Questions tagged [software-development]

For questions about the software development process on retrocomputing platforms

Filter by
Sorted by
Tagged with
36 votes
11 answers
7k views

When did assembly source code begin to be written in lowercase?

In nearly all the assembly source files and published listings I read up to the early 1980s, the labels, mnemonics, and operands were written in all uppercase. Just a few years later, I noticed 80x86 ...
user avatar
3 votes
0 answers
187 views

What would "Special Makeup" design have been in the 1988 arcade game, Splatterhouse? [closed]

Upon beating the Namco arcade game Splatterhouse, released in November 1988, the following is shown in the credits along with the expected programmers and artists: SPECIAL MAKEUP DESIGNED ...
user avatar
10 votes
4 answers
1k views

Anecdote in Weinberger's Psychology of Computer Programming: is it ARPANET?

Gerald Weinberger, in the 1971 book The Psychology of Computer Programming, gives the following anecdote: The numerous stages [of reporting?] can produce interesting effects, as a result of filtering ...
user avatar
  • 1,552
5 votes
2 answers
400 views

ResEdit Decompilers

What de-compilers were available for ResEdit? A friend used a de-compiler to break the copy protection on F/A-18 Hornet and I remember having one to examine how programs worked. To clarify by de-...
user avatar
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: ...
user avatar
  • 16.4k
11 votes
5 answers
1k views

Belated ascendancy of dynamic linkers

Old computer systems were supplied—by our present notion—with very little memory, thus conservation of both RAM and storage room has been tremendously important during those years of austerity. ...
user avatar
4 votes
1 answer
144 views

How do I detect if AmigaDOS dos.library/CurrentDir() fails?

It seems that the primary system call to change a new directory within an Amiga process is dos.library/CurrentDir(lock) but the documentation does not tell me how to detect if it succeeded. Quoting ...
user avatar
  • 1,689
5 votes
1 answer
398 views

What HyperCard extensions did Myst use?

The original Macintosh version of Myst was written in HyperCard. According to https://news.ycombinator.com/item?id=20549685 Adding useful features, such as uploading those HTML files to a web server, ...
user avatar
  • 48.8k
5 votes
1 answer
359 views

What size was the Microsoft Internet Explorer team?

According to Joel Spolsky, I will give the Internet Explorer team credit. With IE versions 3.0 and 4.0 they probably created software about ten times faster than the industry norm. This had nothing ...
user avatar
  • 48.8k
40 votes
4 answers
6k views

How did Woz write the Apple 1 BASIC before building the computer?

According to his 1984 interview with Byte magazine, Steve Wozniak created the BASIC for the Apple 1 computer before he actually built the computer: I sat down and wrote the BASIC first, and that took ...
user avatar
  • 13.8k
3 votes
1 answer
207 views

Porting of software from the m68k family architecture to the DEC VAX

I am looking for impressions, memoirs, articles, guidelines - everything that is possible about the unusual direction of software migration. I am interested in non-Unix related code, and preferably ...
user avatar
9 votes
3 answers
499 views

What source-code management tools were available for Classic Mac OS development?

I've been reacquainting myself with classic Mac OS programming (e.g. the Toolbox, MacsBug, THINK Pascal/C, etc.) and became curious how software engineering best practices were ...practiced... using ...
user avatar
9 votes
1 answer
730 views

How did old car games, using "sprite illusions", function on a technical level?

Example: https://youtu.be/E9QJZSBpvg0?t=80 The road turns not only left and right, like in the classic Pole Position, but also goes up and down. Other than the cars and the road, there are numerous ...
user avatar
  • 91
2 votes
0 answers
120 views

Who did what exactly for the original Shadowgate (1987) Macintosh video game? [closed]

I primarily know Shadowgate from the wonderful NES port, which was ported by some Japanese company and whose Japanese musician composed the beautiful, iconic music which I frankly thought was there ...
user avatar
4 votes
1 answer
341 views

Whatever happened to the Refal language?

Refal is a language from the 1960s that is based on the concept of pattern-matching with many features that could be considered advanced even today- it is functional, garbage collected, and supported ...
user avatar
18 votes
2 answers
2k views

Is there a Commodore 64 emulator that can profile running code?

I am developing some software for the Commodore 64, and I am concerned about its runspeed. Is there an emulator that can report, after running my code, where exactly it spent most of its time? I'm ...
user avatar
  • 33.6k
14 votes
12 answers
4k views

Late 1970s and 6502 chip facilities for operating systems

I'm quite unfamiliar with how operating systems used to be written but its clear to me that operating systems were clearly written for these systems. I'm particularly interested in how operating ...
user avatar
  • 251
7 votes
4 answers
3k views

Library of MS BASIC programs in text format?

