Re: 3 (+3 more) retro battle stations
Posted on 2023-11-19, 10:27
I ran these tests over 10 years ago and also ran into some graphics corruptions on UUD. What symptoms did you run into on the UUD? Are you running PCI at 1/2*FSB or at full FSB?
Re: Rotating the Chill and Phil midi adapter for a smoother finish
Posted on 2023-11-19, 09:12
Small update to this thread. I continue to pull AWE64 Gold and Value cards out of my systems. Once I got used to proper midi playback, I could not go back to the mediocre sound of any Creative audio card in DOS. I've confirmed on a second system now that the AWE64G cannot use the Chil 'n Phil …
Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?
Posted on 2023-11-19, 01:57
I ran a quick test with the 35 ns SOJ-40 FPM, IC41C16257-35k at 800x600x16M 1280x1024x256c. I had no issue. Temperature of the AT&T 110 MHz rated RAMDAC is only 32 C, with a room temperate of 16 C. Filename IC41C16257-35K.JPG File size 739.07 KiB Views 838 views
Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?
Posted on 2023-11-18, 17:18
Try running MCLK at 65 or 70 MHz. You may need a 110 MHz RAMDAC. There's a Polish seller on eBay selling 35 ns ISSI branded SOJ FPM chips. I bought a few from him which arrived yesterday. I will test them out when my 45 ns DIP Mosel chips arrive.
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-18, 06:59
not able to complete post at 3x60MHz with *any* L2 cache installed, while yours is no problem with that. Your previous message was lacking detail. See your post that I've pasted. I suspect most people would interpret '*any* L2 cache' as 'any L2 cache, regardless of size'. In looking thru my notes, …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-18, 04:44
pshipkov wrote on 2023-11-18, 04:21: About MSI's MS-4144. Was able to get it going at 180/200MHz but with 256Kb level 2 cache only. What change was needed to get it working at 180 MHz? Previously, you said it wouldn't work at all.
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-17, 16:50
The LDO I sourced has a dropout of about 150 mV at 1 A at 25 C, so similar specs in that regard. From a 5 V supply, I am able to adjust the output voltage up to about 4.95 V, which tends to indicate a nominal load of around 600 mA. Sorry, I forget the operating frequency for that load. I ran tests …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-17, 04:12
a solution to the issue with the DMA-based AHA-154X and SXL2 in clock doubled mde was to use BARB instead of FLUSH. It's almost perfect, but if I stress the system using IE5 in win3.11, I will eventually get HDD corruption How would partition get corrupted with Write-Thru cache? Write-Back mode has …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-16, 17:26
The PCB design is new from the ground up. The CPU is actually rotated 180 degrees, but to not much benefit, about the same number of lines cross over. Neat! Yes, I noticed on the commercial units that the PGA132 and PGA168 were rotated by some factor, I think 180 degrees, but I felt it looked …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-16, 09:50
If my memory serves me, I even tried 25 MHz FSB with PVI and still run into the issue. I also tried an assortment of different cache/DRAM modules, brands, speeds, etc. Thus, the likelihood of it being the L2 itself is asymptotically approaching zero. I suspect the memory controller or a memory …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-16, 07:49
From my experience, BARB should work on nearly all motherboards, including the Peak-DM. I've reported on the BARB performance drop somewhere on Vogons - it was very small, in the ballpark of 1-3% in DOOM, if I recall correctly. By the way, a solution to the issue with the DMA-based AHA-154X and SXL2 …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-16, 04:26
This was the first SiS 496 chipset revisions list I had found 10 years ago, from user 5u3: https://www.vogons.org/viewtopic.php?p=143876#p143876 This is probably where you list got its start as well. Is this what the list looks like now? A4: SIS 496 MU, SIS 497 MW B2: SIS 496 NU, SIS 497 NS B3: SIS …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-15, 18:18
Aren't datecodes normally expressed in year/week? So 8th week of 1995.
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-15, 18:17
CoffeeOne, your datecode is on the top right corner. 9508, so more than a year older than my PCB. Maybe pshipkov's datecode is also in this location?
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-15, 10:48
This is nice and concise. Thank you. However, of the dozen or more 386 boards I've tested with a PGA132 SXL2 or DLC, I have always been able to get it working with BIOS options and cyrix.exe. Most of these boards were probably DLC aware, with no motherboards older than 1991. Thus I suspect your …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-15, 09:29
Makes me wonder why SiS 496 NV/NU (rev. B4) datecodes generally went much later than the OR/OT (rev. B5) datecodes. Was there some issue with OR/OT? Were they more difficult/expensive to produce? If I pickup this board again, and my solder paste is still new enough, I may do the chipset swap to see …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-15, 08:21
Ah, right PR, not N#. revision 1.21 with chipset date 96 36 (this is the latest i have seen to date) https://forum.maxiol.com/index.php?s=40b28c41ff688b9a44e3d224e2e859c0&act=Attach&type=post&id=7646 I don't see any numbers on the back nearby the BIOS location on the two boards here. Btw, what you …
Re: 3 (+3 more) retro battle stations
Posted on 2023-11-15, 03:48
CoffeeOne, thanks. i remember looking at this before while trying to make sense of the assembly versions. if you run broader search online you will notice that chipset and motherboard versions are all over the place. there is no apparent pattern. it can be something arbitrary like the fab(s) picking …
Modifying an ATI Mach64 VLB 2 MB into 4 MB card without a memory card
Posted on 2023-11-14, 17:21
I have an ATI Mach64 VLB graphics card. The silkscreen indicates that it is part number 109-27800-10, while the sticker on the back indicates part number 1022780511 502035. Does anyone know if: a) it is possible to transform this 2 MB card into a 4 MB card? b) if yes to the above, which components …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2023-11-14, 14:13
I haven't done much with pipelining, but iirc when I enabled it with the cyrix utility it did give a speed bump. How much of a speed bump? I'm pretty sure I played with pipelining in CTCHIP34, but don't recall it having much of an impact. I guess we need to check the chipset datasheet to see if it …
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