Document char printing routine

10 files changed, 1224 insertions, 9 deletions

diff --git a/Makefile b/Makefile
index a5c11e8..2cf4922 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ baserom := DMGAKVJ0.1
 
 dir_source := source
 dir_build := build
-dir_assets := assets
+dir_gfx := gfx
 dir_tools := tools
 
 RGBASM := rgbasm
@@ -12,13 +12,18 @@ RGBLINK := rgblink
 RGBFIX := rgbfix
 
 RGBASMFLAGS := -p 0xff -L
-RGBLINKFLAGS := -p 0xff -d -t
+RGBLINKFLAGS := -p 0xff -d
 RGBFIXFLAGS := -p 0xff -c -m 0x1b -r 0x03 -k "01" -i "AKVJ" -t "POKEPICROSS"
 
 rwildcard = $(foreach d, $(wildcard $1*), $(filter $(subst *, %, $2), $d) $(call rwildcard, $d/, $2))
-objects := $(patsubst $(dir_source)/%.asm, $(dir_build)/%.o, $(call rwildcard, $(dir_source)/, *.asm))
+
+objects := $(patsubst $(dir_source)/%.asm, $(dir_build)/%.o, \
+            $(call rwildcard, $(dir_source)/, *.asm))
 objects += $(dir_build)/shim.o
 
+gfx := $(patsubst $(dir_gfx)/%.png, $(dir_build)/gfx/%.bin, \
+        $(call rwildcard, $(dir_gfx)/, *.png))
+
 .SECONDEXPANSION:
 
 .PHONY: all
@@ -33,14 +38,17 @@ $(name).gbc: layout.link $(objects) | $(baserom)
 	$(RGBLINK) $(RGBLINKFLAGS) -O $(baserom) -l $< -n $(@:.gbc=.sym) -m $(@:.gbc=.map) -o $@ $(filter-out $<, $^)
 	$(RGBFIX) $(RGBFIXFLAGS) -v $@
 
-$(dir_build)/shim.asm: shim.sym
+$(dir_build)/shim.asm: shim.sym | $$(dir $$@)
 	$(dir_tools)/makeshim.py $< > $@
 
-$(dir_build)/%.o: $(dir_build)/%.asm | $$(dir $$@)
+$(dir_build)/%.o: $(dir_build)/%.asm | $(gfx) $$(dir $$@)
 	$(RGBASM) $(RGBASMFLAGS) -i $(dir_build)/ -i $(dir_source)/ -M $(@:.o=.d) -o $@ $<
-$(dir_build)/%.o: $(dir_source)/%.asm | $$(dir $$@)
+$(dir_build)/%.o: $(dir_source)/%.asm | $(gfx) $$(dir $$@)
 	$(RGBASM) $(RGBASMFLAGS) -i $(dir_build)/ -i $(dir_source)/ -M $(@:.o=.d) -o $@ $<
 
