;
; Graphics driver for the 160x102x16 mode on the Lynx.
;
; All the drawing functions are simply done by sprites as the sprite
; engine is the only way to do fast graphics on a Lynx.
;
; This code is written by Karri Kaksonen, 2004 for the cc65 compiler.
;

        .include        "zeropage.inc"
        .include        "../extzp.inc"

        .include        "tgi-kernel.inc"
        .include        "tgi-error.inc"

        .include        "lynx.inc"

        .macpack        generic

; ------------------------------------------------------------------------
; Header. Includes jump table and constants.

.segment        "JUMPTABLE"

; First part of the header is a structure that has a magic and defines the
; capabilities of the driver

        .byte   $74, $67, $69           ; "tgi"
        .byte   TGI_API_VERSION         ; TGI API version number
        .addr   $0000                   ; Library reference
        .word   160                     ; X resolution
        .word   102                     ; Y resolution
        .byte   16                      ; Number of drawing colors
        .byte   2                       ; Number of screens available
        .byte   8                       ; System font X size
        .byte   8                       ; System font Y size
        .word   $0100                   ; Aspect ratio (square pixel LCD)
        .byte   TGI_BM_FONT_FINESCALE   ; TGI driver flags

; Next comes the jump table. Currently all entries must be valid and may point
; to an RTS for test versions (function not implemented). A future version may
; allow for emulation: In this case the vector will be zero. Emulation means
; that the graphics kernel will emulate the function by using lower level
; primitives - for example ploting a line by using calls to SETPIXEL.

        .addr   INSTALL
        .addr   UNINSTALL
        .addr   INIT
        .addr   DONE
        .addr   GETERROR
        .addr   CONTROL
        .addr   CLEAR
        .addr   SETVIEWPAGE
        .addr   SETDRAWPAGE
        .addr   SETCOLOR
        .addr   SETPALETTE
        .addr   GETPALETTE
        .addr   GETDEFPALETTE
        .addr   SETPIXEL
        .addr   GETPIXEL
        .addr   LINE
        .addr   BAR
        .addr   TEXTSTYLE
        .addr   OUTTEXT
        .addr   IRQ


; ------------------------------------------------------------------------
; Data.

; Variables mapped to the zero page segment variables. Some of these are
; used for passing parameters to the driver.

X1              := ptr1
Y1              := ptr2
X2              := ptr3
Y2              := ptr4

STRPTR          := ptr3
FONTOFF         := ptr4
STROFF          := tmp3
STRLEN          := tmp4

; Absolute variables used in the code

.bss

ERROR:          .res    1       ; Error code

DRAWINDEX:      .res    1       ; Pen to use for drawing
VIEWPAGEL:      .res    1
VIEWPAGEH:      .res    1
DRAWPAGEL:      .res    1
DRAWPAGEH:      .res    1

; Text output stuff
TEXTMAGX:       .res    1
TEXTMAGY:       .res    1
TEXTDIR:        .res    1
BGINDEX:        .res    1       ; Pen to use for text background

; Double buffer IRQ stuff
DRAWPAGE:       .res    1
SWAPREQUEST:    .res    1

text_bitmap:    .res    8*(1+20+1)+1
; 8 rows with (one offset-byte plus 20 character bytes plus one fill-byte) plus one 0-offset-byte

; Constants and tables

.rodata

DEFPALETTE:     .byte   >$011
                .byte   >$34d
                .byte   >$9af
                .byte   >$9b8
                .byte   >$777
                .byte   >$335
                .byte   >$448
                .byte   >$75e
                .byte   >$d5f
                .byte   >$c53
                .byte   >$822
                .byte   >$223
                .byte   >$484
                .byte   >$8e5
                .byte   >$cf5
                .byte   >$fff
                .byte   <$011
                .byte   <$34d
                .byte   <$9af
                .byte   <$9b8
                .byte   <$777
                .byte   <$335
                .byte   <$448
                .byte   <$75e
                .byte   <$d5f
                .byte   <$c53
                .byte   <$822
                .byte   <$223
                .byte   <$484
                .byte   <$8e5
                .byte   <$cf5
                .byte   <$fff

