feat(arnitech): the Terminal Card is a Blade's screen and keyboard

With ARNITECH_BLADE the screen editor, the keyboard matrix scan, and the VIC-II
set-up are left out, and devices 3 and 0 are the Terminal Card the Arnitech
controller finds by its type, $04. CHROUT writes each byte to its Output, or
to its Literal while quote or insert mode is on, keeping QTSW and INSRT as the
screen editor does. CHRIN marks where input starts, echoes the keys typed, and
on RETURN has the Card take the logical line under the cursor and reads it
back. SCNKEY moves the Card's keys into the keyboard buffer up to XMAX, UDTIM
sets STKEY from its RUN/STOP, SCREEN answers 80x25, PLOT moves and reads its
cursor, and CINT resets it and puts the native-mode vectors in place. With no
Terminal Card, bytes printed go nowhere and no key comes.

src/aliases/,aliases_hardware_arnitech.s

@@ -36,6 +36,28 @@
 
 !ifdef CONFIG_ARNITECH_BLADE {
 
+	; The Terminal Card, a Blade's screen and keyboard (arnitech's ADR 0031): its type in the Slot
+	; table, and its registers indexed by its Card window's low byte, as ARNI_FINDCARD gives it in X
+
+	!set   TERMINAL_CARD_TYPE   = $04
+
+	!addr TERMINAL_OUTPUT      = $DE00  ; a PETSCII byte, printed as the screen editor prints it
+	!addr TERMINAL_LITERAL     = $DE01  ; a byte drawn as its glyph, for quote and insert mode
+	!addr TERMINAL_STATUS      = $DE02
+	!addr TERMINAL_KEY         = $DE03  ; the next key; a read takes it, $00 if none
+	!addr TERMINAL_COMMAND     = $DE04
+	!addr TERMINAL_LINE        = $DE05  ; the taken line's next byte, RETURN at its end
+	!addr TERMINAL_COLUMN      = $DE06
+	!addr TERMINAL_ROW         = $DE07
+
+	!set   TERMINAL_KEY_WAITING = %00000001  ; status bits
+	!set   TERMINAL_STOP_HELD   = %00000010
+	!set   TERMINAL_INSERTED    = %00001000  ; the last byte was an INS that opened a space
+
+	!set   TERMINAL_TAKE_LINE   = $01  ; commands
+	!set   TERMINAL_RESET       = $02
+	!set   TERMINAL_INPUT_START = $03
+
 	; The 65816's native-mode vectors, which a Blade reads from the RAM under the KERNAL (ADR 0029)
 
