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 1 
 on: July 30, 2021, 04:44:19 pm 
Started by rayarachelian - Last post by rayarachelian
This looks a lot like the Lisa, but with vertical drives and attached keyboard: https://www.ebay.com/itm/265247612884

It's as if the guys who designed the Lisa case copied it and just flipped a few things around to make it work for the Lisa instead.

The CPU/RAM board tray pulls out of the back similar to the Lisa, but much smaller: http://www.oldcomputers.net/ibm5322.htm
The power switch is relatively in the same spot as the Lisa, but it's a red rocker, hard power switch.
So aesthetically, at least, this looks like one of Lisa's predecessors.

 2 
 on: July 26, 2021, 09:44:37 pm 
Started by rayarachelian - Last post by DAVID CRAIG
Hi all,

I too received my copy of Couch's book from Amazon recently (it was back ordered for a long time). Interesting reading so far.

Ray's review comments relating to the Lisa computer and POSD division are very good, thanks for your effort here.

I too noticed several Couch technical recollections with the Lisa's software development effort and key project personnel names. I will provide my own technical review clarifications when I finish the book (hopefully in a week or two). I used the Lisa Workshop for both Lisa and Macintosh development from 1984-1986 (I used the Macintosh Programmer's Workshop [MPW] when it became available on the Macintosh Plus). Given Couch's POSD position (General Manager), his recollections of Lisa technical minutiae are very good, but his lack of access to technical Lisa materials today is understandable since he had a lot on his Lisa plate during his 1978-1983 Apple tenure to remember and the source materials are rather rare today.

Overall, I think Couch provided an excellent overview of his time at Apple and admirably described the key Apple projects that he was involved with and how these projects helped Apple become a serious technical company. I wish he had mentioned more about his HP days which involved several very innovative systems including the 3000 and ALPHA systems which provided several important lessons-learned for HP (mostly in a negative way -- see http://www.3kranger.com/HP3000/hp3000_history.shtm and http://www.3kranger.com/HP3000/History/AE1995-11.pdf).

I also have several interesting letters I received from Couch after his Apple days that I can provide to this group which provide insight into the Lisa's technology and how internal Apple events limited the technology POSD could enhance the Lisa software foundation.

Great comments from this LisaList group for both Couch's book and the other many list topics.

~ David Craig
~ Cochiti Lake, New Mexico, USA
~ dtc.bayern@gmail.com

 3 
 on: July 25, 2021, 08:07:43 pm 
Started by AlexTheCat123 - Last post by compu_85
From the fiddling I've done with this, the Office System gets grumpy when there's a widget on the first parallel port of a 2/5.

Perhaps you'll have better luck! You can convert the pin header on the controller to a DB25 with the parallel port cable from an old PC.

-J

 4 
 on: July 25, 2021, 04:56:44 pm 
Started by AlexTheCat123 - Last post by AlexTheCat123
Yep, I've got an ATX power supply that has a wire permanently soldered between those pins that I use for testing stuff.

 5 
 on: July 25, 2021, 04:38:31 pm 
Started by AlexTheCat123 - Last post by rayarachelian
Sure, an ATX PC power supply should work, though you may need to force it to power on by shorting the right pins. see: https://www.smpspowersupply.com/connectors-pinouts.html

 6 
 on: July 25, 2021, 02:43:24 pm 
Started by rayarachelian - Last post by Al Kossow
got my copy.
I'm surprised they let him print pgs 221 and 222

 7 
 on: July 25, 2021, 02:29:02 pm 
Started by AlexTheCat123 - Last post by AlexTheCat123
Great! It should be really easy to make the appropriate DB25 to ribbon cable and I can use an ATX power supply for testing just like I did with my ProFile.

 8 
 on: July 25, 2021, 12:39:06 pm 
Started by AlexTheCat123 - Last post by rayarachelian
Congrats. Yes it will work with a Lisa 2/5, but you'll need to rig up external power and a DB25 to ribbon cable.

I'm not sure, but you might need +12V and -12V as well as +5V and GND. I think the drive cage uses a 24V fan, but not sure if the -12V is used by the drive or just the fan. Obviously you can use whatever fan you like in your own enclosure. I think the fan hooks up to the drive with a 2 (or maybe 3?) pin plug, but obviously not needed for your own enclosure + fans.

If you have an old full height SCSI drive enclosure it might work, but yeah, the power supply might be an issue.

 9 
 on: July 25, 2021, 10:59:54 am 
Started by AlexTheCat123 - Last post by AlexTheCat123
I was lucky enough to stumble upon a Widget drive at an e-waste recycler around a week ago (unfortunately, the rest of the Lisa was nowhere to be found) and I'm going to try to repair it in the coming weeks once my schedule gets a little less busy. Unfortunately, I only have a Lisa 2/5, so I'm unsure about whether the Widget would actually work with my Lisa. Since it uses the same interface as the ProFile, I would assume that I could just connect it to the external parallel port with the appropriate cable, right? Has anyone actually tried this before?

 10 
 on: July 18, 2021, 08:04:06 pm 
Started by blusnowkitty - Last post by rayarachelian
I wonder if the duplication of the AppleNets is allowed between the A and B serialnumbers or maybe 2/5s vs 2/10s or maybe an accident. Hard to say since we have only a single black swan to look at. :(

I'd expect if there were 100K vs 13K Lisae that we'd see more AppleNet number conflicts - like the birthday problem it should show up more often rather than just once. Then again birthdays are 1-365(366) but AppleNet numbers are 001xxxxx so 5 digits long vs 3 and that spreadsheet is a bit small at the moment.

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