; ; 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 ; 0:901F byte DMA write : 1=yes, 2=no ; 0:9020 8bytes pci data ; 0:9030 byte VRR start enabled 1, 2-no ; 0:9031 word IDEContrRegsBaseAddr ; 0x9040 - dword - entry point of APM BIOS ; 0x9044 - word - version (BCD) ; 0x9046 - word - flags ; 0:907F byte number of BIOS hard disks ; 0:9080 Nbytes BIOS hard disks ; 0:9100 word available physical memory map: number of blocks ; 0:9104 available physical memory map: blocks ; ; Runtime: ; ; 0x00000000 -> 0x7FFFFFFF application 2Gb ; 0x80000000 -> 0FFF physical page zero - do not write ; (used by int 13h in some configurations) ; ; 0x80001000 -> 2FFF 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 ; ; 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 byte slot state: 0=running, 1,2=suspended ; 3=zombie, 4=terminate, ; 5=waiting for event, 9 = not used ; 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 -> 68FF free ; 6900 -> 6EFF saved picture under mouse pointer ; ; 6F00 -> 6FFF free ; ; 7000 -> 7FFF used CD driver ; ; 8000 -> A3FF used FLOPPY driver ; ; A400 -> B0FF free ; B100 -> B307 IDT for int_0x00..int_0x40 ; B308 -> 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 ; 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 free ; 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. ; ; 0x80010000 -> 6CBFF kernel, 32-bit run-time code (up to 371 Kb) ; 0x8006CC00 -> 6DBFF stack at boot time (4Kb) ; ; 0x8006DC00 -> 6E5FF basic text font II ; 0x8006E600 -> 6Efff basic text font I ; 0x8006F000 -> 6FFFF main page directory ; 0x80070000 -> 7FFFF data of retrieved disks and partitions (Mario79) ; 0x80080000 -> 8FFFF additional app info, in 256 byte steps - 256 entries ; ; 00 11db name of app running ; 0x10 dword pointer to fpu save area ; 0x14 dword event count ; 0x18 dword user fpu exceptoins handler ; 0x1c dword user sse exceptions handler ; 20 dword PL0 stack base ; 24 dword user heap base ; 28 dword user heap top ; 2c dword window cursor handle ; 30 dword first event in list ; 34 dword last event in list ; 38 dword first kernel object in list ; 3c dword last kernel object in list ; 40 dword thread esp ; 44 dword io permission map page 0 ; 48 dword io permission map page 1 ; 4c dword debug state: 1= load debug registers ; 50 dword current directory ptr ; 54 dword wait timeout ; 58 dword thread TSS._esp0 (= pl0 stack base + size except for V86) ; 5C-7F unused ; ; 80 dword address of random shaped window area ; 84 byte shape area scale ; 88 dword free ; 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 free ; 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 ; ; 0x80090000 -> 9FFFF tmp ; 0x800A0000 -> AFFFF screen access area ; 0x800B0000 -> FFFFF bios rest in peace -area ; 0x80100000 -> 27FFFF diskette image ; 0x80280000 -> 281FFF ramdisk fat ; 0x80282000 -> 283FFF floppy fat ; ; 0x80284000 -> 28BFFF HDD DMA AREA ; 0x8028C000 -> 297FFF free (48 Kb) ; ; 0x80298000 -> 29ffff auxiliary table for background smoothing code ; ; 0x802A0000 -> 2B00ff wav device data ; 0x802C0000 -> 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 ; ; 0x802C4000 -> 2CFFFF free (48Kb) ; ; 0x802D0000 -> 2DFFFF reserved port area ; ; 0000 dword no of port areas reserved ; 0010 dword process id ; dword start port ; dword end port ; dword 0 ; ; 0x802E0000 -> 2EFFFF irq data area ; 0x802F0000 -> 2FFFFF low memory save ; ; 0x80300000 -> 31FFFF tcp memory 128 Kb ; 0x80320000 -> 327FFF tcp memory 32 Kb ; ; 0x80328000 -> 32FFFF !vrr driver 32 Kb ; 0x80330000 -> 377FFF skin data ; 0x80338000 -> 33AFFF 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 ; 0x8033C000 -> 47BFFF display info ; 0x8047CF80 -> 47CFFF TSS 128 bytes ; 0x8047D000 -> 47EFFF IO map for (8192*8)=65536 ports ; 0x8047F000 -> 48FFFF page map max 128 Kb ; ; 0x80800000 -> kernel heap ; 0x81FFFFFF heap min limit ; 0xFDBFFFFF heap max limit ; 0xFDC00000 -> 0xFDFFFFFF page tables 4Mb ; 0xFE000000 -> 0xFFFFFFFF LFB 32Mb ; 0xFE000000 -> 0xFE7FFFFF application available LFB 8Mb ; 0xFE800000 -> 0xFFFFFFFF kernel LFB part 24 Mb