This source performs a pixel tunnel in chunky mode (320x200x256). It is a rather unoptimized, slow source, but I hope you will learn something out of it anyways. All circles and sinuses are precalculated and is being done internal by the source itself, so no external files are needed. All you need is turbo pascal with ASM options (5.3+?), since a couple of the procedures uses this facillity. It was coded at school on request, so I uploaded it on the net as well. More sources to follow, so stick around! If you have any question at all, considering this source or programming in all, on 680x0, 6502, Z80 or 80x86 do ask. I don't bite.. that hard! *bows* stians@interlink.no Stian S›reng Naustjorde 4 7560 Vikhamar Norway