 	!addr NATIVE_VECTORS       = $FFE4  ; COP, BRK, ABORT, NMI, reserved, IRQ

src/kernal/arnitech/arnitech_terminal.s

@@ -0,0 +1,256 @@
+;; #LAYOUT# STD *        #TAKE
+;; #LAYOUT# *   *        #IGNORE
+
+;
+; The Terminal Card driver of the Blade Firmware (mc64blade only, arnitech's ADR 0030 and 0031)
+;
+; A Blade has no VIC-II and no keyboard: its screen and keyboard, devices 3 and 0, are the
+; Terminal Card, which holds the 80x25 screen and the screen editor itself. CHROUT writes each
+; byte to it, as a glyph while quote or insert mode is on; CHRIN echoes the keys typed and, on
+; RETURN, reads back the logical line under the cursor; the IRQ moves its keys into the keyboard
+; buffer and its RUN/STOP into STKEY. Quote and insert mode stay the KERNAL's, in QTSW and INSRT,
+; as the Card cannot see them. With no Terminal Card, bytes printed go nowhere and no key comes.
+;
+
+!ifdef CONFIG_ARNITECH_BLADE {
+
+;
+; Finds the Terminal Card. Out: carry clear and X = its Card window's low byte, carry set if
+; there is none. A is not kept, Y is.
+;
+
+terminal_find:
+
+	lda #TERMINAL_CARD_TYPE
+	jmp arnitech_find_card
+
+;
+; CHROUT for device 3. SCHAR holds the byte; CHROUT has saved X, Y, and P.
+;
+; Outside quote and insert mode the byte goes to Output. While either is on, every control code
+; but RETURN, SHIFT+RETURN, and STOP goes to Literal, which draws it as a glyph; so does DEL
+; while INSRT is not 0, which a DEL between quotes leaves to delete. RETURN, SHIFT+RETURN, and
+; STOP end both modes. A glyph drawn counts INSRT down, a quote toggles QTSW, and an INS that
+; opened a space (status bit 3) counts INSRT up.
+;
+
+chrout_terminal:
+
+	jsr terminal_find
+	bcs chrout_terminal_done           ; no Terminal Card: the byte goes nowhere
+
+	lda SCHAR
+	and #$60
+	beq chrout_terminal_control        ; $00-$1F and $80-$9F are control codes
+
+	lda SCHAR
+	sta TERMINAL_OUTPUT, x
+
+	; FALLTROUGH
+
+chrout_terminal_glyph:
+
+	lda INSRT
+	beq @1
+	dec INSRT
+@1:
+	lda SCHAR
+	cmp #$22
+	bne chrout_terminal_done
+	lda QTSW
+	eor #$80
+	sta QTSW
+
+	; FALLTROUGH
+
+chrout_terminal_done:
+
+	jmp chrout_done_success
+
+chrout_terminal_control:
+
+	lda SCHAR
+	cmp #KEY_RETURN
+	beq chrout_terminal_end_modes
+	cmp #KEY_SHIFT_RETURN
+	beq chrout_terminal_end_modes
+	cmp #KEY_STOP
+	beq chrout_terminal_end_modes
+
+	ldy INSRT
+	bne chrout_terminal_literal        ; in the spaces INS opened, DEL too is a glyph
+	ldy QTSW
+	beq chrout_terminal_code
+	cmp #KEY_DEL
+	beq chrout_terminal_code           ; between quotes DEL still deletes
+
+	; FALLTROUGH
+
+chrout_terminal_literal:
+
+	sta TERMINAL_LITERAL, x
+	jmp chrout_terminal_glyph
+
+chrout_terminal_code:
+
+	sta TERMINAL_OUTPUT, x
+	cmp #KEY_INS
+	bne chrout_terminal_done
+	lda TERMINAL_STATUS, x
+	and #TERMINAL_INSERTED
+	beq chrout_terminal_done
+	inc INSRT
+	bne chrout_terminal_done           ; branch always
+
+chrout_terminal_end_modes:
+
+	sta TERMINAL_OUTPUT, x
+	lda #$00
+	sta QTSW
+	sta INSRT
+	beq chrout_terminal_done           ; branch always
+
+;
+; CHRIN for device 0, the keyboard. X and Y are kept.
+;
+; The first call marks where input starts on the Terminal, echoes each key typed through CHROUT,
+; and on RETURN has the Card take the logical line under the cursor; it and the calls after
+; return the line's bytes, then RETURN, which ends it.
+;
+
+chrin_terminal:
+
+	stx XSAV
+	+phy_trash_a
+
+	lda CRSW
+	bne chrin_terminal_next            ; a line is being returned
+
+	jsr terminal_find
+	bcs chrin_terminal_wait
+	lda #TERMINAL_INPUT_START
+	sta TERMINAL_COMMAND, x
+
+chrin_terminal_wait:
+
+	lda NDX
+	beq chrin_terminal_wait
+	jsr get_from_keyboard_buffer
+	cmp #KEY_RETURN
+	beq chrin_terminal_take
+	jsr JCHROUT                        ; the Terminal Card edits
+	jmp chrin_terminal_wait
+
+chrin_terminal_take:
+
+	jsr terminal_find
+	bcs chrin_terminal_end             ; the Card is gone: an empty line
+	lda #TERMINAL_TAKE_LINE
+	sta TERMINAL_COMMAND, x
+	inc CRSW
+
+chrin_terminal_next:
+
+	jsr terminal_find
+	bcs chrin_terminal_end
+	lda TERMINAL_LINE, x
+	cmp #KEY_RETURN
+	bne chrin_terminal_return
+
+	; FALLTROUGH
+
+chrin_terminal_end:
+
+	lda #$00
+	sta CRSW
+	sta QTSW
+	sta INSRT
+	lda #KEY_RETURN
+
+	; FALLTROUGH
+
+chrin_terminal_return:
+
+	tax
+	+ply_trash_a
+	txa
+	ldx XSAV
+	clc
+	rts
+
+;
+; SCNKEY: moves the Terminal Card's keys into the keyboard buffer, while it has room; the rest
+; wait in the Card.
+;
+
+SCNKEY:
+
+	jsr terminal_find
+	bcs @2
+@1:
+	lda TERMINAL_STATUS, x
+	lsr                                ; bit 0, a key waiting, into carry
+	bcc @2
+	ldy NDX
+	cpy XMAX
+	bcs @2
+	lda TERMINAL_KEY, x
+	sta KEYD, y
+	inc NDX
+	bne @1                             ; branch always
+@2:
+	rts
+
+;
+; The part of UDTIM that reads the STOP key: STKEY is $7F while the Terminal Card's RUN/STOP is
+; held, $FF otherwise. Y is kept.
+;
+
+udtim_terminal_stop:
+
+	jsr terminal_find
+	lda #$00                           ; no Terminal Card, no RUN/STOP
+	bcs @1
+	lda TERMINAL_STATUS, x
+@1:
+	and #TERMINAL_STOP_HELD
+	lsr
+	lsr                                ; held into carry
+	ror                                ; ... and into bit 7
+	eor #$FF
+	sta STKEY
+	rts
+
+;
+; SCREEN: the Terminal's 80 columns in X and 25 rows in Y.
+;
+
+SCREEN:
+
+	ldx #80
+	ldy #25
+	rts
+
+;
+; CINT's work on a Blade: the keyboard and the screen as the input and output devices (as
+; vicii_init does on a C64), the keyboard buffer's size, a reset of the Terminal and of quote and
+; insert mode, the native-mode vectors, and CIA1's timer A for the jiffy IRQ.
+;
+
+cint_terminal:
+
+	jsr clrchn_reset
+	ldx #10
+	stx XMAX
+	lda #$00
+	sta CRSW
+	sta QTSW
+	sta INSRT
+	jsr terminal_find
+	bcs @1
+	lda #TERMINAL_RESET
+	sta TERMINAL_COMMAND, x
+@1:
+	jsr native_vectors_init
+	jmp setup_pal_ntsc
+}

