+;
+; Groepaz/Hitmen, 12.10.2015
+;
+; character set for use with the soft80 implementations
+;
-.byte $0f,$03,$0f,$00,$0f,$07,$05,$0e
-.byte $0f,$05,$0e,$0b,$0f,$0b,$0f,$0f
-.byte $0f,$0b,$0f,$0b,$07,$07,$0e,$00
-.byte $00,$0f,$0e,$0f,$0c,$0b,$03,$03
-.byte $0f,$0b,$05,$05,$0b,$05,$0b,$0b
-.byte $0d,$07,$0f,$0f,$0f,$0f,$0f,$0d
-.byte $0b,$0b,$0b,$0b,$05,$01,$0b,$01
-.byte $0b,$0b,$0f,$0f,$0d,$0f,$07,$0b
-.byte $0b,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$09,$07,$03,$0b,$0f
-.byte $0f,$0b,$03,$0b,$03,$01,$01,$0b
-.byte $05,$01,$09,$05,$07,$05,$05,$0b
-.byte $03,$0b,$03,$0b,$01,$05,$05,$05
-.byte $05,$05,$01,$0b,$07,$0b,$0f,$0a
+; the format of the data follows the following layout:
+;
+; - to avoid unnecessary petscii->screencode conversions, the order of the
+; individual characters is different to the C64 ROM charset:
+; - $00 - $1f screencodes $60 - $7f (petscii codes $a0 - $bf)
+; - $20 - $3f screencodes $20 - $3f (petscii codes $20 - $3f)
+; - $40 - $5f screencodes $00 - $1f (petscii codes $40 - $5f)
+; - $60 - $7f screencodes $40 - $5f (petscii codes $60 - $7f)
+; - only 128 characters are defined here, the soft80 implementation will invert
+; the graphics data for inverted display on the fly.
+; - since the charset is 4 by 8 pixels, only the lower 4bit of each byte is
+; used. the upper bits have to be 0.
+; - finally the lower 4bits are "inverted", ie a space character is represented
+; as $0f, $0f, $0f, $0f, $0f, $0f, $0f, $0f
+;
+; the graphics data is arranged differently to normal C64 charsets for speed,
+; first comes the first row of all characters, then the second row in the next
+; block, etc. like this:
+;
+; +000 ....xxxx ......xx ....xxxx ........
+; +080 ....xxxx ......xx ....xxxx ....xxxx
+; +100 ....xxxx ......xx ....xxxx ....xxxx
+; +180 ....x..x ......xx ....xxxx ....xxxx
+; +200 ....x..x ......xx ........ ....xxxx
+; +280 ....xxxx ......xx ........ ....xxxx
+; +300 ....xxxx ......xx ........ ....xxxx
+; +380 ....xxxx ......xx ........ ....xxxx
+; [...]
+; +040 ....x.xx ....xxxx ....xxxx ....xxxx
+; +0c0 .....x.x ....xxxx .....xxx ....xxxx
+; +140 .......x ....x.xx .....xxx ....x..x
+; +1c0 .......x ....xx.x ......xx .....xxx
+; +240 .....xxx ....x..x .....x.x .....xxx
+; +2c0 .....x.x .....x.x .....x.x .....xxx
+; +340 ....x.xx ....x..x ......xx ....x..x
+; +3c0 ....xxxx ....xxxx ....xxxx ....xxxx
