TXP_H2A_1
WRITE_REG(sc, TXP_H2A_1, sc->sc_boot_dma.dma_paddr & 0xffffffff);
WRITE_REG(sc, TXP_H2A_1, TXP_BOOTCMD_NULL);
WRITE_REG(sc, TXP_H2A_1, letoh32(fileheader->addr));
WRITE_REG(sc, TXP_H2A_1, letoh32(sect->nbytes));
sc->sc_txhir.r_reg = TXP_H2A_1;