Re: External cache on or off? 256MB SDRAM and 430TX motherboard for DOS games.

Posted on 2020-02-18, 18:26

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What specific dos titles do you have in mind? They are all different. If you disable L1 & L2 cache you should end up around a 386DX40 level of performance

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Re: Weird unknown Xebec ISA card?

Posted on 2020-02-18, 03:18

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SASI, the name of SCSI when Shugart associates ran the show? Generally SCSI-1 and SASI are interchangeable, the controllers for either will usually drive either type of drive.

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Re: CGA "optimal" palette (fantasy)

Posted on 2020-02-18, 03:05

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Something that is never done on CGA but done on a variety of monochrome platforms is to flicker between the two pallets on every vertical blanking. Takes zero programming skill and minimal cpu overhead You would still get 4 colors but they would be brand new (not very good) But not the normal 16 …

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Re: New K6-III+ build with PC Chips M599LMR motherboard

Posted on 2020-02-17, 23:42

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those chipsets overclock to 133mhz easily Worth a crystal change

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Re: Hard drive size limits and cylinders in bios

Posted on 2020-02-16, 19:07

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Large or big mode gets you up to 1gb on many older machines. Oddly 540mb hard drives were very common, much more common than anything 500-528mb, one would hope A machine made post 1990 could use one

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Re: Best imaging software for old operating systems

Posted on 2020-02-13, 03:16

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by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Herne Data systems maxi disk is excellent for floppy disks The proper version of Ghost is great for even non-ibm HD’s in an IBM PC

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Re: CGA "optimal" palette (fantasy)

Posted on 2020-02-09, 22:00

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Digger and the shareware version of Jill of the Jungle had near ideal CGa pallets.

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Re: Upgrading Socket 4 L2 cache to 2048k (ECS SI5PI MB)

Posted on 2020-02-04, 23:59

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the scenario that you have this much cache one would wonder the effect if you could map half of it as base ram

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Re: L2 cache and 386 performance

Posted on 2020-02-01, 21:14

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by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I used to have a very compact 386 board that had a couple kB of cache integrated into the chipset. Made the board suprisingly fast. I kind of regret selling this board because it was such an interesting oddball. I wonder if that chipset would support additional cache? If only I could remember the …

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Re: What is the function of this card?

Posted on 2020-02-01, 21:10

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like an interposer. Some early p60’s needed 5.5volts, the real early motherboard models are hard to find to verify

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Re: Monitor compatible with IBM 8530 (PS/2 Model 30)? Two LCD panels show Input out of Range

Posted on 2020-01-29, 01:25

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

MCGA Is just plain VGA I wonder if the lack of a few key pins is doing it?

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Re: New ATX power supply standard will be 12v only

Posted on 2020-01-28, 04:03

by

by rmay635703

in Milliways

in Milliways

The question is why call this new thing ATX? A unified voltage PSU may as well have a bullet connector or worse an external supply. I’m imagining a humming $5 space heater inside the case. What’s even better is led computer lights will either grow in cost or become incandescent . Seems like a big …

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Re: IBM 5150 vs Amiga 500

Posted on 2020-01-27, 18:34

by

by rmay635703

in Marvin \ Sound

in Marvin \ Sound

Next week C64 vrs SNES

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Re: VGA games with only 16 colors

Posted on 2020-01-25, 14:36

by

by rmay635703

in DOS

in DOS

Games with 640x480 16colors on 286? can't remember these... I had a variety of slow paced games for my VGA equipped Tandy 1000rlx that used 640x480x16 A bunch that also used higher resolution ega modes. Most were card games, “Japanese games” board games, hangman, “learning games”, typing games and …

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Re: Found an online store with multiple VLB ATI Mach64 cards (pricey)

Posted on 2020-01-24, 18:31

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Funny thing is there is1 company that makes new “vintage” graphics cards for about that price. Ah well

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Re: Weird idea: 83mhz overdrive for 386 sx.

Posted on 2020-01-18, 01:01

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IBM Blue Lightning 486slc3 is really the only viable option here. Still would need an adapter and a rare Japanese upgrade to get one.

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Re: What do you drive?

Posted on 2020-01-15, 22:38

by

by rmay635703

in Milliways

in Milliways

A yellow one of these

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Re: VGA games with only 16 colors

Posted on 2020-01-14, 00:37

by

by rmay635703

in DOS

in DOS

Some “256” color games only used a fraction of that but more than 16 I remember well into the VGA ERA 16 color graphics seemed to be a selling point even when vga/ega was on the box https://www.google.com/amp/s/trixter.oldskool … the-ibm-pc/amp/

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Re: ISA Hard Drive controllers

Posted on 2020-01-09, 04:46

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by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I could swear my 5x86 had DMA & EIDE support (pio4) When did udma/ ATA33 come out? I would think a PCI equipped 486 could run a UDMA disk controller I would HOPE a VLB could as well but it was too early

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Re: Cyrix 120+ project

Posted on 2020-01-06, 13:24

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If your using the included version of dos with Windows 95 you don’t need a partician or anything to boot to dos, just keep it all together

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