"Wolfenstein 3D"-style demo on CoCo 3

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Uploaded by on Dec 6, 2009

This is a 3D raycasting demo I did for the Color Computer 3. The DSK can be downloaded here to be tried on a real CoCo 3 or an emulator:
http://www.coco3.com/community/wp-content/uploads/2009/12/REMDISK_Wolf_demo.zip
My homepage: http://sites.google.com/site/rveilleux/coco3home

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  • Some facts about the Tandy Color Computer 3:

    - The CoCo 3 has a 8-bit CPU, running at 1.79 MHz, with 128KB of RAM.

    - It can only perform 8-bit unsigned multiply. No division at all.

    - Absolutely no hardware acceleration for graphics

    - An Intel 286 is approximately 15 times more powerful than the CoCo's 6809 CPU

  • I wouldn't say a 268 is 15 time more powerful. Do you know how long the cycles are on opcodes for a 286 processor??? Much less efficient than the 6809.

  • Here's some fact you can compare:

    Motoroal 6809 vs Intel 286:

    nb of 16-bit register: 5 vs 12

    speed: 1.79MHz vs 12MHz

    address space: 64KB vs 16MB

    typical RAM: 128KB vs 1MB

    multiplication: 8-bit vs 16-bit

    division: none vs 16-bit

    The opcode timing I can see from online document shows the 286 being not bad at all. Less flexible addressing but incredibly more powerful instructions.

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  • Okay, this is amazing. A few years back (well, maybe ten now) we had SockMaster's GLOOM demo (later turned in to the Nick Marantes game Gate Crasher) which proved it could be done, and no one has done anything like it since -- now I find this. VERY nice!

  • Wow ! Great coding

  • Looks pretty darn awesome. Kudos for making it run zippy at full resolution too.

  • Herk... you should check for walls more often (use the DDA algorithm).

    It looks quite fucked up as it is.

  • I found a ray casting engine for mIRC, its really cool 3d

    /watch?v=hFJvdGzC9zk

  • That looks great! I can see a demonic happy face shooting lasers if you need a bad guy }:)

    Very nice!!!

  • Rem, that's amazing! Up & Down works too :)

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