Machine code: Difference between revisions
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If you're going to do this in actual programming (which is somewhat common on 8-bit computers for quick interrupt handling), it may be a good idea to know ahead of time the maximum size of your RAM area for machine code and fill it with return statements to avoid crashing. |
If you're going to do this in actual programming (which is somewhat common on 8-bit computers for quick interrupt handling), it may be a good idea to know ahead of time the maximum size of your RAM area for machine code and fill it with return statements to avoid crashing. |
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=={{header|68000 Assembly}}== |
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We'll execute the following program: |
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<lang 68000devpac>MOVE.B #7,D0 |
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ADD.B #12,D0 |
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RTS</lang> |
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And here is the code that sets it up: |
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<lang 68000devpac>LEA CodeArray,A0 |
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MOVE.L #$103C0007,(A0)+ ;MOVE.B #7,D0 |
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MOVE.L #$D03C000C,(A0)+ ;ADD.B #12,D0 |
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MOVE.W #$4E75,(A0)+ ;RTS |
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JSR CodeArray |
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JMP $ ;halt the cpu, we're done. |
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CodeArray: |
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DS.B 16 ;16 bytes of padding (this is assumed to be RAM)</lang> |
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=={{header|Action!}}== |
=={{header|Action!}}== |
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