TandyAssembly 2025 happened this weekend and they were lightning quick on getting some of the talks online.

Downpoly

Joel Hillard

Tandy Assembly 2025 – Beyond 512kB: Enhancing the CoCo Memory Management Unit

Jim Brain

Tandy Assembly 2025 Tech Talk – Exploring 513: A Technical Look at VIS

Christopher Hyzer (TJBChris)

Tandy Assembly 2025 Tech Talk – Building Modern Accessories for Vintage Computers for Fun and Profit

Jeff Birt (Hey Birt!)

Tandy Assembly 2025 Tech Talk – Rebuilding the TRS-80 Model I: A Reverse Engineering Journey

Marcel Erz

Tandy Assembly 2025 Tech Talk – The MIDI/80 and Software

Joel Hilliard

Tandy Assembly 2025 Tech Talk – CP/M on the TRS-80: An Introduction

Tim Halloran

I turned Claude.AI on my three search pages and let it update them to a modern look as well as to handle responsivity in the results pages.

• Software Search
• Magazine Search
• Catalog Search

Now they don’t look or act as dated as the rest of the site does.

TRS8Bit – Vol 19, No. 3

Click To Enlarge

Dusty writes:

In this edition, Ian Mavric has the final details for the September Tandy Assembly, asks “what now” when you’ve bought a Model 2000, and has a review of the recent VCF-SW he attended. Vince Otten continues with part 3 of his fantastic series “Power of the ROM”, and reviews the language, APL. (This was available for the M1!). E.T. Fonehume provides a one-liner BASIC program to suit the requirements of modern-day passwords. There’s more development in ‘News from France’ from Pascal Holdry. Egoitz Campo sends in a review of the recent TRS-80 Basque Tournament. It seems LINUX is having a birthday. We’re asking if you have any ideas for the 2026 competitions. There’s a sad Obit. for Matthew Reed. A quick check on the U.K.’s Ebay bargains, a ‘just for fun’ maze puzzle and finally, a M1 upgrade I came across while ‘Surfin the Net’ (looks fantastic!).

You can download it from https://www.fabsitesuk.com/tandy/trs8bit1902.pdf or an OCR’d version here.

Randy Kindig, of the Floppy Days Pocast, was kind enough to provide a scan of Twin Cities TRS-80 Users Group Vol 5 No 7.

Title: Twin Cities TRS-80 Users Group Vol 5 No 7
Publisher: TCTUG
Year: 1985
Size: 4,551,431
Pages: 10
NOTES: 1985-07

Title: Maxletter Issue 9
Publisher: Lobo Systems
Year: 1987
Size: 2,049,682
Pages: 6
NOTES: 1984-August

Thank you, Randy.

David S bought ANOTHER copy of the book, just to complete the missing pages 37-38. They have been integrated; so if you downloaded this previously, you should do it again.

Title: Basic Computer Games Volume I TRS-80 Edition
Publisher: David Ahl – Creative Computing
Year: 1979
Size: 36,612,228
Pages: 194
OCRed: Yes

Thank you, David.

KiwiSinceBirth has updated his compilable source for the Model I. It is compilable with Telemark Assembler includes v1.2, v1.3, and EACA (selectable by #DEFINES). The following customizations are included:

• Enables the FreHD auto boot feature, i.e. the Auto boot ROM.
• Disable the use of memory mapped hardware at 37Exh, Floppy disk, Printer, etc. for machines where these peripherals are not needed (e.g. in a FreHD only system) and allows the use of the 2kb memory 3000h – 37FFh
• Set NMI (reset) as always perform a hard reset instead of returning to READY on non-DOS systems
• Disable Alpha character translation of letters A-Z,a-z to the values on range 00h to 1Fh. This is useful when a lower case mod is installed, but an alternate video driver has not been installed, or where the font rom on the machine has the alternate characters in the 00h 1Fh range (0471h)

You can find the Github here.

George Phillips was kind enough to point me to a dump of the Yahoo TRS-80 groups from Archive.Org. I hope to go through it and see if anything is worth adding.