PALETTESIZE     = * - DEFPALETTE

.code

; ------------------------------------------------------------------------
; INSTALL routine. Is called after the driver is loaded into memory. May
; initialize anything that has to be done just once. Is probably empty
; most of the time.
;
; Must set an error code: NO
;

INSTALL:
        lda     #1
        sta     TEXTMAGX
        sta     TEXTMAGY
        stz     BGINDEX
        stz     DRAWPAGE
        stz     SWAPREQUEST
        rts


; ------------------------------------------------------------------------
; UNINSTALL routine. Is called before the driver is removed from memory. May
; clean up anything done by INSTALL but is probably empty most of the time.
;
; Must set an error code: NO
;

UNINSTALL:
        rts


; ------------------------------------------------------------------------
; INIT: Changes an already installed device from text mode to graphics
; mode.
; Note that INIT/DONE may be called multiple times while the driver
; is loaded, while INSTALL is only called once, so any code that is needed
; to initializes variables and so on must go here. Setting palette and
; clearing the screen is not needed because this is called by the graphics
; kernel later.
; The graphics kernel will never call INIT when a graphics mode is already
; active, so there is no need to protect against that.
;
; Must set an error code: YES
;

INIT:
; Enable interrupts for VBL
        lda     #$80
        tsb     VTIMCTLA
; Set up collision buffer to $A058
        lda     #$58
        sta     COLLBASL
        lda     #$A0
        sta     COLLBASH
; Put collision index before sprite data
        lda     #$FF
        sta     COLLOFFL
        lda     #$FF
        sta     COLLOFFH
; Done, reset the error code
        lda     #TGI_ERR_OK
        sta     ERROR
        rts

; ------------------------------------------------------------------------
; DONE: Will be called to switch the graphics device back into text mode.
; The graphics kernel will never call DONE when no graphics mode is active,
; so there is no need to protect against that.
;
; Must set an error code: NO
;

DONE:
        rts

; ------------------------------------------------------------------------
; GETERROR: Return the error code in A and clear it.

GETERROR:
        ldx     #TGI_ERR_OK
        lda     ERROR
        stx     ERROR
        rts

; ------------------------------------------------------------------------
; CONTROL: Platform/driver specific entry point.
;
; Must set an error code: YES
;
; The TGI lacks a way to draw sprites. As that functionality is vital to
; Lynx games we borrow this CONTROL function to implement the still
; missing tgi_draw_sprite funtion. To use this in your C-program
; do a #define tgi_draw_sprite(spr) tgi_ioctl(0, spr)
;
; To do a flip-screen call tgi_ioctl(1, 0)
;
; To set the background index for text outputs call tgi_ioctl(2, bgindex)
;
; To set the frame rate for the display hardware call tgi_ioctl(3, rate)
;
; To check if the drawing engine is busy with the previous swap you can
; call tgi_ioctl(4, 0). It returns 0 if idle and 1 if busy
;
; To update displays you can call tgi_ioctl(4, 1) it will wait for the
; next VBL interrupt and swap draw and view buffers.
;
; Activate or deactivate collision detection by calling tgi_ioctl(5, 0/1).

CONTROL:
        pha                     ; Almost all control routines succeed
        lda     #TGI_ERR_OK
        sta     ERROR
        pla

        cmp     #5
        bne     ControlSwap
        lda     ptr1            ; Activate/deactivate collision detection
        bne     @L0
        lda     #%00000001      ; tgi_clear does not erase collision buffer
        sta     cls_sprite
        lda     #%00100000
        sta     cls_sprite+2
        lda     __sprsys
        ora     #$20
        bra     @L1
@L0:    lda     #%00000000      ; tgi_clear erases collision buffer
        sta     cls_sprite
        sta     cls_sprite+2
        lda     __sprsys
        and     #$df
@L1:    sta     __sprsys
        sta     SPRSYS
        rts

ControlSwap:
        cmp     #4
        bne     ControlFramerate

        lda     ptr1            ; Swap request
        bne     @L0
        lda     SWAPREQUEST
        rts
@L0:    sta     SWAPREQUEST
        rts

