.target "z80"
.format "bin"

    LD  BC,0x0000
    LD  DE,0xffff
    LD  HL,0x00ff
    LD  SP,0x1111
    LD  IX,0x0fff
    LD  IY,0x1234
    DEC  BC
    INC  BC
    INC  DE
    DEC  DE
    INC  HL
    DEC  HL
    INC  SP
    DEC  SP
    INC  IX
    DEC  IX
    INC  IY
    DEC  IY