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Read articles about the TI99/4a.
This web page contains links to a good collection of articles on this web site, of interest to users of the TI99/4a computer and its emulators. The vast majority of the articles have been extracted from user group magazines published in England. Quite a few of the articles were written by me. Although these pages do not seem to have any visitors, I am persisting with adding more articles where the magazines are not to be found elsewhere on the Internet.

What's new?

UK magazines for users of the TI-99/4a Home Computer
What UK magazines were there about the TI99/4a?

TIdings was the magazine of the original UK TI99/4A User Group (TI Home) originated by Paul Dicks - articles appear below.

TI*MES was a user group magazine originally produced by Clive Scally which was the effective descendant of TI Home and ran and ran for many years - articles to be found below. From issue 16 Clive handed the running over to voluntary committee management.

TI Home Computer Users Club was a commercial thin magazine arranged by Texas Instruments for UK TI99/4A users, to take over from TI HOME which was being swamped. First magazine. It was produced by a PR company and its fate was sealed when TI immediately stopped selling the computer. whtech.com has issues 1 to 4 in pdf format - issue 1 as Autumn 1983-1, issue 2 as 1984 Winter, Issue 3 twice, as Autumn 1983-2 and Autumn 1984, and Issue 4 as Winter 1985.
I have issue 5 of the TIHCUC magazine which was very thin- three pages of adverts and five of "editorial". It did say the mailing list was being passed to someone in Glasgow who would continue support- but nothing was ever heard of them. I can't OCR it but have made it available as an ODT (Open Document Text- but it contains embedded images not text) file or separate jpg images.

TI-USER was a small magazine for UK TI99/4a users published by a retailer (Galaxy) in Maidstone.
The first issue of TI User || TI-user issue two | | TI-User Issue 3
I also have issues 4 and 5 but the print copy is not good enough for me to use here.

TI-LINES was a privately produced magazine for UK TI99/4A users produced by Peter Brooks then in Oxford.
From 1984: Issue 3 of TI-Lines | | Issue 4 of TI-Lines
As I can't contact Peter for consent to republish here, and have more work to OCR than I can manage anyway! I will leave it at two sample copies, the absence of more should not be considered in any way negatively.

Parco Magazine was another retailer produced magazine from Parco of Honiton. Issue One was the one and only joint venture magazine with Albert Visser of Holland (with contents mostly from Holland) but as things didn't work out, from issue two it was a production of Parco.
Originating in the English language this time, Issue 2 of Parco Magazine, most of the content was fairly unreadable listings, which I have had to omit- I was never able to read them. I do have additional copies, but I am not able to OCR them.

Finally- the United States Air Force was protecting us, and provided a good market for US products such as the TI99/4a. From one US air base in England came the magazine of the East Anglia Region 99ers. whtech.com have 15 issues from 1987-88.
Many of the copies I have are not scannable, but one article by Colin Hinson from the October/November 1988 issues is worth typing in -
now you can read in detail about the TI disk peripheral system, and read how the 4a stored files on floppy disks. I am not able to contact the publishers for consent to add more material so this sample will have to suffice. Some of their copies would not OCR but there was much interesting material. I also have a very incomplete set.

TIdings from TIhome TIdings and TI*MES both initially contained a considerable amount of technical and programming information and continue to be goldmines for users of the emulators.

TIdings 1981 First ever three issues of the UK User Group Newsletter TIdings, from way back in 1981.
TIdings July 1981- issue 4. Large article on Boolean operators and various news.
TIdings September 1981- issue 5 with the first news of the hidden Basic commands Call A and Call D.
TIdings December 1981 - issue 6 full of historic hints and tips for owners of the TI99/4a computer (and now, its emulations).

Summary of TIdings 7 to 9 (1982) - to cut down the irrelevant material, I'll move on to quoting relevant historic and technical matters from later issues. The ninth issue was Volume 2 Number 3.

