Instructions are listed by mnemonic in alphabetical order. The information provided about each instruction is: its assembler syntax, its attributes (i.e., whether it takes a byte, word, or longword operand), its description in words, the effect its execution has on the condition codes, and the addressing modes it may take.

68000 PROGRAMMER'S INSTANT REFERENCE CARD HACKENSACK, NJ 07602 HOW TO USE THIS MICRO CHART The INSTRUCTION SET section describes each instruction and gives its addressing modes, assembler syntax, size, execution time, and effect on the flags. The OPERANDS AND ADDRESSING section has general information on operand sizes, data …

The mode of the instruction indicates which operand is the source and which is the destination, as well as the operand size. Condition Codes: X — Set the same as the carry bit. N — Set if the result is negative; cleared otherwise. Z — Set if the result is zero; cleared otherwise. V — Set if an overflow is generated; cleared otherwise.

The Motorola 68000 (sometimes shortened to Motorola 68k or m68k and usually pronounced "sixty-eight-thousand") [2][3] is a 16/32-bit complex instruction set computer (CISC) microprocessor, introduced in 1979 by Motorola Semiconductor Products Sector.

2The 68000’s Instruction Set Two notations are employed for address register indirect addressing. The notation originally used to indicate address register indirect addressing has been superseded. However, the Teesside 68000 simulator supports only …

Motorola 68000 Instruction Set: There are actually 56 basic instructions provided in the Motorola 68000 Instruction Set. With 14 addressing modes, 56 instructions, and 5 data types, the 68000 includes more than 1000 opcodes.

View and Download Motorola 68000 instruction set online. 68000 computer hardware pdf manual download.

2021年7月10日 · The 68K instruction set is very orthogonal. Most instructions can operate on all data sizes, and very few are restricted to less than three addressing modes. 68K instructions are rather slow, but they do a lot more than instructions for the Z80 or x86 processors.

Although the 68000 bears some family resemblance to the 6800, its designers took full advantage of the benefits of large-scale integration and 16-bit architecture to provide many more internal registers.

In this section, we look at some basic instructions that are relatively simple to use. This section deals with binary manipulation (bit specific instructions). This section looks at instructions that work with positive and negative. We also look at other similar instructions too.