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Old 13th December 2016, 8:19 AM   #16
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Cool project this is from before i was born (just)
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Old 13th December 2016, 8:32 AM   #17
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Quote:
Originally Posted by iMic View Post
...If I could find someone to manufacture the PCB, then I'm confident I could handle the rest.
Should be a piece of cake. Have a look at Entech, PCB Global and OSH Park.

Be careful that they don't add their own logos etc, send them a photo of the finished board for reference.

You'll also find that getting 1 board made or 6 made will be the same price.
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Old 13th December 2016, 8:44 AM   #18
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Great work, thanks for sharing

Is the keyboard a genuine IBM one? I've never seen one so yellowed before.

Hopefully should come up well with some retr0bright goodness
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Old 13th December 2016, 9:11 AM   #19
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you could always DIY an adlib clone using this guys PCB as well

http://www.malinov.com/Home/sergeys-.../isa-opl2-card
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Old 13th December 2016, 12:00 PM   #20
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I just happen to have the chips in question. Brought them off Amibay a while back from a guy who was programming and selling them but I never had much luck getting it to work on one of my SB 2.0's but I haven't tried the other yet. I'm not sure what I was doing wrong as it's the correct revision card etc but I wasn't overly fussed in getting it to work so it got put back on the LONG list of things to do.

If you think you might make better use of them you can have them.
That would be great, provided I can find a card to install them in I wouldn't mind messing around with them to see if they can be made to work.


Quote:
Originally Posted by sean0118 View Post
Should be a piece of cake. Have a look at Entech, PCB Global and OSH Park.

Be careful that they don't add their own logos etc, send them a photo of the finished board for reference.

You'll also find that getting 1 board made or 6 made will be the same price.
Works for me, I can assemble 6 OPL2 cards instead. Keep one or two spares and share the rest around.


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Originally Posted by mr626 View Post
Great work, thanks for sharing

Is the keyboard a genuine IBM one? I've never seen one so yellowed before.

Hopefully should come up well with some retr0bright goodness
It's some aftermarket non-branded one. Doesn't feel like it has mechanical switches either. That said, it's correct for the era and it works, so it's doing the job for now.

I would like to find a genuine IBM keyboard for it at some point but somehow I doubt that will be an easy task.
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Old 13th December 2016, 2:14 PM   #21
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If I could help you with the keyboard I would, but none of mine are period correct for what you are doing and I'm not even sure that they would work
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Old 13th December 2016, 8:26 PM   #22
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Here is a page which lists some sound card options for you

I guess if you don't mind being period correct there are 16 bit options listed in that page

Out of curiousity, I started looking around and also found this thread that seems to indicate CT1730/1740 SB16 cards might work.

Probably a bit expensive but Ebay has a 1740 from Greece

I'm sure I've got a SB2.0 rev0 (non CMS chip compatible) floating around somewhere but I'm guessing you would prefer a rev4 so you can stick Flaming Joe's chips on it

Edit: There's always the rare Media Vision Thunderboard which always commands a premium.

Or there's this weird ass yumcha Sound Blaster knock off which I have never heard of/seen before lol

And if you are feeling rich.. these come up not that often. boxed Adlib

Last edited by dacow; 13th December 2016 at 8:35 PM.
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Old 15th December 2016, 12:29 AM   #23
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Very nice job done on the restoration! What is the CPU in this machine? It will be an 8088, but what manufacturer and what type?
Checked this evening. The processor is an AMD 8088:

D8088 8407GMA (c) 1982 AMD


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If I could help you with the keyboard I would, but none of mine are period correct for what you are doing and I'm not even sure that they would work
Could still be interested if there were anything cool there and somewhat close, around the 1980s IBM. Some repairs are to be expected.

That said I should really have the machine running before investing in peripherals... but I suppose that's how these projects go.


A couple of minor updates to share.

I've come across an old ESS AudioDrive ISA 16-Bit sound card that appears to be compatible with 8-bit ISA, and it has manual DMA and IRQ jumpers onboard so it isn't a PnP card. While it's somewhat new for the machine and not exactly what I was looking for, it would still be interesting to see if it works.


The Seagate ST-412 has started to produce some bearing whine, which doesn't bode well for the old drive. I injected some lithium grease around some of the moving parts which has helped with some of the noise, but it still sounds louder than I think it should.

If the bearing is press fit into the casting, I'd be interested to see what type of bearing it is and whether it could be swapped out for an equivalent series. It would require removing the platters, spindle motor and head stack which is a significant amount of work, but if the drive does fail, it'll make for an interesting experiment. I'm accustomed to having bearings pressed in automotive applications, but this would be different on many levels.

The MiniScribe drive that came out of the machine is still serviceable in case the Seagate does need to come out for additional repairs, so the XT won't be without a drive. I still prefer the Seagate however, so hopefully this can be addressed soon.
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Old 7th January 2017, 6:42 PM   #24
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Very nice mate. It is always great to see these old machines up and running.

If you are interested check out my thread from 10 years ago about my own IBM PC XT. A 1986 model which I still have and is still a working system!
http://forums.overclockers.com.au/sh...d.php?t=509859

Or, my genuine IBM 'portable', which I also still have and is also still functional.
http://forums.overclockers.com.au/sh...d.php?t=840217


Cheers.
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Old 7th February 2017, 9:07 AM   #25
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"condition close to scrap" it looked pretty good to me? Dusty for sure but I've seen way worse.
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Old 7th February 2017, 10:35 AM   #26
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Wow! This takes me back to my first PC!

I still have the MFM drive from that containing -my childhood- hopefully one day I find someone in Melbourne who's able to read MFM hard drives so that I can get the data off it!
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Old 7th February 2017, 11:17 AM   #27
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clickykeyboards.com have 1986 Model M in stock: http://clickykeyboards.com/product/e...ibm-29-may-86/

They are expensive.
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Old 7th February 2017, 12:11 PM   #28
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clickykeyboards.com have 1986 Model M in stock: http://clickykeyboards.com/product/e...ibm-29-may-86/

They are expensive.
Model M's are no good for the IBM XT, you need the Model F "XT".

Still pretty damn expensive.
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Old 8th February 2017, 7:50 AM   #29
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The first PC i had (not owned, was a long term loan) was similar to what you've restored.
Things you could run..
Used to run dos 5.0 and dosshell.
Games i played were Pipedream and Xananoid (or similar, kinda forget the name, was my fave).
Had a ship and you shot aliens coming down the screen, you could buy upgrades from an alien dealer etc..
Word processors and spreadsheet apps of the era.
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Old 8th February 2017, 2:01 PM   #30
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My first PC was an IBM XT running @ 16mhz with a yellow turbo button that would push it up to 18mhz.. Blistering fast.. even has a 9600bps modem and a null modem. My first introduction to the world of PC computing.

I has 2 x full height WD 20MB hard drives in it and ISA video card. At the time it was cutting edge. I still have the memory DINNS that it had. Unfortunately threw out the case, motherboard and IDE controller board.

Good restore. If you look up youtube there's some great videos on restoring the yellow keyboard plastic back to the original beige colour.
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