For the CBM platforms, make revers() machine dependent and use the RVS flag

of the different machines instead of a separate one.
For the C128, make the textcolor() function work in 40 and 80 column mode.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1787 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm/Makefile

@@ -56,7 +56,6 @@ S_OBJS =	c_acptr.o	\
                 oserrlist.o     \
 		oserror.o	\
                 read.o          \
-		revers.o	\
                 rwcommon.o      \
                 scratch.o       \
                 sysremove.o     \

libsrc/cbm/revers.s

@@ -1,26 +0,0 @@
-;
-; Ullrich von Bassewitz, 07.08.1998
-;
-; unsigned char revers (unsigned char onoff);
-;
-
-      	.export		_revers
-	.export		revers
-
-_revers:
-	ldx    	#$00		; Assume revers off
-	tay			; Test onoff
-	beq	L1		; Jump if off
-	ldx	#$80		; Load on value
-L1:	ldy	#$00		; Assume old value is zero
-	lda    	revers 	       	; Load old value
-	stx	revers		; Set new value
-	beq	L2		; Jump if old value zero
-	iny			; Make old value = 1
-L2:	ldx	#$00		; Load high byte of result
-	tya			; Load low byte, set CC
-	rts
-
-.bss
-
-revers:	.res	1