Category:Z80 Assembly: Difference between revisions
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Some programmers have taken this to its logical extreme by filling several kilobytes' worth of memory with <code>LDI</code> instructions, then pick how many they want to execute by offsetting a pointer to that section of memory. If you have plenty of bytes to burn and the need for speed, it can be a viable option. |
Some programmers have taken this to its logical extreme by filling several kilobytes' worth of memory with <code>LDI</code> instructions, then pick how many they want to execute by offsetting a pointer to that section of memory. If you have plenty of bytes to burn and the need for speed, it can be a viable option. |
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<syntaxhighlight lang="Z80"> |
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align 256 ;ensures that the first LDI begins at address &xx00 |
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rept &7FF |
rept &7FF |
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LDI ;LDI takes up two bytes each, so by storing &7FF of them we fill up &0FFE bytes, nearly 4k! |
LDI ;LDI takes up two bytes each, so by storing &7FF of them we fill up &0FFE bytes, nearly 4k! |
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endr |
endr |
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RET |
RET |
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</syntaxhighlight> |
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==References== |
==References== |
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