New Sonic the Hedgehog Amiga Fangame Project

[SamuraiCrow]

Speelgoedmannetje wrote:

Piru wrote:
@Speelgoedmannetje

Doom didn't run very nicely on a 66mhz+4mb system either...

I played Doom on such a setup (DX2 system), and it was very smooth. Resolution was 320 x 240 or so.

Probably because it had enough RAM.

To access Doom within the constraints of an operating system required more memory.  IIRC the Mac version of Doom and even Wolfenstien 3D ran slow and required 8 megs of RAM to run them.

The original Doom on '486 under MS-DOS banged the hardware mercilessly and had highly optimized assembly code sections to speed things up.  It was even playable on a '386 but was kind of slow.

[SamuraiCrow]

Speelgoedmannetje wrote:

Hattig wrote:
Megadrive: 8MHz 68000 and game-oriented graphics chip (tile based in particular, all pre-defined, means little-to-no CPU effort in drawing new graphics on the screen)
A500: 7.14MHz 68000 and planar-bitmap graphics

Not only is the CPU a little slower on the Amiga side, but to try to do all the Megadrive effects would be counter-productive on top of that.

However you can cut out some Megadrive features, and add in Amiga capabilities to compensate. Decent overscan, for example.

Oh come on! has this become an Amiga bash forum, or? Have you ever played Mr. Nutz, or Kid Chaos? Those are blatant Sonic clones, with the same speed and graphics. (though I think the Amiga has somewhat more independant bitplanes)

Using the routines defined in 8wayscroller or ScrollingTrick limits the number of blitter accesses required to do the scrolling.  The hard part was getting the BOBs on the Amiga to be as fast as the 20 hardware sprites the Genesis/Megadrive had.

[SamuraiCrow]

Amos needs a better compiler, that's for sure.