src/kernal/init/cint_screen_keyboard.s

@@ -2,6 +2,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; This is a part CINT which initializes screen and keyboard
 ;
@@ -49,3 +52,5 @@ cint_screen_keyboard:
 	; Fallthrough/jump to screen clear routine (Computes Mapping the 64 p215)
 
 	jmp clear_screen
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/init/e518.cint_legacy.s

@@ -2,6 +2,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Part of the official Kernal routine, described in:
 ;
@@ -37,3 +40,5 @@ cint_legacy_end:
 	; Game 'Operacja Proboszcz' is one example.
 
 	jmp cint_screen_keyboard ; XXX try to fit the code here
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/init/e5a0.vicii_init.s

@@ -5,6 +5,9 @@
 ;; #LAYOUT# X16 *        #IGNORE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no VIC-II
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Well-known Kernal routine, described in:
 ;
@@ -28,3 +31,5 @@ vicii_init:
 	jmp vicii_init_registers
 
 } ; ROM layout
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/init/ff5b.cint.s

@@ -13,5 +13,9 @@
 
 CINT:
 
+!ifndef CONFIG_ARNITECH_BLADE {
 	jsr cint_legacy
 	jmp setup_pal_ntsc
+} else {
+	jmp cint_terminal
+}

src/kernal/init/vicii_init_registers.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# M65 KERNAL_1 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no VIC-II
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; The VIC-II set-up of vicii_init (e5a0.vicii_init.s), moved out of $E5A0-$E5C8
 ; so that $E5B4 is free
@@ -50,3 +53,4 @@ vicii_init_registers:
 	jmp CLRCHN
 }
 
