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Appendix C: A Simple Machine Language

Appendix C: A Simple Machine Language. Op-code Operand Description 1 RXY LOAD reg. R from cell XY. 2 RXY LOAD reg. R with XY. 3 RXY STORE reg. R at XY. 4 0RS MOVE R to S. 5 RST ADD S and T into R. (2’s comp.) 6 RST ADD S and T into R. (floating pt.)

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Appendix C: A Simple Machine Language

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  1. Appendix C:A Simple Machine Language Op-codeOperand Description 1 RXY LOAD reg. R from cell XY. 2 RXY LOAD reg. R with XY. 3 RXY STORE reg. R at XY. 4 0RS MOVE R to S. 5 RST ADD S and T into R. (2’s comp.) 6 RST ADD S and T into R. (floating pt.) 7 RST OR S and T into R. 8 RST AND S and T into R. 9 RST XOR S and T into R. A R0X ROTATE reg. R X times. B RXY JUMP to XY if R = reg. 0. C 000 HALT.

  2. A Simple Machine Language Op-code Operand Description 1 RXY LOAD reg. R from cell XY. 2 RXY LOAD reg. R with XY. 3 RXY STORE reg. R at XY. 4 0RS MOVE R to S. 5 NXYSTORE 0N to cell XY 6 RST ADD S and T into R. 7 RST SUB S and T into R. 8 RST OR S and T into R. 90ST LOAD reg. S from cell pointed by T. A RST XOR S and T into R. B R0X ROTATE reg. R X times. C0XY JUMP to XY. D RXY JUMP to XY if R = reg. 0. E RXY JUMP to XY if R > 0. F 000 HALT.

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