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Fizzbinn’s Finds


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I managed to pick up an external portable Sony 6X CD-ROM Discman PRD-650MC for my PowerBook 2400/180 setup, original box and all parts but no manual or drivers. 
 

B5DE9B2B-853E-451B-9BF9-3DD162FC3B31.thumb.jpeg.0ec3374965b2201094d433b9fd33f07f.jpeg

3558A7EF-9784-452B-8B28-A2C4D20C6528.thumb.jpeg.22631d14b7347499f57a2a04c7e05878.jpeg

 

I did the ResEdit trick on the Apple drivers and got it to work except for eject. The disk unmounts but then quickly remounts, if I time pressing the “Open” button just right it’s good but more often I’m too late or early and get an error that I’m sure isn’t great.
 

Anyone have a copy of the original drivers? Ideas where I might find them?  I tried web.archive.org with no luck. 

 

Edited by Fizzbinn
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Nice Discman - I like how it still looks like a consumer model but is data capable.  You might need to search through .jp/Japanese sites on archive, to find the file you need.

 

JB

Edited by Byrd
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I have a Sony PRD-250 with the Powerbook SCSI cable, but never found the Mac install disk.  There is a FWB CD-ROM toolkit that may provide the functionality that you need.  Not sure if it will work, but it was suggested in a Google groups discussion.  No idea what version(s) to try.

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I spent more time on the Internet archive and think I found the drivers!

 

Device drivers for Sony's PRD-Series CD-ROM Discman Products

mac_prd20.sit (402 kB):
Version 2.0 for Apple Macintosh

 

Finding the right Sony website and year was the trick. Assuming the drivers test out okay, I'll see about uploading them somewhere (Macintosh Garden?). The bare drives seem to be fairly common on eBay, the Mac specific SCSI cable not so much though...

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9 hours ago, Fizzbinn said:

Device drivers for Sony's PRD-Series CD-ROM Discman Products

mac_prd20.sit (402 kB):
Version 2.0 for Apple Macintosh

The driver software is actually CD Mounter Pro 3.2.0 by Software Architects. Works great, tested via my PowerBook 1400 (running 8.6) as my 2400 isn’t booting for some reason... grrr. 

 

Edited by Fizzbinn
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Opportunistically adding to my boxed Apple OS collection when I find them on eBay for a non-crazy price.


E4C7DD13-EF2B-4CE9-AFAA-03BC5A306438.thumb.jpeg.4b07ffa77ff8baac652e5d2274512646.jpeg
 

B8EB9454-85FB-470F-9D52-90CC094557BF.thumb.jpeg.bc1ac914e07dbf7c97fb69024e126798.jpeg

 

Still looking for:

 

System 5.0 - Not holding my breath, recently went for $305 on eBay...

System 7.1

Sysyem 7 Pro

Mac OS 8.0

Mac OS 8.6 - Not sure this was sold on its own...

Mac OS X 10.0 

Mac OS X 10.4 - Last one in a full size box I believe. 

 

 

 

 

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On 5/30/2020 at 6:07 AM, Fizzbinn said:

Mac OS 8.6 - Not sure this was sold on its own...

I'm not sure that it was.  If it wassold as a retail package, it probably wouldn't have been packaged in it's own unique box, but rather as an upgrade disk included with 8.5.

 

I think it may also had been offered as a free downloadable update to 8.5,?  Apple's FTP site was available on the Wayback Machine last I knew, so perhaps I can check....

 

c

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I turned my attention to my IIsi over the weekend (still can’t figure out the voodoo to bring back my 2400c :-( ) and played with the Applied Engineering QuickSilver card I recently acquired with manual and floppy!

