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> Main > Error: add eax,[edx+esi+edi]? |
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chooka 14 Apr 2006, 05:32
Why fasm gives out a mistake on a design add eax, [edx+esi+edi]?
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14 Apr 2006, 05:32 |
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shoorick 14 Apr 2006, 07:00
lea ecx, [esi + edx]
add eax, [edi + ecx] even better  |
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14 Apr 2006, 07:00 |
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MazeGen 14 Apr 2006, 11:45
shoorick, why is your solution better than r22's?
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14 Apr 2006, 11:45 |
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shoorick 14 Apr 2006, 12:18
in true there is no difference in bytes (do not know about clocks), but usually i try to approach to shema:
addr = [indexing register]+[common register]+[offset] for example, in 16-bit mode this is possible: add ax,[di + cx] and this no: add ax,[dx + cx] so, it is just a rule |
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14 Apr 2006, 12:18 |
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MazeGen 14 Apr 2006, 16:51
Yeah, I got it.
Just one thing, [di+cx] addressing in not applicable in 16-bit mode, only [di+bx] or [di+bp]. |
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14 Apr 2006, 16:51 |
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RedGhost 14 Apr 2006, 19:58
MazeGen wrote: Yeah, I got it. he is correct  _________________ redghost.ca |
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14 Apr 2006, 19:58 |
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shoorick 15 Apr 2006, 05:07
you are right. i see, 16-bit ages are leaving me more and more |
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15 Apr 2006, 05:07 |
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