Clobber R0: arg1, uart result R1: arg2 R2: R3: shift_amount ------------- Save R4: octal result, register result R5: word under construction R6: parse instructions R8: R9: end_char 1yyyxxxx Imm yyy = shift amount xxxx = bit-width 00000001 Brackets 0011yyyy Reg yyyy = shift amount 0100yyyy Reg MOVS 0x 00 00 88 38 ADDS 0x 00 00 88 38 SUBS 0x 00 00 88 38 CMP 0x 00 00 33 30 ANDS 0x 00 00 33 30 ORRS 0x 00 00 33 30 TST 0x 00 00 33 30 LSLS 0x 00 E5 33 30 LSRS 0x 00 E5 33 30 RORS 0x 00 00 33 30 LDR 0x E5 33 01 30 LDRB 0x 36 33 01 30 STR 0x E5 33 01 30 STRB 0x 36 33 01 30 B 0x 00 00 00 88 B 0x 00 00 00 8B BX 0x 00 00 00 43