Re: VLB with newer chipsets

Posted on 2023-09-09, 18:29

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Having shopped for 486 systems including name brands 1994-1995 I would say pretty much every name brand plastered VESA LOCAL BUS GRAPHICS all over the sales card in front of the machine at the store. So Many name brand 486 systems had VESA local bus. I would agree Most didn’t have a slot. That said …

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Re: VLB with newer chipsets

Posted on 2023-09-09, 18:02

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

VLB was a cludge during a specific timeframe when faster bus options were too expensive and ISA was too slow. A 64 bit 66mhz VLB 2 was developed but nobody adopted it. Even though it was present on boards 1992-1996 it had very little attention after 1993 which really stumped owners of systems with …

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Re: Which of these 3com cards is the fastest for a 486 66mhz? ?

Posted on 2023-09-02, 15:54

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rasz_pl wrote on 2023-09-02, 14:46: HighTreason610 did a long time ago, nothing special its still 10mbit = 1MB/s so no need for faster interface. Pro100’s existed in isa (I thought) you would think one guy would have done it.

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Re: Which of these 3com cards is the fastest for a 486 66mhz? ?

Posted on 2023-09-02, 14:26

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Filename IMG_4358.jpeg File size 167.43 KiB Views 1309 views Has anyone benchmarked one of these?

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Re: Leading Edge Model D non-standard CGA mode

Posted on 2023-09-02, 03:59

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Isnt there one leading edge specific graphical program launcher that came with the system and ran in the proprietary 16 color CGA mode? Could examine it.

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Re: Why did you join Vogons?

Posted on 2023-09-01, 14:49

by

by rmay635703

in Milliways

in Milliways

Joined ogons because the bravenet forums for vdmsound were horrible and we needed a forum to discuss other things as well. I came from the Bravenet forums Uncreativelabs , dejeepbrats dongle removers, Harshbarges game forum amongst others. Got tired of irritating the Raven. I believe I may have …

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Re: Any success on overclocking intel 386DX 33 to 40MHz?

Posted on 2023-08-27, 19:53

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi there, both for ceramic and SMD plastic package processors by intel. Specifically late ones at 33MHz. Any luck overclocking these to 40MHz? Cheers, Some of the very late 386SX chips were easy to overclock to 40mhz (I had a 40mhz PCCHIPS board with a sticker and underneath the window dressing was …

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Re: Best gpu for maxing out a athlon 1400 ?

Posted on 2023-08-17, 20:42

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Good value Win98 Graphic Card. Fx5900 For those with an unlimited budget and brand loyalty Athlon XP 1600+ vs Athlon XP 2100+ for a Voodoo 5 5500

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Re: Upgrading the Oscillator of a Compaq Deskpro 50M (486 DX2/50) processor board ?

Posted on 2023-08-15, 14:03

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

8kb AMD DX4 - 100mhz chips exist. And of course 5x86 chips and Intel dx4 overdrives Ran under clocked these chips will sometimes last years at 5 volts (sometimes not). There are overdrive units that fix the voltage problem Either should be compatible and won’t require overclocking

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Re: Upgrading the Oscillator of a Compaq Deskpro 50M (486 DX2/50) processor board ?

Posted on 2023-08-14, 19:43

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Something doesn’t like being overclocked. Very strange for 1991, not even able to click 33mhz When you move back to 50mhz everything is fine? There used to be strange oscillator speeds 55mhz 60mhz etc, you could try to see if the board will overclock at all. There are also 75mhz and 100mhz …

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Re: Best Graphic Cards for a 486DX4-133 System

Posted on 2023-08-13, 21:52

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Voodoo 3 are cheaper and if you have an oddity you can overclock the pci bus to 60mhz with one. If your not into hardcore 5x86 any period correct PCI is fine, I preferred ones that supported Tsing video and mpeg codecs.

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Re: do 16mb sdram modules exist with 133mhz or 100mhz and cl2?

Posted on 2023-08-04, 19:49

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ram edit: too dark, I'll replace them soon. You got yourself some real unicorns there. 9NS??? , must be early stuff before pc100 was standardized. My PCCHIPS m571 Cyrix with an 83mhz fsb had a 9NS 32mb dimm, it was from 1997 and was not labeled pc100. My guess is 9NS would give you clk3 but who …

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Re: do 16mb sdram modules exist with 133mhz or 100mhz and cl2?

Posted on 2023-08-03, 04:49

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The few 16MB I have are PC100. I can't see why only 16MB, because of motherboard limits? Scan them and post here for the benefit of the community. I remember already in late 1997 that some 32mb dimms wouldn’t work in a VX system, (and virtually all 64mb didn’t work) I don’t know of many mainstream …

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Re: Juko ST OEM motherboard @12MHz and 8087-1 @12MHz - Has anyone else had success?

Posted on 2023-08-03, 02:30

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most at/XT power supplies allow you to trim the 5v rail up and down . If your board doesn’t further regulate the 5 volt rail you could try overclocking the old fashioned way. I have several AT PSUs - none of them allows the user to adjust the 5V rail. Can you give an example for an AT-PSU with …

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Re: do 16mb sdram modules exist with 133mhz or 100mhz and cl2?

Posted on 2023-08-03, 00:54

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Besides proprietary modules for “devices” and video cards you really aren’t going to find much https://www.amatteroffax.com/e037-938.html Ye olde 4mb, 8mb and 16mb sdram was lucky to be true pc66, moderately uncommon , occasionally 5 volt or 5 volt I/o tolerant and many times not Pc (aka Mac or ???) …

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Re: Leading Edge Model D non-standard CGA mode

Posted on 2023-07-31, 23:47

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

copper wrote on 2023-07-30, 19:28: Did anyone ever get this to work? In particular, can you run actual lowres EGA games with the integrated graphics and a CGA monitor? It’s not EGA so it won’t work. If the 8 bit guy decided to support the proprietary 16 color CGA mode you might have one or two …

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Re: Juko ST OEM motherboard @12MHz and 8087-1 @12MHz - Has anyone else had success?

Posted on 2023-07-31, 20:04

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't know of any async solution for 8087. The 287 was redesigned as a slave device to the 286 due to the complexities of protected mode. It could be these boards somehow run the 8087 at 10MHz vs 12MHz. I am not really sure if that is even possible. That is why I am asking. Most at/XT power …

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Re: Juko ST OEM motherboard @12MHz and 8087-1 @12MHz - Has anyone else had success?

Posted on 2023-07-31, 19:51

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

8087’s never overclocked AT ALL for me, not sure if it’s just me or if there might be an async solution for 8087’s just as there was for 287 I don't know of any async solution for 8087. The 287 was redesigned as a slave device to the 286 due to the complexities of protected mode. It could be these …

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Re: Juko ST OEM motherboard @12MHz and 8087-1 @12MHz - Has anyone else had success?

Posted on 2023-07-31, 18:54

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

8087’s never overclocked AT ALL for me, not sure if it’s just me or if there might be an async solution for 8087’s just as there was for 287

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Re: Will the Book 8088 be a future classic?

Posted on 2023-07-26, 18:28

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In my mind Tandy graphics and sound made the most sense on a rig like this since there is minimal additional logic required and then you have both CGA and 16 color support.

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