Re: IBM PC/AT 5170 motherboard BIOS image availability?

Posted on 2021-04-15, 17:28

by

by etomcat

in Marvin \ System Specs

in Marvin \ System Specs

Hello, A bit of status update: I have downloaded original IBM BIOS images from the suggested minus zero site and had them burned to EPROMs, but apparently the cut-off motherboard corner must have damaged something since two yellow caps on the board blew upon power-on. Anyhow, thank you for the BIOS- …

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What does NEP-1xT mean on an expansion board?

Posted on 2021-03-30, 22:28

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, I have this old Plus Development Corp. storage controller ISA card, which is marked as NEP-14T near the top edge, so I've always assumed that to mean the model name. But I've just saw a photo of the IBM PC Music Feature Card, which is marked NEP-16T near the top edge, as seen here: http:// …

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Re: IBM PC/AT 5170 motherboard BIOS image availability?

Posted on 2021-03-30, 22:08

by

by etomcat

in Marvin \ System Specs

in Marvin \ System Specs

weedeewee wrote on 2021-03-30, 21:10: http://minuszerodegrees.net/ you might like that site... Wow! Thank you! That site has like EVERYTHING about the IBM PC family...

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IBM PC/AT 5170 motherboard BIOS image availability?

Posted on 2021-03-30, 21:06

by

by etomcat

in Marvin \ System Specs

in Marvin \ System Specs

Hello, I have an IBM type code 6133919 full-sized planar (PC/AT model 5170, 256/512kB system board, year 1985 week 43) which I've always assumed to be destroyed, as the computer breakers cut off a corner (to mark their intent of recycling the huge PCB before I could rescue it). On closer look I …

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Re: *The DOS HP Palmtop discussion topic for users of HP 95LX, 100LX, 200LX and 1000CX Palmtops*

Posted on 2021-03-30, 11:36

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, Whatever happened to that japanese crowd-funded HP386LX design that was supposed to be powered by an AMD 386DX derived SoC? BR: Tamas Feher.

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Re: Unknown Unisys 8-bit card, need help with identification

Posted on 2021-03-30, 11:30

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, > Could that be an AUI connector, the 15-pin one? I don't think so. On most ethernet cards featuring the DB-15 connector, there is a tiny glass "lightbulb" installed nearby. (I think that's a kind of lightning / overvoltage protector?) Furthermore, the presence of Zilog Z80 on board suggests …

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Re: Unknown Unisys 8-bit card, need help with identification

Posted on 2021-03-23, 23:47

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, Thank you all for yours suggestions! Mkarcher's pointing out the importance of X.21 jumpers was super helpful! Now I wonder if this board may have been part of a minicomputer or mainframe releated 2-3 expansion card battery, similar to IBM's PC/3270 or XT/AT-370? I mean Unisys (ex Burroughs- …

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Re: Unisys Aquanta DM/6 II mb manual?

Posted on 2021-03-22, 13:38

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Horun wrote on 2021-03-13, 15:40: Need a better picture of the chips. ... as cannot read the chip labels to see what they are... Hello and thanks for the patience! I've just made some photos with a proper digicam, hopefully these will prove helpful. Thanks in advance!

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Re: Matrox card questions

Posted on 2021-03-20, 23:33

by

by etomcat

in Marvin \ Video

in Marvin \ Video

Hello, You should show us backside photos of the cards because Matrox put the card type info sticker on the solder side of the PCB. (BTW, any PCI-bus video cards are worth preserving nowadays, except maybe the most common S3Trio cards.) Best Regards: Tamas Feher, Hungary.

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Re: *The DOS HP Palmtop discussion topic for users of HP 95LX, 100LX, 200LX and 1000CX Palmtops*

Posted on 2021-03-16, 22:36

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, Does this have any practical significance nowadays? It weighs about almost a kilo / 2lbs. (The HP 100LX Cougar was more or less an early 200LX without Intuit Quicken.) BR: Tamas Feher.

