How many registers are there in an 8085 microprocessor?

Answer 1

Accumulator or A register is an 8-bit register used for arithmetic, logic, I/O and load/store operations. Flag is an 8-bit register containing 5 1-bit flags: * Sign - set if the most significant bit of the result is set. * Zero - set if the result is zero. * Auxiliary carry - set if there was a carry out from bit 3 to bit 4 of the result. * Parity - set if the parity (the number of set bits in the result) is even. * Carry - set if there was a carry during addition, or borrow during subtraction/comparison. General registers: * 8-bit B and 8-bit C registers can be used as one 16-bit BC register pair. When used as a pair the C register contains low-order byte. Some instructions may use BC register as a data pointer. * 8-bit D and 8-bit E registers can be used as one 16-bit DE register pair. When used as a pair the E register contains low-order byte. Some instructions may use DE register as a data pointer. * 8-bit H and 8-bit L registers can be used as one 16-bit HL register pair. When used as a pair the L register contains low-order byte. HL register usually contains a data pointer used to reference memory addresses. Stack pointer is a 16 bit register. This register is always incremented/decremented by 2. Program counter is a 16-bit register.

Answer 2

There are fourteen 16 bit registers on the Intel 8086/8088 processor. AX, BX, CX, DX, SP, BP, SI, DI, CS, DS, SS, ES, IP, and FLAGS.

Answer 3

There are fourteen 16 bit registers on the Intel 8086/8088 processor. AX, BX, CX, DX, SP, BP, SI, DI, CS, DS, SS, ES, IP, and FLAGS.

Answer 4

There is one 16 bit flag register in the 8086/8088.

Answer 5

AH, AL, BH, BL, CH, CL, DH, DL = 8 eight bit registers

Answer 6

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Answer 7

8