+} ; CONFIG_ARNITECH_BLADE

src/kernal/interrupts/ea31.default_irq_handler.s

@@ -47,7 +47,9 @@ default_irq_handler_common:
 
 } else {
 
+!ifndef CONFIG_ARNITECH_BLADE {
 	jsr cursor_blink
+}
 	jsr JSCNKEY
 	jsr JUDTIM ; update jiffy clock
 }

src/kernal/iostack/e50a.plot.s

@@ -26,12 +26,39 @@ plot_set:
 	sty PNTR
 	stx TBLX
 
+!ifndef CONFIG_ARNITECH_BLADE {
+
 	jsr screen_calculate_pointers
 
+} else {
+
+	; On a Blade the cursor is the Terminal Card's, which clamps it to the 80x25 screen;
+	; PNTR and TBLX keep the last place set or read, which is all there is without a Card
+
+	jsr terminal_find
+	bcs plot_get_kept
+	lda PNTR
+	sta TERMINAL_COLUMN, x
+	lda TBLX
+	sta TERMINAL_ROW, x
+}
+
 	; FALLTROUGH to save one byte on RTS
 
 plot_get:
 
+!ifdef CONFIG_ARNITECH_BLADE {
+
+	jsr terminal_find
+	bcs plot_get_kept
+	lda TERMINAL_COLUMN, x
+	sta PNTR
+	lda TERMINAL_ROW, x
+	sta TBLX
+
+plot_get_kept:
+}
+
 	ldy PNTR
 	ldx TBLX
 	rts

src/kernal/iostack/f157.chrin.s

@@ -22,7 +22,11 @@ CHRIN:
 	lda DFLTN
 
 	; Try $00 - keyboard
+!ifndef CONFIG_ARNITECH_BLADE {
 	+beq chrin_keyboard
+} else {
+	+beq chrin_terminal
+}
 
 	; XXX Try $03 - screen
 	; cmp #$03

src/kernal/iostack/f1ca.chrout.s

@@ -30,7 +30,11 @@ CHROUT:
 	lda DFLTO
 
 	cmp #$03 ; screen
+!ifndef CONFIG_ARNITECH_BLADE {
 	+beq chrout_screen
+} else {
+	+beq chrout_terminal
+}
 
 !ifdef HAS_RS232 {
 	cmp #$02 

src/kernal/keyboard/eb48.scnkey_set_keytab.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Well-known Kernal routine, described in:
 ;
@@ -97,3 +100,5 @@ scnkey_toggle_if_needed: ; entry for SCNKEY (TWW/CTR version)
 @1:
 	rts
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix.s

@@ -4,6 +4,9 @@
 ;; #LAYOUT# M65 KERNAL_C #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Keyboard matrix, based on
 ;
@@ -93,3 +96,5 @@ __kb_matrix_ctrl:
 	!byte $90,$06,$00,$05,$00,$00,$11,$00
 	!byte $00,$00,$00,$84,$00,$00,$00,$1B
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_128.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Extended keyboard matrix for Commodore 128 keyboards, based on
 ;
@@ -29,3 +32,5 @@ kb_matrix_128_bucky_filter:
 	!byte %00000000 
 	!byte %10000001 ; ALT, NO_SCRL
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_alwaysrepeat.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Matrix ids of keys which should be repeated regardless of RPTFLG
 ;
@@ -25,3 +28,5 @@ __kb_matrix_alwaysrepeat_end:
 
 
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_bucky.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Matrix for retrieving bucky key status on the C64 keyboard
 ;
@@ -63,3 +66,5 @@ kb_matrix_bucky_shflag: ; mask to be ORed to SHFLAG to mark key status
 	!byte KEY_FLAG_ALT
 	!byte KEY_FLAG_NO_SCRL
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_bucky_filter.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Matrix for filtering out bucky keys while scanning the C64 keyboard
 ;
@@ -23,3 +26,5 @@ kb_matrix_bucky_filter:
 	!byte %00000000
 	!byte %00010000 ; SHIFT (right)
 	!byte %00100100 ; VENDOR + CONTROL
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_joy.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Matrix for retrieving C64 joystick status and inject is as keyboard event
 ;
@@ -40,3 +43,5 @@ kb_matrix_joy_keytab_hi:
 	!byte >__kb_matrix_normal      ; right
 
