UTTORI ASM · IN DEVELOPMENT

65C02 variants

Use 65c02 variants in 6502-family and NES projects, with syntax and limits.

The 65SC02 adds (zp), BRA, STZ, TRB/TSB, accumulator INC/DEC (INA/DEA), PHX/PHY/PLX/PLY, and JMP (addr,x). Rockwell 65C02 adds RMB/SMB and BBR/BBS. WDC W65C02 adds WAI and STP.

arch 65sc02
bra next
lda ($12)
inc a
next:
  jmp ($1234,x)

arch 65c02
bbr0 $12,next
smb7 $34

arch w65c02
wai
stp