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.text .set sfr, 0xffff8 mov a, sfr mov sfr, a mov sfr, #123 xch a, sfr .set sfrp, 0xffff8 movw ax, sfrp movw sfrp, ax movw sfrp, #0x1234 xch a, 0xffffa xch a, 0xffff9 xch a, 0xffffc xch a, 0xffffd xch a, 0xffffe xch a, 0xfffff