[comp.sys.atari.st] Why does GDOS/ AMCGDOS slow down midi output?

geert@ahds.UUCP (Geert W.T. Jonkheer CCS/TS) (04/15/91)

I recently installed a program that uses GDOS or 
AMCGDOS. When I did this, some of my midi programs are slowing
down there output to my midi instruments. 
I think that only midi programs, that are using
atari's midi out TOS call (as i remember it Midiws() ), are
slowing down there output.  

Is this because there are some additional functions added by
GDOS/ AMCGDOS and the ST must search into a table to lookup
some routines, also the ones in the ROMS? 
If this is the clue, why can't GDOS bypass the default routines
,which are normally in ROM, immediately and uses the GDOS
functions afterward? It seems to me that GDOS first looks
if there is a GDOS function called and then passes to the
default ROM functions if a not GDOS call is called. 
 
Is there a GDOS version available, which hasn't this problem?
Any suggestions out there?

Thanks in advance. 

Geert.

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 Geert W.T. Jonkheer                 
 Albert Heyn B.V. Zaandam (NL).             UUCP:  ..!hp4nl!ahds!geert

 If you have any intresting things concerning midi..... please mail me. 
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