Z8536_PDRB
Z8536_PDRB, 0xFE, /* Assign printer -RESET */
Z8536_PDRB, 0xFE, /* Clear printer -RESET */
portb = z8536_reg_get(sc->sc_bst, sc->sc_bsh, Z8536_PDRB);
z8536_reg_set(sc->sc_bst, sc->sc_bsh, Z8536_PDRB, portb & ~CPI_RESET);
portb = z8536_reg_get(sc->sc_bst, sc->sc_bsh, Z8536_PDRB);
z8536_reg_set(sc->sc_bst, sc->sc_bsh, Z8536_PDRB, portb | CPI_RESET);