Doom timedemo 3 on a Macintosh Plus (Motorola 68000)

Would Doom be playable on a Macintosh Plus?
I've stripped down Doom8088 to just run timedemo 3 in 2 colors, and ported it to the Macintosh Plus with a Motorola 68000 cpu. It's the first time I've programmed something for a Macintosh. This video shows the result in the Mini vMac emulator.
It's compiled with Retro68: github.com/aut...
Download it here: github.com/Fre...
#MARCHintosh

[@Mikewee777]

The frame rate is awful but the fact that it runs at all is a miracle.

[@borgmardunkleson2225]

Proof that Doom will run on just about everything.

[@funkyfox2041]

Reminds me of my days trying to run Quake in software rendering on my 486...

[@neozeed8139]

This is way too awesome!!

[@t.c.b4722]

Instead of FPS we have SPF

[@DigiSpaceProductions]

Will there be a proper "playable" version made? I would kill for a "playable" version of doom for the Macintosh SE.

[@DookNookim]

We somehow need to improve this demo so it runs 5 times faster before it would playable. And I have no idea how to make it so much faster. 😞

[@DigiSpaceProductions]

@@DookNookim try running it with no wall textures at the lowest (playable on pc) pixel size and lower the screen size by like, 2 or 4 sizes.

[@greenknight9000]

Thinking about it, how hard would it be to optimize it for the Macintosh Plus? Or even the Macintosh Classic 1 for that matter; could it be possible to get it working at an acceptable frame rate?

[@DookNookim]

Maybe, using page flipping, some assembly and a lower resolution would make it faster.

[@spacecomplex7180]

Wouldn't shrinking the image/frame-size improve the framerate, if just a little even? Impressive stuff nonetheless

[@DookNookim]

It's already pretty low. The render window is 60 x 128 individual units. On screen it's horizontally 60 x 8 pixels = 480 pixels, and vertically 128 x 2 = 256 pixels.

[@Aaron_Gentry]

Reminds me of trying - emphasis on the trying part - to play Doom 2 on my buddy's old 1994 piece of shit computer, can't remember what it was or what the specs were. The performance of Doom 2 on that machine was only slightly faster than what you see in this video

[@ScarletSwordfish]

Impressive!

[@CirclesandSounds]

Thrilling! 😅

[@shadowchasernql]

Wait... you got DOOM8086 running on a 68000? Does that mean an Amiga port is a possibility now? 🤔

[@JasperTedVidalTale]

There's already an Amiga port of DOOM

[@shadowchasernql]

@@JasperTedVidalTale really? where?

[@JasperTedVidalTale]

@@shadowchasernql kzbin.info/www/bejne/l5fcdKFsopeEmMU

[@DookNookim]

I'm working on it. I've got something working in FS-UAE emulating an Amiga 500 with a 68020 processor. Somehow it doesn't work with a 68000 cpu. Maybe the compiler is doing something weird.

[@shadowchasernql]

@@DookNookim what's your compile target? because a lot of compilers don't like to emit 16-bit code by default

[@ChadDoebelin]

sweet! i'll try this out on real hardware and tag you!

[@autumn_rain]

fps reminds of c64 doom. also, resolution too high.

[@СергейМоскалёв-с3ь]

ZX-Spectrum does it better! :)