Re: Help me identify this ISA card (RAM/LPT Card?)

Posted on 2021-08-27, 08:39

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think it is great yours works and any info you can supply will help any others who may stumble on one. I found some other information related to this particular Expansion card as a possible part of the IBM 3270 Terminal and add-on adapters (not by number but by 2MB with Parallel port that works …

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Re: Help me identify this ISA card (RAM/LPT Card?)

Posted on 2021-08-26, 20:42

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is very cool! Where did you locate the page frame, and do you know if the card supports 16-bit access to it? (I would hope so since it has a 16-bit card edge and doesn't support extended memory at all) I mapped 64k to 'd000' and 2 pages for DOS (p254=e400, p255=e800). If you don't add a frame …

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Re: Help me identify this ISA card (RAM/LPT Card?)

Posted on 2021-08-26, 15:10

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

More succes! :) I've grabbed XMA2EMS.SYS from the MSDOS 4.0 installation and apparently that also runs on a 8086 (or v30 at least). I searched some more until I found full documentation on how to set it up. Refer to page 90 of this document: http://bitsavers.trailing-edge.com/pdf/ibm/pc/dos/84X1712_ …

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Re: Help me identify this ISA card (RAM/LPT Card?)

Posted on 2021-08-26, 13:16

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If I could find the correct driver for this card somewhere it would probably also work on an 808x. If this is something that IBM came up with for their PS/2 line, chances are that it's preconfigured in the ROM. I'll take a look at my diagnostics and setup disks.. maybe it can just simply be enabled …

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Re: Help me identify this ISA card (RAM/LPT Card?)

Posted on 2021-08-26, 05:49

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I guess this is not a LIM EMS card but rather an IBM XMA card. If it's the latter than you should be able to use this for both extended and expanded memory according to this old Microsoft article: https://web.archive.org/web/20121022062051/http://support.microsoft.com/kb/37242 I've been finding more …

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Re: Help me identify this 8 bit ISA (RAM/LPT Card?)

Posted on 2021-08-25, 19:13

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, given the number, I found this little tidbit of information on vcfed https://www.vcfed.org/forum/forum/genres/pcs-and-clones/26298-need-info-on-16-bit-memory-card-ibm-61x6720 seems to be an IBM XMA / EMS card. possibly 2MB of ram. maybe usable on a 286 using QRAM and/or some DOS v4 device …

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Re: Help me identify this 8 bit ISA (RAM/LPT Card?)

Posted on 2021-08-25, 18:32

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

any chance of a photo of the board without the daughterboard attached ? also back of card & daughterboard :) Sure! Here's the back: https://i.imgur.com/6NdlFpLl.jpg And here's the card without the daughterboard: https://i.imgur.com/JCp52rql.jpg Still can't really see anything noteworthy, though.

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Help me identify this ISA card (RAM/LPT Card?) OR 'Adventures in XMA Memory'!

Posted on 2021-08-25, 13:55

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

EDIT for the unpatient reader: It's a 2mb IBM XMA memory adapter from possibly an IBM 3270 Workstation system. I've had this baby for a while. It came out of an IBM Model 30 8086 but I've not been able to get it to work fully. Neither can I find any specific branding or markings that would help me. …

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Re: Building my own Woodgrain 486

Posted on 2021-08-24, 15:41

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

Nice system and I enjoyed your write up! But... does Doom run with 30fps now?

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Re: Overclocking an IBM PS/2 Model 30 8086

Posted on 2021-08-24, 11:58

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If your system can handle the 25% overclock, the CPU will indeed run at 10MHz. It seems the PS/2 model 30 generates memory timings from the 48MHz clock, too, so the access speed of the onboard memory might limit your overclocking potential. You can desolder the onboard memory (it's just 128K) and …

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Overclocking an IBM PS/2 Model 30 8086

Posted on 2021-08-23, 11:59

by

by Hezus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've been reading up on overclocking XTs and ATs by swapping out the crystal oscillators and I decided to look into the specifications of the IBM Model 30 8086 to see if it could do the same. From what I know, generally XT's use 14.318180MHz crystals, divided by 3 then gives you the base frequency …

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Re: "The B*stard" - an absurd Windows 95 build

Posted on 2021-08-21, 10:15

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

That case sounds cool! Looking forward to the pics! And what's a Voodoo 3300? Or do you mean Voodoo 3 3000?

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Re: DUNE II : Roland MT-32 + Sound Blaster support ?

Posted on 2021-08-17, 05:50

by

by Hezus

in DOS

in DOS

Guys, i've bought Siemens Nixdorf SCENIC Mobile 710 recently, it is packed with ESS ES1878 & ES690F and supports GM in pure dos without drivers. Currently, i'm testing different games and they all work as they should do. But Dune 2 is fighting... First of all, when i select MT32 i'm getting some …

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Re: Athlon Slot A 1000 Voodoo 5500 Project

Posted on 2021-08-15, 17:45

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

So true, it does completely destroy the aesthetics of it. Both Cooler Master and later Lian-Li sold these bay 5.25" bay cover for their line of alu cases. I might try to snatch one up. the musketeer 3 seems to fit in there as well but they are hard to come by these days. Let's hope you can find one …

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Re: Athlon Slot A 1000 Voodoo 5500 Project

Posted on 2021-08-15, 09:11

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

So true, it does completely destroy the aesthetics of it. Both Cooler Master and later Lian-Li sold these bay 5.25" bay cover for their line of alu cases. I might try to snatch one up. the musketeer 3 seems to fit in there as well but they are hard to come by these days. Let's hope you can find one …

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Re: Athlon Slot A 1000 Voodoo 5500 Project

Posted on 2021-08-15, 07:54

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

Lovely system!

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Re: What's better then a Ferrari?

Posted on 2021-08-02, 15:01

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

What are the specs on these puppies?

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Re: My K6-III+ Socket 7 project

Posted on 2021-07-29, 14:15

by

by Hezus

in Marvin \ System Specs

in Marvin \ System Specs

Great system! 😀

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Re: vintage open world games

Posted on 2021-07-28, 19:20

by

by Hezus

in Milliways

in Milliways

Operation Flashpoint from 2001 (now ArmA cold War crisis) comes to mind. You can go anywhere on the island you're on. Terra Nova (1996) had quite big open worlds to0, especially for that time. Even older would be Seal Team (1993). Those maps were big too.

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Re: Retro paradox?

Posted on 2021-07-26, 05:47

by

by Hezus

in Milliways

in Milliways

The answer is pretty simple: we're a bunch of nerds 🤓 Always trying to find out more about the stuff we like.

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