Posted By
Bionic
on 2006-09-14
05:02:06
|  Re: +4 biggest screen resolution
chicken: The IMG_6428... screenshot uses both real interlacing and the NTSC trick at once.
Csabo: There is also a way to use the CPU to generate bitmap data by forcing graphic fetch from a ROM bank that does not exist and disabling the line buffer. In that case the bitmap data is the last byte that remained on the bus, in fast clock mode every second processer cycle. If the CPU executes a chain of LDA #$Xx, it can be used to feed bitmap data to the TED.
Unfortunately you end up with some garbage because eventually you have to execute other instructions.
I have a program somewhere that uses this trick to display a bitmap in the border..
|