ControlFramerate:
        cmp     #3
        bne     ControlTextBG

        lda     ptr1
        cmp     #75             ; Set framerate
        beq     rate75
        cmp     #60
        beq     rate60
        cmp     #50
        beq     rate50
        lda     #TGI_ERR_INV_ARG
        sta     ERROR
        rts
rate50: lda     #$bd            ; 50 Hz
        ldx     #$31
        bra     setRate
rate60: lda     #$9e            ; 60 Hz
        ldx     #$29
        bra     setRate
rate75: lda     #$7e            ; 75 Hz
        ldx     #$20
setRate:
        sta     HTIMBKUP
        stx     PBKUP
        rts

ControlTextBG:
        cmp     #2
        bne     ControlFlipScreen

        lda     ptr1            ; Set text background color
        sta     BGINDEX
        rts

ControlFlipScreen:
        cmp     #1
        bne     ControlDrawSprite

        lda     __sprsys        ; Flip screen
        eor     #8
        sta     __sprsys
        sta     SPRSYS
        lda     __viddma
        eor     #2
        sta     __viddma
        sta     DISPCTL
        ldy     VIEWPAGEL
        ldx     VIEWPAGEH
        and     #2
        beq     NotFlipped
        clc
        tya
        adc     #<8159
        tay
        txa
        adc     #>8159
        tax
NotFlipped:
        sty     DISPADRL
        stx     DISPADRH
        rts

ControlDrawSprite:
        lda     ptr1            ; Get the sprite address
        ldx     ptr1+1

draw_sprite:                    ; Draw it in render buffer
        sta     SCBNEXTL
        stx     SCBNEXTH
        lda     DRAWPAGEL
        ldx     DRAWPAGEH
        sta     VIDBASL
        stx     VIDBASH
        lda     #1
        sta     SPRGO
        stz     SDONEACK
@L0:    stz     CPUSLEEP
        lda     SPRSYS
        lsr
        bcs     @L0
        stz     SDONEACK
        lda     #TGI_ERR_OK
        sta     ERROR
        rts

; ------------------------------------------------------------------------
; CLEAR: Clears the screen.
;
; Must set an error code: NO
;

.rodata
pixel_bitmap:
        .byte   3,%10000100,%00000000, $0       ; A pixel bitmap
.data
cls_coll:
        .byte   0
cls_sprite:
        .byte   %00000001                       ; A pixel sprite
        .byte   %00010000
        .byte   %00100000
        .addr   0,pixel_bitmap
        .word   0
        .word   0
        .word   $a000                           ; 160
        .word   $6600                           ; 102
        .byte   $00

.code
CLEAR:  lda     #<cls_sprite
        ldx     #>cls_sprite
        bra     draw_sprite

; ------------------------------------------------------------------------
; SETVIEWPAGE: Set the visible page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
;
; Must set an error code: NO (will only be called if page ok)
;
; It is a good idea to call this function during the vertical blanking
; period. If you call it in the middle of the screen update then half of
; the drawn frame will be from the old buffer and the other half is
; from the new buffer. This is usually noticed by the user.

SETVIEWPAGE:
        cmp     #1
        beq     @L1             ; page == maxpages-1
        ldy     #<$e018         ; page 0
        ldx     #>$e018
        bra     @L2
@L1:
        ldy     #<$c038         ; page 1
        ldx     #>$c038
@L2:
        sty     VIEWPAGEL       ; Save viewpage for getpixel
        stx     VIEWPAGEH

        lda     __viddma        ; Process flipped displays
        and     #2
        beq     @L3
        clc
        tya
        adc     #<8159
        tay
        txa
        adc     #>8159
        tax
@L3:
        sty     DISPADRL        ; $FD94
        stx     DISPADRH        ; $FD95
        rts

; ------------------------------------------------------------------------
; SETDRAWPAGE: Set the drawable page. Called with the new page in A (0..n).
; The page number is already checked to be valid by the graphics kernel.
;
; Must set an error code: NO (will only be called if page ok)
;

SETDRAWPAGE:
        cmp     #1
        beq     @L1                 ; page == maxpages-1
        lda     #<$e018             ; page 0
        ldx     #>$e018
        bra     @L2
@L1:
        lda     #<$c038             ; page 1
        ldx     #>$c038
@L2:
        sta     DRAWPAGEL
        stx     DRAWPAGEH
        rts

