From: "Ullrich von Bassewitz"; on Wed., Feb. 03, 2010; at 12:29 PM -0500 > > On Wed, Feb 03, 2010 at 05:56:22PM +0100, Oliver Schmidt wrote: > > > > Is there a way that a C64 user can leverage "a current unit"? > > The kernal has no such thing. You must specify a unit each time, a file is > loaded. On the C64, there is just a variable where the kernal remembers > the unit from the last LOAD. It is not used for anything else > (CBM hackers: please correct me if that is wrong). The "FA" (First Address) variable is used for all file "switching". It is changed by four Kernal functions: SETLFS, CHKIN, CHKOUT, and CLOSE (LOAD calls SETLFS). From: "Oliver Schmidt"; on Wed., Feb. 03, 2010; at 05:36 PM -0500 > > Things obviously are more complicated. :-( When a cc65 main() is > enterred, the zero-page location $BA doesn't contain the number of the > unit the program was loaded from (anymore). This is, BTW, the code I > added: > > _curunit = *(unsigned char *)0xBA; It's changed by the stdin, stdout, and stderr constructors. ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo@musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.Received on Thu Feb 4 03:13:37 2010
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