Conditional structures: Difference between revisions
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The compare instruction is often used in combination with jumps, calls, and returns to implement high-level control structures. |
The compare instruction is often used in combination with jumps, calls, and returns to implement high-level control structures. |
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==If-Then-Else== |
===If-Then-Else=== |
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We'll look at this example in C and in Z80 Assembly: |
We'll look at this example in C and in Z80 Assembly: |
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If the accumulator didn't equal 20, no <code>CALL</code> will actually take place. |
If the accumulator didn't equal 20, no <code>CALL</code> will actually take place. |
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==Switch== |
===Switch=== |
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Switch cases can be implemented in a few ways. The simplest way is by checking each value individually. |
Switch cases can be implemented in a few ways. The simplest way is by checking each value individually. |
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<lang Z80>ld a,(HL) ;switch (HL) |
<lang Z80>ld a,(HL) ;switch (HL) |
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