Re: vintage scanned manuals

Posted on 2023-01-18, 15:14

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you, they have been added to the corresponding boards. Jetway J-756A https://theretroweb.com/motherboards/s/jetway-j-756a VL/ISA-PB486GRN https://theretroweb.com/motherboards/s/qdi-v4p895grn-smt Digis 486NL https://theretroweb.com/motherboards/s/digicom-digis-486nl Digis 486-GL https:// …

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Re: ALD PCI5433 Manual

Posted on 2022-12-24, 20:52

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anonymous Coward wrote on 2022-12-20, 13:17: Do you have a photo of your NEC board? Yes, here it is.

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Re: ALD PCI5433 Manual

Posted on 2022-12-20, 10:09

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've yet to find the ALD counterpart which this one was copied from. The one with a known datasheet (the 93C488) doesn't electrically match mine.

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Re: Looking for archived files for Soyo SY-029B2

Posted on 2022-12-19, 10:01

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Board page was created, looking forward to any new info on it. https://theretroweb.com/motherboards/s/soyo-sy-029b2

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Re: ALD PCI5433 Manual

Posted on 2022-12-19, 09:42

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is at least one other single chip 486 design, from ADC, with a "NEC" marked ADC004 chip (I have my doubts that's a genuine NEC part). https://theretroweb.com/motherboards/s/adc-adgw2 Unfortunately, this one is even more rare than any of the ALD boards, I don't know of anyone else besides me …

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Re: All My Machines!

Posted on 2022-12-13, 17:10

by

by computerguy08

in Marvin \ System Specs

in Marvin \ System Specs

I do. How can I help? Wow, it's been a while, I even forgot I made this request and the specifics behind it :D Anyway, here is the TRW page of the board https://theretroweb.com/motherboards/s/joindata-systems-g486hvl As I'm writing this, there is not much known of it, no BIOSes, no manuals, not …

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Re: ALD PCI5433 Manual

Posted on 2022-12-08, 18:06

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you both so much for this info, I made a new page for the board on TRW. https://theretroweb.com/motherboards/s/ald-pci5433 Is it possible to have a BIOS dump for this board (either one, both ideally)? These ALD boards are ultra-rare, anything related to them helps a lot. Thanks ! I think some …

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Re: I need help indentifying a blown IC on ABIT VH6T

Posted on 2022-11-28, 11:41

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, that's a 7404 hex inverter And the "F" is likely important. The 7404 and 74F04 implement the same logic function (hex inverter), but the "F" variant is way faster. Vastly simplified, but usually good enough to understand 486 boards: You can use a 7404, a 74LS04 or a 74HC(T)04 at ISA speed, and …

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Re: I need help indentifying a blown IC on ABIT VH6T

Posted on 2022-11-26, 10:31

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, that's a 7404 hex inverter

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Re: PC Chips 754LMR+

Posted on 2022-10-13, 22:58

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Afaik, GFX Pro is an Aladdin rebrand.

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Re: Diy VL bus

Posted on 2022-09-17, 09:29

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It would make more sense if you retrofit another 486 LPX board inside that Gateway, which actually has a real VLB slot on the riser, rather than struggling to tap into the CPU socket with adapters and make an unstable mess.

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Re: Intel Socket 4 motherboard missing parts mystery

Posted on 2022-09-13, 09:57

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The missing resistor is used for the slow fan header. Owner of that 2nd image board on TRW 😜

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-26, 09:38

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not all processors have internal pull downs. This is a misconception. I thought we were talking just MMX usage on a Socket 5 board. For others it will be different obviously. I’m pretty sure that Mmx is one of the ones missing a pull up. Above in a previous reply you said it was. Yes, I even said …

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-25, 23:22

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sphere478 wrote on 2022-06-25, 23:19: Not all processors have internal pull downs. This is a misconception. I thought we were talking just MMX usage on a Socket 5 board. For others it will be different obviously.

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-25, 23:16

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Given that it has an internal pull-down, it may not necessarily end up as 5V after the initial resistor mod (resistor ladder gets made), but it's better to play it safe. You can tell I'm very used to working with 5V TTL circuits 🤣

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-25, 23:12

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sphere478 wrote on 2022-06-25, 20:19: The pullups on the bf Are designed to be pulled to vcc3 not vcc5. 5v may fry the processor. Ah yes, you are right, I forgot that aspect. Supposed to be 3.3V not 5.

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-25, 15:36

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sounds simple enough right? I just gotta solder a resistor to the BF0 pin on the back of the motherboard? Where would I have to solder the other end of the resistor to (sorry for my confusion) Just find any pin on the motherboard which supplies 5V. If not sure, you can grab 5V from the Keylock …

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Re: Error_Too_Many_Edits.

Posted on 2022-06-24, 16:30

by

by computerguy08

in Milliways

in Milliways

You are actually the second user who has run into it (except the purgers) (the other was the Ultimate Retro guys who wanted to update all the links/URL's in their previous posts). I haven't even touched my old posts with win3x links, have been too lazy to do it :P And just thinking of the amount …

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Re: Getting rid of cigarette smell from cables

Posted on 2022-06-24, 15:34

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK, I spoke too early. It was smelling very nice when I went to bed last night and I woke up to find that the stink had returned in the morning.. So the vinegar (in at least 4 hours) did not manage to kill the smell :( I'll go to Rossman today and look for one of these odor killing sprays and see …

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Re: ALR Evolution V ST (Socket 5) build

Posted on 2022-06-23, 15:03

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

After fiddling around for many hours with this motherboard I think i’ve come to the conclusion this motherboard only goes up to 2x multiplier as it is … if I want 3x i’m gonna have to do some modification, but i’ve seen people modify their CPU to do the proper multiplier.. how is that done? This is …

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