+$(dir_build)/gfx/%.bin: $(dir_gfx)/%.png | $$(dir $$@)
+	$(RGBGFX) -o $@ $<
+
 .PRECIOUS: %/
 %/:
 	mkdir -p $@
diff --git a/gfx/text_chars.png b/gfx/text_chars.png
new file mode 100644
index 0000000..688e0d5
--- /dev/null
+++ b/gfx/text_chars.png
diff --git a/gfx/textbox_border.png b/gfx/textbox_border.png
new file mode 100644
index 0000000..5393308
--- /dev/null
+++ b/gfx/textbox_border.png
diff --git a/mgbdis.sh b/mgbdis.sh
index 5fd331d..867c797 100755
--- a/mgbdis.sh
+++ b/mgbdis.sh
@@ -1,4 +1,10 @@
 #!/bin/sh
+
+if ! fgrep -qx ';APPEND' picross.sym; then
+    echo ';APPEND' >> picross.sym
+    cat shim_mgbdis.sym >> picross.sym
+fi
+
 ./mgbdis/mgbdis.py --overwrite \
     --disable-auto-ldh \
     --ld_c ldh_c \
diff --git a/shim.sym b/shim.sym
index 9725e70..bf06aa4 100644
--- a/shim.sym
+++ b/shim.sym
@@ -1,2 +1,28 @@
-00:c31e w_bank_temp
-00:c315 w_bank_rom
+00:c31e w_bank_temp ; db
+00:c317 w_farcall_target ; dw
+00:c315 w_bank_rom ; db
+
+00:c336 w_c336
+00:c35b w_vwf_char_start_x ; db
+00:c35c w_vwf_char_start_y ; db
+00:c35d w_vwf_char_end_x ; db
+00:c35e w_vwf_char_end_y ; db
+00:c35f w_vwf_char_addr ; dw
+00:c361 w_vwf_char_bank ; db
+00:c362 w_c362
+00:c363 w_c363
+00:c364 w_c364
+00:c365 w_c365
+00:c366 w_c366
+00:c367 w_c367
+00:c368 w_c368
+00:c369 w_c369
+00:c36a w_c36a
+00:c36b w_c36b
+00:c36c w_c36c
+00:c36d w_vwf_char_buffer ; ds ??
+00:cd6d w_cd6d
+00:cd6e w_cd6e
+
+01:d560 w_textbox_width ; db
+01:d561 w_textbox_height ; db
diff --git a/source/bank_00.asm b/source/bank_00.asm
index ac58661..a73c322 100644
--- a/source/bank_00.asm
+++ b/source/bank_00.asm
@@ -1,7 +1,553 @@
 INCLUDE "hardware.inc"
 
-SECTION "vram_copy", ROM0[$0fbd]
+SECTION "vwf_draw_char", ROM0[$0723]
+vwf_char_draw::
+    ld a, [w_vwf_char_start_x]
+    and $07
+    ld c, a
+    ld b, $00
+    ld hl, .pixel_masks_right
+    add hl, bc
+    ld a, [hl]
+    ld [w_c363], a
+    ld a, [w_vwf_char_end_x]
+    and $07
+    ld c, a
+    ld b, $00
+    ld hl, .pixel_masks_left
+    add hl, bc
+    ld a, [hl]
+    ld [w_c364], a
+    ld a, [w_vwf_char_start_x]
+    and $f8
+    ld c, a
+    ld a, [w_vwf_char_end_x]
+    and $f8
+    sub c
+    srl a
+    srl a
+    srl a
+    ld [w_c365], a
+    ld a, [w_vwf_char_start_x]
+    ld c, a
+    ld a, [w_vwf_char_end_x]
+    sub c
+    srl a
+    srl a
+    srl a
+    inc a
+    ld [w_c366], a
+    ld a, [w_vwf_char_start_x]
+    and $07
+    ld c, a
+    add $38
+    ld [w_c368], a
+    ld b, $00
+    ld hl, .pixel_masks_right
+    add hl, bc
+    ld a, [hl]
+    ld [w_c369], a
+    ld hl, .Data_000_0a2c
+    add hl, bc
+    ld a, [hl]
+    ld [w_c36a], a
+    ld a, [w_vwf_char_addr + 0]
+    ld c, a
+    ld a, [w_vwf_char_addr + 1]
+    ld b, a
+    ld a, [w_bank_rom]
+    push af
+    ld a, [w_vwf_char_bank]
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+
+    ld de, w_vwf_char_buffer
+    ld a, [w_vwf_char_start_y]
+    ld l, a
+    ld a, [w_vwf_char_start_x]
+    and $f8
+    ld h, a
+
+.Jump_000_07a9
+    xor a
+    ld [w_c36b], a
+    ld [w_c36c], a
+    ld a, [w_c366]
+    ld [w_c367], a
+    ld a, [w_c363]
+    ld [w_c362], a
+    push bc
+    push hl
+    ld a, [w_c365]
+    and a
+    jr nz, .jr_000_07d3
+
+    push hl
+    ld a, [w_c364]
+    ld hl, w_c363
+    and [hl]
+    ld [w_c362], a
+    pop hl
+    jp .Jump_000_0911
+
+.jr_000_07d3
+    push hl
+    ld a, [w_bank_rom]
+    push af
+    ld a, $23
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    push bc
+    push de
+    ld b, h
+    ld c, l
+    ld a, l
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    ld a, [w_cd6d]
+    ld l, a
+    ld a, [w_cd6e]
+    ld h, a
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, b
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, c
+    and $07
+    sla a
+    add l
+    ld l, a
+    pop de
+    pop bc
+    ld a, l
+    ld [de], a
+    inc de
+    ld a, h
+    ld [de], a
+    inc de
+    pop af
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    ld a, [w_c362]
+    ld [de], a
+    inc de
+    ld a, [bc]
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    ld [de], a
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36b], a
+    inc bc
+    inc de
+    ld a, [bc]
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    ld [de], a
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36c], a
+    ld a, c
+    add $0f
+    ld c, a
+    ld a, b
+    adc $00
+    ld b, a
+    inc de
+    pop hl
+    ld a, h
+    add $08
+    ld h, a
+    ld a, [w_c367]
+    dec a
+    ld [w_c367], a
+    ld a, [w_c365]
+    dec a
+    jp z, .Jump_000_090b
 