-.byte $0f,$03,$0f,$0f,$0f,$07,$05,$0e
-.byte $0f,$0a,$0e,$0b,$0f,$0b,$0f,$0f
-.byte $0f,$0b,$0f,$0b,$07,$07,$0e,$00
-.byte $00,$0f,$0e,$0f,$0c,$0b,$03,$03
-.byte $0f,$0b,$05,$05,$09,$05,$05,$0b
-.byte $0b,$0b,$05,$0b,$0f,$0f,$0f,$0d
-.byte $05,$0b,$05,$05,$05,$07,$05,$05
-.byte $05,$05,$0f,$0f,$0b,$0f,$0b,$05
-.byte $05,$0f,$07,$0f,$0d,$0f,$09,$0f
-.byte $07,$0b,$0d,$07,$03,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0b,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0b,$07,$0b,$0b,$0b
-.byte $0f,$0b,$05,$05,$05,$07,$07,$05
-.byte $05,$0b,$0d,$05,$07,$01,$01,$05
-.byte $05,$05,$05,$05,$0b,$05,$05,$05
-.byte $05,$05,$0d,$0b,$07,$0b,$0f,$0a
+ .export soft80_charset
-.byte $0f,$03,$0f,$0f,$0f,$07,$0a,$0e
-.byte $0f,$05,$0e,$0b,$0f,$0b,$0f,$0f
-.byte $0f,$0b,$0f,$0b,$07,$07,$0e,$0f
-.byte $00,$0f,$0d,$0f,$0c,$0b,$03,$03
-.byte $0f,$0b,$05,$00,$07,$0d,$0b,$07
-.byte $0b,$0b,$0b,$0b,$0f,$0f,$0f,$0b
-.byte $01,$03,$0d,$0d,$05,$03,$07,$0d
-.byte $05,$05,$0b,$0b,$0b,$08,$0b,$0d
-.byte $01,$0b,$07,$09,$0d,$0b,$0b,$09
-.byte $07,$0f,$0f,$07,$0b,$05,$03,$0b
-.byte $03,$09,$03,$09,$01,$05,$05,$05
-.byte $05,$05,$01,$0b,$0b,$0b,$05,$0b
-.byte $0f,$05,$05,$07,$05,$07,$07,$07
-.byte $05,$0b,$0d,$03,$07,$01,$01,$05
-.byte $05,$05,$05,$07,$0b,$05,$05,$05
-.byte $0b,$05,$0b,$0b,$0b,$0b,$0a,$05
+ .segment "ONCE"
+soft80_charset:
+ .byte $0f,$03,$0f,$00,$0f,$07,$05,$0e
+ .byte $0f,$05,$0e,$0b,$0f,$0b,$0f,$0f
+ .byte $0f,$0b,$0f,$0b,$07,$07,$0e,$00
+ .byte $00,$0f,$0e,$0f,$0c,$0b,$03,$03
+ .byte $0f,$0b,$05,$05,$0b,$05,$0b,$0b
+ .byte $0d,$07,$0f,$0f,$0f,$0f,$0f,$0d
+ .byte $0b,$0b,$0b,$0b,$05,$01,$0b,$01
+ .byte $0b,$0b,$0f,$0f,$0d,$0f,$07,$0b
+ .byte $0b,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$09,$07,$03,$0b,$0f
+ .byte $0f,$0b,$03,$0b,$03,$01,$01,$0b
+ .byte $05,$01,$09,$05,$07,$05,$05,$0b
+ .byte $03,$0b,$03,$0b,$01,$05,$05,$05
+ .byte $05,$05,$01,$0b,$07,$0b,$0f,$0a
-.byte $09,$03,$0f,$0f,$0f,$07,$0a,$0e
-.byte $0f,$0a,$0e,$08,$0f,$08,$03,$0f
-.byte $08,$00,$00,$03,$07,$07,$0e,$0f
-.byte $0f,$0f,$05,$0f,$0c,$03,$03,$03
-.byte $0f,$0b,$0f,$05,$0b,$0b,$0b,$0f
-.byte $0b,$0b,$01,$01,$0f,$01,$0f,$0b
-.byte $05,$0b,$0b,$0b,$01,$0d,$03,$0b
-.byte $0b,$09,$0f,$0f,$07,$0f,$0d,$0b
-.byte $01,$0d,$03,$07,$09,$05,$01,$05
-.byte $03,$03,$0d,$05,$0b,$01,$05,$05
-.byte $05,$05,$05,$07,$0b,$05,$05,$05
-.byte $05,$05,$0d,$0b,$0b,$0b,$05,$00
