Re: insane price for 486 mobo on ebay

Posted on 2015-05-04, 17:33

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sometimes I guess its just that someone sees something they just gotta have - too bad if it turns out there's another looney like yourself 🤣 , here's a current example... http://www.ebay.com.au/itm/Orchid-Soundwave-3 … =item41952436a0

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-29, 15:20

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Snarkiness Index: zero. Apparently, Hightreason , you've taken no roads from Hull as high north as Loch Lomond. Anyways, despite differing paths, we have arrived at the same point - to provide Turboman with advice that he could try using 4 of e.g. any of these type of chips; Winbond W24M257AK or …

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-29, 05:29

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

{Grin} Oh, hello, there's HighTreason down there on the low road http://www.smileyfaces.ws/smileys/waving/animated-smileys-waving-093.gif ... Yes, if we did remove those four fake SRAM chips in bank 1 of that M912, what replacement chips are reasonably likely to be pin compatible with those bank …

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-28, 14:27

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

All my comments have been in regard to the M912. Unfortunately no-one seems to know what chipmaker made those chips in the pic I cited above with a symbol like a 'Pisces' sign...

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-28, 00:02

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My intention with the continuity test was mainly just to see if the pins on a single fake cache chip had zero ohm continuity to the other pins on that single fake cache chip. Perhaps it would be easier if we just enquire if anyone else has broken open a fake 28 pin cache chip, and if so, are the …

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-27, 16:10

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

FGB , Your experience is helpful, in that it gives clues as to which lines of investigation are worth following up. So, from your experience & Turbomans pics, specifically; http://s636.photobucket.com/user/gijoe25th/media/486%20VLB%20unknown/DSC07851.jpg.html I deduce that the ENTIRE bank 1 (U28-31 …

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Re: Default CPU speed is low

Posted on 2015-04-27, 11:14

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Depends if the cpu was so-called 'multiplier locked'? also, what Revision of the motherboard AX6BC (and maybe bios) you have...

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Re: Learning the hard way isn't fun. Big mistake I purchased x2

Posted on 2015-04-27, 10:50

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

FGB said; ".. real cache but wrong labels . They are labeled 256K*8 but are infact 128K*8 = 128KB in total .." I'd disagree with the above sentence as a statement of bald fact - if you view the jumpering information in the manual for the M912 (which FGB has said that board is), the setting of the …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2015-04-27, 07:11

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by buyerninety

in Marvin \ Sound

in Marvin \ Sound

So did Marmes figure out the pinout of the ROM, and what EEPROM it may be equivalent to?

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Re: Weird connector on Teac 5.25" Diskette drive.

Posted on 2015-04-25, 16:39

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

" What you are seeing is the base of the connector for the read write heads ribbons. " Well, you're right of course, and I'm embarassed - NOW I recall seeing almost the same 'cracking' looking damage on the back of another normal 5¼ drive... Hey, here's a possibility to consider - I saw this pinout …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2015-04-23, 23:07

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by buyerninety

in Marvin \ Sound

in Marvin \ Sound

Sure, the order of the jacks is better left at whatever order is easiest to layout on the pcb - always seems such jacks are too darn close together when you go reaching round to the back of the computer, though.. Very minor suggestion - end the copper layout at the pcb corners like you can see here …

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Re: Weird connector on Teac 5.25" Diskette drive.

Posted on 2015-04-23, 18:39

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OP said;" It's pretty apparent there never was a molex connector on here. " Mmmm , and where did I say it ever had a molex connector? http://www.dhammawheel.com/images/smilies/thinking.gif " what black plastic thing would you be talking about because there simply isn't one ." This is the object ( …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2015-04-22, 17:14

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by buyerninety

in Marvin \ Sound

in Marvin \ Sound

A suggestion on the current http://i.imgur.com/oRtAm9f.png Reduce the unused area, by making a cutout in the final pcb, the purpose of which is to reduce any chance that the pcb will intrude onto or close to motherboard components (capacitor tops, insertable bios ROM, coils, etc.). {So reduces …

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Re: Weird connector on Teac 5.25" Diskette drive.

Posted on 2015-04-22, 11:27

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

From the look of that ragged black plastic item with the 5 metal prongs, looks as if a connection, maybe with a flat ribbon cable, was ripped out. Well, no big problem - probe the prongs to see if there is 0 ohm continuity with certain of the empty holes where the normal power connection should sit …

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Re: Weird connector on Teac 5.25" Diskette drive.

Posted on 2015-04-22, 04:09

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does it not have the Teac model information sticker on it? 😒

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Re: Cool POST screen

Posted on 2015-04-21, 14:59

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ha, no - it is just that you have a ' MS6163' (Ver 1) motherboard which has been flashed with a ' MS6163 Pro' (Ver 2) motherboard bios v3.10 - so you have a bios which is not actually intended for your model of motherboard. (Reread my previous posts to understand how I know this.) It is not going …

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Re: Cool POST screen

Posted on 2015-04-21, 11:38

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Wha- you say "MS6163 Ver.1." Where do you see this "Ver.1"?

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Re: Need to identify these Motherboards lots of pics inside 8080, 286, 386, 486, and rebuild question

Posted on 2015-04-20, 03:21

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ref Board 10 ; may well be an 'Atronics International Inc.' motherboard - if there is not a designation ATI- xxxx on it, then MASTER is probably the model ID, as about 1992/1993 Atronics was using single word designation (e.g. ATI- IDEAL , to ID the model of its add-in cards). The chipset "USA i" …

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Re: ABIT KT7A v1.3 Low 3DMark2001SE Results

Posted on 2015-04-17, 07:47

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

havli said; " VIA chipsets usually run slower with more RAM sticks - performance drop is minimal but can be measured in benchmarks. Also some boards can be slower than others, even if most of the hardware is identical. For example these two - http://hw-museum.cz/view-mb.php?mbID=17 and http://hw- …

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Re: SCSI Termination Question

Posted on 2015-04-14, 13:23

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by buyerninety

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yup :happy: Adptec 29160 is an even later generation card than the 2940u 2 w... Ref; '29160_install_guide.pdf' and '29160_users_reference.pdf' In the case of your 29160, there are two electronically isolated SCSI bus segments on the card - there is an External and an Internal 68 pin connector both …

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