Design change: Do keyboard polling internally without calling the kernal

in the system bank. For one this performs better (several %), second it
allows to handle the function keys in conformance with other platforms.
Without the custom keyboard routine, we would have to apply some more
magic to the function keys to make them work as with other cc65 targets.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2811 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm610/extzp.s

@@ -33,14 +33,23 @@ ktab4: 	       	.word  	$0000
 sysp0:          .word   $0000
 time:	      	.dword 	$0000
 segsave:        .byte   0
-scanbuf:        .byte   0
 ktmp:           .byte   0
 CURS_X:         .byte   0
 CURS_Y:         .byte   0
 RVS:            .byte   0
+config:         .byte   0
 CharPtr:        .word   0
-
-
+; Stuff for our own kbd polling routine
+keyidx:         .byte   0               ; Number of keys in keyboard buffer
+keybuf:         .res    10              ; Keyboard buffer
+keyscanbuf:     .byte   0
+keysave:        .byte   0
+modkey:         .byte   0
+norkey:         .byte   0
+graphmode:      .byte   0
+lastidx:        .byte   0
+rptdelay:       .byte   0
+rptcount:       .byte   0