line" documentation. And for all reasonable intents and purposes - pretty much best-in-class performance. Not to mention 8514A compatibility, which saves the day when you're trying to run that odd-duck piece of software for which there are no other drivers. And - same tools for their entire family: From Mach32 ISA, via EISA and VLB all the way to Mach64 PCI.
This EISA-486 motherboard, running a DX50 CPU, gives exactly twice as good VGA performance (in 3dbench 1.0c) as the other EISA VGA I have, an S3 86C924-based board. And if I remove the CPU bottleneck (plop in a 3x-multiplier 5x86 upgrade CPU, running at 150MHz!), I get another 25-30% out of it. On par with some of the best VLB cards I own.
Are there better/faster EISA VGA cards out there? Undoubtedly. I have another S3 86C928 with 4MB RAM, for example - but it's a nightmare to configure and won't play nice with LCD monitors. Is EISA worth the trouble? Well.... Quirks and qualities, right?
Anyway, all is good that ends well. I have a working Mach32 EISA and it absolutely made my day. :)
#Retrocomputing #Retrohardware #Gotnothingbettertodo #Midlifecrisis