Quote:
Originally Posted by LaBodilsen
|
I hope people aren't getting a bit fed up with all my failures!
I found the Abacus book "Amiga Intern" (as suggested by user ASM68 in another thread) and this page here
http://www.winnicki.net/amiga/memmap/LineMode.html really helpful to debug the blitter.
The thing which really threw me off with the Line Mode, was why all the values were multiplied by 2... but then it dawned on me that the bltxmod and bltxpt registers probabaly don't have the least significant bit connected, so the values are just left shifted to fit! Once I figured that out (took 9 days), the implementation was quite easy.
I was able to fix the shifting section and now we have what appears to be a fully working boot of KS1.2!