This is a disassembly of TRSDOS v2.3’s SYS5/SYS file. SYS5/SYS handles DEBUG. After a DEBUG ON command has been issued and processed by SYS1/SYS, the DEBUG flag is set. Following that, DEBUG will start when one of 3 things happens: [1] A break is pressed, [2] a CMD file is loaded, and [3] a TRAP […]
Page Menu: How to Quickly Initialize a Model I/III Hard Drive Determining Hard Drive Geometry from CONFIG/SYS Using a Single Hard Drive with 2 Operating Systems Initializing Hard Drives under Model IV DOS’s Change The Minimum Cluster Size on R/S Hard Drives Booting a Model 4P from a Hard Drive Changing TRSDOS 6.2.1 to Boot […]
January 1, 2019 – PCB Mount for Level II ROM Upgrade Considering a Level 2 ROM upgrade but need a circuit board holder? Luis Fernando Salazar posted on a [https://www.facebook.com/groups/trs80games/permalink/314159935871069/ – Hotlink Deleted] TRS-80 Facebook group a link to [https://www.thingiverse.com/thing:3252566 – Hotlink Deleted] his 3D-printed plastic mounts to hold L2 ROMs on thingiverse.com. He has […]
Notes: It is not clear if I do, or do not, have permission to post these; so I am electing not to post. Many of the issues below (those without a cover) I have only a text file which has not been proofed, edited, or anything, so while I have been able to extract the […]
NOTE All magazines on this page are downloadable, thanks to Roy Soltoff and Tim Mann. Misosys Quarterly – Volume 1, Issue 1 Issue Information: Click to Enlarge Date: Summer 1986 Pages: 104 Download: Here Table of Contents: Page Title 02 The Blurb 06 Compuserve Special Interest Group 12 LDOS and LS-DOS Information 21 The Tower […]
This page will try to give a quick start to getting a TRS-80 emulator running. This page is broken into 4 section. The first is for those who are absoutely new to emulating a TRS-80 and have no idea how to begin. The second is for those who know how to use an emulator, but […]
January 1, 2006 – Site in Magazine PC World’s February 2005 issue features a story entitled The 50 Greatest Gadgets of the Past 50 Years. Gadget 25 is the Model 100. I took a series of pictures of a Model 100 I had for them, the site received credit! January 6, 2006 A recently won […]
January 7, 2004 Despite the dying scanner, a very small new 80 Micro has been scanned – Volume 01 (01/80). It is available on the 80 Micro page. January 9, 2004 I have a favor to ask. I am trying to find a LP called “Kidding Around with Carol Channing and the Kids.” (ISBN: 0898454727) […]
January 2, 2001 Jason Brady has sent 59 disks which I received and converted to DSK’s yesterday. I will be going theough them soon, so look for new software in the next few days. January 8, 2001 Added a Link to Jeff Vavasour’s On-Line Level I Emulator The TOSEC people will be releasing a TRS-80 […]
January 1, 2000 Site Updates: Happy New Year!! I wish you all the best in the coming year, and I thank you all for your support of the site over these past few years! Right now I am in Las Vegas – one of the few cities that can get away with charging $100 per […]