Negative STEP does not work (*solved*)

[boriel]

Thanks! Downloading it... Btw: I think, it will be possible to change SpLib (Sprite Library from <!-- m --><a class="postlink" href="http://www.geocities.com/aralbrec/">http://www.geocities.com/aralbrec/</a><!-- m -->) from Z88dk to your compiler and write a wrapper, after removing Hires and hicolor code. The only problem I ecountered, is the transfer of parameters, even without optimisations switched on, it often do not work, even not with dummy variables. Example:

Code:

Sub PutGfx(x,y,adr)
  dummy=adr
  dummy=x
  dummy=y
  asm
    ld hl,(_adr)
    ld b,(_x)
    ld c,(_y)
   ....
   end asm
end sub

I was checking how you do transfer parameters to ASM in Librarys, and you are using the stack pointer. Clever! I will try the new version out later today.
Thanks!

Yes, that's it. I use IX as a stack pointer. A tip to guess the parameter address:

Code:

Sub PutGfx(x,y,adr)
  dummy=adr
  dummy=x
  dummy=y

Compile with -A flag only. This will give you unoptimized assebler code. Now edit the generated .asm file and you will see there the addresses of parameters adr, x and y. I think I need to write a tutorial. :!: