; Verifies that branching past end or before beginning ; of RAM wraps around .include "shell.inc" main: set_test 2,"Branch from $FF8x to $000x" setb <0,$E8 ; INX setb <1,$E8 ; INX setb <2,$60 ; RTS ldx #0 clc jsr forward cpx #1 jne test_failed set_test 3,"Branch from $000x to $FFFx" setb <0,$90 ; BCC setb <1,-$3F ldx #0 clc jsr <0 cpx #1 jne test_failed jmp tests_passed .segment "FF00" .res $C0 ; This code is at $FFC0: forward: .byte $90,$3F ; BCC $3F inx return: inx rts