+.Jump_000_085f
+    push af
+    push hl
+    ld a, [w_bank_rom]
+    push af
+    ld a, $23
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    push bc
+    push de
+    ld b, h
+    ld c, l
+    ld a, l
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    ld a, [w_cd6d]
+    ld l, a
+    ld a, [w_cd6e]
+    ld h, a
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, b
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, c
+    and $07
+    sla a
+    add l
+    ld l, a
+    pop de
+    pop bc
+    ld a, l
+    ld [de], a
+    inc de
+    ld a, h
+    ld [de], a
+    inc de
+    pop af
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    ld a, $ff
+    ld [de], a
+    inc de
+    ld a, [w_c367]
+    and a
+    jr z, .jr_000_08b7
+
+    ld a, [bc]
+    inc bc
+
+.jr_000_08b7
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    push af
+    ld hl, w_c369
+    and [hl]
+    ld hl, w_c36b
+    or [hl]
+    ld [de], a
+    pop af
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36b], a
+    inc de
+    ld a, [w_c367]
+    and a
+    jr z, .jr_000_08e1
+
+    ld a, [bc]
+    push af
+    ld a, c
+    add $0f
+    ld c, a
+    ld a, b
+    adc $00
+    ld b, a
+    pop af
+
+.jr_000_08e1
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    push af
+    ld hl, w_c369
+    and [hl]
+    ld hl, w_c36c
+    or [hl]
+    ld [de], a
+    pop af
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36c], a
+    inc de
+    pop hl
+    ld a, h
+    add $08
+    ld h, a
+    ld a, [w_c367]
+    dec a
+    ld [w_c367], a
+    pop af
+    dec a
+    jp nz, .Jump_000_085f
+
+.Jump_000_090b
+    ld a, [w_c364]
+    ld [w_c362], a
+
+.Jump_000_0911
+    ld a, [w_bank_rom]
+    push af
+    ld a, $23
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    push bc
+    push de
+    ld b, h
+    ld c, l
+    ld a, l
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    ld a, [w_cd6d]
+    ld l, a
+    ld a, [w_cd6e]
+    ld h, a
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, b
+    and $f8
+    srl a
+    srl a
+    ld e, a
+    ld d, $00
+    add hl, de
+    ld a, [hl+]
+    ld h, [hl]
+    ld l, a
+    ld a, c
+    and $07
+    sla a
+    add l
+    ld l, a
+    pop de
+    pop bc
+    ld a, l
+    ld [de], a
+    inc de
+    ld a, h
+    ld [de], a
+    inc de
+    pop af
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    ld a, [w_c362]
+    ld [de], a
+    inc de
+    ld a, [w_c367]
+    and a
+    jr z, .jr_000_0968
+
+    ld a, [bc]
+    inc bc
+
+.jr_000_0968
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    push af
+    ld hl, w_c369
+    and [hl]
+    ld hl, w_c36b
+    or [hl]
+    ld [de], a
+    pop af
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36b], a
+    inc de
+    ld a, [w_c367]
+    and a
+    jr z, .jr_000_0992
+
+    ld a, [bc]
+    push af
+    ld a, c
+    add $0f
+    ld c, a