 

C1DC9CEB-F700-40A3-9728-50381B5143BD.jpeg.32d73c53e2c10646c0539d50ab8385ae.jpeg

 

The 32k static RAM Cache is the most interesting thing about it as I have other adapters that add an FPU. I decided to run some benchmarks via Norton Utilities System Info 3.2.1 (System 7.0.1) with the original clock chip and overclocked to 25Mhz with 50Mhz clock chip, with and without the card/cache and FPU:

 

B4DB32A2-81E7-4210-8E83-985964854D4A.jpeg.ec085739be3e0f7ef0d670713aeda2b1.jpeg
 

A neat progression in performance improvement (essentially doubling over stock). The best performance run “Macintosh IIsi/25 + FPU/Cache/D” came when I remembered the Memory Control Panel Disk Cache trick of setting it to 1024k to use up the slower soldered on motherboard 1MB of RAM with disk cache forcing the video memory, OS and all other apps to use the faster RAM in the SIMM slots. If you have the memory a pretty significant improvement on its own! :-)

 

CPU comparison with the other system in this version of Norton Utilities System Info:
 

B3173A93-F473-4CA8-9B4B-B97B29AEF8BE.jpeg.d94d96faa4f567233a2ad06068fe3afb.jpeg


 

Edited by Fizzbinn
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Sony 6X CD-ROM Discman PRD-650MC update - So from the Internet Archive Sony product specs I was able to find out what the Sony model was for the optional internal "Rechargable Lithium-Ion Battery" mentioned on the box: Sony LIP-12

 

Surprisingly you can still get new ones (3rd party) on Amazon!

https://www.amazon.com/gp/product/B07WDW85LX/

 

Looks like it should work with the similar PRD-250MC Sony 4X CD-ROM Discman as well. If only replacement PowerBook batteries were so easy to find! (I guess being used in a bunch of other higher volume Sony products helps...)

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I got a “new” LC this week, even though my LC III is a much better machine something about the first LC drew me to finding one.
 

39147200-E718-4265-AF64-23082DCDE279.jpeg.382d208a14888fec131959a22bb0dfc8.jpeg

 

The unique top case with the ability to have a 2nd floppy (not that I’m likely to use it) and the molded in plastic model info on the bottom case make it more interesting to me.

 

790FF0AF-DF2B-4698-8273-849363CC1C8C.jpeg.5f454200653c5efbd851aba4a091db5e.jpeg
 

The internal speaker/fan assembly with motherboard spring contacts is also unique to the original LC, Apple saved a few pennies with the following models using a separately cable attached fan and speaker with more standard connectors on the MB.

 

As advertised on eBay it wouldn’t boot or show any signs of life when it arrived. Swapping in the good power supply from my LC III got the fan to start... Time to re-cap!

 

52C272D3-60F5-41EE-B4B6-2A3F77B602E6.jpeg.5e562fec243ee51c738bfa805cfeb5a2.jpeg

 

Twist method removal and solder braid pad clean up with plenty of flux, q-tips and IPA to get the remaking gunk off:

 

184515EB-FB38-4F4A-93D8-DA0D1C7F3A63.jpeg.f6d00a46fc31dbf23ade12e16f184c61.jpeg
 

...the new caps go on and after a bunch more q-tips and flux remover:

 

A052A944-8ABF-4064-9285-74DFB3D250A6.jpeg.6810e75fa720e9b01365d7bd85b5b8fd.jpeg

 

(Not pictured, the three other caps next to the SIMM slots)


...and we have start-up chime! :-) 

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9 hours ago, Daniël Oosterhuis said:

Nothing wrong with an original LC, it's a neat machine. Plus, it's one of only two Macs to use the 68020 processor, with the other one being the original Macintosh II.

Absolutely! I really like the original LC.

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I’ve been looking for somewhat reasonable 040 upgrade for my IIsi for a while now and (fingers crossed!) I think I got it via eBay browsing new Macintosh listings:


Apple Macintosh Mac IIsi Computer | For Parts or Repair:
https://www.ebay.com/itm/Apple-Macintosh-Mac-IIsi-Computer-For-Parts-or-Repair-/224089372725


Single picture of the inside:

B157AD8A-5F62-4948-BF8F-0294F99B293F.thumb.jpeg.8916877ce323d319b89c31436b1114d6.jpeg

 

Not sure what speed Turbo 040 it is but it the PDS adapter is the model that sets the accelerator card back a bit, not blocking the rear port, which lets you use a Asante PDS network card.

