Re: Need info about Epson SD-621L floppy drive 5.25 ?

Posted on 2020-05-07, 17:00

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AFAIK no early Macintoshes used 5.25 FDDs, except for the "Twiggy" 128K prototypes. Unless of course, if you count the Apple II line as Macintoshes, but that's a whole different animal.

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Re: What is this old hardware ?

Posted on 2020-05-04, 15:07

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The 3rd board looks like to be from a Olivetti M24 EDIT: Nevermind. It looks like it has a NEC V40 CPU, so it can't be a M24 motherboard, as the M24 used a 8086.

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Re: Help Identify Lot of Old BIOS EEPROMs?

Posted on 2020-04-22, 02:48

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Among that stack, the Jetkey chip is just a plain old KBC, can be useful if you've got a old 486 mobo that lacks one... I think I can see a chip with "MR BIOS" written on it, next to the Jetkey. Could be worth a shot trying to find a EPROM reader and dump its contents.

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Re: Will this work? Adaptec 1542CF and Cheetah 10k with SCA-2 80-pin hot-swap connector

Posted on 2020-04-17, 13:15

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ISTM that 10K/15K RPM SCSI HDDs seem to be more fragile, I've had a Hitachi Ultrastar 15K and it didn't work for long before it exhibited the same symptoms (click and whirr before failing altogether). Some SCA80 drives may need some jumper adjustments to spin up... iirc in servers they were set to …

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Re: IBM / WD WDS-3160 SCSI drive termination

Posted on 2020-04-17, 13:02

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If your SCSI cable has another connector, you could put the terminator on the connector after the hard drive, I have not yet tried this so YMMV.

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Re: MFM hard disk problem

Posted on 2020-04-11, 00:31

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You could try doing a low level format of this drive, usually you will need to boot on a DOS floppy and type in "DEBUG" then "G=C800:5" to invoke the LLF utility in the card's BIOS. This will of course destroy all data on the HDD...

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Re: Will this work? Adaptec 1542CF and Cheetah 10k with SCA-2 80-pin hot-swap connector

Posted on 2020-04-11, 00:29

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes it should. SCSI is usually backwards compatible. Just make sure that the SCA adapter that you're getting has ID jumpers and termination resistors on it.

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Re: CT2890 Vibra 16s Jumpers

Posted on 2020-04-03, 03:00

by

by Vynix

in Marvin \ Sound

in Marvin \ Sound

A pic of the front bracket will probably help. As for the PSU parasiting everything else, yes I've had that happen too, with a SB PCI 128 (bleh), it was for some reason overly sensible to the electrical noise from my PSU, swapped it for a CT4180 (still bleh but at least it's ISA and doesn't need a …

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Re: CT2890 Vibra 16s Jumpers

Posted on 2020-04-02, 17:29

by

by Vynix

in Marvin \ Sound

in Marvin \ Sound

AFAIK RSPK_EN sounds like it's for toggling the right channel. Not sure about what JP3 does, probably worth trying moving JP3 around to see what it does.

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Re: The XL-7 TURBO 8088 XT build

Posted on 2020-03-27, 21:29

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes should work, though you may run into some problems with the BIOS not handling well the 1.44M FDC 😀 The IDE port won't work, obviously, but that doesn't really matter.

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Re: Suggest a beige 5.25" bay device?

Posted on 2020-03-27, 21:27

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Perhaps one of those 5.25" Bay speakers that were... Well, weird.

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Re: Does anyone know this pc's name

Posted on 2020-03-27, 18:37

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The ribbon cables just look suspiciously similar to the cables used on 68K Macintoshes (such as the LC "Pizzaboxes" ones). Though the vents on the sides... They're throwing me off, I can't quite nail what this one would be.

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Re: A new covid lockdown project - help if you can

Posted on 2020-03-27, 18:34

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It should be a matter of popping it in (though you may have to do some tweaking, myself I don't remember very well what you need to do with the jumpers), then install the drivers... Which can be found here: http://vogonsdrivers.com/getfile.php?fileid=372&menustate=0

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Re: The XL-7 TURBO 8088 XT build

Posted on 2020-03-25, 17:40

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some CGA cards (such as the stock IBM CGA card) had a CVBS (composite video) output, if you have a TV that is old enough to have a composite input (practically any random TV could work), it's not going to be pretty but at least it should work in a pinch. Additionally, I think I know why EGA/VGA …

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Re: Soyo SY-6VBA133 BIOS flash challenge

Posted on 2020-03-14, 19:18

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Check if you don't have a jumper that prevents BIOS flashing (on some boards this was a thing).

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Re: What's this "Midiman" 8 bit isa card ?

Posted on 2020-03-09, 00:43

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'd say it would be another of those intelligent MPU-401 clones, now to find the pinout of the port...

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Re: Bought these (retro) hardware today

Posted on 2020-03-06, 21:58

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've seen that thing too once, and heck, I know some people used to even drill DS/DD disks to use them as HD disks in 1.44M drives. So no, that concept ain't new.

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Re: Cannot Get Tandy 2500 SX/33 to boot from floppy.

Posted on 2020-03-01, 15:16

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tandy systems used the drive select jumpers on the FDDs instead of using a "twist" to design the drive A or B. It's a bit complicated. Also Tandy FDDs were powered by the cable itself... So if you try to plug in a normal drive you can potentially kill it or the motherboard.

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Re: Bought these (retro) hardware today

Posted on 2020-03-01, 12:26

by

by Vynix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just got this 1GHz iMac G4, well technically, I did not buy this, rather my father did. He saw it at a garage sale and since I like old computers, he bought it for me. It's a bit battle-scarred (the transparent "edge" around the display is cracked and has a corner that looks to have been sanded off …

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Re: Best way to handle multi-PC (retro+modern) setup with a single modern LCD monitor?

Posted on 2020-02-29, 12:16

by

by Vynix

in Marvin \ Video

in Marvin \ Video

I've been using a Dell 2405WFP for these purposes - VGA/DVI input, 16:10 doing 1920x1200 reasonably well, handles 4:3 quite well, includes composite/component/s-video. It's my bench display for everything from old electronics repair (VHS/SVHS etc.) to video capture setup (BetacamSP scratch display) …

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