+    ld a, b
+    adc $00
+    ld b, a
+    pop af
+
+.jr_000_0992
+    ld l, a
+    ld a, [w_c368]
+    ld h, a
+    ld a, [hl]
+    push af
+    ld hl, w_c369
+    and [hl]
+    ld hl, w_c36c
+    or [hl]
+    ld [de], a
+    pop af
+    ld hl, w_c36a
+    and [hl]
+    ld [w_c36c], a
+    inc de
+    pop hl
+    pop bc
+    inc bc
+    inc bc
+    ld a, c
+    and $0f
+    jr nz, .jr_000_09bc
+
+    ld a, c
+    add $f0
+    ld c, a
+    ld a, b
+    adc $00
+    ld b, a
+
+.jr_000_09bc
+    inc l
+    ld a, [w_vwf_char_end_y]
+    cp l
+    jp nc, .Jump_000_07a9
+
+    xor a
+    ld [de], a
+    inc de
+    ld [de], a
+
+	; Write tiles stored in the buffer
+    ld bc, w_vwf_char_buffer
+
+	; Ignore hblank (update during vblank?)
+    ld a, [w_c336]
+    bit 7, a
+    jr z, .write_tile_ignore_hblank_loop
+
+.write_tile_loop
+	; Get location to write to
+    ld a, [bc]
+    ld l, a
+    inc bc
+    ld a, [bc]
+    ld h, a
+    or l
+    jr z, .write_tile_done
+
+	; Get mask in e, and pixels in d
+    inc bc
+    ld a, [bc]
+    ld e, a
+    inc bc
+    ld a, [bc]
+    ld d, a
+    inc bc
+
+.hblank_finish
+    ldh a, [rSTAT]
+    and STATF_LCD
+    jr z, .hblank_finish
+
+.hblank_enter
+    ldh a, [rSTAT]
+    and STATF_LCD
+    jr nz, .hblank_enter
+
+	; Write pixels high bit, preserving background
+    ld a, d
+    xor [hl]
+    and e
+    xor [hl]
+    ld [hl+], a
+    ld a, [bc]
+    ld d, a
+    inc bc
+
+.hblank_next
+    ldh a, [rSTAT]
+    and STATF_LCD
+    jr nz, .hblank_next
+
+	; Write 8 pixels low bit, preserving background
+    ld a, d
+    xor [hl]
+    and e
+    xor [hl]
+    ld [hl], a
+    jr .write_tile_loop
+
+.write_tile_done
+    pop af
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    ret
+
+.write_tile_ignore_hblank_loop
+	; Get location to write to
+    ld a, [bc]
+    ld l, a
+    inc bc
+    ld a, [bc]
+    ld h, a
+    or l
+    jr z, .write_tile_done
+
+	; Get mask in e, and pixels in d
+    inc bc
+    ld a, [bc]
+    ld e, a
+    inc bc
+    ld a, [bc]
+    inc bc
+
+	; Write pixels high bit, preserving background
+    xor [hl]
+    and e
+    xor [hl]
+    ld [hl+], a
+    ld a, [bc]
+    inc bc
+
+	; Write 8 pixels low bit, preserving background
+    xor [hl]
+    and e
+    xor [hl]
+    ld [hl], a
+    jr .write_tile_ignore_hblank_loop
+
+.pixel_masks_right:
+    db $ff, $7f, $3f, $1f, $0f, $07, $03, $01
+
+.Data_000_0a2c:
+	db $00
+
+.pixel_masks_left:
+	db $80, $c0, $e0, $f0, $f8, $fc, $fe, $ff
+
+	db $00, $00, $68, $01, $d0, $02, $38, $04, $a0, $05, $08, $07, $70, $08, $d8, $09, $40, $0b, $a8, $0c, $fa, $57, $c3, $a7, $c8, $f0, $00, $f6, $30, $e0, $00, $f0, $4d, $3e, $01, $e0, $4d, $10, $6f
+
+SECTION "vram_copy", ROM0[$0fbd]
 ; Parameters:
 ; a - bank
 ; hl - source
@@ -54,3 +600,555 @@ vram_copy::
     ld [w_bank_rom], a
     ld [rROMB0], a
     ret
+
+SECTION "farcall", ROM0[$10cd]