Rambles from TIdings issue 10, August 1982 including A program that rewrites itself, Using a Personal Record Keeping database with TI Basic, Using a PRK datafile to hold array values, Graphics Mode 3 and Range and accuracy of Call Sound

Rambles from TIdings Issues 11 and 12 October and December 1982 including hints on program debugging.

TIdings March 1983, (Volume 3 Number 1) - almost all of the March 1983 issue of TIdings split into five parts:
Part One includes Babbling Brooks, Beginners Basic (If Then Else) and an introduction to 9900 Assembly Language.
Part Two includes Programming For-Next Loops and is mostly written by Peter Brooks.
Part Three Mostly Rambles by Stephen Shaw, includes the differences between the 99/4 and the 99/4a, saving data (not programs) to cassette and to minimemory; using sprites in TI Basic; a program that writes itself; reviews of Mindstorms and Cubic Circular; and first words on the 99/2 and the CC-40 (which did not make it to market).
Part Four | Part Five

whtech.com has TIdings in pdf format for the issues of Oct 1982, December 1982 and March 1983.

whtech.com has TI*MES in pdf format for Issue 1 (Summer 1983), issue 7 (Winter 1984), issue 9 (Summer 1985), and issue 10 (Autumn 1985).

Rambles from TI*MES by Stephen Shaw

Rambles first appeared in TIdings and then transferred to TI*MES from issue 2, and was then in almost every issue for many years. Issues without Rambles were typically due to delays in the delivery of previous editions leading to too short a time to submit fresh material, or later, changes in the editor (and where to send copy) that I was not aware of. Below this paragraph will be the Rambles part of TI*MES, although some parts may be omitted due to being utterly irrelevant, or incapable of OCRing. I may have to include sections from other parts of TI*MES for Rambles to make sense.

Rambles did not appear in TI*MES 1.
Rambles from TI*MES 2, Autumn 1983.
Rambles from TI*MES 3, Winter 1984. published January 1984, the first issue following TI's withdrawal from the market. This page includes an article by Howard Greenberg (of Arcade Hardware) commencing the history of the Thorn-EMI modules, and a rare article by Ian Godman (of Christine Computing) on flowcharts.
Rambles from TI*MES 4, Spring 1984 including the second part of Ian Godman's article on flowcharts.
Rambles from TI*MES 5, Summer 1984, including a report of a real genuine Thorn EMI module, and an application of the PRK extra calls.
Rambles from TI*MES 6, Autumn 1984 includes a major detailed article on producing SOUND with Extended Basic or Minimemory using faster alternatives to CALL SOUND. Lots of reviews.
Extracts from TI*MES 7 from January 1985. Call Sound program from Sean O'Brien and some animated sprites.
Rambles from TI*MES 8, Spring 1985 with major articles on setting up TI Forth, using TI Basic with Minimemory and lots of reviews.
TI*MES 9 Part 1 Summer 1985 UK User Group Magazine - including book reviews, brief TI Forth, TI Logo and SXB items, using less memory in your programs, and a lengthy article on VDP Registers and accessing them in Basic with Mini Memory module.
TI*MES 9 Part 2 - speech hint; disabling quit key; reviews of COMPUTE! books

TI*MES 10 Autumn 1985 - another bumper issue with notes on fractured files and disk repair, using TI Basic POS, DATA, Extended Basic Prescan, Enhanced Basic with PRK, printing graphics with TI Writer, faster trig functions (cos, sin, tan) in Basic and Forth, TI Forth music and speech.
Rambles from TI*MES 11 from Winter 1985/6. Includes an XB scroll down routine, using sprites in TI Basic with no modules or peripherals; using TI Forth inputs and loops; and reviews.
Text from TI*MES 12, Spring 1986. Includes a report of a visit with Myarc, samples of code for TI Logo, TI Forth, TI USCD Pascal, Pilot 99. An Editor Assembler quirk. Using ExBas prescan.
Rambles from TI*MES 13 (Summer 1986) mainly a long article on how to use TI Writer plus a few nuggets on using ram files with MiniMemory and a different description of how the TI stores data on floppy disks (detailed description of sectors 0, 1 and 2).