-.byte $00,$01,$03,$07,$05,$03,$03,$01
-.byte $01,$0b,$0d,$03,$07,$05,$01,$05
-.byte $03,$05,$03,$0b,$0b,$05,$05,$01
-.byte $0b,$0b,$0b,$00,$0b,$0b,$05,$05
+ .byte $0f,$03,$0f,$0f,$0f,$07,$05,$0e
+ .byte $0f,$0a,$0e,$0b,$0f,$0b,$0f,$0f
+ .byte $0f,$0b,$0f,$0b,$07,$07,$0e,$00
+ .byte $00,$0f,$0e,$0f,$0c,$0b,$03,$03
+ .byte $0f,$0b,$05,$05,$09,$05,$05,$0b
+ .byte $0b,$0b,$05,$0b,$0f,$0f,$0f,$0d
+ .byte $05,$0b,$05,$05,$05,$07,$05,$05
+ .byte $05,$05,$0f,$0f,$0b,$0f,$0b,$05
+ .byte $05,$0f,$07,$0f,$0d,$0f,$09,$0f
+ .byte $07,$0b,$0d,$07,$03,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0b,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0b,$07,$0b,$0b,$0b
+ .byte $0f,$0b,$05,$05,$05,$07,$07,$05
+ .byte $05,$0b,$0d,$05,$07,$01,$01,$05
+ .byte $05,$05,$05,$05,$0b,$05,$05,$05
+ .byte $05,$05,$0d,$0b,$07,$0b,$0f,$0a
-.byte $09,$03,$00,$0f,$0f,$07,$05,$0e
-.byte $05,$05,$0e,$08,$0c,$08,$03,$0f
-.byte $08,$00,$00,$03,$07,$07,$0e,$0f
-.byte $0f,$0f,$03,$03,$0f,$03,$0f,$0c
-.byte $0f,$0f,$0f,$00,$0d,$07,$04,$0f
-.byte $0b,$0b,$0b,$0b,$0f,$0f,$0f,$0b
-.byte $05,$0b,$07,$0d,$0d,$0d,$05,$0b
-.byte $05,$0d,$0f,$0f,$0b,$08,$0b,$0b
-.byte $07,$09,$05,$07,$05,$01,$0b,$05
-.byte $05,$0b,$0d,$03,$0b,$01,$05,$05
-.byte $05,$05,$07,$0b,$0b,$05,$05,$01
-.byte $0b,$05,$0b,$0b,$0b,$0b,$0f,$00
-.byte $00,$05,$05,$07,$05,$07,$07,$05
-.byte $05,$0b,$0d,$03,$07,$05,$01,$05
-.byte $07,$05,$03,$0d,$0b,$05,$05,$01
-.byte $0b,$0b,$0b,$00,$07,$0b,$05,$0a
+ .byte $0f,$03,$0f,$0f,$0f,$07,$0a,$0e
+ .byte $0f,$05,$0e,$0b,$0f,$0b,$0f,$0f
+ .byte $0f,$0b,$0f,$0b,$07,$07,$0e,$0f
+ .byte $00,$0f,$0d,$0f,$0c,$0b,$03,$03
+ .byte $0f,$0b,$05,$00,$07,$0d,$0b,$07
+ .byte $0b,$0b,$0b,$0b,$0f,$0f,$0f,$0b
+ .byte $01,$03,$0d,$0d,$05,$03,$07,$0d
+ .byte $05,$05,$0b,$0b,$0b,$08,$0b,$0d
+ .byte $01,$0b,$07,$09,$0d,$0b,$0b,$09
+ .byte $07,$0f,$0f,$07,$0b,$05,$03,$0b
+ .byte $03,$09,$03,$09,$01,$05,$05,$05
+ .byte $05,$05,$01,$0b,$0b,$0b,$05,$0b
+ .byte $0f,$05,$05,$07,$05,$07,$07,$07
+ .byte $05,$0b,$0d,$03,$07,$01,$01,$05
+ .byte $05,$05,$05,$07,$0b,$05,$05,$05
+ .byte $0b,$05,$0b,$0b,$0b,$0b,$0a,$05
-.byte $0f,$03,$00,$0f,$0f,$07,$05,$0e
-.byte $05,$0a,$0e,$0b,$0c,$0f,$0b,$0f
-.byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
-.byte $0f,$00,$03,$03,$0f,$0f,$0f,$0c
-.byte $0f,$0f,$0f,$05,$03,$05,$05,$0f
-.byte $0b,$0b,$05,$0b,$0b,$0f,$0b,$07
