The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘68k’ Category

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40th Lisa anniversary last week: download Apple Lisa OS Software version 3.1 source code files

Posted by jpluimers on 2023/01/30

I missed this because there is no RSS feed for [Wayback/Archive] Art of Code – CHM* (there is an email [Wayback/Archive] Art of Code Subscription, but [Wayback/Archive] Email is so last century • The Register).

Anyway: the Apple Lisa turned 40 last week and to celebrate that, the Lisa OS Software got released to the public through the Computer History Museum. That is: after you accept the [Wayback/Archive] Download Apple Lisa source code files: APPLE ACADEMIC LICENSE AGREEMENT Lisa OS Software version 3.1, or just download [Wayback] d1yx3ys82bpsa0.cloudfront.net/source/lisa-source.zip.

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Posted in 68k, Apple, Apple Lisa, History, Power User | Leave a Comment »

Apple retrocomputing link clearance

Posted by jpluimers on 2021/11/29

For my archive:

–jeroen

Posted in 68k, Apple, Classic Macintosh, History, Macintosh SE/30, Power User | Leave a Comment »

“This does not compute”: Mac SE/30 repair

Posted by jpluimers on 2021/09/21

A while ago, This does not compute had a few nice videos on a Mac SE/30 and it’s repair, including the recap process of replacing the electrolytic capacitors (or condensators in some other languages), and cleaning the board (some wash it with hot water and soap, others with isopropyl-alcohol, often called rubbing alcohol).

Note the simasimac can have many causes: bad capacitors in main board are the most common, but it can also be bad memory.

White lithium grease can make the floppy work again (see also [WayBack] Lithium soap – Wikipedia and [WayBack] Grease (lubricant) – Wikipedia).

He also added some links to which I added some quotes and WayBack links:

Notes

Desolder can be tricky, especially for surface mount. This helps:

  • Add some fresh 60/40 solder to the joints with a solder gun (as modern solder is lead free, whereas past solder contained lead)
  • Carefully heat up the component and surrounding area with a heat-gun

Choosing capacitors:

Soldering: always add some fresh solder on the pads before soldering surface mount (SMD) capacitors.

–jeroen

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Posted in 68k, Apple, Classic Macintosh, Development, Hardware Development, History, Macintosh SE/30, Power User, Soldering | Leave a Comment »

Computing History – The UK Computer Museum – Cambridge

Posted by jpluimers on 2020/06/19

On my places to visit:

The Centre for Computing History is a computer museum based in Cambridge, UK. With a collection of vintage computers and game consoles, many of the exhibits are hands on and interactive.

[WayBack] Computing History – The UK Computer Museum – Cambridge.

When I bumped into it, this was their collection size, ranging from the 1960s until recent history:

Archive Statistics :

  • Computers = 993
  • Peripherals = 1446
  • Mobile Devices = 31
  • Game Consoles = 213
  • Video Games = 10259
  • Software Packages = 2605
  • Books = 2045
  • Manuals = 4106
  • Magazines = 9057

Looking at their archived brands (having [WayBack] MITS – Altair and [WayBack] Raspberry Pi in the collection) is such a joy.

Archiving the older parts is a tough job, as they stem from way before the web era, so information has been lost, parts are hard to source, a lot of hardware got thrown away or is hard to find at all, people have died. More on that at [WayBack] About – Computing History.

Without a physical visit, you can find what they have at [WayBack] Search Our Archive – Computing History.

The video below on their archive is impressive.

–jeroen

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Posted in 6502, 68k, Apple I, BBC Micro B, BBS, C64, Commodore, CP/M, dial-up modems, FidoNet, History, IBM SAA CUA, PowerPC, Tesseract, VIC-20, Z80 | Leave a Comment »

Sprites mods – Miniature Macintosh Plus – Result

Posted by jpluimers on 2020/04/10

Such a cool device: [WayBack] Sprites mods – Miniature Macintosh Plus – Result.

The whole project:

  1. [WayBack] Sprites mods – Miniature Macintosh Plus – Intro
  2. [WayBack] Sprites mods – Miniature Macintosh Plus – Display
  3. [WayBack] Sprites mods – Miniature Macintosh Plus – Driving the display
  4. [WayBack] Sprites mods – Miniature Macintosh Plus – Schematic
  5. [WayBack] Sprites mods – Miniature Macintosh Plus – Software
  6. [WayBack] Sprites mods – Miniature Macintosh Plus – Enclosure
  7. [WayBack] Sprites mods – Miniature Macintosh Plus – Result

Sources: [WayBack] GitHub – Spritetm/minimacplus: Source code, PCB artwork and firmware for a tiny Macintosh Plus

–jeroen

 

Posted in 68k, History | Leave a Comment »

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