; ------------------------------------------------------------------------
; IRQ: VBL interrupt handler
;

IRQ:
        lda     INTSET          ; Poll all pending interrupts
        and     #VBL_INTERRUPT
        beq     IRQEND          ; Exit if not a VBL interrupt

        lda     SWAPREQUEST
        beq     @L0
        lda     DRAWPAGE
        jsr     SETVIEWPAGE
        lda     DRAWPAGE
        eor     #1
        sta     DRAWPAGE
        jsr     SETDRAWPAGE
        stz     SWAPREQUEST
@L0:
IRQEND:
        clc
        rts

; ------------------------------------------------------------------------
; SETCOLOR: Set the drawing color (in A). The new color is already checked
; to be in a valid range (0..maxcolor-1).
;
; Must set an error code: NO (will only be called if color ok)
;

SETCOLOR:
        sta     DRAWINDEX
        rts

; ------------------------------------------------------------------------
; SETPALETTE: Set the palette (not available with all drivers/hardware).
; A pointer to the palette is passed in ptr1. Must set an error if palettes
; are not supported
;
; Must set an error code: YES
;

SETPALETTE:
        ldy     #31
@L1:    lda     (ptr1),y
        sta     GCOLMAP,y   ; $FDA0
        dey
        bpl     @L1

; Done, reset the error code

        lda     #TGI_ERR_OK
        sta     ERROR
        rts

; ------------------------------------------------------------------------
; GETPALETTE: Return the current palette in A/X. Even drivers that cannot
; set the palette should return the default palette here, so there's no
; way for this function to fail.
;
; Must set an error code: NO
;

GETPALETTE:
        lda     #<GCOLMAP       ; $FDA0
        ldx     #>GCOLMAP
        rts

; ------------------------------------------------------------------------
; GETDEFPALETTE: Return the default palette for the driver in A/X. All
; drivers should return something reasonable here, even drivers that don't
; support palettes, otherwise the caller has no way to determine the colors
; of the (not changeable) palette.
;
; Must set an error code: NO (all drivers must have a default palette)
;

GETDEFPALETTE:
        lda     #<DEFPALETTE
        ldx     #>DEFPALETTE
        rts

; ------------------------------------------------------------------------
; SETPIXEL: Draw one pixel at X1/Y1 = ptr1/ptr2 with the current drawing
; color. The coordinates passed to this function are never outside the
; visible screen area, so there is no need for clipping inside this function.
;
; Must set an error code: NO
;

.data
pixel_coll:
        .byte   0
pixel_sprite:
        .byte   %00000001                       ; A pixel sprite
        .byte   %00010000
        .byte   %00100000
        .addr   0,pixel_bitmap
pix_x:  .word   0
pix_y:  .word   0
        .word   $100
        .word   $100
pix_c:  .byte   $00

.code
SETPIXEL:
        lda     X1
        sta     pix_x
        lda     Y1
        sta     pix_y
        lda     DRAWINDEX
        sta     pix_c
        lda     #<pixel_sprite
        ldx     #>pixel_sprite
        jmp     draw_sprite

; ------------------------------------------------------------------------
; GETPIXEL: Read the color value of a pixel and return it in A/X. The
; coordinates passed to this function are never outside the visible screen
; area, so there is no need for clipping inside this function.


GETPIXEL:
        lda     Y1
        sta     MATHD   ; Hardware multiply
        stz     MATHC
        lda     #80
        sta     MATHB
        stz     MATHA
        lda     X1
        lsr     A
        php
        tay

        clc
        lda     VIEWPAGEL
        adc     MATHH
        sta     ptr1
        lda     VIEWPAGEH
        adc     MATHG
        sta     ptr1+1

        ldx     #0
        lda     #15
        sta     MAPCTL
        lda     (ptr1),y
        tay
        lda     #$0c
        sta     MAPCTL
        tya
        plp
        bcc     @L1
        and     #$f
        rts

@L1:    lsr     A
        lsr     A
        lsr     A
        lsr     A
        rts

