Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!tmsoft!masnet!canremote!david.megginson
From: david.megginson@canremote.uucp (DAVID MEGGINSON)
Newsgroups: comp.lang.c
Subject: Re: FUNCTION CALLS
Message-ID: <90031700353846@masnet.uucp>
Date: 17 Mar 90 01:45:00 GMT
Organization: Canada Remote Systems Limited, Mississauga, ON, Canada
Lines: 15

Turbo C on the Atari ST (M68000) passes the first three numeric 
arguments in D0, D1 and D2, and the first two address arguments in A0 
and A1. You can override this with the cdecl keyword. All floats and 
doubles get passed on the stack. You can buy a lot of speed this way, 
with a reasonably intelligent compiler. The moral: worry about logic and
readability, and let your compiler do the optimizing.

David Megginson, Centre for Medieval Studies
BITNET: meggin@vm.epas.utoronto.ca

PS. I know this is stupid, but in case anyone doesn't understand, D0-D7 
are the 32 bit data registers in a 68k chip, and A0-A7 are the address 
registers, also 32 bit. (A7 is the stack pointer).
---
 * Via ProDoor 3.1R