OpenEuphoria

Re: Assembly routines

• Posted by Mike Burrell <Mike.Burrell at GEOCITIES.COM> Apr 12, 1997
• 1006 views

> 1.  When using an assembly routine in Euphoria, is it interpreted like the
> rest of the program, or does Euphoria actually release control to the
> assembly function?

i believe it hands control over to the assembly code

> 2.  Euphoria uses protected mode (I think).  Is an assembly routine in a
> Euphoria program also run in protected mode, or is the computer switched to
> real mode before the assembly is run, and switched back to protected mode
> when the assembly returns?

nope it's in protected mode

> 3.  Is it possible to pass data back and forth between an assembly function
> and the Euphoria program?

the only way i could think of doing that is by doing something like
this:

-- start assembly code
; let's say some function value is stored in register ax
mov dx, 0500h ; just as an example
out dx,ax ; poke ax into #500
ret
-- end assembly code

var = peek(#500)

i think that'd work...  wewp

    .   o   O   Mike Burrell   O   o   .
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   .  o  O burrellm at geocities.com O  o  .