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Re: List of rarest PC soundcards

Posted on 2021-03-14, 19:36

by

by etomcat

in Marvin \ Sound

in Marvin \ Sound

Hello, If you say vintage hardware need to be useful for playing old games to stay relevant, here is an AdLib-compatible "Digicoder Plus" card which can also record and be used for speech processing through SDK docs. BR: Tamas Feher, Hungary. (P.s.: How I wish this card had 9 less serial number...) …

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Re: asrock M.2 VGA card

Posted on 2021-03-14, 12:50

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

> Big question is - can it run Crysis? The big question is - can it mine? (The M.2 slot provides PCIe 1x bus and big 16x cards are sometimes attached there to mine more Ethereum in systems that have ran out of full-size card sockets. Some modern VGA cards can do headless hash-crunching on just PCIe …

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Re: Newly made PCMCIA sound card

Posted on 2021-03-14, 12:37

by

by etomcat

in Marvin \ Sound

in Marvin \ Sound

Hello, The problem with PCMCIA/Cardbus/Expresscard is the very thin and tightly enclosed space for electronics inside the host device, sans active cooling, which leads to overheating, heat induced signal noise and EMI troubles. Futhermore, the fan-out cables need to protrude anyhow and are prone to …

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Re: *The DOS HP Palmtop discussion topic for users of HP 95LX, 100LX, 200LX and 1000CX Palmtops*

Posted on 2021-03-13, 23:00

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've got an HP 100LX and I've always thought it would be neat to have a sort of super PCMCIA card which can do storage, network and sound all in one ... Hello, One doesn't really need external storage since 32/64MB internal upgrades are available for the HP100/200LX through 3rd party and that's a …

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Re: pls help to identify this VGA/EGA graphics card

Posted on 2021-03-13, 22:50

by

by etomcat

in Marvin \ Video

in Marvin \ Video

...Unfortunately there's no info on the back, no FCC stuff (I looked for it) or anything useful... Considering how much radio emissions / interference video cards could cause (think TEMPEST) and how much the american FCC authority and its hefty fines are feared by HW vendors, maybe this FCC sticker …

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Re: My Socket 7 "1997" Project

Posted on 2021-03-13, 22:36

by

by etomcat

in Marvin \ System Specs

in Marvin \ System Specs

Does anyone here know this card? Dual Gameport Quickjoy "QJ" SV-209 8 Bit ISA (1992) This is apparently its successor: Quickjoy SV-210 https://i.ebayimg.com/00/s/MTAyNFg3Njg=/z/oWUAAOSwm8VUtrrX/$_20.JPG Since that QJ SV-210 image is now gone, let me add local photos. (BTW, why isn't every expansion …

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Re: Windows 3.x security

Posted on 2021-03-13, 22:24

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

...Can I block access to Win3.x from dos? (Where dos boots before you type "win" to load Windows) What about Keylock? some old computer cases had these Keylock slots on the front panel. I heard they disable the function of the keyboard through shorting a jumper on the motherboard. I could be safe …

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Re: In this new decade, let us remember the Y2K Bug

Posted on 2021-03-13, 21:53

by

by etomcat

in Milliways

in Milliways

Personally, I don't care what some church bureaucrats decided about when their prophet lived and died hundreds of years after the fact ... Consider then the situation of e.g. muslims. Their calendar is currently in 1442 and their year starts around August. Since most electronics can't accept less …

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Re: what was the last strictly 2d video card

Posted on 2021-03-13, 21:32

by

by etomcat

in Marvin \ Video

in Marvin \ Video

Infotronic IMSGP2000 - 2001 http://vgamuseum.info/index.php/cards/item/710-infotronic-imsgp2000 ... This is the D-Sub (analog VGA ) variant of the Infotronic 2000. This wasn't a general market VGA card however, but optimized for calibrated grayscale image representation in TIFF G3/4 format, e.g. …

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Re: Performance difference between ISA NICs?

Posted on 2021-03-13, 20:57

by

by etomcat

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

> Performance difference between ISA NICs? I can report about 40kB/s with HP 27245 card (ISA-8 UTP Ethernet) in a genuine 4.77MHz IBM XT, using DOS TCP/IP driver. At least the MFM HDD wasn't overwhelmed... BTW, that's one highly cultured card: just a single rotary switch for ADDR with selectable …

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