Mappy

[MrTAToad]

Give this a go - removed a bit more error checking

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[Ian Price]

Doesn't seem to be much of a difference really.

[Kuron]

MrTAToad:  What method are you using to control your framerate?

[MrTAToad]

There isn't - its just going as fast as possible.  LIMITFPS  is set to -1

Using VIEWPORT does hammer the program speed, especially with 4 sections

There is one more bit that can simplified - I'll try that later on...

[Wampus]

I'm getting the same result as others; the more tiles displayed the slower it goes. On an old Pentium 4 3.2GHz the processor is getting fairly well hammered.

There must be some reason for that. How much is the routine doing other than displaying the map sprites?

[edit: Nevermind. I saw you posted the code elsewhere. Thanks.]

[MrTAToad]

Aside from displaying the tiles, it just animates them.

Have a look at the source code and see if you can speed it up...