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2022.06.03 added links to LisaList1 and LisaFAQ to the General Category

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 21 
 on: January 24, 2023, 01:48:03 pm 
Started by D.Finni - Last post by D.Finni
Article by Al Kossow: https://computerhistory.org/blog/apple-lisa-still-more-to-uncover/

 22 
 on: January 24, 2023, 12:05:11 pm 
Started by stepleton - Last post by compu_85
A while ago I made somewhat of a joke thread about the Lisa "Pepsi" system, and we weren't quite sure what Pepsi actually was.

From APIN-OFFICE.TEXT:
Code: [Select]
{constants used to check the value returned by the Mach_Info call
(the I/O board part of the record)}

IOlisa       = 0;    { Old I/O board (lisa) w/Twiggys }
IOpepsi      = 1;    { New I/O board (pepsi) w/Sonys and Widget }
IOlisaLite   = 2;    { Old I/O board (lisa) w/Sonys }
IOpepsiLite  = 3;    { New I/O board (pepsi) w/Sonys, no Widget }

And there we have it. I didn't know a Widgetless 2/10 was called a PespiLite. Better than Diet Pepsi I suppose?

-J

 23 
 on: January 24, 2023, 07:45:36 am 
Started by Al Kossow - Last post by Al Kossow

Oh, are these the Developer disks that came with the Software Supplement? These are the disks that 3rd party developers got before Workshop was ready to use to make Macintosh software.

I hadn't seen this doc before, it is buried in the early mac developer notes at
https://archive.org/details/MacintoshDevelopmentNotes
pp 75-85
mac development was done using the pascal monitor.

 24 
 on: January 24, 2023, 07:21:52 am 
Started by Al Kossow - Last post by Al Kossow
ROM7T: in the set is for the twiggy mac

 25 
 on: January 23, 2023, 11:18:53 pm 
Started by kgraaf - Last post by jamesdenton
So, the last correspondence I had about this particular error was on 13-Aug 2020. At the time I was using MacOS Catalina (10.15.6) on x86_64. The circumstances were the same: attempting to boot from a floppy resulted in the error.

From Ray:

"IPC is Instruction Parameter Cache. It shouldn't be null. It means something didn't work right when it allocated memory. So, generator transforms opcodes from the 68000 into basic blocks and then decodes the operands passed to the opcodes because it will like re-execute the same code repeatedly so it doesn't want to do the work twice. So, if it's null it means it wasn't allocated. A workaround can be that if I see it go to null I reallocate it. It can only be null if it's hitting some other bug somewhere else since the MMU translation table it's glued to is there already, or it got clobbered by something wiping that data structure with zeros. Either way, it's bad."

It looks like I was usign wxWidgets 3.1.2 at the time, which I don't think is compatible with my current kit (M1 ARM64/Ventura). I did manage to compile my own at the time, but no idea if I successfully tested boot from floppy at that point.

 26 
 on: January 23, 2023, 08:35:22 pm 
Started by Al Kossow - Last post by D.Finni

and it turns out the twiggies in the auction are just the headers, not the sources

I was going to do some back-of-envelope math to figure out if ROM sources would even fit on those couple of Twiggy disks, based on that set of 4 on 400K Sony disks.

So those disks just have the EQUate files? How do you know?

Oh, are these the Developer disks that came with the Software Supplement? These are the disks that 3rd party developers got before Workshop was ready to use to make Macintosh software.


 27 
 on: January 23, 2023, 08:32:52 pm 
Started by Al Kossow - Last post by D.Finni

and it turns out the twiggies in the auction are just the headers, not the sources

I was going to do some back-of-envelope math to figure out if ROM sources would even fit on those couple of Twiggy disks, based on that set of 4 on 400K Sony disks.

So those disks just have the EQUate files? How do you know?

 28 
 on: January 23, 2023, 08:29:30 pm 
Started by Al Kossow - Last post by Al Kossow
Third interesting point: I don't see the MacWorks sources on the Bitsavers archive anymore.  :-[

they were a partial set
their presence on line may interfere with an upcoming project


and it turns out the twiggies in the auction are just the headers, not the sources

 29 
 on: January 23, 2023, 08:27:03 pm 
Started by Al Kossow - Last post by D.Finni
Third interesting point: I don't see the MacWorks sources on the Bitsavers archive anymore.  :-[

 30 
 on: January 23, 2023, 08:17:30 pm 
Started by Al Kossow - Last post by D.Finni
So interesting that someone was still using Twiggy FileWare disks even into February 1984. :o

Why? Sony 400K disks had less capacity, but everyone with a Lisa surely had either a ProFile or a Widget. So this must have been someone's backup copy, right? That's why they're all dated: because they're someone's point-in-time backup copy.

Second interesting point: starting bid for this auction was $349 and the auction duration is only 1 day. Surely the seller knows he can realize a much higher final sale price with a 5 or 7 day duration! Why such a short auction which will only serve to limit the sale price???

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