+; Save current bank and jump to w_farcall_target in w_bank_temp
+farcall::
+    push af
+    push af
+    push af
+    push hl
+    ld hl, sp + 4
+    ld a, [w_farcall_target + 0]
+    ld [hl+], a
+    ld a, [w_farcall_target + 1]
+    ld [hl+], a
+    ld a, [w_bank_rom]
+    ld [hl], a
+    ld a, [w_bank_temp]
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    pop hl
+    pop af
+    ret
+
+; Return to bank and address in stack
+farcall_ret::
+    push af
+    push hl
+    ld hl, sp + 4
+    ld a, [hl]
+    ld [w_bank_rom], a
+    ld [rROMB0], a
+    pop hl
+    pop af
+    inc sp
+    inc sp
+    ret
+
+SECTION "text_chars_offsets", ROM0[$286f]
+text_chars_widths::
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 4
+    db 7
+    db 7
+    db 6
+    db 6
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 8
+    db 7
+    db 6
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 6
+    db 6
+    db 6
+    db 6
+    db 7
+    db 6
+    db 7
+    db 6
+    db 7
+    db 5
+    db 5
+    db 5
+    db 4
+    db 9
+    db 8
+    db 7
+    db 8
+    db 8
+    db 9
+    db 7
+    db 9
+    db 8
+    db 8
+    db 8
+    db 8
+    db 8
+    db 8
+    db 8
+    db 9
+    db 9
+    db 9
+    db 8
+    db 9
+    db 9
+    db 9
+    db 9
+    db 8
+    db 10
+    db 5
+    db 5
+    db 4
+    db 4
+    db 5
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 5
+    db 7
+    db 7
+    db 6
+    db 7
+    db 6
+    db 7
+    db 7
+    db 7
+    db 8
+    db 7
+    db 7
+    db 6
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 6
+    db 7
+    db 6
+    db 7
+    db 7
+    db 7
+    db 7
+    db 5
+    db 5
+    db 5
+    db 4
+    db 9
+    db 8
+    db 9
+    db 9
+    db 9
+    db 8
+    db 8
+    db 9
+    db 9
+    db 9
+    db 9
+    db 8
+    db 8
+    db 9
+    db 6
+    db 8
+    db 8
+    db 9
+    db 8
+    db 8
+    db 9
+    db 7
+    db 8
+    db 8
+    db 8
+    db 5
+    db 4
+    db 5
+    db 5
+    db 5
+    db 6
+    db 4
+    db 6
+    db 6
+    db 6
+    db 6
+    db 6
+    db 6
+    db 6
+    db 6
+    db 5
+    db 7
+    db 6
+    db 7
+    db 6
+    db 6
+    db 6
+    db 7
+    db 6
+    db 3
+    db 7
+    db 6
+    db 6
+    db 7
+    db 7
+    db 7
+    db 6
+    db 7
+    db 6
+    db 6
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 7
+    db 6
+    db 6
+    db 5
+    db 5
+    db 5
+    db 5
+    db 6
+    db 6
+    db 5
+    db 1
+    db 5
+    db 5
+    db 2
+    db 7
+    db 5
+    db 5
+    db 5
+    db 5
+    db 5
+    db 5
+    db 5
+    db 5
+    db 5
+    db 7
+    db 6
+    db 6
+    db 5
+    db 0
+    db 4
+    db 4
+    db 5
+    db 5
+    db 8
+    db 5
+    db 5
+    db 4
+    db 5
+    db 5
+    db 2
+    db 2
+    db 2
+    db 4
+    db 3
+    db 3
+    db 7
+    db 8
+    db 5
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+    db 0
+
+text_chars_offsets::
+    dw $0000
+    dw $0020
