.include "macros.inc" start test_name SEXTH_1 mvi r1, 0 sexth r3, r1 check_r3 0 test_name SEXTH_2 load r1 0x7fff sexth r3, r1 check_r3 0x00007fff test_name SEXTH_3 load r1 0x8000 sexth r3, r1 check_r3 0xffff8000 end