TRS-80 News

February 24, 2026 - Original Model III LDOS Manual / Binder / Disk

So that it doesn't get lost in all the re-listings, one of the items I have up on eBay is for LDOS v5.1.3 for Model III (Original Binder/Manual/Software).

Link is here.

February 21, 2026 - TRS-80 Trash Talk Live # 47 Starts Soon

The next TRS-80 Trash Talk live show is TODAY, February 21, at 6:00PM Pacific Daylight Time / 9:00PM Eastern Daylight Time!

You can watch on the TRS-80 Trash Talk channel: https://www.youtube.com/channel/UCXkGugvdCkpkMDylVQb9gfg

If you want to participate in the live zoom session, reach out to trs80trashtalk at gmail dot com for information.

February 21, 2026 - eBay Auctions

Some items I have on eBay to support the site ...

Books

Description	Item	End Time
TRS-80 Applications Sourcebook, Vol II and TRS-80 Sourcebook for Educators	177881075900	02/28/2026 07:26 AM
TRS-80 Book - TRS-80 Data File Programming for the Model I/III	177880172593	02/27/2026 10:26 PM
TRS-80 Book - TRS-80 Graphics	177880176264	02/27/2026 10:26 PM
TRS-80 Book - TRS-80 Micro Computer Technical Reference Handbook, 1st Edition	177880113237	02/27/2026 10:26 PM
TRS-80 Book - TRS-80 Programming in Style	177880098995	02/27/2026 09:26 PM
TRS-80 Book - TRS-80 Programs	177880097141	02/27/2026 09:26 PM

Software

Description	Item	End Time
TRS-80 Software - LDOS v5.1.3 for Model III (Original Binder/Manual/Software)	177881859809	02/28/2026 02:17 PM
TRS-80 Software - BlackJack and Backgammon - Manual/Tape (Original)	177881093977	02/28/2026 07:26 AM
TRS-80 Software - Scripsit Training Program - Manual/Tapes (Original)	177881080918	02/28/2026 07:26 AM
TRS-80 Software - Upper/Lower Case Driver - Manual/Tape (Original)	177881089564	02/28/2026 07:26 AM
TRS-80 Software - Budget Management (Original Binder/Manual/Tapes	177879888190	02/27/2026 07:26 PM
TRS-80 Software - Business Payroll (Original Binder/Manual/Tapes)	177879770887	02/27/2026 06:26 PM
TRS-80 Software - Cassette Portfolio Analysis (Original Binder/Manual/Tapes)	177879870982	02/27/2026 07:26 PM
TRS-80 Software - Cross Reference Utility (Manual/Tape)	177880070259	02/27/2026 09:26 PM
TRS-80 Software - Keyboard Debounce and Real-Time Clock (Manual/Tape)	177880109395	02/27/2026 09:26 PM
TRS-80 Software - Level II BASIC Instruction Course - Parts 1 and 2 (Original)	177880151811	02/27/2026 10:26 PM
TRS-80 Software - Personal Finance and Business Finance for the PC-2	177880167087	02/27/2026 10:26 PM
TRS-80 Software - Statistical Analysis (Original Binder/Manual/Tapes)	177880133723	02/27/2026 10:26 PM

Other

Description	Item	End Time
Apple II Software - The Word Handler II / List Handler / Spell Handler	177881724443	02/26/2026 01:26 PM

#DEFINE VER12	uncomment this to degrade from V1.3 to V1.2 of the ROM.
#DEFINE VER13	this is the default if VER12 is not defined, and doesnt need to be uncommented
#DEFINE EACA80	uncomment to enable Dick Smith System-80 (EACA) hardware support. NOTE: While not mandatory you should also define VER12 since the System-80 ROM was based on V1.2. V1.3 has not been formally tested, but assume should work, and opens ability to also specify FREHDBT. This only targets the core 12kb ROM, and does not include the latter Rom extensions
#DEFINE FREHDBT	Enables the FreHD auto boot feature, i.e. the Auto boot ROM. This requires version 1.3 ROM as a base, please do NOT define VER12 as it is not compatible (it will be ignored anyway) Consider also enabling NMIHARD to ensure reset (on non-floppy machine) will force a reset.
#DEFINE NMIHARD	Set NMI (reset) as always perform a hard reset. Normally on non-floppy systems NMI performs a soft reset returning to the READY> prompt with the basic program intact. This is useful in system without floppy disk to force a full reset (0066h)
#DEFINE LOWCASE	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)
#DEFINE FASTMEM	Speed up startup memory size check by checking first byte of every 256 page, rather than every byte.
#DEFINE BUGFIX5	Fix Error 5 - 08A7H - INT(DoubleValue) rounding
#DEFINE BUGFIX8	Fix Error 8 - 1009H - PRINT USING, - sign at end of field
#DEFINE PATCH	Includes NMIHARD, LOWCASE, FASTMEM, BUGFIX5, and BUGFIX8`
#DEFINE SIZE16K	Will pad the end of the rom with $FF to 16KB size. useful if want to append multiple ROM images for used in large 16K paged rom
#DEFINE _EMBED	Strip all HW, and IO routines leaving just BASIC language as standalone code and used in L2 Basic for CP/M

