Re: Trying to install W95, Dos boot disk not detecting CD ROM drivers...

Posted on 2017-08-23, 02:35

by

by smevans526

in Marvin \ Software

in Marvin \ Software

Dos 6.22 doesn't have native cd-rom support (so no driver). I am a little confused, are you trying to load drivers located on your hard disk? You are probably best off using a win95 bootdisk. I don't know if they all have cd-rom support. A Windows 98 bootdisk definitely would, and the net is …

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Re: Tie Fighter floppy version VESA support (and Pentium)

Posted on 2017-08-23, 01:28

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by smevans526

in Marvin \ Software

in Marvin \ Software

Ok, I got you concerning MCGA. It was the low resolution floppy version that I recall benefitting from VESA. A little off topic, but, 320x200 and 640x480 are not proportional. Did they do some sort of scaling(aka: warped distortion) or cropping for the high res version?

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Re: Tie Fighter floppy version VESA support (and Pentium)

Posted on 2017-08-23, 00:51

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by smevans526

in Marvin \ Software

in Marvin \ Software

Really? So, some of these vintage VESA cards can augment games not specifically written to take advantage of them? Is there more about this on Vogons? I couldn't find anything. Why was MCGA used to describe the floppy version instead of VGA? I always thought the two were equivalent, but incompatible …

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Re: 32-BIT DOS Extenders and EMS

Posted on 2017-08-21, 14:32

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by smevans526

in DOS

in DOS

"When a DOS extender is activated, will it let the game access all 16mb, or only the 10mb from xms/conventional?'' is the question, and clearly asked. No, 'I am wondering if I should boot the system with NOEMS' is not a question, hence why there is no question mark; it's a statement. The answer to …

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Re: 32-BIT DOS Extenders and EMS

Posted on 2017-08-21, 02:15

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by smevans526

in DOS

in DOS

Again, we are missing the point. I am NOT ASKING whether or not I should enable EMS on my system.

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Re: 32-BIT DOS Extenders and EMS

Posted on 2017-08-21, 00:01

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by smevans526

in DOS

in DOS

The question I was asking was in general context, be the system genuine hardware, a virtual machine, emulator whatever. I just got specific with hardware because I was getting answers like only use EMS if you need it. I thought we were missing the point of the question a little and wanted us to …

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Tie Fighter floppy version VESA support (and Pentium)

Posted on 2017-08-20, 18:43

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by smevans526

in Marvin \ Software

in Marvin \ Software

In my youth, I owned the floppy version of TIE FIGHTER. I recall always typing 'VESA' in the prompt before loading, and getting graphical improvements. In fact, I recall I exited the game to type VESA incase I forgot it, because I noticed a graphical downgrade. The difference I recall is a faster …

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Re: 32-BIT DOS Extenders and EMS

Posted on 2017-08-20, 18:30

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by smevans526

in DOS

in DOS

I want to boot with one config.sys, so ideally I always have some EMS allocated for those games that use it. My driver for the Cirrus Logic CL-GD5428 loads with an extender (not a standard one like DOS/4GW; I'll have to check the name when I get the chance). My system has (and I want to reduce it) …

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32-BIT DOS Extenders and EMS

Posted on 2017-08-18, 03:59

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by smevans526

in DOS

in DOS

Suppose my system has 16mb ram, with 6mb allocated to EMS. When a DOS extender is activated, will it let the game access all 16mb, or only the 10mb from xms/conventional? I am wonder if I should boot the system with NOEMS when I want to load such games.

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3.3V 5x86 on 3.45V motherboard

Posted on 2017-08-17, 18:26

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by smevans526

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My first-gen IBM Aptiva mobo seems to support only 5V 486 CPUs, but I want to put a 3.3V IBM/CYRIX 5x86 into it. A possible adapter converts a 5V board to accept 3.45V CPUs. I'd really like to know more about this adapter by TrinityWorks, but can't find anything. So, assuming this adapter's …

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-17, 17:52

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by smevans526

in DOS

in DOS

I stand corrected again. The sheet I cited earlier even specifically states that /H loads COMMAND.COM into "upper"

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-16, 16:41

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by smevans526

in DOS

in DOS

Is controlling the environment size specific to PC-DOS? I was wrong about IBM DOS 7.1. It supports FAT32, which I thought had LFN by default. Oops. Not trying to batter Keropi with PC-DOS 2000, but can't you still overall save memory by loading command.com high? You have no umb, but given ibmdos …

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Re: MPC-2 CD-ROM cable mandatory? MS WINDOWS SOUND SYSTEM card

Posted on 2017-08-13, 16:15

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by smevans526

in Marvin \ Sound

in Marvin \ Sound

For a soundblaster card, is the conversion of the rebook-audio-in to the output passive? What I think I can do is put in some cheap card with the connector, in addition to the Windows Sound System card. I'll then feed the sound into the audio -in of the MS card. No drivers for the sb card, it's sole …

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-13, 03:32

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by smevans526

in DOS

in DOS

UMB on, it takes about 9.5K of conventional. With high and upper off, about 56K of conventional

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-13, 03:22

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by smevans526

in DOS

in DOS

My system has IBMDOS at 15.5K. I am running 2000 as well

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-13, 02:51

by

by smevans526

in DOS

in DOS

Didn't PC-DOS 7.1 have LFN support? The problem there is I don't think there is any convenient way to install it, let alone, find it.

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MPC-2 CD-ROM cable mandatory? MS WINDOWS SOUND SYSTEM card

Posted on 2017-08-13, 02:46

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by smevans526

in Marvin \ Sound

in Marvin \ Sound

I am building a pentium 75mhz machine to play namely sierra sci games built for Windows 3.x (Torin's passage, Phantasmagoria, etc. etc.) Basically it's a Multimedia PC 3 computer. I noticed that their DOS installs support MS Windows Sound System, so for a change of pace, I went for this card. The …

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Re: PC-DOS 7 Memory Tricks

Posted on 2017-08-02, 20:22

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by smevans526

in DOS

in DOS

This article (https://sites.google.com/site/pcdosretro/dosmods) seems to answer my question. On top of the two PC-DOS exclusive commands I mentioned in my first post, EMM386.EXE now has an option MOVEXBDAHI that moves the XBDA to upper memory. I believe that this is the extended bios, but I'm not …

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PC-DOS 7 Memory Tricks

Posted on 2017-07-30, 23:44

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by smevans526

in DOS

in DOS

IBM PC-DOS version 7 was advertised as requiring 'less conventional memory than DOS 6.X versions for comparable function'. (http://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/4/897/ENUS295-074/index.html&lang=en-ZZ) I've used PC-DOS 2000 for about 2 years, and never ran into …

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UNIVBE 6.7 CIRRUS LOGIC ISSUES

Posted on 2015-09-07, 15:01

by

by smevans526

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Dear All, I am using a first generation IBM APTIVA (486-DX2) as my early nineties DOS machine. It uses PC-DOS 2000 and favours a 5.25" Floppy over a CD-ROM drive. Anyway IBM integrated a Cirrus CL-GD5428 on the mainboard (1M of memory). The riser card contains only ISA, so I am stuck with a more …

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