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_lookup.s

@@ -4,6 +4,9 @@
 ;; #LAYOUT# M65 KERNAL_C #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper table for determining keyboard matrix decoding table on the C64 keyboard
 ;
@@ -49,3 +52,5 @@ kb_matrix_lookup:
 	!word $0000                             ; %1.110 VENDOR+CTRL
 	!word $0000                             ; %1.111 SHIFT+VENDOR+CTRL
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_row_keys.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Single row key codes for scanning the C64 keyboard
 ;
@@ -25,3 +28,5 @@ kb_matrix_row_keys:
 	!byte %11011111
 	!byte %10111111
 	!byte %01111111
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/kb_matrix_row_offsets.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper values to quickly determine row offset from the start of keyboard matrix
 ;
@@ -20,3 +23,5 @@ kb_matrix_row_offsets:
 	!byte 5*8
 	!byte 6*8
 	!byte 7*8
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/keyboard_disconnect.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper routine - disconnects the keyboard from CIA1_PRB,
 ; leaves $FF in .X (behavior needed in some places)
@@ -18,3 +21,5 @@ keyboard_disconnect:
 }
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/scnkey.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Official Kernal routine, described in:
 ;
@@ -431,3 +434,5 @@ scnkey_buffer_full:
 	sta KOUNT
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/scnkey_128.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Keyboard scanning routine extension for C128 keyboards
 ;
@@ -67,3 +70,5 @@ scnkey_128_no_keys:
 
 	jmp scnkey_no_keys             ; pass controll to original routine
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/keyboard/scnkey_via_keylog.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, which has no keyboard matrix: its keys come from the Terminal Card (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ; Short helper jump-via-vector routine, to set the keyboard matrix
 
 !ifndef HAS_OPCODES_65CE02 {
@@ -11,3 +14,5 @@ scnkey_via_keylog:
 
 	jmp (KEYLOG)
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrin_keyboard.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Keyboard part of the CHRIN routine
 ;
@@ -167,3 +170,5 @@ chrkn_keyboard_not_enter:
 	jsr CHROUT
 	jsr pop_keyboard_buffer
 	+bra chrin_keyboard_read
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrin_programmable_keys.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Keyboard part of the CHRIN routine - programmable keys support
 ; Output: if Carry clear, programmable key was handled
@@ -50,3 +53,5 @@ chrin_programmable_keys:
 	rts
 
 } ; CONFIG_PROGRAMMABLE_KEYS
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - screen support (character output)
 ;
@@ -99,3 +102,5 @@ chrout_screen_done:
 
 	jsr cursor_show_if_enabled
 	jmp chrout_done_success
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_clr.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CLR key handling within CHROUT
 ;
@@ -12,3 +15,5 @@ chrout_screen_CLR:
 
 	jsr clear_screen
 	jmp chrout_screen_calc_lptr_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_control.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - screen support, control codes
 ;
@@ -70,3 +73,5 @@ chrout_try_color_loop:
 
 	; Unknown code, or key not requiring any handling
 	jmp chrout_screen_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_crsr.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Cursor keys handling within CHROUT
 ;
@@ -61,3 +64,5 @@ chrout_screen_CRSR_LEFT:
 	lda #39
 	sta PNTR
 	bne chrout_screen_CRSR_done        ; branch always
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_del.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - screen support, DEL key handling
 ;
@@ -120,3 +123,5 @@ chrout_screen_del_column_0:
 