; ------------------------------------------------------------------------
; LINE: Draw a line from X1/Y1 to X2/Y2, where X1/Y1 = ptr1/ptr2 and
; X2/Y2 = ptr3/ptr4 using the current drawing color.
;
; Must set an error code: NO
;

.data
line_coll:
        .byte   0
line_sprite:
        .byte   0               ; Will be replaced by the code
        .byte   %00110000
        .byte   %00100000
        .word   0,pixel_bitmap
line_x:
        .word    0
line_y:
        .word    0
line_sx:
        .word    $100
line_sy:
        .word    $100
        .word    0
line_tilt:
        .word    0
line_c:
        .byte    $e

.code
LINE:
        lda     DRAWINDEX
        sta     line_c
        stz     line_sx
        stz     line_sy

        sec
        lda     X2
        sbc     X1
        lda     X2+1
        sbc     X1+1
        bpl     @L1
        lda     X1
        ldx     X2
        sta     X2
        stx     X1
        lda     X1+1
        ldx     X2+1
        sta     X2+1
        stx     X1+1
        lda     Y1
        ldx     Y2
        sta     Y2
        stx     Y1
        lda     Y1+1
        ldx     Y2+1
        sta     Y2+1
        stx     Y1+1
@L1:
        lda     #%00000000      ; Not flipped
        sta     line_sprite

        sec
        lda     Y2
        sbc     Y1
        sta     Y2
        lda     Y2+1
        sbc     Y1+1
        sta     Y2+1
        bpl     @L2
        sec
        lda     #0
        sbc     Y2
        sta     Y2
        lda     #0
        sbc     Y2+1
        sta     Y2+1
        lda     #%00010000      ; Vertical flip
        sta     line_sprite
@L2:
        lda     X1
        sta     line_x
        lda     X1+1
        sta     line_x+1
        lda     Y1
        sta     line_y
        lda     Y1+1
        sta     line_y+1

        lda     Y2
        ina
        sta     line_sy+1
        sta     MATHP           ; hardware divide
        stz     MATHN

        stz     MATHH
        stz     MATHG
        sec
        lda     X2
        sbc     X1
        ina
        sta     MATHF
        stz     MATHE
@L3:
        lda     SPRSYS
        bmi     @L3             ; wait for math done (bit 7 of sprsys)
        lda     MATHC
        sta     line_tilt
        lda     MATHB
        sta     line_tilt+1
        bne     @L4
        lda     #1
        sta     line_sx+1
        bra     @L6
@L4:
        bit     line_tilt
        bpl     @L5
        ina
@L5:
        sta     line_sx+1
@L6:
        lda     #<line_sprite
        ldx     #>line_sprite
        jmp     draw_sprite

; ------------------------------------------------------------------------
; BAR: Draw a filled rectangle with the corners X1/Y1, X2/Y2, where
; X1/Y1 = ptr1/ptr2 and X2/Y2 = ptr3/ptr4 using the current drawing color.
; Contrary to most other functions, the graphics kernel will sort and clip
; the coordinates before calling the driver, so on entry the following
; conditions are valid:
;       X1 <= X2
;       Y1 <= Y2
;       (X1 >= 0) && (X1 < XRES)
;       (X2 >= 0) && (X2 < XRES)
;       (Y1 >= 0) && (Y1 < YRES)
;       (Y2 >= 0) && (Y2 < YRES)
;
; Must set an error code: NO
;

.data
bar_coll:
        .byte   0
bar_sprite:
        .byte   %00000001                       ; A pixel sprite
        .byte   %00010000
        .byte   %00100000
        .addr   0,pixel_bitmap
bar_x:  .word   0
bar_y:  .word   0
bar_sx: .word   $0100
bar_sy: .word   $0100
bar_c:  .byte   $00

.code
BAR:    lda     X1
        sta     bar_x
        lda     Y1
        sta     bar_y
        lda     X2
        sec
        sbc     X1
        ina
        sta     bar_sx+1
        lda     Y2
        sec
        sbc     Y1
        ina
        sta     bar_sy+1
        lda     DRAWINDEX
        sta     bar_c
        lda     #<bar_sprite
        ldx     #>bar_sprite
        jmp     draw_sprite

