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https://github.com/a2-4am/4cade.git
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59 lines
1.7 KiB
Plaintext
59 lines
1.7 KiB
Plaintext
;license:MIT
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;(c) 2018-9 by 4am
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;
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;------------------------------------------------------------------------------
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; YE OLDE GRAND UNIFIED MEMORY MAP
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;
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; LC RAM BANK 1
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; D000.. - data structures (e.g. gGamesListStore)
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; ..FFFB - main program code
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; FFFC..FFFF - reset and other vectors
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;
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; LC RAM BANK 2
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; D000..D3FF - ProRWTS data
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; D400..D5FF - ProRWTS code
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; D600..D9FF - HGR font data
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; DA00..DEFF - unused
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; DF00..DFFF - backup of stack during self-running demos
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;------------------------------------------------------------------------------
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; soft switches
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STOREOFF = $C000 ; write to use following 4 flags:
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READMAINMEM = $C002 ; write to R main mem
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READAUXMEM = $C003 ; write to R aux mem
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WRITEMAINMEM = $C004 ; write to W main mem
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WRITEAUXMEM = $C005 ; write to W aux mem
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;
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SLOT3STATUS = $C017 ; read high bit only
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; ROM
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MACHINEID = $FBB3
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; zero page
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PARAM = $00 ; used by PARAMS_ON_STACK macro, so basically everywhere
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PTR = $02
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SRC = $04
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DEST = $06
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SAVE = $08
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HTAB = $24
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VTAB = $25
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MachineStatus =$F0 ; bit 7 = 1 if machine has joystick
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; bit 6 = 1 if machine has 128K
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; bit 5 = 1 if machine has a VidHD card
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; bit 4 = 1 if machine is a IIgs
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; $FE ; used by ParseGamesList
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; $FF ; used by ParseGamesList
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; main memory
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gPathname = $1F00 ; used by SetPath/AddToPath
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gKeyLen = $1F00 ; used by ParseGamesList
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gKey = $1F01
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gValLen = $1F80
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gVal = $1F81
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; actual constants
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SUPPORTS_SHR = %00110000 ; AND mask for MachineStatus
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kAttractMode = %10000000
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kSearchMode = %00000000
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