 	; Finish with recalculating all the variables
 	bne chrout_screen_del_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_gfxtxt.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; GFX/TXT mode switch handling within CHROUT
 ;
@@ -25,3 +28,5 @@ chrout_screen_TXT:
 	lda VIC_YMCSB
 	ora #$02                           ; to lower case
 	bne chrout_screen_GFX_TXT_end      ; branch always
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_home.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; HOME key handling within CHROUT
 ;
@@ -12,3 +15,5 @@ chrout_screen_HOME:
 
 	jsr cursor_home
 	jmp chrout_screen_calc_lptr_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_ins.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - screen support, INS key handling
 ;
@@ -95,3 +98,5 @@ chrout_screen_ins_copy_loop:
 
 	; Return from loop
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_jumptable_codes.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Jumptable for screen control codes support. To improve performance, should be sorted
 ; starting from the least probable routine.
@@ -111,3 +114,5 @@ chrout_screen_jumptable:
 	!word chrout_screen_RETURN
 	!word chrout_screen_RETURN
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_quote.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - screen support, control codes in quote mode
 ;
@@ -22,3 +25,5 @@ chrout_screen_quote:
 	adc #$BF    ; C=1, so adding $BF + C = add $C0
 @1:	
 	jmp chrout_screen_literal
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_return.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; RETURN key handling within CHROUT
 ;
@@ -31,3 +34,5 @@ chrout_screen_RETURN:
 	jsr screen_calculate_PNT_USER
 @1:
 	jmp screen_advance_to_next_line
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_rvs.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; RVS ON/OFF handling within CHROUT
 ;
@@ -21,3 +24,5 @@ chrout_screen_RVS_OFF:
 
 	sta RVS
 	jmp chrout_screen_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_shift_onoff.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; SHIFT ON/OFF handling within CHROUT
 ;
@@ -21,3 +24,5 @@ chrout_screen_SHIFT_OFF:
 
 	sta MODE
 	jmp chrout_screen_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_screen_stop.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; STOP key handling within CHROUT
 ;
@@ -18,3 +21,5 @@ chrout_screen_STOP:
 	sta INSRT
 	jmp chrout_screen_done
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/chrout_to_screen_code.s

@@ -2,6 +2,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; CHROUT routine - convert PETSCII to screen code
 ;
@@ -50,3 +53,5 @@ chrout_to_screen_code:
 @done:
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/cursor.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Variables used:
 ; - BLNSW (cursor blink switch)
@@ -101,3 +104,5 @@ cursor_timer_reset:
 cursor_blink_end:
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/cursor_enable.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Variables used:
 ; - BLNSW (cursor blink switch)
@@ -15,3 +18,5 @@ cursor_enable:
 	sta BLNSW
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/cursor_show.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Variables used:
 ; - BLNSW (cursor blink switch)
@@ -35,3 +38,5 @@ cursor_show:
 cursor_show_done:
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e536.init_screen.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Init screen at reset
 ;
@@ -19,3 +22,5 @@ init_screen:
 
     sta $0286
     jmp clear_screen
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e544.clear_screen.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Clear screen and initialise line link table, described in:
 ;
@@ -39,3 +42,5 @@ clear_screen:
 
 	; Fall to cursor home routine
 	jmp cursor_home
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e566.cursor_home.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Home the cursor, described in:
 ;
@@ -17,3 +20,5 @@ cursor_home:
 	sta TBLX                           ; current row
 
 	; FALLTROUGH to the next routine
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e56c.screen_calculate_pointers.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Set pointer (PNT) to current screen line , described in:
 ;
@@ -23,3 +26,5 @@ screen_calculate_pointers:
 
 	jsr screen_calculate_PNT_USER
 	jmp screen_calculate_PNTR_LNMX
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e8ea.screen_scroll_up.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Scroll the whole screen up by 1 logical line, described in:
 ;
@@ -130,3 +133,5 @@ screen_scroll_up_loop_done:
  	; Recalculate PNT and USER
 
 	jmp screen_calculate_PNT_USER
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/e9ff.screen_clear_line.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Well-known routine, described in:
 ;
@@ -36,3 +39,5 @@ screen_clear_line:
 
 	; Done
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/ea24.screen_calculate_user.s

