rowley@ORVILLE.ARPA (Karl Rowley) (07/28/87)
Does anyone know how to determine what the rs-232 parameters are at any
point in time? They are simple enough to set with Rsconf(), but I do
not know of a way to just read the current settings.
Also, I have been trying to figure out what the format of resource files is.
Every resource file starts with a header. The header includes a bunch of
offsets and counts. I don't understand how these offsets are set. When
rsrc_load() loads a resource, does it simply read the objects from the file
and call rsrc_obfix() for each one? Any information or pointers to
information would be appreciated. Is this stuff documented in the Atari
developers kit?
Karl Rowley
rowley@orville.nas.nasa.gov
...{seismo,hplabs,lll-crg,ucbvax}!ames!orville!rowleysansom@trwrb.UUCP (Richard Sansom) (07/29/87)
In article <8707272346.AA14688@orville.arpa> rowley@ORVILLE.ARPA (Karl Rowley) writes: > >Does anyone know how to determine what the rs-232 parameters are at any >point in time? They are simple enough to set with Rsconf(), but I do >not know of a way to just read the current settings. > The Rsconf() call returns the old rs232 parameters in a packed long word as follows: 31 23 15 7 ---------------------------------------- | UCR | RSR | TSR | SCR | ---------------------------------------- bits value 31-24 UCR 23-16 RSR 15- 8 TSR 7- 0 SCR If you're using the Mark Williams C compiler, you'll need to redefine Rsconf() like this: #undef Rsconf #define Rsconf(a,b,c,d,e,f) (unsigned long)xbios(15,a,b,c,d,e,f) (this is necessary because xbios.h defines Rsconf() as a void!) The following C blurb will fetch the old values: #define UCRSHIFT 24 #define RSRSHIFT 16 #define TSRSHIFT 8 #define SCRSHIFT 0 unsigned long old_rsconf; int old_ucr, old_rsr, old_tsr, old_scr; /* BAUD and FLOW may also be -1 */ old_rsconf = Rsconf(BAUD, FLOW, -1, -1, -1, -1); old_ucr = (int)(old_rsconf >> UCRSHIFT) & 0xFF; old_rsr = (int)(old_rsconf >> RSRSHIFT) & 0xFF; old_tsr = (int)(old_rsconf >> TSRSHIFT) & 0xFF; old_scr = (int)(old_rsconf >> SCRSHIFT) & 0xFF; Hope this helps some. -Rich -- /////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ /// Richard E. Sansom TRW Electronics & Defense Sector \\\ \\\ {decvax,ucbvax,ihnp4}!trwrb!sansom Redondo Beach, CA /// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/////////////////////////////////////