+    dw $0040
+    dw $0060
+    dw $0080
+    dw $00a0
+    dw $00c0
+    dw $00e0
+    dw $0104
+    dw $0124
+    dw $0144
+    dw $0164
+    dw $0184
+    dw $01a4
+    dw $01c4
+    dw $01e4
+    dw $0208
+    dw $0228
+    dw $0248
+    dw $0268
+    dw $0288
+    dw $02a8
+    dw $02c8
+    dw $02e8
+    dw $030c
+    dw $032c
+    dw $034c
+    dw $036c
+    dw $038c
+    dw $03ac
+    dw $03cc
+    dw $03ec
+    dw $0500
+    dw $0520
+    dw $0540
+    dw $0560
+    dw $0580
+    dw $05a0
+    dw $05c0
+    dw $05e0
+    dw $0604
+    dw $0624
+    dw $0644
+    dw $0664
+    dw $0684
+    dw $06a4
+    dw $06c4
+    dw $06e4
+    dw $0708
+    dw $0728
+    dw $0748
+    dw $0768
+    dw $0788
+    dw $07a8
+    dw $07c8
+    dw $07e8
+    dw $080c
+    dw $082c
+    dw $084c
+    dw $086c
+    dw $088c
+    dw $08ac
+    dw $08cc
+    dw $08ec
+    dw $0a00
+    dw $0a20
+    dw $0a40
+    dw $0a60
+    dw $0a80
+    dw $0aa0
+    dw $0ac0
+    dw $0ae0
+    dw $0b04
+    dw $0b24
+    dw $0b44
+    dw $0b64
+    dw $0b84
+    dw $0ba4
+    dw $0bc4
+    dw $0be4
+    dw $0c08
+    dw $0c28
+    dw $0c48
+    dw $0c68
+    dw $0c88
+    dw $0ca8
+    dw $0cc8
+    dw $0ce8
+    dw $0d0c
+    dw $0d2c
+    dw $0d4c
+    dw $0d6c
+    dw $0d8c
+    dw $0dac
+    dw $0dcc
+    dw $0dec
+    dw $0f00
+    dw $0f20
+    dw $0f40
+    dw $0f60
+    dw $0f80
+    dw $0fa0
+    dw $0fc0
+    dw $0fe0
+    dw $1004
+    dw $1024
+    dw $1044
+    dw $1064
+    dw $1084
+    dw $10a4
+    dw $10c4
+    dw $10e4
+    dw $1108
+    dw $1128
+    dw $1148
+    dw $1168
+    dw $1188
+    dw $11a8
+    dw $11c8
+    dw $11e8
+    dw $120c
+    dw $122c
+    dw $124c
+    dw $126c
+    dw $128c
+    dw $12ac
+    dw $12cc
+    dw $12ec
+    dw $1400
+    dw $1420
+    dw $1440
+    dw $1460
+    dw $1480
+    dw $14a0
+    dw $14c0
+    dw $14e0
+    dw $1504
+    dw $1524
+    dw $1544
+    dw $1564
+    dw $1584
+    dw $15a4
+    dw $15c4
+    dw $15e4
+    dw $1608
+    dw $1628
+    dw $1648
+    dw $1668
+    dw $1688
+    dw $16a8
+    dw $16c8
+    dw $16e8
+    dw $170c
+    dw $172c
+    dw $174c
+    dw $176c
+    dw $178c
+    dw $17ac
+    dw $17cc
+    dw $17ec
+    dw $1900
+    dw $1920
+    dw $1940
+    dw $1960
+    dw $1980
+    dw $19a0
+    dw $19c0
+    dw $19e0
+    dw $1a04
+    dw $1a24
+    dw $1a44
+    dw $1a64
+    dw $1a84
+    dw $1aa4
+    dw $1ac4
+    dw $1ae4
+    dw $1b08
+    dw $1b28
+    dw $1b48
+    dw $1b68
+    dw $1b88
+    dw $1ba8
+    dw $1bc8
+    dw $1be8
+    dw $1c0c
+    dw $1c2c
+    dw $1c4c
+    dw $1c6c
+    dw $1c8c
+    dw $1cac
+    dw $1ccc
+    dw $1cec
+    dw $1e00
+    dw $1e20
+    dw $1e40
+    dw $1e60
+    dw $1e80
+    dw $1ea0
+    dw $1ec0
+    dw $1ee0
+    dw $1f04
+    dw $1f24
+    dw $1f44
+    dw $1f64
+    dw $1f84
+    dw $1fa4
+    dw $1fc4
+    dw $1fe4
+    dw $2008