; ------------------------------------------------------------------------
; TEXTSTYLE: Set the style used when calling OUTTEXT. Text scaling in X and Y
; direction is passend in X/Y, the text direction is passed in A.
;
; Must set an error code: NO
;

TEXTSTYLE:
        stx     TEXTMAGX
        sty     TEXTMAGY
        sta     TEXTDIR
        rts

; ------------------------------------------------------------------------
; OUTTEXT: Output text at X/Y = ptr1/ptr2 using the current color and the
; current text style. The text to output is given as a zero terminated
; string with address in ptr3.
;
; Must set an error code: NO
;

OUTTEXT:
        lda     TEXTMAGX        ; Scale sprite
        sta     text_sx+1
        lda     TEXTMAGY
        sta     text_sy+1

        stz     text_sprite     ; Set normal sprite
        lda     BGINDEX
        bne     @L1
        lda     #4
        sta     text_sprite     ; Set opaque sprite
@L1:
        lda     DRAWINDEX       ; Set color
        asl
        asl
        asl
        asl
        ora     BGINDEX
        sta     text_c

        lda     X1              ; Set start position
        sta     text_x
        lda     X1+1
        sta     text_x+1
        lda     Y1
        sta     text_y
        lda     Y1+1
        sta     text_y+1

        ldy     #<-1            ; Calculate string length
@L2:
        iny
        lda     (STRPTR),y
        bne     @L2
        cpy     #20
        bmi     @L3
        ldy     #20
@L3:
        sty     STRLEN
        bne     @L4
        rts                     ; Zero length string
@L4:
        iny                     ; Prepare text_bitmap
        iny
        sty     STROFF

        ldy     #8-1            ; 8 pixel lines per character
        ldx     #0
        clc
@L5:
        lda     STROFF
        sta     text_bitmap,x
        txa
        adc     STROFF
        tax
        lda     #$ff
        sta     text_bitmap-1,x
        dey
        bpl     @L5
        stz     text_bitmap,x

        stz     tmp2
        iny
@L6:
        lda     (STRPTR),y
        sty     tmp1

        sec                     ; (ch-' ') * 8
        sbc     #32
        stz     FONTOFF
        stz     FONTOFF+1
        asl
        asl
        rol     FONTOFF+1
        asl
        rol     FONTOFF+1
        clc                     ; Choose font
        adc     #<font
        sta     FONTOFF
        lda     FONTOFF+1
        adc     #>font
        sta     FONTOFF+1

; and now copy the 8 bytes of that char

        ldx     tmp2
        inx
        stx     tmp2

; draw char from top to bottom, reading char-data from offset 8-1 to offset 0
        ldy     #8-1
@L7:
        lda     (FONTOFF),y         ; *chptr
        sta     text_bitmap,x    ;textbuf[y*(1+len+1)+1+x]

        txa
        adc     STROFF
        tax

        dey
        bpl     @L7

        ; goto next char
        ldy     tmp1
        iny
        dec     STRLEN
        bne     @L6

        lda     #<text_sprite
        ldx     #>text_sprite
        jmp     draw_sprite

.data
text_coll:
        .byte   0
text_sprite:
        .byte   $00,$90,$20
        .addr   0, text_bitmap
text_x:
        .word   0
text_y:
        .word   0
text_sx:
        .word   $100
text_sy:
        .word   $100
text_c:
        .byte   0

