Somewhere I have a copy of a BASIC program I typed into my TRS-80 Color Computer as a kid, from an issue of K-Power magazine.
I don't recall if it was one of the full issues, or one of the "insert issues" found within Family Computing of the era.
It was a special kind of "snow fall" generator; IIRC, there were only a couple of versions, one for the Apple IIe and the other for the PCjr - I likely used the PCjr version for the conversion since the BASIC language was nearly identical between the PCjr and my CoCo 2.
What was special was that it managed to seemingly move hundreds of pixels relatively rapidly on the screen; now, this might not seem like such a feat, but it really was considering we're talking about a computer system running an interpreted BASIC program, with a max speed below 1 MHz in standard mode (0.89 MHz - there was a so-called "speedup poke" that "doubled" the speed - POKE 65495,0 if anyone cares).
I don't recall what trick it used - or if it really used anything special at all - but I do remember being impressed by that bit of code.
I don't recall if it was one of the full issues, or one of the "insert issues" found within Family Computing of the era.
It was a special kind of "snow fall" generator; IIRC, there were only a couple of versions, one for the Apple IIe and the other for the PCjr - I likely used the PCjr version for the conversion since the BASIC language was nearly identical between the PCjr and my CoCo 2.
What was special was that it managed to seemingly move hundreds of pixels relatively rapidly on the screen; now, this might not seem like such a feat, but it really was considering we're talking about a computer system running an interpreted BASIC program, with a max speed below 1 MHz in standard mode (0.89 MHz - there was a so-called "speedup poke" that "doubled" the speed - POKE 65495,0 if anyone cares).
I don't recall what trick it used - or if it really used anything special at all - but I do remember being impressed by that bit of code.