Rambles from TI*MES 14 mainly a long article on how to use the language c99, plus a first review of the Myarc 512k ram card, and a short graphics routine showing how Myarc XB II used graphics.
Rambles from TI*MES15 mostly a long article on benchmarks including samples of different languages for the TI99/4a, and a very lengthy detailed review of Myarc Extended Basic Version 2.12, plus an article on using data files on cassette and a short handy list of TI Writer Editor key commands.
Rambles from TI*MES 16 (Spring 1987) is a very short entry for this the last issue of TI*MES to come from Clive Scally before The Committee took over. One machine code routine for Extended Basic to search a string array. Novel input of assembly object code using TI Writer. Farewell from Howard Greenberg. Farewell to John Rice. Article by Ray Kazmer on transferring pictures to a TI graphic image.

Rambles from TI*MES 17, 18 and 19. Items from the first three magazines produced by The Committee. Includes: Basic Programming Tips; c99 Oddities: Using #include; Useful CALL LOADs for ExBas; DATA Statements in Basic programs;, copying TI-Forth disks;, how to input a floating point number in TI Forth; lining up display of decimal numbers - Ex Bas; Operating System Oddities - Call Key; controlling Sprites in ExBas using CALL LOADs; Turbo Pasc 99 - an introduction and benchmarks; using Centre Text (CE) with TI Writer Formatter and of course, introducing The New Committee

Items from TI*MES 20 (April-June 1988) - bumper issue covering: Basic: Avoiding IF...THEN; Overusing GOTO; Basic Garbage Collection; On Warning and On Error; Enhanced Basic CALL A and CALL D; Book Reviews: Orphan Chronicles; Beginners Guide to Assembly Language for the TI99/4A; Crash Course in Pascal; Hidden Powers of Disk Fixer and also Fortran; Game News: Diablo; Timeless Software / Ian Martin; Auto load disk menu; Criticisms of Rambles; Tony McGovern writes about Funlweb 4; and Editor Assembler Manual corrections. Phew.

Items from TI*MES 21 July 1988. Items include: What program is (disk file) for?; Caring for magnetic tapes ; Basic: Number correct to N places; Unreadable Display Variable 80 files; Debugging Ed/As file ASSM2; Basic with PRK/Stats- Enhanced Basic Part 2- CALLS: L,P,H,G,S.

Articles from issues 22 and 23 of TI*MES: How an Extended Basic program can tell if Alphalock is down before you press a key; Report on the Alternative Micro Show 1988; Printing with TI Writer or Funlwriter and Controlling the cassette motor and audio.

Major set of articles from TI*MES 24 and 25, Spring and Summer 1989, with lots on basic programming and hi res graphics: Basic Programming: Solving apples and pears problems; Call Sound inaccuracy; Practical programming: playing with digits; Extended Basic very fast colour changing; Writing your own Extended Basic subprograms with samples; TI writer (and Funlwriter) tips; Graphics Demo programs: Peter Maurer Rose Curves; Lisajou Curves and the G language; Barry Martin's Mapping, Hopalong; Chairmans Farewell; Reports on: Bloxwich Workshop April 1989; Alternative Micro Show April 1989; Review: Triton Super Extended Basic; Triton SXB program to print TI Artist pictures. Phew.

Rambles from TI*MES 26, Autumn 1989: Report on Romiley meeting; Programming: Rounding in Basic Functions; Leaving Loops. Graphics Programs: More Martin Mapping; Attractors; Three routines in G; Small Logo routine. Reviews: PagePro; Book Reviews: Armchair Universe; Lisp; Fractals Everywhere; Science of Fractal Images; TI Base

Articles from TI*MES 27: Basic: Faster Basic Programs; Finding Nth root; Compacting Data; Myarc VAL function; Translate PRK data to DV80; Speech and the TI99/4a; Review: TI Sort; 3rd Alternative Micro Show; Graphics Extended Basic Hi Resolution plotting; Freeform Art; Henon Mapping ; Random Stars; Farewell to: John Guion; Guy Stefan-Romano

Items from TI*MES 28, Spring 1990. I have omitted some long listings, but left in a number of module reviews. There is an interesting article on maintaining variable values after BREAKing a program (and also between programs when one program RUNs another one) and a few general comments.

