16 db $1B,"[1mFPGABoy Diagnostic ROM",$1B,"[0m",$0D,$0A,0
54 @ decrement hl the easy way
71 db "Testing memory from $C000 to $DF80...",0
75 db " Test failed at $",0
116 db "Diagnostic ROM complete; flip switches to nonzero and then to zero to reset.",$0D,$0A,0