VOGONS


First post, by ltning

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And before anyone asks - it's obviously not that fast. I can nearly count the frames. At best it averages at 3-4FPS.

Is this a known bug in 1.0c? I thought that was the "fixed" version, or have I mixed things up again?

This is a 286-20 with zero wait states (from what I can tell) and ET4000AX board of late-ish kind (and a good RAMDAC).

/Eirik

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 1 of 12, by waterbeesje

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You found the fastest 286 in computer history!

Honestly I don't have a clue why it acts like that. Could you try with the non-C version?
It is included in the benchmark suite from Phill 😀

With my own 286 computers I don't have this buggybug. So it must be config specific.

Stuck at 10MHz...

Reply 2 of 12, by ltning

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That's more like it. 6.5 with the 1.0 version.

Did anyone try to call that phone number in the lower-right corner? Maybe we can get a bugfix? :D

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 4 of 12, by ltning

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Hm. Wonder what I'm doing wrong, then. The BIOS doesn't have waitstate settings specifically, but two DRAM speed settings which I have at "Fast"+"Burst".
Anyway 1.0C gives crazy values here. 1.0 gives more reasonable ones. If your 1.0C gives 8.5 and my 1.0 gives 6.5, are those even comparable values?

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 5 of 12, by maxtherabbit

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ltning wrote on 2022-09-05, 15:26:

Hm. Wonder what I'm doing wrong, then. The BIOS doesn't have waitstate settings specifically, but two DRAM speed settings which I have at "Fast"+"Burst".
Anyway 1.0C gives crazy values here. 1.0 gives more reasonable ones. If your 1.0C gives 8.5 and my 1.0 gives 6.5, are those even comparable values?

Not directly, no. But the fact you're getting insane numbers in 1.0C indicates you're "underflowing" i.e. my machine is meeting the minimum speed threshold to display sane values and yours is not.

When running 1.0 vs 1.0C on two of my 486 machines, both machines score slightly higher in 1.0

Reply 6 of 12, by ltning

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So what's wrong with my 286? More wait states than I think? Slow chipset (Citygate)?

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 7 of 12, by maxtherabbit

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ltning wrote on 2022-09-05, 16:44:

So what's wrong with my 286? More wait states than I think? Slow chipset (Citygate)?

Dunno, can you post screenshots of your CMOS setup? I personally don't have any experience with citygate to know what to expect. Perhaps pshipkov will know more

Reply 9 of 12, by ltning

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BIOS screenshots. Not a whole lot to choose from.
Chipset is Citygate D90-272, and I have not been able to find any other or newer BIOS than the one I have here. Doesn't even support EMS :(

ET4000 board is running at turbo bios, 16-bit bios, all the right jazz afaict. It's a Diamond SpeedStar 24; it has no 0WS jumper per se, but I guess one of those "Turbo" modes are just that.

NOTE: Score in both versions of 3DBench is the same no matter if I flip everything ON or OFF on the card.

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The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 10 of 12, by maxtherabbit

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Yeah I'm at a loss. Your settings do look correct but you are definitely under performing. I don't know what "burst" refresh means, what are the other options for that setting? No jumpers on the motherboard at all?

Curious that your 286 board is new enough to rate an AMI Colour BIOS

Reply 11 of 12, by ltning

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Four jumpers. No documentation.
- The one labelled EXCK will of course prevent the system from booting unless I add a socket+crystal
- The one next to the FPU socket I have no idea what does; makes no difference in benchmarks
- The one near the KB port will clear CMOS (confirmed)
- The last one is color/mono display selection

DRAM Access Option is either Fast or Slow.
DRAM Refresh Mode is Burst or Normal.

Maybe I need to make the DRAM refresh interval longer. BIOS won't let me, but I think there are DOS tools to do this.. I used one recently but I cannot for the life of me remember what it was called :(

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~

Reply 12 of 12, by ltning

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Found the dram.com I was looking for. Didn't make a difference in 1.0 (still 6.5), but 1.0c jumped from 57.9 to 65.something.

The Floppy Museum - on a floppy, on a 286: http://floppy.museum
286-24/4MB/ET4kW32/GUS+SBPro2
386DX-40/20MB/CL5434 ISA/GUSExtreme
486BL-100/32MB/ET4kW32p VLB/GUSPnP/AWELegacy

~ love over gold ~