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boriel
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location of heap manageme...
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| Multiplication result greater than 255 in UINTEGER var |
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Posted by: LukeBord1 - 2018-05-30, 09:42 AM - Forum: Help & Support
- Replies (2)
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First of all, as usual, sorry if this was discussed before... at a first sight around the arguments, i didn't find a solution.
The below code works till the "32*(PEEK 32044)" multiplicaton returns a a value within 255, but why?...
Code: REM 32043 and 32044 store line and column values
REM the routine should return the screen attr address
DIM a AS UINTEGER
a = 22528+PEEK 32043+(32*(PEEK 32044))
REM it doesn't work if the result of the multiplication exceeds 255!
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| Clarification about HEAP |
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Posted by: LukeBord1 - 2018-04-18, 09:49 PM - Forum: How-To & Tutorials
- Replies (6)
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I tried for months to make a compiled intro menu for my Arcade Game Designer projects without success... even storing the compiled menu program in a free memory area (below the AGD code), the game always crashed.
Finally I realized the importance of the HEAP setting in ZXB !
Reading various posts in this excellent forum, Boriel explained that the HEAP setting is a reserved memory area for string variables (please correct me if I'm wrong), and the memory allocation for this parameter is 4768 bytes by default !
So the light turned on and it seems I've finally discovered the cause of the memory collisions...
Since my Basic menu is very simple, including just a couple of UBYTEs without handling any string variable, I tried to set the HEAP to a minimum value like this:
Code: zxb menu.bas --org=25000 --heap=128
Now... I just wonder what could be the minimum HEAP setting when there's no string variables at all... and the reason why such an important parameter is just quoted in the ZXB command-line page without any further information !?
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| 1.8.1 error unexpected token 'ELSEIF' |
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Posted by: ximokom - 2018-02-07, 10:16 PM - Forum: Help & Support
- Replies (2)
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Estaba compilando correctamente con la version estable 1.7.2 y al actualizar a la version 1.8.1 en desarrollo me sale esto: Alguna idea?
Was compiling correctly with the stable version 1.7.2 and update to the version 1.8.1 in development I get this: any idea?
if n=0 then c="\a"
elseif n=1 then c="\{i6}\b" -->error unexpected token 'ELSEIF'
elseif n=2 then c="\{i2}\c"
end if
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