Re: Recommendations for reliable and noisy spinning HD?

Posted on 2022-11-28, 04:24

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Error 0x7CF wrote on 2022-11-28, 03:31: I remember Maxtor drives being remarkably noisy for how modern/large they were. Yeah I've a 2GB diamondmax with a pretty satisfying seek sound

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-27, 23:11

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

feipoa wrote on 2022-11-27, 22:26: The unit is functional, but I'm trying to get more MHz out of it I knew it LMAO Keeping poor sphere in the dark all along

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Re: XTIDE ROM - 3COM 3C509B-C

Posted on 2022-11-27, 23:09

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, well IIRC you can configure the card to provide a 32kB window which would eliminate all this BS Depending on the card and the config program used you can pick which 16KB window of the ROM to use - obviously requires the card to control the high ROM address pins rather than just wiring them …

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Re: XTIDE ROM - 3COM 3C509B-C

Posted on 2022-11-27, 20:05

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What jmarsh is trying to say: It is possible that the 3com card doesn't show you the first half of the ROM chip, but the second half of the ROM chip. That's why you made the copy: To make sure the second half of the ROM chip also contains the correct data. The second half of the ROM chip starts at …

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Re: XTIDE ROM - 3COM 3C509B-C

Posted on 2022-11-27, 19:56

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I feel i selected the entire block of data selected file copy and the paste at 3fff0 i think it was. I program view it and yes there is a second code set further down. Regardless both methods yield the same result (filling with zeros) The first few bytes aren't there but present on the rom. What …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-27, 19:54

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

that's pretty low frequency ripple, you should be good with some regular old 10uf bulk decoupling

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Re: Troubleshooting faulty integrated floppy controller on AT clone motherboard

Posted on 2022-11-26, 13:49

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

How's your desoldering chops? You might want to socket and replace the 765

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX and CUBX-E/L

Posted on 2022-11-25, 15:54

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I may give modifying the BIOS myself a shot in the future. I have a few replacement BIOS chips on the way - will be doing some experiments with hot swaps, boot blocks, and replace this EPA Energy Star logo... I'll definitely bookmark this thread for its useful information! Have fun! In the meantime …

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Re: New find, two ST412/ST506 mfm drives.

Posted on 2022-11-24, 22:54

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'll be happy to send the ebay link to the connectors via DM, but site rules prevent me from posting it openly. Search for "5 Pcs 20 Pin Card Edge Female IDC Connector for Flat Ribbon Cable" on ebay to see the ones I purchased to make my own MFM data cables two years ago.

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Re: DOS C interface to asm function?

Posted on 2022-11-24, 22:51

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by maxtherabbit

in Marvin \ Software

in Marvin \ Software

Just write the function in C, then disassemble it, and you will be able to figure out which parameters go where from it. If not, then I question your ability to write the entire function in assembler in the first place. What? I know full well how to write x86 assembly but basically zero experience …

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Re: New find, two ST412/ST506 mfm drives.

Posted on 2022-11-24, 15:00

by

by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Both the card edge and pin header connectors are IDC - Insulation Displacement Connector - that describes how they attach to the ribbon cable

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Re: New find, two ST412/ST506 mfm drives.

Posted on 2022-11-22, 14:49

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes the twist will be a problem. You can take the back of the card slot IDC connector off and untwist the cable easily enough. As for the data cable, I just bought 20 pin IDC connectors from ebay and made my own

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Re: 512MB cacheable area on Intel 430HX mainboard with AMI BIOS?

Posted on 2022-11-19, 21:03

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can probably issue a command in DOS DEBUG to enter the SCSISelect and enable the ctrl-a prompt. That's how you do it on normal adaptec cards once you've disabled it

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Re: 3 (+3 more) retro battle stations

Posted on 2022-11-19, 18:38

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by maxtherabbit

in Marvin \ System Specs

in Marvin \ System Specs

pshipkov wrote on 2022-11-19, 16:00: So, Max, are you able to run your 3x50 LS C1 system at tightest L2 cache timings now ? I already was, this purchase was for a different system

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Re: New find, two ST412/ST506 mfm drives.

Posted on 2022-11-19, 12:42

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In addition, when using an XT class controller on an AT class system, you must set the CMOS setup to "no hard drives"

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Re: Modern NiCd/NiMh battery replacement that looks the same as the original battery.

Posted on 2022-11-19, 12:39

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, I've seen that mentioned in many places. Still if possible my preference is to have "something" installed. My first PC was a slot1 machine so I don't know what was a common practice at a time of 386s, back then I could only browse magazines and dream of the time I'll be able to afford one :-) …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-11-19, 07:19

by

by maxtherabbit

in Marvin \ System Specs

in Marvin \ System Specs

Received my set of 10x fake ISSI 10ns 128kx8 chips today from the seller linked by pshipkov. Out of the 10 I received, two tested bad in the TL866 SRAM test. The rest good. Which is ok I guess since I really only needed 8, but buyer beware! Are they tested at the 10ns timing as well, or is it a …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-11-18, 19:22

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by maxtherabbit

in Marvin \ System Specs

in Marvin \ System Specs

Received my set of 10x fake ISSI 10ns 128kx8 chips today from the seller linked by pshipkov. Out of the 10 I received, two tested bad in the TL866 SRAM test. The rest good. Which is ok I guess since I really only needed 8, but buyer beware!

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Re: PowerLeap PL-370/T

Posted on 2022-11-18, 19:18

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by maxtherabbit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks! I like that because it shows a more realistic picture of cache/memory performance without averaging the MMX results with the non-MMX ones

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-18, 19:18

by

by maxtherabbit

in Release Announcements

in Release Announcements

SF2 support would be amazing though There is nothing difficult in SF2 support, it is enough just to replace the SBK pawe32.lib library from the Creative development kit with another one with SF2 support. I even tried this and it works without breaking existing code or breaking sounds. But there is …

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