Complete redesign of the CBM610 support.

Use wrappers to call the kernal in bank 15 instead of implementing kernal
functionality within the cc65 libs (eats performance but is much smaller and
simpler).
Improved startup/shutdown code allows a return to the system bank without
calling the BASIC cold start vector.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm610/ksetnam.s

@@ -10,14 +10,35 @@
 
         .export         SETNAM
 
+        .import         sys_bank, restore_bank
+        .import         sysp0: zp, ktmp: zp
+
 	.include      	"cbm610.inc"
 
+
 .proc   SETNAM
 
-        sta     FNAM_LEN
-        stx     FNAM_ADR 
-        sty     FNAM_ADR+1
-        rts
+        pha
+        jsr     sys_bank
+        sty     ktmp
+
+        txa
+        ldy     #FNAM_ADR
+        sta     (sysp0),y
+
+        lda     ktmp
+        iny
+        sta     (sysp0),y
+
+	lda	ExecReg			; Assume name is always in this segment
+	ldy	#FNAM_SEG
+	sta	(sysp0),y
+
+        ldy     #FNAM_LEN
+        pla
+        sta     (sysp0),y
+        ldy     ktmp
+        jmp     restore_bank
 
 .endproc