For now, here are some manuals which were turned into HTML, which I turned into PDF’s

Title: Grand Prix 80
Publisher: Rick Maurice – Melbourne House
Year: 1982
Size: 331,315
Pages: 3
OCRed: No

Title: Martian Patrol
Publisher: Rick Maurice – Melbourne House
Year: 1982
Size: 469,517
Pages: 3
OCRed: No

Title: Space Attack
Publisher: Clifford Abrahams – Melbourne House
Year: 1982
Size: 453,035
Pages: 3
OCRed: No

Title: Wild West
Publisher: Clifford Abrahams – Melbourne House
Year: 1982
Size: 428,854
Pages: 3
OCRed: No

Title: Air Raid
Publisher: Small System Software
Year: 19xx
Size: 213,178
Pages: 3
NOTES: HTML to PDF

Title: Airmail Pilot
Publisher: Instant Software
Year: 19xx
Size: 355,333
Pages: 1
NOTES: HTML to PDF

Title: Ball Turret Gunner
Publisher: Instant Software
Year: 19xx
Size: 414,985
Pages: 5
NOTES: HTML to PDF

Title: House of Thirty Gables
Publisher: Bill Miller – Instant Software
Year: 19xx
Size: 259,374
Pages: 2
NOTES: IS0219R / HTML to PDF

Title: Oil Tycoon
Publisher: Instant Software
Year: 1979
Size: 662,952
Pages: 6
NOTES: IS0023R / HTML to PDF

Title: Packer
Publisher: Cottage Software
Year: 1979
Size: 213,589
Pages: 4
NOTES: HTML to PDF

Title: Pinball
Publisher: John Allen – Acorn
Year: 1980
Size: 249,228
Pages: 3
NOTES: HTML to PDF

Title: Slag
Publisher: Stewart Eastman – Adventure International
Year: 1980
Size: 562,464
Pages: 4
NOTES: HTML to PDF

Title: Space Invasion
Publisher: Author Unknown
Year: 19xx
Size: 192,068
Pages: 1
NOTES: HTML to PDF

… and some hardware manuals

Title: Aerocomp Disk Drive Installation Hint Sheet
Publisher: Aerocomp
Year: 19xx
Size: 1,111,760
Pages: 4
OCRed: Yes

Title: Aerocomp Model III and Model 4 Floppy Disk Controller Installation Instructions
Publisher: Aerocomp
Year: 19xx
Size: 1,494,066
Pages: 8
OCRed: Yes

Title: Network Controller 3 Operation Guide
Publisher: Radio Shack
Year: 1981
Size: 1,640,338
Pages: 12
NOTES: 26-1212

Title: Omikron Mapper Owners Manual
Publisher: Omikron
Year: 1980
Size: 2,207,388
Pages: 38

Title: TRS-80 Model I Preliminary Users Manual
Publisher: Radio Shack
Year: 19xx
Size: 822,707
Pages: 30
NOTES: 30 Pages

… and some catalogs

Title: Lichen Software Catalog
Publisher: Lichen Software
Year: 19xx
Size: 1,278,721
Pages: 21

Title: Mayday Center Catalog
Publisher: Mayday Software
Year: 19xx
Size: 281,824
Pages: 6

Title: Smallsystem Center Catalog
Publisher: Smallsystem Center
Year: 19xx
Size: 342,654
Pages: 6

… and some service manuals/procedures/schematics

Title: Expansion Interface Testing
Publisher: Radio Shack
Year: 1978
Size: 4,337,392
Pages: 10
NOTES: 1978-04-18 / Testing Procedures for Production Line Repair Technicans and Workflow Diagram

Title: TRS-80 Model I Prelimiary Service Manual
Publisher: Radio Shack
Year: 1977
Size: 5,198,347
Pages: 10
NOTES: 1977-11 / TRS-80 service manual consisting of only 10 pages

Title: TRS-80 Model I Preliminary Schematics Rev A
Publisher: Radio Shack
Year: 1977
Size: 15,798,791
Pages: 7
NOTES: 1977-09-22 / With Designer Handwritten Corrections

Title: TRS-80 Model I Preliminary Schematics Rev B
Publisher: Radio Shack
Year: 1977
Size: 13,808,839
Pages: 7
NOTES: 1977-09-22 / With Designer Handwritten Corrections

Title: TRS-80 Model I Testing Procedures
Publisher: Radio Shack
Year: 1977
Size: 5,785,046
Pages: 7
NOTES: 1977-09-09 / Testing Procedures For Tandy Production Line Repair Technicans

Title: Model 4 European Patent
Publisher: Radio Shack
Year: 1984
Size: 1,561,257
Pages: 62
OCRed: No
NOTES: PAL formulas

The Australian TRS-80 Microcomputer News page has been updated to include Volumes 3, 4, and some of 5.

Thank you Gonk23 for the heads up and the issues!