.rodata
; The Font
; 96 characters from ASCII 32 to 127
; 8 pixels wide, 8 pixels high
; bit value 0 = foreground, bit value 1 = background / transparent
font:
; VERSAIL
        .byte $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF  ;32
        .byte $FF, $E7, $FF, $FF, $E7, $E7, $E7, $E7  ;33
        .byte $FF, $FF, $FF, $FF, $FF, $99, $99, $99  ;34
        .byte $FF, $99, $99, $00, $99, $00, $99, $99  ;35
        .byte $FF, $E7, $83, $F9, $C3, $9F, $C1, $E7  ;36
        .byte $FF, $B9, $99, $CF, $E7, $F3, $99, $9D  ;37
        .byte $FF, $C0, $99, $98, $C7, $C3, $99, $C3  ;38
        .byte $FF, $FF, $FF, $FF, $FF, $E7, $F3, $F9  ;39
        .byte $FF, $F3, $E7, $CF, $CF, $CF, $E7, $F3  ;40
        .byte $FF, $CF, $E7, $F3, $F3, $F3, $E7, $CF  ;41
        .byte $FF, $FF, $99, $C3, $00, $C3, $99, $FF  ;42
        .byte $FF, $FF, $E7, $E7, $81, $E7, $E7, $FF  ;43
        .byte $CF, $E7, $E7, $FF, $FF, $FF, $FF, $FF  ;44
        .byte $FF, $FF, $FF, $FF, $81, $FF, $FF, $FF  ;45
        .byte $FF, $E7, $E7, $FF, $FF, $FF, $FF, $FF  ;46
        .byte $FF, $9F, $CF, $E7, $F3, $F9, $FC, $FF  ;47
        .byte $FF, $C3, $99, $99, $89, $91, $99, $C3  ;48
        .byte $FF, $81, $E7, $E7, $E7, $C7, $E7, $E7  ;49
        .byte $FF, $81, $9F, $CF, $F3, $F9, $99, $C3  ;50
        .byte $FF, $C3, $99, $F9, $E3, $F9, $99, $C3  ;51
        .byte $FF, $F9, $F9, $80, $99, $E1, $F1, $F9  ;52
        .byte $FF, $C3, $99, $F9, $F9, $83, $9F, $81  ;53
        .byte $FF, $C3, $99, $99, $83, $9F, $99, $C3  ;54
        .byte $FF, $E7, $E7, $E7, $E7, $F3, $99, $81  ;55
        .byte $FF, $C3, $99, $99, $C3, $99, $99, $C3  ;56
        .byte $FF, $C3, $99, $F9, $C1, $99, $99, $C3  ;57
        .byte $FF, $FF, $E7, $FF, $FF, $E7, $FF, $FF  ;58
        .byte $CF, $E7, $E7, $FF, $FF, $E7, $FF, $FF  ;59
        .byte $FF, $F1, $E7, $CF, $9F, $CF, $E7, $F1  ;60
        .byte $FF, $FF, $FF, $81, $FF, $81, $FF, $FF  ;61
        .byte $FF, $8F, $E7, $F3, $F9, $F3, $E7, $8F  ;62
        .byte $FF, $E7, $FF, $E7, $F3, $F9, $99, $C3  ;63


        .byte $FF, $C3, $9D, $9F, $91, $91, $99, $C3  ;0
        .byte $FF, $99, $99, $99, $81, $99, $C3, $E7  ;1
        .byte $FF, $83, $99, $99, $83, $99, $99, $83  ;2
        .byte $FF, $C3, $99, $9F, $9F, $9F, $99, $C3  ;3
        .byte $FF, $87, $93, $99, $99, $99, $93, $87  ;4
        .byte $FF, $81, $9F, $9F, $87, $9F, $9F, $81  ;5
        .byte $FF, $9F, $9F, $9F, $87, $9F, $9F, $81  ;6
        .byte $FF, $C3, $99, $99, $91, $9F, $99, $C3  ;7
        .byte $FF, $99, $99, $99, $81, $99, $99, $99  ;8
        .byte $FF, $C3, $E7, $E7, $E7, $E7, $E7, $C3  ;9
        .byte $FF, $C7, $93, $F3, $F3, $F3, $F3, $E1  ;10
        .byte $FF, $99, $93, $87, $8F, $87, $93, $99  ;11
        .byte $FF, $81, $9F, $9F, $9F, $9F, $9F, $9F  ;12
        .byte $FF, $9C, $9C, $9C, $94, $80, $88, $9C  ;13
        .byte $FF, $99, $99, $91, $81, $81, $89, $99  ;14
        .byte $FF, $C3, $99, $99, $99, $99, $99, $C3  ;15
        .byte $FF, $9F, $9F, $9F, $83, $99, $99, $83  ;16
        .byte $FF, $F1, $C3, $99, $99, $99, $99, $C3  ;17
        .byte $FF, $99, $93, $87, $83, $99, $99, $83  ;18
        .byte $FF, $C3, $99, $F9, $C3, $9F, $99, $C3  ;19
        .byte $FF, $E7, $E7, $E7, $E7, $E7, $E7, $81  ;20
        .byte $FF, $C3, $99, $99, $99, $99, $99, $99  ;21
        .byte $FF, $E7, $C3, $99, $99, $99, $99, $99  ;22
        .byte $FF, $9C, $88, $80, $94, $9C, $9C, $9C  ;23
        .byte $FF, $99, $99, $C3, $E7, $C3, $99, $99  ;24
        .byte $FF, $E7, $E7, $E7, $C3, $99, $99, $99  ;25
        .byte $FF, $81, $9F, $CF, $E7, $F3, $F9, $81  ;26
        .byte $FF, $C3, $CF, $CF, $CF, $CF, $CF, $C3  ;27
        .byte $FF, $03, $9D, $CF, $83, $CF, $ED, $F3  ;28
        .byte $FF, $C3, $F3, $F3, $F3, $F3, $F3, $C3  ;29
        .byte $E7, $E7, $E7, $E7, $81, $C3, $E7, $FF  ;30
        .byte $FF, $EF, $CF, $80, $80, $CF, $EF, $FF  ;31


