Re: Motherboard cache error checking software [386]

Posted on 2019-01-25, 22:49

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could be a mechanical issue (dead via or something). I have one pentium board that is unsable when cache is enabled and on it I replaced all the chips pretty much and it still exhibits the issue while on the donor board the chips of the original board work perfectly. One day I'll make an attempt to …

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2019-01-25, 22:44

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

I don't have that game to test the card with (it isn't the type of game I would play). Corrupt sounds on FM indicate too high chip access speed normally. OPL3L in the YMF721 uses ISA wait state generation signal and in theory will exclude too fast access problem. I'll have to look into sourcing the …

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2019-01-25, 21:31

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

There's no formal order page or anything, everything has been via e-mail and PMs. I can tell now that cost is going to be 95€ + shipping. Eventually I'll look more into web side of things and attempt to make an order page (I very much hate web stuff lol). New board has analog side routed, only …

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Re: Oak Technology video card stuck with 16 colors :((

Posted on 2019-01-25, 04:52

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is a vanilla VGA card, it cannot do 256 colors in 640x480.

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Re: Goldstar 16-bit ISA multi I/O PC controller card, model IDE Plus V3L, 002.

Posted on 2019-01-24, 19:24

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Such a motherboard has an onboard SuperIO chip and all accesses to things like Floppy, COM and LPT get forwarded to that instead of ISA device. There's likely onboard PCI IDE and any access to the (primary) IDE goes straight to that and not to ISA bus. So end result is such a card isn't useful on a …

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Re: Goldstar 16-bit ISA multi I/O PC controller card, model IDE Plus V3L, 002.

Posted on 2019-01-24, 15:13

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

These chips only give base hardware and require no special drivers. Windows will see the IDE, floppy, COM, LPT and gameport without problems. And I very much appreciate the scans of the manual earlier in this thread ~

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2019-01-24, 04:06

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Yes, 25 boards are going to get made. I'm currently routing the final version and it'll take several more days before it is done. That's a software limitation of SETUPSA, all YMF71x chips have two IRQs referred to as IRQA and IRQB and they can be wired to WSS, SB, MPU401 or OPL3 without limitations …

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Re: Doom vs Heretic VGA performance difference

Posted on 2019-01-19, 16:04

by

by Tiido

in Marvin \ Video

in Marvin \ Video

Overclocked ISA significantly improves performance, but you'll have to be careful with some stuff like AWE64 which sooner or later get their PnP EEPROM corrupt (happened to be at 12MHz ISA). I was using a TVGA8900D, it also ran at 16MHz but occasionally showed corrupt graphics so not completely …

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Re: Comment on -12v in 486 mobos?

Posted on 2019-01-19, 10:57

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It shouldn't be used by anything else but COM ports if they're onboard.

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2019-01-18, 19:34

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Nobody has written anything yet to my knowledge.

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2019-01-17, 17:43

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

http://www.tmeeco.eu/TKAYBSC/NewPartsArrived.jpg http://www.tmeeco.eu/TKAYBSC/NewBrackets.jpg I have some goodies :D The brackets look amazing, the photo I got from my friend suggested some normal grey steel with hand filed holes or something but these look like actual laser cut stuff on nice …

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Re: PS/2 ports (mouse and keyboard) stopped working.

Posted on 2019-01-17, 16:33

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Check if L3 and L18 conduct, they're likely to blow out before the fuse does in case of overcurrent.

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Re: SB Pro emulation freezes on Yamaha YMF7xx-based ISA cards on faster machines

Posted on 2019-01-17, 10:30

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Ok, seems it is 8bit 22KHz in Dsound for whatever reason. That's definitely some sort of driver related problem. Actually I now remember that in Winamp I had to use secondary buffer or some related option when using Dsound for proper output. I never had issues in games though.

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Re: 32MB showing up as 8MB

Posted on 2019-01-16, 19:46

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Pentium1 chipsets are very picky with the SDRAM sticks, amount of chips and their density matters. I'm not sure what exactly these chipsets expect, I try random sticks from my stash until I find a combination that works.

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Re: SB Pro emulation freezes on Yamaha YMF7xx-based ISA cards on faster machines

Posted on 2019-01-15, 18:17

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

You can get the latest drivers from my site also, I have only used those and never got any problems with DirectSound or WaveOut in any programs I have used. It would be interesting to hear the sound you get, bad SNR I think of hiss and not any buzzes and whatnot which can indicate buffer underruns …

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Re: The best 4:3 monitor?

Posted on 2019-01-15, 17:40

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In ambient light conditions it is true, the black is as black/grey as the non-lit surface in/on the screen but in sufficiently low ambient light you will be able to get actual blacks on a CRT where no photons are emitted. Secondary emissions from shadow mask itself do lower contrast around bright …

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Re: SB Pro emulation freezes on Yamaha YMF7xx-based ISA cards on faster machines

Posted on 2019-01-15, 17:22

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

I haven't experienced any such stuff with the YMF71x cards, though I have had issues with VIA chipsets but only when using DMA0 and then it is just no sound at all rather than something else. Maybe you can try with SETYMF and see if it makes a difference, you can find it here : http://www.tmeeco.eu/ …

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Re: Piggybacking keyboard controller chips.

Posted on 2019-01-15, 11:12

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That sooner or later depends on chip manufacturing specs, and is measured in seconds in worst case and minutes in best case. It isn't hours or days, you'll see both chips get very hot very quickly and one will give before the other with a great likelyhood both will (and permanently at that). If …

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Re: Piggybacking keyboard controller chips.

Posted on 2019-01-14, 21:23

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Piggybacking is likely going to destroy one of the chips sooner or later, you cannot connect two outputs together without harming both. Lifting VCC pins isn't gonna do any good either, then the chip will power itself up via ESD diodes on the signal pins and that will damage whatever drives those IO …

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Re: AppleColor composite monitor IIe discoloration on the corners

Posted on 2019-01-14, 09:54

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Degaussing operation after power on (that thunk sound) should fix such things. This is caused by magnetization of the mask in the screen or nearby magnetic field (i.e from non shielded speakers). Sometimes you need to power on the monitor several times (with few minute breaks) to fix that. Also …

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