-.byte $05,$0b,$07,$05,$0d,$05,$05,$0b
-.byte $05,$05,$0b,$0b,$0b,$0f,$0b,$0f
-.byte $05,$05,$05,$07,$05,$07,$0b,$09
-.byte $05,$0b,$0d,$05,$0b,$05,$05,$05
-.byte $03,$09,$07,$0d,$0b,$05,$0b,$01
-.byte $05,$09,$07,$0b,$0d,$0b,$0f,$0b
-.byte $0f,$05,$05,$05,$05,$07,$07,$05
-.byte $05,$0b,$05,$05,$07,$05,$05,$05
-.byte $07,$0b,$05,$05,$0b,$05,$0b,$05
-.byte $05,$0b,$07,$0b,$07,$0b,$05,$0a
+ .byte $09,$03,$0f,$0f,$0f,$07,$0a,$0e
+ .byte $0f,$0a,$0e,$08,$0f,$08,$03,$0f
+ .byte $08,$00,$00,$03,$07,$07,$0e,$0f
+ .byte $0f,$0f,$05,$0f,$0c,$03,$03,$03
+ .byte $0f,$0b,$0f,$05,$0b,$0b,$0b,$0f
+ .byte $0b,$0b,$01,$01,$0f,$01,$0f,$0b
+ .byte $05,$0b,$0b,$0b,$01,$0d,$03,$0b
+ .byte $0b,$09,$0f,$0f,$07,$0f,$0d,$0b
+ .byte $01,$0d,$03,$07,$09,$05,$01,$05
+ .byte $03,$03,$0d,$05,$0b,$01,$05,$05
+ .byte $05,$05,$05,$07,$0b,$05,$05,$05
+ .byte $05,$05,$0d,$0b,$0b,$0b,$05,$00
+ .byte $00,$01,$03,$07,$05,$03,$03,$01
+ .byte $01,$0b,$0d,$03,$07,$05,$01,$05
+ .byte $03,$05,$03,$0b,$0b,$05,$05,$01
+ .byte $0b,$0b,$0b,$00,$0b,$0b,$05,$05
-.byte $0f,$03,$00,$0f,$0f,$07,$0a,$0e
-.byte $0a,$05,$0e,$0b,$0c,$0f,$0b,$00
-.byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
-.byte $0f,$00,$07,$03,$0f,$0f,$0f,$0c
-.byte $0f,$0b,$0f,$05,$0b,$05,$08,$0f
-.byte $0d,$07,$0f,$0f,$0b,$0f,$0b,$07
-.byte $0b,$01,$01,$0b,$0d,$0b,$0b,$0b
-.byte $0b,$0b,$0f,$0b,$0d,$0f,$07,$0b
-.byte $0b,$09,$03,$09,$09,$09,$0b,$0d
-.byte $05,$01,$0d,$05,$01,$05,$05,$0b
-.byte $07,$0d,$07,$03,$0d,$09,$0b,$05
-.byte $05,$0d,$01,$09,$0d,$03,$0f,$0b
-.byte $0f,$05,$03,$0b,$03,$01,$07,$0b
-.byte $05,$01,$0b,$05,$01,$05,$05,$0b
-.byte $07,$0d,$05,$0b,$0b,$0b,$0b,$05
-.byte $05,$0b,$01,$0b,$0b,$0b,$05,$05
+ .byte $09,$03,$00,$0f,$0f,$07,$05,$0e
+ .byte $05,$05,$0e,$08,$0c,$08,$03,$0f
+ .byte $08,$00,$00,$03,$07,$07,$0e,$0f
+ .byte $0f,$0f,$03,$03,$0f,$03,$0f,$0c
+ .byte $0f,$0f,$0f,$00,$0d,$07,$04,$0f
+ .byte $0b,$0b,$0b,$0b,$0f,$0f,$0f,$0b
+ .byte $05,$0b,$07,$0d,$0d,$0d,$05,$0b
+ .byte $05,$0d,$0f,$0f,$0b,$08,$0b,$0b
+ .byte $07,$09,$05,$07,$05,$01,$0b,$05
+ .byte $05,$0b,$0d,$03,$0b,$01,$05,$05
+ .byte $05,$05,$07,$0b,$0b,$05,$05,$01
+ .byte $0b,$05,$0b,$0b,$0b,$0b,$0f,$00
+ .byte $00,$05,$05,$07,$05,$07,$07,$05
+ .byte $05,$0b,$0d,$03,$07,$05,$01,$05
+ .byte $07,$05,$03,$0d,$0b,$05,$05,$01
+ .byte $0b,$0b,$0b,$00,$07,$0b,$05,$0a
-.byte $0f,$03,$00,$0f,$00,$07,$0a,$0e
-.byte $0a,$0a,$0e,$0b,$0c,$0f,$0b,$00