#DEFINE NEWBOOT	Enables a new boot routine which asks for "diskette?" when no disk is detected and retries. It also allows for break to be pressed at any time. (Credit : John Swiderski)
#DEFINE FREHDBT	Enables the FreHD auto boot feature, i.e. the Auto boot ROM. This requires version 1.3 ROM as a base, please do NOT define VER12 as it is not compatible (it will be ignored anyway) Consider also enabling NMIHARD to ensure reset (on non-floppy machine) will force a reset.
#DEFINE NOMEMSIZE	Skip user input of Memory Size? override at startup with M key. (Credit : John Swiderski)
#DEFINE FASTMEM	Speed up startup memory size check by checking first byte of every 256 page, rather than every byte.
#DEFINE NMIHARD	Set NMI (reset) as always perform a hard reset. Normally on non-floppy systems NMI performs a soft reset returning to the READY> prompt with the basic program intact. This is useful in system without floppy disk to force a full reset (0066h)
#DEFINE LOWCASE	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)
#DEFINE MSGSTART	Enhanced startup message showing Free Bytes available to BASIC
#DEFINE KEYBOUNCE	Enables the Keyboard debounce routines that where introduced in rev1.3
#DEFINE BUGFIX1	Fix Error 1 - 04F6H - 32 Character Mode Line Length
#DEFINE BUGFIX2	Fix Error 2 - 153EH - Random Number Single Precision Overrun
#DEFINE BUGFIX5	Fix Error 5 - 08A7H - INT(DoubleValue) rounding
#DEFINE BUGFIX7	Fix Error 7 - 0EF2H - Space after type declaration tag
#DEFINE BUGFIX7C	Fix Error 7C - 213DH - Space after TAB token
#DEFINE BUGFIX8	Fix Error 8 - 1009H - PRINT USING, - sign at end of field
#DEFINE BUGFIX11	Fix Error 11 - 2301H - Overflow on Integer FOR loop
#DEFINE BUGFIX13	Fix Error 13 - 1222H - Display of Single Precision Numbers
#DEFINE EACA80	(OPTIONAL) uncomment to enable Dick Smith System-80 (EACA) hardware support. This only targets the core 12kb ROM, and does not include the latter Rom extensions
#DEFINE SIZE16K	(OPTIONAL) Will pad the end of the rom with $FF to 16KB size. useful if want to append multiple ROM images for used in large 16K paged rom

Date:	December 2025
Pages:	84

03	Details of this years Competition winner: congratulations to Bart Jeroen Hemstra, by Unattributed
09	In Mav’s Workshop: On the downgrade to level 1: Fancy running under Level 1? Mav shows us how!, by Ian Mavric
16	Power of the ROM: Vince continues his series with part 4, using Dr. David Lien’s book “it’s easier than you think” with ‘thanks for the memories’, by Vince Otten

35	Snowflake screen saver: A BASIC one - liner, Xmas screen saver, by E.T. Fonehume
36	Programing languages for the Model 1: Vince looks at early PASCAL compilers, by Vince Otten
47	New from France: Pascals latest hardware recreations. Full details on his website at https://prof - 80.fr/, by Pascal Holdry
53	Mav’s Tandy Assembly news: Mav’s report of the 2025 T.A. and looks forward to 2026, by Ian Mavric
67	A roundup of some U.K. Ebay Bargains: Were you one of the lucky ones?, by Unattributed
69	The Way We Were: A short look back to the early 1980’s, by Unattributed
71	Amazed!: Just for fun! Have a go and see how quick your are., by Unattributed
72	Surfin’ the net: Shows off his new Model 1 board. Fantastic!, by ‘KiwiSinceBirth’
73	In Mav’s Workshop: You bought a model 2000 what now! Part 2: Mav looks at hardware add - ons. A very rare machine In the U.K. I can’t recall seeing one!, by Ian Mavric

TRS-80 News

February 24, 2026 - Original Model III LDOS Manual / Binder / Disk

February 21, 2026 - TRS-80 Trash Talk Live # 47 Starts Soon

February 21, 2026 - eBay Auctions

Books

Software

Other

February 18, 2026 - New Software from Irwin Burton

February 17, 2026 - New Software from Ian Mavric

February 9, 2026 - Two Dutch TRS-80 Manuals

February 6, 2026 - Popular Computing Newsletter

February 5, 2026 - Assorted Radio Shack Memos

February 2, 2026 - Some news updates

January 28, 2026 - Compilable Model I/III Level II ROM Source Code

January 18, 2026 - TRS80GP Updated to v2.5.6

New Features:

Bug Fixes:

January 16, 2026 - TRS-80 Trash Talk Live # 45 set for January 16, 2026

January 6, 2026 - New Software

January 3, 2026 - Key Commander

January 1, 2026 - Site Updates

December 27, 2025 - TRSDOS Disassembled

December 26, 2025 - NEWDOS/80 v2.0 Disassembled

December 21, 2025 - MxZVM updated to v18

December 18, 2025 - SDLTRS2 Updated to v1.2.34

December 9, 2025 - Update to TRS80Tool

December 9, 2025 - WHOOOOOPS!

December 1, 2025 - TRS8BIT - Vol 19, No. 4

Issue Information:

Issue Summary:

Table of Contents

December 2, 2025 - Clipping

November 29, 2025 - BACKUP/CMD and TAPEDISK/CMD for Model I TRSDOS v2.3 Disassembled

November 28, 2025 - Cool and Efficient Power Supply Modification for the Model I

November 25, 2025 - Randy Cook Easter Egg

November 23, 2025 - Site-Wide Search Function

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