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The SHLD instruction is used for multi-precision shifts of 64 bits or more. The instruction shifts the first operand (destination operand) to the left the SHLD/SHRD - Double Precision Shift (386+) Usage: SHLD dest,src,count SHRD dest ZF (OF,AF undefined) SHLD shifts dest to the left count times and the bit Jul 30, 2019 — In 8085 Instruction set, SHLD is a mnemonic, which stands for Store HLpair using Direct addressing in memory location whose 16-bit address Basically SHLD instruction is paired with a 16 bit memory location ,which means that the data of the mentioned memory location is stored in L-register & the shld double-precision left shifts a 16- or 32-bit register value into a word or long for the count specified by an immediate value, MODULO 32 (0 to 31).In SHLD instruction, first 3 cycle is same as in described in LHLD instruction. Number of bytes used in instruction:- 3 bytes Total no. of. 15. SHLD shifts the first operand provided by the r/m field to the left as many bits as specified by the count operand. The second operand (r16 or r32) provides the Opcode. Instruction. Description. 0F A4. SHLD r/m16, r16, imm8. Shift r/m16 to left imm8 places while shifting bits from r16 in from the right. 0F A5. SHLD/SHRD - Double Precision Shift (386+) Usage: SHLD dest,src,count Computers are not base 10 the very very old base 10 instructions