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Re: Is Cache Tag size to be seen as minimum or exact value

Posted on Yesterday, 17:47

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It used to be that tag ram size determined your cachable area regardless of how much cache was installed. Your board has an exact ratio but the only way to know for sure would 1. Determine that the larger tag has exactly the same pinout 2. Test, it’s possible that your board will just ignore the …

Re: Help identifying my 386 board?

Posted on 2020-07-07, 03:18

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Odd matches this but the pic is totally different https://stason.org/TULARC/pc/motherboards/A/A … 1-TAM-40-U.html

Re: IBM 286 Alternative.

Posted on 2020-07-04, 19:46

in Marvin \ System Specs

in Marvin \ System Specs

That's pretty similar to mine, a soldered 386SX 40MHz with no option for cache. It can barely run Wolf3D it's great! It's got 4MB of RAM though which hasn't been a problem so far. I added a Sound Blaster 2.0 with CMS chips so it's a solid Slow DOS machine. Never could understand the point of all …

Re: 386SX board identification

Posted on 2020-07-03, 17:17

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That looks very similar to a DTK motherboard, it’s missing the dipp sockets and my board at least had an Intel chip not AMD. That Acer chip is confusing me, that board might be an OEM . Be interesting to find out As an FYI, I owned a Vertex computer, from what I know they were a medium sized …

Re: EGA card -> MDA Monitor

Posted on 2020-07-03, 14:32

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What software actually uses EGA mono? Can it emulate something else using a TSR?

Emulating Tandy graphics on VGA 1000RLX

Posted on 2020-06-28, 20:50

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just curious, since my rlx already has Tandy sound is there any way to emulate TGA graphics so the games will actually use it? I’ve seen mention of a TGAemulator for VGA but never went too far since it looked like 386+ Thanks

Re: x1.5 multiplier on 486 boards?

Posted on 2020-06-26, 20:15

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I never had any Luck overclocking DX2-66’s SX2’s yes SX-25 -> 40mhz yes DX2-50 -> 66mhz Yes I actually had trouble getting a real dx2/80 operating at proper speed stable but the dx4’s/120 ran fine on the same board Go figure

Re: 386sx25 on vlsi 311 Mainboard overclockable to 33MHz?

Posted on 2020-06-26, 20:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You never know, I had many 16mhz 386SXs that came factory overC locked running 33 or 40mhz in a small late model AT motherboard very similar to yours. ISA Bus overclocking via divider only works if your motherboard has settings to change it, I found it very effective if you have onboard IDE/serial/ …

Re: Duke Nukem 3D on a i80386

Posted on 2020-06-26, 16:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I played Duke 3D on an IBM Eduquest 386slc-25 with full mwave sound and it would go from quite smooth and playable to jerky I had to disable sound because if too many sounds played I would get a hard disk crash and had to reload the OS. I sort gave up on it after the 2nd crash even though everything …

Re: What is your weirdest troubleshooting experience when dealing with retro computers/hardware?

Posted on 2020-06-24, 16:54

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I’ve had several motherboards where the act of loosening one screw holding the board to the case made it post and run stable

Re: Strangest modem ever... with hardware wavetable.

Posted on 2020-06-24, 01:31

in Marvin \ Sound

in Marvin \ Sound

Most of the MWAVE sound cards I’ve noticed are also modems. Lots of crystal sound and modem combo cards as well

Re: Strangest modem ever... with hardware wavetable.

Posted on 2020-06-23, 20:28

in Marvin \ Sound

in Marvin \ Sound

Thanks for posting about this. I love weird cards like this. I found and bought the other one that was listed :-) I wonder if it was originally meant to hook up to a separate front panel or rear panel connector with an amplifier built-in. Many generic computers came with this device. Including one …

Re: Modem usage

Posted on 2020-06-22, 11:07

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the US there is still a rather large number of folks with strictly dialup. What’s more unfortunate is even on rather terrible modern lines the so-called ringer limitations no longer apply and 128-256k over dialup could be possible for the rural folks and laggards alike despite the law limiting …

Re: Choosing 286 motherboard

Posted on 2020-06-22, 02:58

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Never seen a 286 board with a coin cell. Every one I've had has used a 6V lithium on the ext battery header or a barrel battery Ex-Kwik Trip Harris 25mhz white box low profile units had an ISA RISER, decent modern bios, good vga onboard and a coin cell, some of these units took 72pin Simms which …

Re: How much slower and resource intensive is Windows 98SE vs Windows 95C?

Posted on 2020-06-20, 20:37

in Marvin \ Software

in Marvin \ Software

Reshell 95a into 98se using 98lite for the best of both worlds

Re: Connect 8bit ISA card to a 16 bit ISA slot?

Posted on 2020-06-18, 17:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If the card doesn’t have chips in the region where it would contact you could just saw the “end” of the 16bit slot off and it would slip down inside You would need to ensure nothing shorts out

Re: Help setting up a new processor on an old IBM Aptiva 2134-440

Posted on 2020-06-18, 03:48

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That has gotta be the dumbest way I’ve seen a clock multiplier described Anyway no worries if you find a Pentium classic 166mhz just set for 2/5 which is a 2.5x multiplier On Pentiums of that vintage I have never seen real damage from setting the multiplier wrong, maybe no post if you overclock too …

Re: New retro computers

Posted on 2020-06-16, 20:25

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Time to run memory maker and maybe get rid of some stuff in your autoexec for dos

Re: How were old games made

Posted on 2020-06-16, 20:12

in Marvin \ Software

in Marvin \ Software

https://groups.google.com/forum/m/#!topic/rec … mer/cN3rv9-QB24 http://www.chrismcovell.com/secret/weekly/Sta … omputer_p2.html

Re: Can you I.D. This 386 motherboard ?

Posted on 2020-06-13, 03:04

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like a pcchips m396 with a made in America logo

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