I am wondering if anyone has a pointer to a good source of "classic" BASIC programs, in text format. One would think this would be easy to find, but unfortunately VB so pollutes the results as to ...
user avatar
8 votes
5 answers
928 views

Source Code Archival in early Game Developement

During the latest gaming press release, Square Enix released remastered versions of all of the classic Final Fantasy games excluding Final Fantasy VIII. The alleged reason is due to the lost source ...
user avatar
  • 919
2 votes
1 answer
249 views

ISVs in the mainframe and minicomputer eras

In the eighties, there was a vast flowering of small independent software companies. Business and productivity software for the IBM PC, all manner of novelties for the Macintosh, games for the ...
user avatar
  • 48.8k
33 votes
2 answers
7k views

How did people program for Consoles with multiple CPUs?

I'm specifically interested in the Sega Mega Drive/Genesis, which used a 68000 CPU, but also a Z80, mainly used to control the sound hardware and provide backward compatibility with the Master System. ...
user avatar
  • 525
12 votes
3 answers
2k views

Did CP/M support custom hardware using device drivers?

MS DOS Ver 1.0 did not have OS support for device drivers. DOS ver2 added support for device drivers in the config.sys file during boot with the "DEVICE=[path][filename][parameters]". Did CP/M have ...
user avatar
  • 4,281
79 votes
12 answers
18k views

Back in the late 1980s, how was commercial software for 8-bit home computers developed?

When hobbyists wanted to write software for e.g. the Commodore 64, they either used the built-in BASIC interpreter (with all its limitations) or some native tools, like compilers for other languages ...
user avatar
  • 1,424
7 votes
2 answers
2k views

What was the dithering algorithm used in Sierra and LucasArts games?

I am trying to write a program in C# that will re-create the type of dithering used in many of the old Sierra and LucasArts games. I have looked up many different dithering algorithms and none seem to ...
user avatar
  • 171
5 votes
3 answers
2k views

Were some Atari 2600 games written in C?

I thought all Atari 2600 games had been programmed in 6502/6507 assembly language (plus whatever activated the Stella sound system), but at a party recently, a friend indicated that some 2600 ...
user avatar
28 votes
9 answers
7k views

What was the first mainstream advanced debugger?

What was the first mainstream development toolchain that provided advanced debugging facilities? By "mainstream" I mean something that was available on home computers, not mainframes or super-...
user avatar
  • 1,478
15 votes
8 answers
2k views

Developing an application in the era of cassette tapes (audio-tapes)

My colleague and I have just had a conversation and we were wondering how the process of developing an application was done in the era of cassette tapes. Today we have HDDs, backup HDDs, FTPs, ...
user avatar
14 votes
4 answers
6k views

What was computer "Fuzzy" logic?

In the mid 1980's computers began to be advertised as having or being capable of "Fuzzy" logic. How was "Fuzzy" logic added to a computer and what was it suppose to do better than a computer without ...
user avatar
  • 4,281
11 votes
2 answers
1k views

What modern image editors support non-square pixels?

Almost all old home computers tend to offer non-square pixels, from wide-pixel graphics modes on the C64/CPC/BBC Micro to CGA's weird not-quite-square 320x200 mode with a pixel aspect ratio of 5:6. ...
user avatar
  • 303
13 votes
2 answers
1k views

What is the history of the PDP-11 MARK instruction?

The PDP-11 MARK instruction was intended to be used as part of the standard PDP-11 subroutine return convention. MARK facilitated the stack clean up procedures involved in subroutine exit. To use it, ...
user avatar
  • 15.4k
5 votes
0 answers
345 views

Link N64 object file while preserving relocation data

The N64 SDK provides the makerom tool to create a ROM image given a file describing the ROM layout called spec and the various object files it refers to such as the N64 OS, RCP microcode, and the game'...
user avatar
  • 51
17 votes
9 answers
4k views

What caused the demise of BASIC/BASICA in the late 1980's?

While not strictly adhered to, this is somewhat of a generalization of computer listings found in the more popular magazines of the time - BYTE, Kilobaud, PC Computing, etc. This explains the ...
user avatar
  • 4,281
21 votes
5 answers
5k views

Was it feasible to create Win16 software using pre-existing DOS development tools?

It seems that right from the outset, the plan for Windows development was that it would be done with a separate set of compilers specifically equipped for that purpose. The Windows SDK comes with ...
user avatar
  • 688
34 votes
4 answers
17k views

Who is credited for the creation of Assembly Language?

