Re: Super slocket-iii and Tualatin p3 1.4 SL657

Posted on 2023-10-06, 07:51

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm surprised of all the problems you have with Tualatin P3s and slotkets. Modded a few Tualatins, Celerons and P3s by isolating one pin and then the bridge. No problems with any of my Slot1-boards: two different Asus P3B-F, Abit VT6X4 and Abit BF6. Slotkets are MSI MS-6905 and some others. Only …

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Re: My DIY sound card replicas

Posted on 2023-09-13, 10:39

by

by dj_pirtu

in Marvin \ Sound

in Marvin \ Sound

I'm buying this: https://www.tindie.com/products/kdehl/simple-gravis-ultrasound-gus-pnp-replica/ But never had GUS PnP so I don't know do I need the wavetable rom or not. I have many Classic and MAX cards and those loads all the instruments in memory every time. I have Orpheus II too and I've been …

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Re: Dual 1GHz Pentium III Coppermine VIA Apollo Pro 133A Build

Posted on 2023-08-23, 08:40

by

by dj_pirtu

in Marvin \ System Specs

in Marvin \ System Specs

Screams for modding to put there P3-S 1,4GHz Tualatins!!

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Re: Super slocket-iii and Tualatin p3 1.4 SL657

Posted on 2023-08-23, 08:36

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Strange, I have modded many Tualatin CPUs and slotkets to work with old Slot1-motherboards. Never had any problems with 133+ FSB clocks.

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-08-21, 11:57

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] and now that QDI takes 50MHz bus speed fully stable (Am5x86 is 3x50) with memory set to 'fastest' in bios! Test it with Doom benchmark. For me, every diagnostic tool was happy, but with doom, i found my 32MB 60ns sticks to be unstable with "fastest" option. Oh yes, I have run Doom benchmark …

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-08-21, 07:51

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got lazy, I'll just use POD in my Asus PVI-486SP3 and Am5x86 on that QDI. BTW, my AT PSU failed, PG signal is 0V but all the voltages seems to be good... Anyway, swapped another PSU and now that QDI takes 50MHz bus speed fully stable (Am5x86 is 3x50) with memory set to 'fastest' in bios! Before it …

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Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2023-08-05, 17:13

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got the POD to 4 volts and it's almost stable at 100MHz but in long term testing it will eventually crash. Bought another one and hoped it would overclock easier but of course with my luck it's the same thing. Won't even boot at 100MHz. I think I'll just give up with these and use at default clocks …

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-07-07, 09:03

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Figured it out, POD has it's own WT/WB pin which is out of the 486 pinout. I think it's intentionally shorted to ground in socket.

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-07-05, 13:44

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No, nothing helps, tried all combinations but WT mode is all I got.

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-07-05, 08:58

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh yes, I remember I have seen that document before but totally forgot it existed. Edit: so the WB/WT pin just works opposite way than with Am5x86/i486DX4WB, I need to swap J11 and J14.

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Re: MSI 694T Pro Award bios?

Posted on 2023-07-04, 10:48

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think I have the Award BIOS if I remember right but not sure, it's been long a time since I booted the motherboard... I need to check that when I have the time.

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Re: QDI V4S471/G locks up with 1024kB of cache [Fixed! Nicer Award BIOS available!]

Posted on 2023-07-03, 16:27

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got myself a Pentium Overdrive 83MHz. Works on this mobo nicely but I can't get L1 in WB mode. WB worked with Cx5x86 and Am5x86 but because there's no jumper instructions for P24T I tried DX4/100 settings but no WB... Anyone?

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Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2023-07-03, 03:14

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just got my first PODP5V83 after long hunting... And of course it won't do 100MHz as I hoped, posts but crash instantly when booting/after boot. Now I'm thinking will I take the road to modify the CPU (original heatsink is long gone anyway) or just keep it that way... By the way, it's missing that …

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Re: SetMul - Multiplier control for VIA C3 / AMD K6+7+8 Mobile / Cyrix 5x86

Posted on 2023-06-30, 11:27

by

by dj_pirtu

in Release Announcements

in Release Announcements

Tried to google but didn't found answer: does setmul work with Pentium Overdrive PODP5V83? ...or I'll just wire my turbo-button to fan sense -pins.

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Re: Jetway OPTI-495SX 3/486WB tuning (386/486 motherboard)

Posted on 2023-06-29, 03:04

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Memory problem solved, needed to raise wait states even if memory is 60ns. Tried Kingston Turbochip (Am5x86/160) and did some benchmarks. And yes, the legend of Opti chipset slow memory access is true. My SiS471 based 486-motherboard is much faster accessing memory with all bios settings set to …

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Re: Jetway OPTI-495SX 3/486WB tuning (386/486 motherboard)

Posted on 2023-06-27, 07:45

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got an great idea, I want to make switch, or switches and connect those to jumper positions by wire and then I can choose which CPU socket (and CPU) to use by switch :D Edit: It didn't post with two CPUs in place. So I'll forget that and leave it as is. Strange thing is that I can't get it to work …

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Re: K6-2/3+ Success on Asus P5A 1.06 - simple mod

Posted on 2023-06-27, 04:34

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I haven't done that cap replacement yet :) By the way, the super strange problem with my P5A was surprise-reboots when idling on desktop. And instant reboot if you are playing midi file. Try to play canyon.mid and see what happens? I'm quite sure all this weird unstability is caused by epic ripple …

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Re: Jetway OPTI-495SX 3/486WB tuning (386/486 motherboard)

Posted on 2023-06-26, 08:17

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I do have a few 486-machines already but just wanted to take the shit out from a "386"-system, just for fun. And yes, CPU has a heatsink. When I run the CPU @50MHz with my old board (which had some other issues) I put a fan to it. So I need to investigate traces of those FSB-jumpers...

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Re: Jetway OPTI-495SX 3/486WB tuning (386/486 motherboard)

Posted on 2023-06-25, 12:57

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Need to check that one again, I think it's just too small to be a PLL. @40MHz it's not slow compared to other DLC-40 systems.

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Re: Jetway OPTI-495SX 3/486WB tuning (386/486 motherboard)

Posted on 2023-06-25, 11:23

by

by dj_pirtu

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here it is. Don't know if there's two different PLL-chips for generating FSB, need to search those. Or, is it possible that Chipset makes the clock, don't know.

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