@@ -1,6 +1,9 @@
 ;; #LAYOUT# STD *        #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Well-known Kernal routine, described in:
 ;
@@ -22,3 +25,5 @@ screen_calculate_USER:
 	sta USER+1
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/ecf0.screen_line_lo_bytes.s

@@ -1,6 +1,9 @@
 ;; #LAYOUT# STD *        #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Well-known Kernal table, described in:
 ;
@@ -15,3 +18,5 @@ screen_line_lo_bytes:
 	!for line, 0, 24 {
 		!byte <(line * 40)
 	}
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Official Kernal routine, described in:
 ;
@@ -51,3 +54,5 @@ SCREEN:
 	pla
 	rts
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_advance_to_next_line.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_advance_to_next_line:
 
@@ -21,3 +24,5 @@ screen_advance_to_next_line:
 	sta PNTR
 
 	jmp chrout_screen_calc_lptr_done
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_calculate_pnt_user.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Set pointers PNT and USER to current screen line
 ;
@@ -60,3 +63,5 @@ screen_calculate_USER:
 
 	rts
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_calculate_pntr_lnmx.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Sets PNTR in a proper range (0-39 or 40-79)
 ; Sets LNMX to 39 or 79
@@ -62,3 +65,5 @@ screen_calculate_lnmx_79:
 	lda #79
 	sta LNMX
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_check_space_ends_line.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_check_space_ends_line:
 
@@ -12,3 +15,5 @@ screen_check_space_ends_line:
 	cmp #$20
 
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_check_toggle_quote.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper routine - check character in .A, toggles quote flag if needed
 ;
@@ -19,3 +22,5 @@ screen_check_toggle_quote:
 	lda #$22                           ; restore previous .A valuee
 @1:
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_code_to_petscii.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Screen code to PETSCII conversion - see:
 ;
@@ -70,3 +73,5 @@ s2p_adc_C0:
 
 	adc #$C0                           ; Carry already clear
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_get_cliped_pntr.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Get PNTR value clipped to 0-39 range in .Y, sets flags to compare with 0, can trash .A
 ;
@@ -18,3 +21,5 @@ screen_get_clipped_PNTR:
 @1:
 	cpy #$00
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_get_logical_line_end_ptr.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_get_logical_line_end_ptr:
 
@@ -27,3 +30,5 @@ screen_get_logical_line_end_39:
 
 	ldy #39
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_grow_logical_line.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_grow_logical_line_done_scroll:
 
@@ -142,3 +145,5 @@ screen_grow_logical_line_copy_done:
 	inx
 	jsr screen_clear_line
 	jmp screen_calculate_PNTR_LNMX
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_off.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper routine to blank screen
 ;
@@ -31,3 +34,5 @@ screen_off:
 
 	rts
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_on.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 ;
 ; Helper routine to show screen
 ;
@@ -22,3 +25,5 @@ screen_on:
 
 	rts
 }
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_preserve_sal_eal.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_preserve_sal_eal:
 
@@ -33,3 +36,5 @@ screen_common_sal_eal:
 	+phy_trash_a
 	+phx_trash_a
 	rts
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/screen/screen_restore_sal_eal.s

@@ -3,6 +3,9 @@
 ;; #LAYOUT# *   KERNAL_0 #TAKE
 ;; #LAYOUT# *   *        #IGNORE
 
+; Not on a Blade, whose Terminal Card holds the screen editor (src/kernal/arnitech)
+!ifndef CONFIG_ARNITECH_BLADE {
+
 
 screen_restore_sal_eal:
 
@@ -28,3 +31,5 @@ screen_restore_sal_eal:
 
  	jmp screen_common_sal_eal
  
+
+} ; CONFIG_ARNITECH_BLADE

src/kernal/time/udtim.s

@@ -63,6 +63,10 @@ udtim_keyboard:
 
 	+STUB_IMPLEMENTATION
 
+} else ifdef CONFIG_ARNITECH_BLADE {
+
+	jmp udtim_terminal_stop
+
 } else {
 
 	; According to [CM64], page 27, the action we have to perform is to copy