TRS-80 CoCo 3 6309 v 6809 3D Texture Demo

Code optimizer extraordinaire, L. Curtis Boyle has tweaked my favourite Tandy TRS-80 CoCo 3 3D texture demo to run faster on a 6309 CPU compared to the stock 6809 CPU.
I have two of my CoCo 3s here running the stock demo on a 6809 on the left and the optimized code running on a 6309 on my most upgraded CoCo 3 on the right. This CoCo also has 2MB of Boysontech RAM, a CoCoMECH upgraded keyboard from Ed Snider and custom 2048kB RAM badge from Carlos Camacho. Both CoCos are running CoCoSDCs.
The only thing making the CoCo on the right run this demo faster though is the 6309 code optimizations.
Very nice work Curtis!

Music is from the upcoming (as of October 2021) Pulse Eternal album, "Wildest Dreams," and the track is called, "Who Could Imagine."

[allenhuffman]

Impressive speed up. The 6309 was the must-have upgrade for OS-9 back then, but didn’t really get much RS-DOS love.

[Remantic]

Thank you for using my Coco tech demo for your 6309 compare test :)
I also did another raycasting coco 3 demo that you can control with the joystick, without textures so it runs much faster.

[KeritechElectronics]

Ah yes, the Trash Eighty... "But can it run Doom?"
That's some nice music there. I'll check PulseEternal out :).

[MrBriza]

I really need to run this on my unit just to see how much better it runs

[Neotenien]

Hello, I'm french

If you used the native mode on 6309, the speed rised up to 33% compared to the same 6809 (as same frequency) and the results here donest show a so high difference.

[AppliedCryogenics]

The hd63c09 was often run at 3.58MHz in arcade machines, despite the datasheet saying 3 MHz. Has anyone tried this in a coco 3?

[TD.SteveArcs]

Cool, did you see Dave's video on this computer?