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NESdev main page, search for "Nintendo Assembler".

Thanks Quietust, PPU address was wrong. Other problem was that NesASM use [ and ] for indirect indexed addressing and I was using ( and ).

lord: Just take a look at neshdr20.txt that comes with NesASM. All possible compinations are listed there (below mapper list).

I modified my code to use horizontal mirroring (.inesmir 0) and $2400 (instead of $2000) is written to $2006. Now it should be same as NES101. Still nothing on screen. When I look at nametables in FCE tile indexes are all $00 and $FF.

I'm following NES101 tutorial by Michael Martin. I come to part about background but can't get my name table to display. I'm not sure are they loaded correctly as whole screen is filled with tile #0. Code: .inesprg 1 .ineschr 1 .inesmir 1 .inesmap 0 .bank 0 .org $8000 reset: sei cld vb1: lda $2002 b...