; gemena
        .byte $FF, $C3, $9D, $9F, $91, $91, $99, $C3  ;224
        .byte $FF, $C1, $99, $C1, $F9, $C3, $FF, $FF  ;225
        .byte $FF, $83, $99, $99, $83, $9F, $9F, $FF  ;226
        .byte $FF, $C3, $9F, $9F, $9F, $C3, $FF, $FF  ;227
        .byte $FF, $C1, $99, $99, $C1, $F9, $F9, $FF  ;228
        .byte $FF, $C3, $9F, $81, $99, $C3, $FF, $FF  ;229
        .byte $FF, $E7, $E7, $E7, $C1, $E7, $F1, $FF  ;230
        .byte $83, $F9, $C1, $99, $99, $C1, $FF, $FF  ;231
        .byte $FF, $99, $99, $99, $83, $9F, $9F, $FF  ;232
        .byte $FF, $C3, $E7, $E7, $C7, $FF, $E7, $FF  ;233
        .byte $C3, $F9, $F9, $F9, $F9, $FF, $F9, $FF  ;234
        .byte $FF, $99, $93, $87, $93, $9F, $9F, $FF  ;235
        .byte $FF, $C3, $E7, $E7, $E7, $E7, $C7, $FF  ;236
        .byte $FF, $9C, $94, $80, $80, $99, $FF, $FF  ;237
        .byte $FF, $99, $99, $99, $99, $83, $FF, $FF  ;238
        .byte $FF, $C3, $99, $99, $99, $C3, $FF, $FF  ;239
        .byte $9F, $9F, $83, $99, $99, $83, $FF, $FF  ;240
        .byte $F9, $F9, $C1, $99, $99, $C1, $FF, $FF  ;241
        .byte $FF, $9F, $9F, $9F, $99, $83, $FF, $FF  ;242
        .byte $FF, $83, $F9, $C3, $9F, $C1, $FF, $FF  ;243
        .byte $FF, $F1, $E7, $E7, $E7, $81, $E7, $FF  ;244
        .byte $FF, $C1, $99, $99, $99, $99, $FF, $FF  ;245
        .byte $FF, $E7, $C3, $99, $99, $99, $FF, $FF  ;246
        .byte $FF, $C9, $C1, $80, $94, $9C, $FF, $FF  ;247
        .byte $FF, $99, $C3, $E7, $C3, $99, $FF, $FF  ;248
        .byte $87, $F3, $C1, $99, $99, $99, $FF, $FF  ;249
        .byte $FF, $81, $CF, $E7, $F3, $81, $FF, $FF  ;250
        .byte $FF, $C3, $CF, $CF, $CF, $CF, $CF, $C3  ;251
        .byte $FF, $03, $9D, $CF, $83, $CF, $ED, $F3  ;252
        .byte $FF, $C3, $F3, $F3, $F3, $F3, $F3, $C3  ;253
        .byte $E7, $E7, $E7, $E7, $81, $C3, $E7, $FF  ;254
        .byte $FF, $EF, $CF, $80, $80, $CF, $EF, $FF  ;255
