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How to start Smalltalk-80 on a Lisa 1
stepleton:
I mentioned maybe around a year ago that I would share more information on how to run the copy of Smalltalk-80 on Bitsavers on a Lisa (Lisa 1 required for now; the disk images are for Twiggy disks). I forgot to do that, but hopefully better late than never.
1. Boot the Lisa into Monitor version 11.6. (Even though the disk image is called 11.8, the version string shown on the command line is 11.6; not sure which is accurate.) Note that Monitor 12.x will not work.
2. Type F for F(ile.
3. Insert your Smalltalk twiggy into the other Twiggy drive.
4. Type P for P(rfx.
5. At the "Prefix titles by what vol ?" prompt, type "DIAG:" (no quotes) and press return.
6. Type Q for Q(uit.
7. Type X for X(ecute
8. At "What file ?" type "smalltalk" and press return. You should see
--- Code: ---Running...
Object file BCI.OBJ loaded at 146310.
Symbols for BCI loaded at 141394.
Hit <Return> to execute Smalltalk-80.
--- End code ---
9. So do that, hit return. Now you have a wait ahead of you as the computer loads an entire Smalltalk image into RAM. This occupies most of the Smalltalk disk in a contiguous block spanning both sides of the disk, so if your drive is not in good working order, this is one way to find out. Read errors cause the Lisa to crash.
10. Otherwise, you should see this: https://photos.app.goo.gl/hyWw4GWzN2sj3W596 . Note that loading continues for some time after the screen is loaded from disk.
Once loaded, it is helpful to know that this Smalltalk was designed for computers with three-button mice. The buttons were identified by colour. The "red button" is your ordinary Lisa mouse button. The "yellow button" is the Apple key and the "blue button" is either option key.
Anyway, from here you are on your own; I don't know enough about Smalltalk to offer further guidance. It's very slow, so you will need to be patient! If you get lost or stuck, it's no big deal --- the Monitor doesn't need to be "shut down" I don't think, and Smalltalk only makes changes to RAM unless you quit out of it. (In which case I believe it dumps the entire image back to disk. I haven't tried it, though.)
stepleton:
Might be worth adding that I think it's pretty likely that this Smalltalk is the implementation described in the paper "An MC68000-Based Smalltalk-80 System" from Smalltalk-80: Bits of History, Words of Advice (1983), pp. 175-187 (PDF pages 183-195), or maybe a descendant of that system.
The book would have been compiled in '82 or early '83, I think, and so it's maybe unsurprising that the paper mentions that it makes use of "a series of experimental Motorola MC68000-based computer systems" --- I presume that the paper's authors didn't want to tip people off about Lisa at the time.
rayarachelian:
Excellent!
compu_85:
The original link to the paper is dead, however the WayBack machine has it:
https://web.archive.org/web/20150224220359/http://sdmeta.gforge.inria.fr/FreeBooks/BitsOfHistory/BitsOfHistory.pdf
"Rick Meyers and Dave Casseres of Apple Computer provide an interesting set of analyses of their MC68000-based implementation.
Copyright Apple Computer Inc., 1982. All rights reserved."
--- Quote ---Apple Computer began its Smalltalk-80 research project in early October 1980. The project has been staffed by one engineer (Rick Meyers) and, for about half of the last 18 months, by a technical writer (David Casseres). Apple has consistently viewed Smalltalk as a research effort, and has afforded the project the freedom from schedules and from marketing considerations that allows research efforts to thrive.
Our Smalltalk-80 implementation has been running since April 1981 on a series of experimental Motorola MC68000-based computer systems. The Smalltalk-80 virtual machine described in this paper is a straightforward translation of the Xerox virtual machine specification to 68000 assembly language.
--- End quote ---
--- Quote ---Performance measurements are included here to allow comparisons with other Smalltalk-80 implementations. These measurements were made on a single-user Motorola MC68000-based system with the system clock running at 5 MHz. (A 4-byte register-to-register add takes 1.6 microseconds. A 4-byte move from an absolute memory location to a register takes 3.2 microseconds. CPU memory accesses and display memory accesses are synchronized, slowing the CPU by 10-15%). The measurements are a snapshot of work in progress as of July 1982.
--- End quote ---
The dates on this are interesting to me. Job's / Apple's Visit to PARC was in december 1979. It sounds like as soon as there was some viable Lisa hardware Meyers started working at getting Smalltalk to run on it.
-J
compu_85:
FWIW, here's Rick's Linkedin. https://www.linkedin.com/in/rick-meyers-26a53a/ He mentions getting Smalltalk going on the Lisa!
--- Quote ---Engineer / Engineering Manager
Apple Computer
1980 - 1991 - 11 Years
Cupertino, CA
Implemented drivers for Lisa's keyboards, mouse, display, cursor, speaker, clocks, and calendar. Working with Bill Atkinson, helped develop Apple's vision for tablet systems. Implemented Smalltalk on Lisa and Macintosh. Led the design and development of MPW (Macintosh Programmer's Workshop) from initial conception through delivery of MPW 1.0. Proposed Apple's investment in compiler technology. Built a team of talented compiler engineers. Led the design and development of a family of portable, re-targetable, optimizing compilers written in C++ using object-oriented design and implementation techniques. Moved this project to Taligent at Apple's request.
--- End quote ---
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