Colonies: population, farms, factories

[thunderchero]

I even had 8 bytes open lol

This doesn't sound right, shouldn't be more than 1-2 bytes (nops) left.

I had 8 bytes after moving code around before adding this.

xor ecx, ecx (looks like an unused register)
mov cl, 5
xor edx, edx
idiv ecx

after adding that I had 1 byte left.
But as I said that caused CTD on turn processing

[Spocks-cuddly-tribble]

Then, as told, you missed recalculating xrefs from or into moved code. My second workaround (*13/64 rounded down, instead of div 5) shouldn't require messing with this.

[thunderchero]

I checked xrefs from or into moved code with ida after I moved code and they were going to and from same locations as before. I compared original and edited side by side. If any xrefs are wrong it will not display as blocks in ida.

any way this works so it does not matter.

[Spocks-cuddly-tribble]

I think I see the problem. Asm integer divisions are even more intricate than my suggested code.

Instead of: xor edx, edx
we'd need:
mov edx, eax
sar edx, 1F
i.e. 3 more bytes (and even then there could occur further issues)

That's why most patches stick with workarounds and floating point calculations instead of using div (and most guys try to avoid asm coding whenever possible). Sorry for wasting your time with this.