Posted By
bubis
on 2002-11-26
|  why: $0400 -> $FF07
You seem to be putting values from around $0400 to $FF07. I think the values are
always the same, though. So what purpose does this serve?
I place the graphic screen to $8000 and I fill it with $48. It makes a (color1)(color0)(color2)(color0) sequence. Well, that is not a chessboard pattern. It is just vertical lines. I use XSCROOL to make a chessboard from it. I shift every second double-line with 2 pixels. That is why I'm writing $FF07. And I'm reading that table from $0400 and $0401 repeatedly. That is the white cells and the black cells on the chessboard.
Anyway, care to make an NTSC friendly version? Either check $FF07 first, and overwrite
that table before 'running' the FLI
Well, I don't know how is the timing on a NTSC machine but I try to make an NTSC version. I'll sent it to you for testing. But if you want I tell you what to do after a reset and how to restart the FLI routine.
|
