Model T DocGarden

These pages are devoted to the Model T:

TRS-80 Model 100, Tandy Model 102, KC-85, NEC 8201A, NEC 8300, Olivetti M10, Tandy Model 200, and the WP-2

Classic Article Repubs

We hope to republish one or more articles from the Golden Era of the Model T every month:

• ROM Addresses: Getting BASIC to do What You Want
• Format Your Words With This TEXT Aid
• TextStar
• A Simple Self-Charger for the Model 100

One-Liners

This is a collection of Microsoft BASIC programs that

• Do something interesting or useful
• With only a single line of code

One-liners are bite-sized computer programs on a human scale. You are encouraged to type them in manually (by hand) and study their operation.

Model 100/102 Compatible One-Liners

Tandy Disk Drive and Emulators

TPDD emulators, in concert with a compatible disk clients like TS-DOS, TEENY, POWR-DOS, FLOPPY.CO, the Booster Pak, or the WP-2 built-in Diskette client are the most "advanced" way to accurately and quickly transfer all file types including binary files to and from your Model T laptop. There are different options for the server side on modern operating systems and devices:

Servers

The TPDD Services implement the "disk drive" end of the TPDD protocol.

• DLPilot
• DLPlus
• NADSBox
• Desklink
• Jan's DOS-Based Docking Station
• LaddieCon

Clients

TPDD Clients are software that runs on your Model T laptop. The communicate with a disk drive or other TPDD Service to save and load files.

• TS-DOS
• TEENY
• LAPDOS
• PDD
• WP2 Diskette Mode
• How to set up an old PC to run LAPDOS
• Using TS-DOS RAM's DOS Without the GUI

Real TPDD and TPDD-2

Differences between TPDD-1 and TPDD-2

Simple Text File Transfer (No Client)

You can use any "terminal program" to transfer text files to and from your Model T laptop. Here are some tutorials:

Text File Transfer using Hyperterminal

Text File Transfer to Mac using Z-Term

File Storage using MP3 Player

File storage with mp3 player

Model T Software

VirtualT Model 100/102, T200, NEC 8201A, M10 emulator

mtcpm CP/M for the Tandy 100/102/200

RAM4TH

Model T Hardware Hacks and Troubleshooting

• Splitting the Model 100/102/200 case
• Recovering an Unresponsive Laptop
• International Keyboard Support
• Repairing Problem Keys

Model T Hardware Projects

• T200 Disassembly
• NADSBox
• Mikrokolor
• MTHD
• Remem
• REX
• REXclassic
• REXCPM
• NSC800 Conversion
• BCR TTL SERIAL HACK
• PC-8201 BANK2 32kB SRAM card
• M100 26-3801 24kB SRAM card
• 5MHz Upgrade hacks
• T200 2x24kB SRAM card
• 8kB SRAM module
• REXsharp
• 5MHZ upgrade for Model T

Model T Developer Reference

Articles on Model T programming topics

• Gluing Strings in Place
• ROM Hooks
• Running BASIC Code from OptROM
• 8085 Reference
• Low Level Filesystem Access
• CO File Format
• BCR Port Access
• Relocating Loader (RLC) Format
• Error Codes
• Doing Binary In BASIC
• IO map
• Model 100 Serial Interface
• TPDD-2 Sector Access Protocol
• Model T System bus
• TPDD Base Protocol
• TPDD-2 Driver Reverse Engineering
• TPDD Design Notes
• Model 100/102 RAM Pointers
• 8085 RIM Instruction
• Model 100 Port B
• Model 100 RAM Variables
• Tandy 200 RAM
• Tandy 200 Timer
• Model 200 serial interface
• Model 100 System Map Part 0
• Disassembly of RAM and ROM versions of TS-DOS
• Model 100 System Map Part 1 (0000-0CD9)
• Model 100 System Map Part 2 (0DAB-290F)
• Model 100 System Map Part 3 (2943-3D7F)
• Model 100 System Map Part 4 (3FA0-5122)
• Model 100 System Map Part 5 (5146-6CE0)
• Model 100 System Map Part 6 (6D3F-7FD6)
• Model 100 System Map Part 7 (F5F4-FFEC)
• Model T Cross Map 0000-2000
• Model T Cross Map 6000-8000
• Model T Cross Map RAM Variables
• Model T Cross Map 2000-4000
• Model T Cross Map 4000-6000
• Model T Cross Map
• RAM File Handling
• Calling the Main ROM from Option ROM
• BASIC Efficiency Tips
• Model 100 ROM
• RBASIC
• RBASIC on Linux
• OPTROM Switching
• REX Overview
• Extraordinary String Animals
• Covington ROM Maps
• Description of Machine Code File Handling Routines
• Desklink/TS-DOS Directory Access
• Loading a typical CO file
• CRC-16-CCITT
• Model 100 LCD Programming
• BASIC Variable Format

Model T Links

Rick Hanson's Club 100

Steve Adolph's Remem Site

Chris Osburn's Calculating Instruments

Ken Pettit's Model T Projects