removed obsolete TAB key support

src/kernal/keyboard/kb_matrix.s

@@ -55,10 +55,6 @@ __kb_matrix_ctrl:
 	!byte $9C,$12,$04,$1E,$03,$06,$14,$18
 	!byte $1F,$19,$07,$9E,$02,$08,$15,$16
 	!byte $12,$09,$0A,$92,$0D,$0B,$0F,$0E
-!ifdef CONFIG_EDIT_TABULATORS {
-	!byte $00,$10,$0C,$00,KEY_C64_TAB_FW,$1B,$00,KEY_C64_TAB_BW
-} else  {
 	!byte $00,$10,$0C,$00,$00,$1B,$00,$00
-}
 	!byte $1C,$00,$1D,$00,$00,$1F,$1E,$00
 	!byte $90,$06,$00,$05,$00,$00,$11,$00

src/kernal/keyboard/kb_matrix_128.s

@@ -16,7 +16,7 @@
 
 kb_matrix_128:
 
-	!byte KEY_HELP,$38,$35,KEY_C64_TAB_FW,$32,$34,$37,$31
+	!byte KEY_HELP,$38,$35,$00,$32,$34,$37,$31 ; $00 replaces TAB key
 	!byte KEY_ESC,$2B,$2D,$8D,$0D,$36,$39,$33
 	!byte $00,$30,$2E,$91,$11,$9D,$1D,$00
 

src/kernal/keyboard/kb_matrix_65.s

@@ -15,11 +15,11 @@
 
 kb_matrix_65:
 
-	!byte $00, KEY_C64_TAB_FW, $00, KEY_HELP, KEY_F9,  KEY_F11, KEY_F13, KEY_ESC
+	!byte $00, $00, $00, KEY_HELP, KEY_F9,  KEY_F11, KEY_F13, KEY_ESC
 
 kb_matrix_65_shifted:
 
-	!byte $00, KEY_C64_TAB_BW, $00, KEY_HELP, KEY_F10, KEY_F12, KEY_F14, KEY_ESC
+	!byte $00, $00, $00, KEY_HELP, KEY_F10, KEY_F12, KEY_F14, KEY_ESC
 
 
 } } ; CONFIG_KEYBOARD_C65 and no CONFIG_LEGACY_SCNKEY

src/kernal/keyboard/scnkey.s

@@ -401,22 +401,6 @@ scnkey_handle_caps_lock:
 
 scnkey_got_petscii:
 
-!ifdef CONFIG_KEYBOARD_C128 { !ifdef CONFIG_EDIT_TABULATORS {
-
-	; Special handling for SHIFT+TAB; it is easier than creating new matrix
-
-	tax
-	cmp #KEY_C64_TAB_FW
-	bne @8
-	lda SHFLAG
-	and #KEY_FLAG_SHIFT
-	beq @8
-	ldx #KEY_C64_TAB_BW
-@8:
-	txa
-
-} } ; CONFIG_KEYBOARD_C128 and CONFIG_EDIT_TABULATORS
-
 	beq scnkey_no_keys                 ; branch if we have no PETSCII code for this key
 	ldy NDX
 	sta KEYD, y

src/kernal/screen/chrout_screen_jumptable_codes.s

@@ -29,10 +29,6 @@ __chrout_screen_jumptable_quote_guard:
 
 !ifdef CONFIG_EDIT_STOPQUOTE {
 	!byte KEY_STOP
-}
-!ifdef CONFIG_EDIT_TABULATORS {
-	!byte KEY_C64_TAB_BW
-	!byte KEY_C64_TAB_FW
 }
 	!byte KEY_DEL
 	!byte KEY_RETURN
@@ -60,10 +56,6 @@ chrout_screen_jumptable_lo:
 	!byte <(chrout_screen_INS-1)
 !ifdef CONFIG_EDIT_STOPQUOTE {
 	!byte <(chrout_screen_STOP-1)
-}
-!ifdef CONFIG_EDIT_TABULATORS {
-	!byte <(chrout_screen_TAB_BW-1)
-	!byte <(chrout_screen_TAB_FW-1)
 }
 	!byte <(chrout_screen_DEL-1)
 	!byte <(chrout_screen_RETURN-1)
@@ -85,10 +77,6 @@ chrout_screen_jumptable_hi:
 	!byte >(chrout_screen_INS-1)
 !ifdef CONFIG_EDIT_STOPQUOTE {
 	!byte >(chrout_screen_STOP-1)
-}
-!ifdef CONFIG_EDIT_TABULATORS {
-	!byte >(chrout_screen_TAB_BW-1)
-	!byte >(chrout_screen_TAB_FW-1)
 }
 	!byte >(chrout_screen_DEL-1)
 	!byte >(chrout_screen_RETURN-1)
@@ -114,10 +102,6 @@ chrout_screen_jumptable:
 	!word chrout_screen_INS
 !ifdef CONFIG_EDIT_STOPQUOTE {
 	!word chrout_screen_STOP
-}
-!ifdef CONFIG_EDIT_TABULATORS {
-	!word chrout_screen_TAB_BW
-	!word chrout_screen_TAB_FW
 }
 	!word chrout_screen_DEL
 	!word chrout_screen_RETURN

src/kernal/screen/chrout_screen_tab.s

@@ -1,42 +0,0 @@
-;; #LAYOUT# STD *        #TAKE
-;; #LAYOUT# X16 *        #IGNORE
-;; #LAYOUT# *   KERNAL_0 #TAKE
-;; #LAYOUT# *   *        #IGNORE
-
-;
-; Tabulation keys handling within CHROUT
-;
-
-
-!ifdef CONFIG_EDIT_TABULATORS {
-
-
-chrout_screen_TAB_FW:
-
-	jsr screen_get_clipped_PNTR
-	tya
-	ora #%00000111
-	tay
-	iny
-	cpy #40
-	bcc @1
-	ldy #39
-@1:
-	sty PNTR
-	
-	jmp chrout_screen_calc_lptr_done
-
-
-chrout_screen_TAB_BW:
-
-	jsr screen_get_clipped_PNTR
-	beq @2                             ; column 0,  recalculating pointers is not necessary, but this is a rare case nevertheless
-
-	dey
-	tya
-	and #%11111000
-	sta PNTR
-@2:
-	jmp chrout_screen_calc_lptr_done
-
-} ; CONFIG_EDIT_TABULATORS