+    dw $2028
+    dw $2048
+    dw $2068
+    dw $2088
+    dw $20a8
+    dw $20c8
+    dw $20e8
+    dw $210c
+    dw $212c
+    dw $214c
+    dw $216c
+    dw $218c
+    dw $21ac
+    dw $21cc
+    dw $21ec
+    dw $2300
+    dw $2320
+    dw $2340
+    dw $2360
+    dw $2380
+    dw $23a0
+    dw $23c0
+    dw $23e0
+    dw $2404
+    dw $2424
+    dw $2444
+    dw $2464
+    dw $2484
+    dw $24a4
+    dw $24c4
+    dw $24e4
+    dw $2508
+    dw $2528
+    dw $2548
+    dw $2568
+    dw $2588
+    dw $25a8
+    dw $25c8
+    dw $25e8
+    dw $260c
+    dw $262c
+    dw $264c
+    dw $266c
+    dw $268c
+    dw $26ac
+    dw $26cc
+    dw $26ec
diff --git a/source/bank_02.asm b/source/bank_02.asm
new file mode 100644
index 0000000..1300a2e
--- /dev/null
+++ b/source/bank_02.asm
@@ -0,0 +1,61 @@
+SECTION "print_char", ROMX[$4c80], BANK[$02]
+; Parameters:
+; de - character to print
+; b - x position
+; c - y position
+text_char_draw::
+    push de
+
+	; Get char address
+    sla e
+    rl d
+    ld hl, text_chars_offsets
+    add hl, de
+    ld e, [hl]
+    inc hl
+    ld d, [hl]
+    ld hl, gfx_text_chars
+    add hl, de
+    ld a, l
+    ld [w_vwf_char_addr + 0], a
+    ld a, h
+    ld [w_vwf_char_addr + 1], a
+    ld a, BANK(gfx_text_chars)
+    ld [w_vwf_char_bank], a
+
+    ld a, b
+    ld [w_vwf_char_start_x], a
+
+	; Get character width
+    pop de
+    ld hl, text_chars_widths
+    add hl, de
+    ld a, [hl]
+    and a
+    jp z, farcall_ret
+
+	; Check we aren't drawing outside the textbox
+    push af
+    add b
+    ld hl, w_textbox_width
+    cp [hl]
+    jr c, .inside_width
+    pop af
+    jp farcall_ret
+.inside_width
+    ld [w_vwf_char_end_x], a
+
+    ld a, c
+    ld [w_vwf_char_start_y], a
+    add 9
+    ld hl, w_textbox_height
+    cp [hl]
+    jr c, .inside_height
+    pop af
+    jp farcall_ret
+.inside_height
+    ld [w_vwf_char_end_y], a
+
+    call vwf_char_draw
+    pop af
+    jp farcall_ret
diff --git a/source/bank_3c.asm b/source/bank_3c.asm
new file mode 100644
index 0000000..f113abf
--- /dev/null
+++ b/source/bank_3c.asm
@@ -0,0 +1,8 @@
+SECTION "textbox_border_load", ROMX[$4d16], BANK[$3c]
+textbox_border_load:
+    ld a, BANK(gfx_textbox_border)
+    ld hl, gfx_textbox_border
+    ld de, $8900
+    ld bc, gfx_textbox_border.end - gfx_textbox_border
+    call vram_copy
+    jp farcall_ret
diff --git a/source/bank_69.asm b/source/bank_69.asm
new file mode 100644
index 0000000..ccd64a6
--- /dev/null
+++ b/source/bank_69.asm
@@ -0,0 +1,4 @@
+SECTION "gfx_textbox_border", ROMX[$6000], BANK[$69]
+gfx_textbox_border::
+INCBIN "gfx/textbox_border.bin"
+.end::
diff --git a/source/bank_6f.asm b/source/bank_6f.asm
new file mode 100644
index 0000000..d72f8d7
--- /dev/null
+++ b/source/bank_6f.asm
@@ -0,0 +1,4 @@
+SECTION "gfx_text_chars", ROMX[$4000], BANK[$6f]
+gfx_text_chars::
+INCBIN "gfx/text_chars.bin"
+.end::