-.byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
-.byte $0f,$00,$0f,$03,$0f,$0f,$0f,$0c
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$07,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$07,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$03
-.byte $0f,$0f,$03,$0f,$0f,$0f,$0f,$0f
-.byte $07,$0d,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$03,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
-.byte $0f,$0f,$0f,$0b,$0b,$0b,$0f,$05
+ .byte $0f,$03,$00,$0f,$0f,$07,$05,$0e
+ .byte $05,$0a,$0e,$0b,$0c,$0f,$0b,$0f
+ .byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
+ .byte $0f,$00,$03,$03,$0f,$0f,$0f,$0c
+ .byte $0f,$0f,$0f,$05,$03,$05,$05,$0f
+ .byte $0b,$0b,$05,$0b,$0b,$0f,$0b,$07
+ .byte $05,$0b,$07,$05,$0d,$05,$05,$0b
+ .byte $05,$05,$0b,$0b,$0b,$0f,$0b,$0f
+ .byte $05,$05,$05,$07,$05,$07,$0b,$09
+ .byte $05,$0b,$0d,$05,$0b,$05,$05,$05
+ .byte $03,$09,$07,$0d,$0b,$05,$0b,$01
+ .byte $05,$09,$07,$0b,$0d,$0b,$0f,$0b
+ .byte $0f,$05,$05,$05,$05,$07,$07,$05
+ .byte $05,$0b,$05,$05,$07,$05,$05,$05
+ .byte $07,$0b,$05,$05,$0b,$05,$0b,$05
+ .byte $05,$0b,$07,$0b,$07,$0b,$05,$0a
+ .byte $0f,$03,$00,$0f,$0f,$07,$0a,$0e
+ .byte $0a,$05,$0e,$0b,$0c,$0f,$0b,$00
+ .byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
+ .byte $0f,$00,$07,$03,$0f,$0f,$0f,$0c
+ .byte $0f,$0b,$0f,$05,$0b,$05,$08,$0f
+ .byte $0d,$07,$0f,$0f,$0b,$0f,$0b,$07
+ .byte $0b,$01,$01,$0b,$0d,$0b,$0b,$0b
+ .byte $0b,$0b,$0f,$0b,$0d,$0f,$07,$0b
+ .byte $0b,$09,$03,$09,$09,$09,$0b,$0d
+ .byte $05,$01,$0d,$05,$01,$05,$05,$0b
+ .byte $07,$0d,$07,$03,$0d,$09,$0b,$05
+ .byte $05,$0d,$01,$09,$0d,$03,$0f,$0b
+ .byte $0f,$05,$03,$0b,$03,$01,$07,$0b
+ .byte $05,$01,$0b,$05,$01,$05,$05,$0b
+ .byte $07,$0d,$05,$0b,$0b,$0b,$0b,$05
+ .byte $05,$0b,$01,$0b,$0b,$0b,$05,$05
+
+ .byte $0f,$03,$00,$0f,$00,$07,$0a,$0e
+ .byte $0a,$0a,$0e,$0b,$0c,$0f,$0b,$00
+ .byte $0b,$0f,$0b,$0b,$07,$07,$0e,$0f
+ .byte $0f,$00,$0f,$03,$0f,$0f,$0f,$0c
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$07,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$07,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$03
+ .byte $0f,$0f,$03,$0f,$0f,$0f,$0f,$0f
+ .byte $07,$0d,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$03,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0f,$0f,$0f,$0f,$0f
+ .byte $0f,$0f,$0f,$0b,$0b,$0b,$0f,$05
projects / cc65 / blobdiff