124 lines
1.8 KiB
ArmAsm
124 lines
1.8 KiB
ArmAsm
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; memory.s
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; Memory mapping information
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;
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; Created by Quinn Dunki on 8/15/14.
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; Copyright (c) 2014 One Girl, One Laptop Productions. All rights reserved.
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;
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; Reserved locations
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INVERSE = $32
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BASL = $28
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BASH = $29
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; Zero page locations we use (unused by Monitor, Applesoft, or ProDOS)
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PARAM0 = $06
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PARAM1 = $07
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PARAM2 = $08
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PARAM3 = $09
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SCRATCH0 = $19
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SCRATCH1 = $1A
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; Constants
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CHAR_NORMAL = $ff
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CHAR_INVERSE = $3f
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CHAR_FLASH = $7f
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; ROM entry points
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COUT = $fded
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BASCALC = $fbc1
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; System state
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WG_CURSORX: ; In screenspace
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.byte 0
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WG_CURSORY:
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.byte 0
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WG_LOCALCURSORX: ; In current viewspace
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.byte 0
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WG_LOCALCURSORY:
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.byte 0
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WG_ACTIVEVIEW:
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.byte 0
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WG_VIEWRECORDS:
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; X, Y, Screen Width, Screen Height, Style, X Offset, Y Offset, View Width, View Height
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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.byte 0,0,0,0,0,0,0,0
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; Video memory lookup table
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TEXTLINES_H:
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.byte $04 ;0
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.byte $04 ;1
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.byte $05 ;2
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.byte $05 ;3
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.byte $06 ;4
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.byte $06 ;5
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.byte $07 ;6
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.byte $07 ;7
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.byte $04 ;8
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.byte $04 ;9
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.byte $05 ;10
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.byte $05 ;11
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.byte $06 ;12
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.byte $06 ;13
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.byte $07 ;14
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.byte $07 ;15
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.byte $04 ;16
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.byte $04 ;17
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.byte $05 ;18
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.byte $05 ;19
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.byte $06 ;20
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.byte $06 ;21
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.byte $07 ;22
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.byte $07 ;23
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TEXTLINES_L:
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.byte $00 ;0
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.byte $80 ;1
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.byte $00 ;2
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.byte $80 ;3
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.byte $00 ;4
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.byte $80 ;5
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.byte $00 ;6
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.byte $80 ;7
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.byte $28 ;8
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.byte $a8 ;9
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.byte $28 ;10
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.byte $a8 ;11
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.byte $28 ;12
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.byte $a8 ;13
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.byte $28 ;14
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.byte $a8 ;15
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.byte $50 ;16
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.byte $d0 ;17
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.byte $50 ;18
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.byte $d0 ;19
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.byte $50 ;20
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.byte $d0 ;21
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.byte $50 ;22
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.byte $d0 ;23
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