; ; MEMORY MAP ; ; Boot: ; ; 0:9000 byte bits per pixel ; 0:9001 word scanline length ; 0:9008 word vesa video mode ; 0:900A word X res ; 0:900C word Y res ; 0:9010 byte mouse port - not used ; 0:9014 dword Vesa 1.2 pm bank switch ; 0:9018 dword Vesa 2.0 LFB address ; 0:901C byte 0 or 1 : enable MTRR graphics acceleration ; 0:901D byte not used anymore (0 or 1 : enable system log display) ; 0:901E byte 0 or 1 : enable direct lfb write, paging disabled ; 0:9020 8bytes pci data ; 0:9030 byte VRR start enabled 1, 2-no ; 0:9031 word IDEContrRegsBaseAddr ; ; ; Runtime: ; ; 0000 -> 1FFF window_data - 256 entries ; ; 0000 dword x start ; 0004 dword y start ; 0008 dword x size ; 000C dword y size ; 0010 dword color of work area ; 0014 dword color of grab bar ; 0018 dword color of frames ; 001C dword window flags, +30 = window drawn, +31 redraw flag ; ; 2000 -> 2FFF free ; ; 3000 -> 4FFF task list - 256 entries ; ; 00 dword process count ; 04 dword no of processes ; 10 dword base of running process at 0x3000+ ; ; 20 dword application event mask ; 24 dword PID - process identification number ; 2a word 0, state 1,2=suspended 3=zombie, 4=terminate ; 2e byte window number on screen ; 30 dword exact position in memory ; 34 dword counter sum ; 38 dword time stamp counter add ; 3c dword cpu usage in cpu timer tics ; ; ; 5000 -> 5FFF save_syscall_data - syscall trace ; 6000 -> 68FF free ; 6900 -> 6EFF saved picture under mouse pointer ; ; 6F00 -> 6FFF free ; ; 7000 -> 7FFF used CD driver ; ; 8000 -> A3FF used FLOPPY driver ; ; A400 -> A7FF used active process stack ; ; A800 -> B0FF free ; B100 -> B2FF IDT ; B300 -> BFFF free ; C000 -> C3FF window stack C000 no of windows - all in words ; C402 -> C7FF window position in stack ; D000 -> D1FF FDC controller ; D200 -> D3FF FDC controller for Fat12 ; D400 -> DFFF free ; E000 byte multitasking started ; E020 dword putpixel address ; E024 dword getpixel address ; E030 dword Vesa 1.2 pm bank switch address ; F200 dword mousepicture -pointer ; F204 dword mouse appearance counter ; F300 dword x & y temp for windowmove ; F400 byte no of keys in buffer ; F401 byte 'buffer' ; F402 -> F4FF reserved for keys ; F500 byte no of buttons in buffer ; F501 dword 'buffer' ; F502 -> F5FF reserved for buttons ; F600 dword tsc / second ; F604 byte mouse port: 1 ps2, 2 com1, 3 com2 ; FB00 -> FB0F mouse memory 00 chunk count - FB0A-B x - FB0C-D y ; FB10 -> FB17 mouse color mem ; FB21 x move ; FB22 y move ; FB28 high bits temp ; FB30 color temp ; FB40 byte buttons down ; FB44 byte 0 mouse down -> do not draw ; FB4A -> FB4D FB4A-B x-under - FB4C-D y-under ; FBF1 byte bits per pixel ; FC00 -> FCFE com1/ps2 buffer ; FCFF com1/ps2 buffer count starting from FC00 ; FE00 dword screen x size ; FE04 dword screen y size ; FE08 dword screen y multiplier ; FE0C dword screen mode ; FE10 dword entries in hd cache ; FE80 dword address of LFB in physical ; FE84 dword address of applications memory start in physical ; FE88 dword address of button list ; FE8C dword memory to use ; FF00 byte 1 = system shutdown request ; FF01 dword if >1 then activate process ; FFF0 byte 1 = redraw