Unanswered Questions

185 questions with no upvoted or accepted answers
19 votes
0 answers
997 views

Oxford C compiler for Commodore 64

I kept one floppy from my Commodore 128 (which I used mostly in C64 mode), labelled ‘Oxford C compiler’. It is a 5.25″ floppy. Don't ask me why I kept just this one; probably because I thought I ...
16 votes
1 answer
490 views

When was an image of an apple first used to promote the APL language

The APL community is contemplating the adoption of a common logo but some are worried about trouble from Apple lawyers. Now, IBM and others have been using apple motifs in promoting APL for a long ...
15 votes
0 answers
349 views

Uninstalling OS/400 by deleting one program

This is about the AS/400 which is an IBM mini-computer launched in 1988. It lives on today after several name changes and considerable hardware and software changes. It is still often informally ...
15 votes
1 answer
399 views

Why did the 8080's PUSH PSW write one reserved bit as 1 and the other two as 0?

The x86 "flags" register, which holds condition codes and other processor status bits, has several reserved bits with fixed values, but these fixed values are not all the same. In ...
14 votes
0 answers
390 views

When and where was the ‘dotted sequence of integers’ version numbering scheme invented?

Probably the most widespread software version numbering scheme in use today takes the form of a dotted sequence of integers. Variants of this scheme usually share the following characteristics: ...
13 votes
0 answers
188 views

68060 CLKEN and CLK pins

Using an 68060 to 68040 Amiga adapter on another brand. The adapter ties the 68040 BCLK to the 68060 CLKEN. The CLK pin on the adapter is left floating. To run the CPU with 1/2 bus will I need to ...
13 votes
0 answers
471 views

What is the protocol for bootstrapping a Game Boy Advance over a link cable?

One of my favorite features of the Game Boy Advance growing up was the ability for some games to be played multiplayer with just one cartridge - the first player would have the cartridge and all the ...
13 votes
0 answers
356 views

Unix on the H11?

I'm curious if anyone is aware of actual uses of Unix on the Heathkit H11? I don't see any technical reason a memory-expanded H11 couldn't run Unix, but can't find any examples of it doing so.
13 votes
0 answers
518 views

Who owns the intellectual property of Thinking Machines today?

Who owns the intellectual property regarding the Connection Machine and other products from Thinking Machines? I believe the remnants were bought by Sun, so possibly Oracle, but does anyone know?
13 votes
0 answers
451 views

Is there a simple BASIC program that demonstrates SID6581 distortion?

Many songs use a SID6581 design "flaw", distortion, as an effect. I tried experimenting with the filter and resonance registers, but was unable to reproduce the sound. What conditions are necessary ...
13 votes
0 answers
856 views

In search of.... SeaWar -- NOT Battleship!

Hopefully, sufficient background Many years ago (40-45), I used to play "Sea War" on a good sized time-share system. It was a text/adventure war game between a couple remote players, played over a ...
11 votes
0 answers
336 views

Was the RPL language for the Commodore PET ever used other than by its author?

Note that this question is about the programming language RPL for the Commodore PET, not the HP language with the same name. RPL was developed by Tim Stryker and sold through his company Samurai ...
10 votes
1 answer
524 views

1990s BBS game featuring mining elements from a planet

Sometime in the 90s (sorry, can't be more specific) I used to dial in to a BBS and play a multi-player game that involved manually mining elements from a planet. It was very detailed, you got employed ...
10 votes
0 answers
182 views

Which versions of StuffIt introduced backwards-incompatible changes to the file format?

In order to help people who want to integration-test tools which shell out to The Unarchiver's lsar and unar utilities, I'm trying to build a legally clean repository of test archives in StuffIt SIT ...
10 votes
0 answers
233 views

What happened to the Speakeasy computational environment?

After reading his interview with the Computer History Museum , Cleve Moler (creator of MATLAB), mentioned that the Speakeasy Computational Environment was a precursor to MATLAB, and served as some ...

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