your latest purchase

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robespierre
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Re: your latest purchase

Unread postby robespierre » Fri Sep 02, 2016 9:40 pm

Very cool. I have a MC88110 databook I picked up long ago: IIRC it has a lot in common with the PPC601.
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Re: your latest purchase

Unread postby smj » Fri Sep 02, 2016 11:44 pm

ClassicHasClass wrote:Well, getting back to small systems, I just landed a Motorola 8120 (25MHz 88100 -- yes, it's an 88K). It's in transit and will arrive with SysV and a blank root password. First order of business will be to convert it to a SCSI2SD ASAP.

Oh, so you're the big spender! Image

It's a cute little box. Please image that drive, I've not seen a copy of the media in the wild. I couldn't convince the seller of the 8120 I picked up years back to dig out the hard drive he said he had sitting around... :(
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Re: your latest purchase

Unread postby ClassicHasClass » Sat Sep 03, 2016 8:23 am

Yeah, I broke my budget a little on that one, but I figured this was realistically my only chance to play with an 88K that wasn't a doorstop. I definitely will be imaging the drive.

However, someone has some (SIMH format?) tape images here: ftp://ftp.informatik.uni-stuttgart.de/pub/cm/motorola/
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Re: your latest purchase

Unread postby guardian452 » Sat Sep 03, 2016 8:45 am

New graphic card to plug into my laptop. High WAF: can be set up on kitchen table and taken away when not in use ;)
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smj
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Re: your latest purchase

Unread postby smj » Sat Sep 03, 2016 4:23 pm

ClassicHasClass wrote:Yeah, I broke my budget a little on that one, but I figured this was realistically my only chance to play with an 88K that wasn't a doorstop.
Yeah, I'm not looking forward to the (now, surely) dead AViiONs waiting in storage... I tossed a PROM dump or two at Bear Stricklin, but I don't think I ever saw a solution for those later models.

ClassicHasClass wrote:However, someone has some (SIMH format?) tape images here: ftp://ftp.informatik.uni-stuttgart.de/pub/cm/motorola/

Ooh, thanks for the pointer!
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Re: your latest purchase

Unread postby ClassicHasClass » Sat Sep 03, 2016 9:51 pm

smj wrote:
ClassicHasClass wrote:However, someone has some (SIMH format?) tape images here: ftp://ftp.informatik.uni-stuttgart.de/pub/cm/motorola/

Ooh, thanks for the pointer!


Let me know if you figure out how to get those running on it, since it would be nice as a fallback in case this goes toes up before the SCSI2SD arrives. I think they're a later version than this system has, too.
smit happens.

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probably posted from Image bruce, Quad 2.5GHz PowerPC 970MP, 16GB RAM, Mac OS X 10.4.11
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Re: your latest purchase

Unread postby miod » Sun Sep 04, 2016 1:27 pm

ClassicHasClass wrote:Well, getting back to small systems, I just landed a Motorola 8120 (25MHz 88100 -- yes, it's an 88K). It's in transit and will arrive with SysV and a blank root password. First order of business will be to convert it to a SCSI2SD ASAP.

Congrats, that's a rare snatch. MVME187 boards which 8120 are based of (with the parallel port chip replaced with another serial chip) are much more common.
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Re: your latest purchase

Unread postby miod » Sun Sep 04, 2016 1:30 pm

smj wrote:It's a cute little box. Please image that drive, I've not seen a copy of the media in the wild. I couldn't convince the seller of the 8120 I picked up years back to dig out the hard drive he said he had sitting around... :(

I have Motorola SysVR3.2 tapes for m88k, version 3 and 3.1 - only supporting the 88100 designs, not the 88110 ones which were only supported by SVR4. I probably ought to archive them somewhere eventually...
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Re: your latest purchase

Unread postby miod » Sun Sep 04, 2016 1:31 pm

robespierre wrote:Very cool. I have a MC88110 databook I picked up long ago: IIRC it has a lot in common with the PPC601.

That's the other way around. The first PowerPC designs reused the 88110 busses and cache coherency protocol.
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Re: your latest purchase

Unread postby skywriter » Sun Sep 04, 2016 5:56 pm

@japes, that was about the size of the 12 I used to use in DEC PDP-10 manufacturing. Back then there was a 10 year to EOL, so we still built and tested spares for the KA, KI. The 12 was used as a cable, and small module tester. Test programs were loaded with paper tape. The 8's were part of module testers that used a directed logic probe. Tests software was on RK05 packs. DEC had a long history of eating their own dog food for mfg, test, and dev. We were still using GT-40's for Venus and Jupiter multilayer board routing.
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jpstewart
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Re: your latest purchase

Unread postby jpstewart » Thu Sep 08, 2016 4:18 pm

My most recent purchase is somewhat smaller than some of the other things in this thread. It was a hard-to-find auxiliary video board for my SparcStation 20. (Sun part 501-2488) Almost a year ago I was (finally!) able to score not one but two 8MB VSIMMs. Now that I have the AVB I can use both VSIMMs at once for dual-head SX graphics.

It's basically just two connectors (one to attach to the motherboard and the external 13W3) plus a handful of passive components. Yet they're hard to find and expensive. I think I paid more for the AVB than I did for the workstation it's in!

AVB_top.jpg
Top of the AVB showing the very small number of components.

AVB_bottom.jpg
Bottom of the AVB. Not much to see here.

SS20_inside.jpg
The AVB in its natural habitat. The two 8MB VSIMMs are visible near the centre of the image.


(That's a Ross dual 125MHz/1MB cache CPU module at the lower right in case anyone is wondering. My next purchase might be a twin brother for it, to bring the SS20 up to the full four CPUs.)
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Re: your latest purchase

Unread postby kramlq » Fri Sep 09, 2016 9:53 am

jpstewart wrote:My most recent purchase is somewhat smaller than some of the other things in this thread. It was a hard-to-find auxiliary video board for my SparcStation 20. (Sun part 501-2488) Almost a year ago I was (finally!) able to score not one but two 8MB VSIMMs. Now that I have the AVB I can use both VSIMMs at once for dual-head SX graphics.

It's basically just two connectors (one to attach to the motherboard and the external 13W3) plus a handful of passive components. Yet they're hard to find and expensive. I think I paid more for the AVB than I did for the workstation it's in!

Nice find, and thanks for posting the pics. I've never seen one of those. I thought it was a full sized SBus card.

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Re: your latest purchase

Unread postby vishnu » Fri Sep 09, 2016 2:28 pm

Nice pix of a fairly interesting piece of hardware! I looked fairly closely but I don't see anything that looks like a date stamp. I wonder what the idea is behind all those square solder pads...
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Re: your latest purchase

Unread postby guardian452 » Sat Sep 10, 2016 6:11 am

vishnu wrote:Nice pix of a fairly interesting piece of hardware! I looked fairly closely but I don't see anything that looks like a date stamp. I wonder what the idea is behind all those square solder pads...


This is just a guess but...

If they specifically did NOT want a ground plane, they would break up the copper into isolated chunks. They wouldn't want to get rid of all the copper or it would use up their etchant faster.


Now let's hear the real answer from a non-layperson :lol: e.g. Robes...

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Re: your latest purchase

Unread postby robespierre » Sat Sep 10, 2016 6:40 am

With ferric chloride, the etchant just gets regenerated into cupric chloride. So no big deal.
I don't know the reason for those islands, I've seen them a lot on Digital boards, too. My hunch is that they reduce warping.
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