Re: Fixing CT-6BTM0 motherboard - C0, C1 and then ambulance alarm

Posted on Yesterday, 12:21

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

One looping long "beeeep" is common POST alarm code for RAM problems, but in your case there's a complete "concert" after. I've never heard such a strange sounds from PC-speaker on failed booting motherboard.

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on Yesterday, 10:08

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This should be easy to test: Remove all cache chips, the TAG chip and any inserted COAST module. The system would start without error - IF cache was the problem. I almost forgot. Here it is the only COASt module that I have. SMART IN364TCSP83YG15, 94V-0 with two Sony CXK77W3211Q-12C SRAM chips and …

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Re: Soyo SY-5TC2(U) socket 5/7 motherboard with RAM or cache issues

Posted on Yesterday, 09:34

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by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, I think I found something after the second inspection with magnifying glass. It is in SIMM slot 1, Bank 0. Surprise - two bent pins. These were really hard to spot: SIMM1 two bent pins.JPG I'll straighten these bent pins with fine tweezers. But now I'm wondering why the board wouldn't boot and …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 22:10

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

JP 2 and JP29 are set correctly. Your board has no voltage regulator, so the chache chips run at 5V. What about jumpers 4, 20, 16 and 17?? JP4: 1-2 JP20: 2-3 JP16: 1-2 JP17: 1-2 JP24: open (default) JP2: open JP29: short I think these are correct settings for 256 kB cache in write back mode. Can …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 18:46

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you thoroughly inspected the board for any damage? It could be a cut trace or a shorted pin on the Intel 430FX chipset (much like the 3DFX Voodoo chips which always seem to get squished together). Yes, I've inspected it with magnifying glass after the first cleaning and I didn't notice any …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 17:01

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you very much for this info, majestyk ! Do you remember what version of Award BIOS is on your board? I see that your mobo has no cache installed, but JP1 (the manual says that JP1 is identical to JP2) and JP29 are reversed according to my board's settings. At first look my version of SY-5TC …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 16:15

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hopefully the wrong coast stick wasn’t installed causing board damage. But usually the wrong stick will short stuff out. The board came to me equipped with UMC SRAM chips for 256 kB cache and TAG. I think this is factory configuration. What if the JP1 for 3.3 V and JP29 for mixed voltage 3.3 and 5 …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 06:56

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This should be easy to test: Remove all cache chips, the TAG chip and any inserted COAST module. The system would start without error - IF cache was the problem. Yeah, I also thought about this kind of test, but I have only one 256 kB COASt module and I don't remember with what model s.7 mobo it …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-31, 06:22

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by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Because the BIOS hangs very early during POST step C6, it is still executing code in the bootblock which has only very basic video support. Did you try an ISA VGA card, to see if any error messages appear? I found this TRW blog page with some detailed information about Award BIOS versions POST …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-30, 19:22

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Your Rev UA0 BIOS checks out fine, so no corruption there. I see on TRW that there are 2 BIOS flavors for this SY-5TC board, one with a 2A59CS2 L C BIOS-ID and the other has 2A59CS2 P C. Your UA0 BIOS has the later and looking at the picture of your board I see an UMC UM8669F super I/O chip. The …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-30, 15:41

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have this board (in fact it was my first PC motherboard after coming from an Amiga 1200) and I never heard of this board having an AMI BIOS. Soyo always seemed to use Award and the 5TC is compatible with EDO. I would suggest flashing one of the Award bioses and see how you get on. Thanks for the …

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Re: Socket 5/7 motherboard and 72-pin Fast Page Mode SIMMs compatibility...

Posted on 2024-05-30, 15:38

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I’m sure this 430FX board supports FP-SIMMs just fine. Maybe the SIMM slots have a bad contact due corrosion, or a trace between these slots and the chipset is damaged? This behaviour can also be caused by a corrupted BIOS. Can you make a BIOS dump with your EEPROM programmer and post it here? I …

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Soyo SY-5TC2(U) socket 5/7 motherboard with RAM or cache issues

Posted on 2024-05-30, 08:55

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have one version of these Soyo SY-5TC motheroards: https://theretroweb.com/motherboards/s/soyo-sy-5tc . It is with Intel 430FX (Triton I) chipset and thus it lacks any support for SDRAM. When I try to boot the mobo with Pentium P54C 100 MHz (3.3 V) and two Fast Page Mode RAM 72-pin SIMM 16 MB …

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Re: Rendition Verite Thread

Posted on 2024-05-28, 16:18

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by analog_programmer

in Marvin \ Video

in Marvin \ Video

MSxyz wrote on 2024-05-28, 16:06: No. I've tried. The board is not recognized I see, so it's only meant for older V1000 cards. I have to dump my QDI Legend Verite V2200 AGP card's BIOS (maybe NSSI will be of use here) to see what version it is, just to compare to yours.

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Re: Rendition Verite Thread

Posted on 2024-05-28, 15:52

by

by analog_programmer

in Marvin \ Video

in Marvin \ Video

Is the DOS o'c tool MCLK.EXE compatible with V2x00 cards?

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Re: Rendition Verite Thread

Posted on 2024-05-28, 06:40

by

by analog_programmer

in Marvin \ Video

in Marvin \ Video

Is there a way to flash a modified bios with higher CPU frequency? Just a suggestion: if there is an original BIOS dump file from V2100 card (for example Diamond Stealth II) and a BIOS file for upgrading the very same V2100 card to V2200, maybe it would be possible to find out which bytes are …

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Re: Socket 7 build freeze at splash screen.

Posted on 2024-05-18, 05:12

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by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you're trying to use some non-PCChips ATX form card, check the pinout for the connector here: http://m571.com/m571/franczabkar/ps2mouse.htm - this one is for PCChips M571 non-LMR, but must be the same as the one in the M571LMR. The board also has dedicated PS/2 mouse connector near the keyboard …

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Re: Socket 7 build freeze at splash screen.

Posted on 2024-05-17, 18:49

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by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

These PCChips M571(LMR) motherboards use SiS5598 chipset (renamed to something like "TX Pro II") and according to this link: https://www.anandtech.com/show/72/14 the maximum cached RAM is 128 MB which is better than Intel's 430TX chipset cached RAM limit of only 64 MB. I think, such a chipset cache …

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Re: Socket 7 build freeze at splash screen.

Posted on 2024-05-17, 06:47

by

by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have M571 v.3.2A (Elpina branded) which is similar board and it is very picky about installed RAM modules. At least it works well with modified BIOS for AMD K6-III+/2+ with 83 MHz FSB.

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Re: Which BIOS EPROM for Pentium II board?

Posted on 2024-05-16, 05:58

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by analog_programmer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

naujoks wrote on 2024-05-16, 05:49: I have another Slot 1 mobo, which has a MX28F2000P EPROM IC. Could that work here? Probably it may work, but note that MX28F2000P erasing and programming voltage is 12 V.

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