stahta01 / display

3D Renderer (1983) for the TRS-80 Color Computer. Written in 6809 assembly language.

DISPLAY

3D Renderer for the TRS-80 Color Computer

• Original magazine article published in Hot CoCo (August 1983)
• Disk image (display.dsk)
• Original BASIC program (listing 1) and 6809 assembly listing (listing 2)

Disk Image and Source Code

The disk image contains three versions:

• DISPLAY.BAS / DISPLAY.BIN / DISPLAY.ASM

  • A gently modified version of the original code to make it work with Microsoft Disk BASIC
  • From BASIC, type RUN "DISPLAY"

• DISPLAY2.BAS / DISPLAY2.BIN / DISPLAY2.ASM

  • Allows you to rotate about multiple axes simultaneously
  • Moves common variables to the direct page and adds support for the 6309 processor
  • Runs much faster than the original
  • From BASIC, type RUN "DISPLAY2"

• DISPLAY3.BAS / DISPLAY3.BIN / DISPLAY3.ASM

  • Requires a Color Computer 3
  • Assembly converted to a modern standard
  • From BASIC, type RUN "DISPLAY3"

To Use

• Mount the disk image and RUN one of the three versions
• Type LOAD"DIAMOND" and press ENTER
• Try: X, Y, Z, SHIFT-X, SHIFT-Y, SHIFT-Z, ARROW KEYS, S (smaller) and B (bigger)
• On the CoCo 3 version, try the ENTER key
• To exit display mode, press the @ key
• Type HELP to learn more

To Modify

Windows development tools and a primitive build script are located at win/build.cmd

License

All modifications are licensed under the BSD 3 Clause license

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