Modul E4160 Unit 7 -8-bits, 16-bits And 32-bits Microprocessor Geneology

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7.0 8-BITS, 16-BITS AND 32-BITS MICROPROCESSOR GENEOLOGY

8086 16-BIT MICROPROCESSOR PROGRAMMING MODEL

68000(68K) 16-BIT MICROPROCESSOR PROGRAMMING MODEL

8086 16-BIT MICROPROCESSOR •The 8086 was the first 16-bit microprocessor introduced by Intel. •The 8086 use 9 (nine) Addressing Modes to perform on data, memory and I/O. devices.

The 8086 Main Register •4 (four) general-purpose register labeled AX, BX, DX and DX. •The Indexed Registers •The Instruction Pointer •The Status Register •

8086 ADDRESSING MODES 1.Immediate Mode 2.Register addressing 3.Direct addressing 4.Register indirect addressing 5.Based Addressing 6.Indexed Addressing 7.Based Indexed Addressing 8.String Addressing 9.I/O Addressing Modes

68000 16-BIT MICROPROCESSOR •The 68000 was the first developed and marketed by Motorola in late 1970s. •The 8086 use 9 (nine) Addressing Modes to perform on data, memory and I/O. devices.

The 8086 Main Register •4 (four) general-purpose register labeled AX, BX, DX and DX. •The Indexed Registers •The Instruction Pointer •The Status Register •

8086 ADDRESSING MODES 1.Immediate Mode 2.Register addressing 3.Direct addressing 4.Register indirect addressing 5.Based Addressing 6.Indexed Addressing 7.Based Indexed Addressing 8.String Addressing 9.I/O Addressing Modes

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