Rambles from TI*MES 29, Summer 1990. The Sevens Problem - and the first two answers; Graphics on the TI with TML: Points on a circle, Ikeda map, Turtle graphics. More games module reviews.

Articles from TI*MES 30: Console Only Corner- Error proofing; Unlistable basic programs and making them listable; Reviews: Tris module; Balloon Wars; TI Base Version 3; Chaotic Bifurcations as Sound; Graphics: Gingerbread Men || Connett Circles

Rambles from TI*MES 31- lots here, especially graphics! Programs for Disk Drives; Fitting and using a load interrupt switch; Puzzles: 50 apples, plus fuel economy; Reported UK user group history; Ed/As module and cassette; BASIC: Switching variable values; Tutorial: user subprograms; ExBas tips: strings, POS, arrays; REVIEWS: Hunchback Havoc; Hang Glider Pilot; Airline; TI Base Utilities; Remind Me; Book: Computers, pattern, chaos and beauty; Rock Runner GRAPHICS routines: Truchet Tiling; Rotate turtle path; Visualise random distribution; Bifurcation plot; Egg tile generation; Random cartoon faces; Connett Circles again; Rotated Random Dots Moire; After Feigenblaum.

(more to come as time permits)

Other Articles Several of these articles are extracted from Rambles, and will be moved to the section immediately above when I get to them again.

Home Computing Weekly ran a full page on TI99/4a supplier Stainless Software (prop: Stephen Shaw) on 6th September 1983. I didn't write the text OR the headline - but you can read it here The Double Life of Stainless Software's supremo

Personal Computer News was a UK weekly magazine that in 1983 printed a couple of articles by me on how the TI99/4a stores its programs internally with some programming tips. I have also added a bit of an Australian review of my book!

TI Computer Languages (written April 1990) : The sevens problem and solutions in Extended Basic, c99, Turbo Pascal, 9900 Machine Code; Computers available in 1982 and 1984 ; How to make a basic program unLISTable ; Why use old computers?.
TI99/4a Graphics: Includes: Tips on programming menu choices; Using the various TI99/4A graphics programming packages with examples; how to use Basic PRINT USING; Jim Peterson's Tips No 65
More graphics, number systems Includes: Hints and Tips from Bill Sponchia; graphics programming listings; Jim Swedlow: TI Bits; and Number systems- hex, dec, bin, nibbles.
Easter Egg
Maths puzzles- program listings. Adding and subtracting fractions, prime numbers, and a math puzzle.
June 99 article (15k)- programming, TI Writer, Module care
Articles by Charles Good and Mike Wright on the TI99/4 and the TI99/4A improvements.
Review of Rapid Copy, JP Drawing, and Addatex software and web site (25k)
Early module programmers- interview with Hank Mishkoff and article on John Phillips (35k).
Pin outs and Addatex-Console pin out details; some hidden program commands and a review of a TI Theme from Addatex.
MBX and Romox MBX Peripheral and MBX and Romox Modules described.

What's New? The following are the latest files to be modified. Latest at the top.
Articles from TI*MES 31 || Articles from PCN 1983 || Articles from TI*MES 30 || Rambles from TI*MES 29
Articles from TI*MES 28 || Articles from TI*MES 27 || Rambles from TI*MES 26, Autumn 1989
Items from TI*MES 24 and 25 || Items from TI*MES 22 and 23 || Items from TI*MES 21 || Items from TI*MES 20
Stainless Software story || Details of how the TI99/4a stores disk data

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