 

Not sure what’s up with the SCSI device, doesn’t look like a normal hard disk, but for $130 shipped, and getting a parts IIsi in the gamble I think there’s a good chance I got a great deal. Fingers crossed x 2.

 

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18 hours ago, bibilit said:

I think the main hard drive is missing, this is just the board of it pictured there. 

Ah, you're right. I've never seen a hard drive removed like that... certainly more difficult than pulling the whole thing out. Maybe they thought someone might want the board to swap with a drive of the same model with good mechanics but failed electronics...

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@fizzbinn

 

yes probably, if the hard drive was shot, not a big deal anyway. 

 

I managed to keep all those boards for years when the hard drive was bad (crashed heads...)

 

so  far I have managed to repair a few units swapping boards around, so probably worth keeping it also. 

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12 hours ago, MacNiels said:

Nice find! Curious what speed the accelerator will be. 

 

I think it’s 33Mhz based on a closer look at the picture, the CPU marking looks like it ends in “25M”, and the clock chip looks like it’s 16.6Mhz. Pretty sure the CPU speed is double the clock on these and that DayStar used 25Mhz 68040 in their 33Mhz cards adding the heat sink to compensate for the overclocking.  
 

I’m not sure if there would be way to tell if there might be Cache daughter card on the other side. I shouldn’t be greedy. Great deal as is.

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Edited by Fizzbinn
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I don't think the '040s liked being overclocked, and most were heatsinked even at 25MHz. It could be clock multiplied by 1.5x, which would right around 25MHz. An 8MHz overclock would be pretty extreme, I figure Daystar would have put a 33MHz '040 on it if they wanted it to run at that speed, but I could be wrong. 

 

EDIT: I am probably wrong, looking for more pictures, I found a 25MHz model that lacks a heatsink, and has a crystal running at 12.5MHz, so it'd make sense for this to be OC'd to 33MHz. Still, I figure this is somewhat later in the '040's life, where it probably ran a little cooler?

Edited by Daniël Oosterhuis
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@Daniël Oosterhuis I'm fairly certain that the clock chips for 68040 CPUs are half the CPU speed. I've seen this on numerous forums and discussions on overclocking the 68040. I can see if I can find it again but there is a good thread on here about the different 68040 production models/versions where the consensus seems to be that there really isn't any physical difference between 25Mhz and 33Mhz 68040s from the same production run (mask version?). Later models use smaller processes and generate less heat to you can potentially run them at higher speeds with less need for heat sinks/fans.

 

Generalizing from what I recall (I haven't checked dates when the versions were released or anything):

 

68040 version 1 ~1991

25Mhz - Need heatsink

33Mhz - Need heatsink + fan

40Mhz - Need heatsink + fan and luck

 

68040 version 2 ~1992

25Mhz - Can run bare

33Mhz - Need heatsink 

40Mhz - Need heatsink + fan

 

68040 version 3 ~1993

25Mhz - Can run bare

33Mhz - can run bare

40Mhz - Need heatsink 

 

Of course the particulars of the specific computer case and airflow design would mean the above would just be a rule of thumb.

 

 

 

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I picked up a DayStar PoweCard 601 (100Mhz) for BIN $61 shipped on eBay.  Would make a pretty interesting upgrade for my Quadra 605 (smallest desktop PPC?) ...of course there is a pretty big catch. As advertised there are 4 missing, broken off, pins for the motherboard connection (040 socket). 
 

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And the damage from two angles:

 

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I’m well aware I might have a useless, but interesting to me, piece of history, but still think there might be way to fix the pins or maybe bodge wire around it?  
 

Any one have any experience with something like this? Thoughts/opinions/advice?

 

 

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Well, I don't know, but since it appears to be a regular '040-type socket, maybe you can simply replace it?


It'd be a huge chore to desolder all those pins, though...

 

Or maybe, as an alternative, you can drill out the broken pin stubs and solder appropriately thin header pins in their place?

 

c

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On 7/25/2020 at 3:33 PM, CC_333 said:

Or maybe, as an alternative, you can drill out the broken pin stubs and solder appropriately thin header pins in their place?

Thanks @CC_333, I think this is the path I’m going to take, probably going to start a separate thread when I get to it. 

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