Added a systime implementation by Stefan Haubenthal with a few changes. The

routine reads the TOD clock of CIA1 on the C64 and C128. Since systime was a
dummy routine common for all CBMs before, this change adds an individual dummy
routine for all other CBM systems. CBM510/610 do also have a TOD clock, so a
similar function as in the C64 could be used ...


git-svn-id: svn://svn.cc65.org/cc65/trunk@3974 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm510/Makefile

@@ -72,6 +72,7 @@ OBJS =	_scrsize.o	\
 	pokesys.o	\
         randomize.o     \
 	revers.o	\
+        systime.o       \
         sysuname.o      \
 	tgi_mode_table.o
 

libsrc/cbm510/systime.s

@@ -0,0 +1,28 @@
+;
+; Ullrich von Bassewitz, 12.11.2002
+;
+; time_t _systime (void);
+; /* Similar to time(), but:
+;  *   - Is not ISO C
+;  *   - Does not take the additional pointer
+;  *   - Does not set errno when returning -1
+;  */
+;
+
+	.export		__systime
+
+        .importzp       sreg
+
+.code
+
+.proc   __systime
+
+        lda     #$FF
+        tax
+        sta     sreg
+        sta     sreg+1
+        rts                     ; Return -1
+
+.endproc
+
+