The C Programming Language was originally developed by Dennis Ritchie who also co-designed the Unix operating system with which development of the language was closely intertwined. Is there a ...
user avatar
  • 4,281
19 votes
2 answers
750 views

When did README files start showing up in software?

Everyone knows how important documentation is -- for a project to grow past a certain point, it's a must-have. However, almost every software project of any size nowadays comes with at least a README ...
user avatar
  • 653
9 votes
2 answers
1k views

Has any major corporation ever successfully sued Microsoft for intellectual property theft?

It is generally agreed that Microsoft stole parts if not entire blocks of intellectual property from Digital Research, Xerox, Apple, and several other major corporations. To keep it simple, lets ...
user avatar
  • 4,281
21 votes
8 answers
2k views

Which BASIC interpreters support techniques for hybrid programming in Assembly?

It was common with Commodore BASIC (and others, I'm sure) to have machine language encoded in BASIC programs using POKEs or READ/DATA. This was needed for both performance and to access certain ...
user avatar
  • 56.5k
8 votes
1 answer
778 views

How was the Traf-O-Data 8008 simulator developed?

Traf-O-Data was the first business partnership between Paul Allen, Bill Gates and Paul Gilbert. In order to develop the software for their custom-built Traf-O-Data machine (Intel 8008 Inside™), ...
user avatar
  • 16.9k
7 votes
1 answer
1k views

How was the Microsoft PDP-10 8080 emulator developed? [closed]

Altair BASIC, the first version of Microsoft BASIC, was developed using an Intel 8008 emulator, modified to emulate an Intel 8080, running on a PDP-10 computer. This emulator was originally designed ...
user avatar
  • 16.9k
6 votes
1 answer
646 views

What is the title of this Macintosh programming book?

Back when Mac OS was called "System" and preemptive multitasking was a distant fantasy, I had a small collection of Macintosh programming books. For the life of me, though, I can't remember what one ...
user avatar
9 votes
3 answers
3k views

How to develop software for the Commodore 64 with VICE?

I see a very large fan-base and hear a lot (especially here on retrocomputing) about how great the Commodore 64 was. Growing up in the Windows 95/98 era, I seemed to have missed a great era for ...
user avatar
  • 2,277
15 votes
1 answer
1k views

Was there a 'git' in the 1990s?

I seem to remember using a source code control system back in the early- to mid-1990s called git. Am I nuts? I used to work at IBM way back then. We didn't use it for a big project, but I distinctly ...
user avatar
79 votes
9 answers
25k views

How were the first ZX Spectrum games written?

Being a child of the 80s I loved my ZX Spectrum, did my best to learn BASIC but I felt like the games I was playing (Jetpac, Dizzy, Renegade etc) were perhaps not written using BASIC. I wondered: how ...
user avatar
  • 1,037
16 votes
3 answers
1k views

Are there any public tools for the TMS34010?

I am interested to learn about the Texas Instruments TMS34010, a 32-bit fully functional CPU with built-in graphics manipulation capabilities, which appeared in Atari's Hard Drivin' arcade boards ...
user avatar
  • 1,732
8 votes
5 answers
691 views

How did software engineers test their code in 19xx? [closed]

There is a plethora of tools available for engineers to test their code these days. However, frameworks like Mocha.js came around only in 2011 with the ascent of NPM. So I wonder what were the ...
user avatar
  • 181
8 votes
1 answer
161 views

cbm prg studio for the Amstrad

CBM prg studio is brilliant. I have searched Google for a version (or something similar) for the Amstrad CPC 464, to no avail. Does anyone know of one?
user avatar
11 votes
3 answers
971 views

Was the PDP-11 coroutine instruction actually used?

In a typical description of the coroutine mechanism it usually mentioned that the PDP-11 instruction set provided a way to effect the coroutine switch by a single instruction, namely JSR PC,@(SP)+. ...
user avatar
  • 15.4k
20 votes
1 answer
886 views

When was the relocatable object module invented?

During the time when programming was done in machine codes, there was no need for object modules; it just wouldn't make sense. People would write the whole program they needed to run in "zeroes and ...
user avatar
  • 15.4k
8 votes
0 answers
380 views

Who and how worked on games in 80's? [closed]

As a developer in a team, I am used to some techniques and workflow, like using git, issue trackers, linters, common ways to discuss the structure of the code, the ways to debug and refactor code. I ...
user avatar
4 votes
1 answer
224 views

Include c files using z88dk

I want to split a program developed in c using z88dk in several .c files and I do not know how. I have these files: test.c: The main file with the "main" method. test2.c: An auxiliar file with the "...
user avatar
  • 231