Archived Dragon Miscellany

Skip to site navigation

• Introduction
• Software
• Documentation

Introduction

Everything on this page is from a bygone era. It's unlikely to be of any use now, and writing style will be terrible.

Software

DragonDOS disk reading tools

PC/MS-DOS tools written in Turbo C for reading DragonDOS disks. Includes tools to translate disk files into CAS files. Unfortunately, there is little documentation available, they try to access the drive directly, and I seem to remember the drive being hard-coded. Like most equivalent software, won't work in this day and age unless you have a drive controller that can handle SD/DD disks (sadly rare). They also probably won't work under Windows.

• Binary: pcdbin.tar.gz (tar.gz 15K) or pcdbin.zip (zip 24K).
• Source: pcdsrc.tar.gz (tar.gz 3.4K) or pcdsrc.zip (zip 6.7K).

FBACK2

A Dragon 64 tool to use the maximum possible memory for copying disks. Works very much like Graham Kinns' FASTBACK, but is relocatable so you don't have to lose current work.

• fback2.tar.gz (tar.gz 2.6K) or fback2.zip (zip 2.9K).

Miscellaneous

• 64K.CAS, standard ROM->RAM copy code.
• ALPHA.CAS, the VDG character set (originally obtained, I think, from Graham Kinns).
• HIRES.CAS, a hi-res screen driver that locates both the screen and the program code in high-RAM.
• VORDY.CAS and VBIN.CAS, the BASIC and binary sections of a small text editor that runs under HIRES.

• progs.tar.gz (tar.gz 5.0K) or progs.zip (zip 5.6K).

Documentation

• Dragon video modes: a partial description of some of the results of SAM-VDG interactions better described in the hardware details page.
• Illegal 6809 Op-codes: an article written for Dragon Update, mostly about the "illegal" uses of the TFR and EXG instructions.

Updated 8 Jul 2010