background request from app ; FFF1 byte 1 = diskette int occur ; FFF2 write and read bank in screen ; FFF4 byte 0 if first mouse draw & do not return picture under ; FFF5 byte 1 do not draw pointer ; FFFF byte do not change task for 1/100 sec. ; ; 10000 -> 3DBFF kernel, 32-bit run-time code (up to 183 Kb) ; 3DC00 -> 3EBFF stack at boot time (4Kb) ; 3EC00 -> 3F5FF basic text font II ; 3F600 -> 3FFFF basic text font I ; 40000 -> 4FFFF data of retrieved disks and partitions (Mario79) ; 50000 -> 5FFFF free (64 Kb) ; 60000 -> 7FFFF reserved to physical memory manager ; 80000 -> 8FFFF additional app info, in 256 byte steps - 256 entries ; ; 00 11db name of app running ; 10 108db floating point unit save area ; 7f byte 0= no fpu saved , 1= fpu saved to 0x10 -> restore ; 80 dword address of random shaped window area ; 84 byte shape area scale ; 88 dword used GDT of TSS ; 8C dword application memory size ; 90 dword window X position save ; 94 dword window Y position save ; 98 dword window X size save ; 9C dword window Y size save ; A0 dword IPC memory start ; A4 dword IPC memory size ; A8 dword event bits: mouse, stack,.. ; AC dword 0 or debugger slot ; B0 dword int40 handler in use ; 0 if not in use ; B4 byte keyboard mode: 0 = keymap, 1 = scancodes ; B8 dword physical address of directory table ; BC dword address of debug event memory ; C0 5 dd thread debug registers: DR0,DR1,DR2,DR3,DR7 ; ; 90000 -> 9FFFF tmp ; A0000 -> AFFFF screen access area ; B0000 -> FFFFF bios rest in peace -area ; 100000 -> 27FFFF diskette image ; 280000 -> 281FFF ramdisk fat ; 282000 -> 283FFF floppy fat ; ; 284000 -> 29FFFF free (112 Kb) ; ; 2A0000 -> 2B00ff wav device data ; 2C0000 -> 2C3fff button info ; ; 0000 word number of buttons ; first button entry at 0x10 ; +0000 word process number ; +0002 word button id number : bits 00-15 ; +0004 word x start ; +0006 word x size ; +0008 word y start ; +000A word y size ; +000C word button id number : bits 16-31 ; ; 2C4000 -> 2CFFFF free (48Kb) ; ; 2D0000 -> 2DFFFF reserved port area ; ; 0000 dword no of port areas reserved ; 0010 dword process id ; dword start port ; dword end port ; dword 0 ; ; 2E0000 -> 2EFFFF irq data area ; 2F0000 -> 2FFFFF low memory save ; ; 300000 -> 45FFFF background image, max 1,375 M ; ; 460000 -> 5FFFFF display info ; ; 600000 -> 6FFFFF hd cache ; ; 700000 -> 71ffff tcp memory (128 kb) ; 720000 -> 75ffff free (256 kb) ; ; 760000 -> 76ffff !vrr driver ; 770000 -> 777fff tcp memory ( 32 kb) ; ; 778000 -> 77ffff window skinning ( 32 kb) ; 780000 -> 7fffff reserved to physical memory manager ; ; 800000 -> BFFFFF mapped to LFB ; ; ; C00000 -> C01FFF draw_data - 256 entries ; ; 00 dword draw limit - x start ; 04 dword draw limit - y start ; 08 dword draw limit - x end ; 0C dword draw limit - y end ; ; C02000 -> C02fff free (4 Kb) ; ; C03000 -> D02fff sysint_stack_data ; - ring0 stacks for ring3 processes ; - used for interrupt handling ; - 256 entries * 4096 step ; ; D03000 -> D1ffff free (116 Kb) ; ; D20000 -> F28000 TSS and IO map for (8192*8)=65536 ports ; (128+8192)*256 = 557956 = 0x88000 ; ; 1000000 -> 3FFFFFF for applications ;