; ; MEMORY MAP ; ; Boot: ; ; 0:7C00->7CFF boot_code ; ; 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 -> 73FF << FLOPPY buffer (9k) - fs/fat12.inc ; 7400 -> 78ff << IDT for int_0x00..int_0x40 + reserv ; 7900 -> 7EFF << saved picture under mouse pointer (1k5) ; ; 7F00 -> 7FFF << SB16_Status (256) ; ; XX 8000 -> BFFF free (16k) XX ; 0x80008000 -> 9FFF ramdisk fat (8k) ; 0x8000A000 -> BFFF floppy fat (8k) ; 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 ; - D201..D2A1 cleaned in fdc.init (fs/fdc.inc) ; D400 -> DFFF free (3k) ; E000 -> F9FF free (6k5) ; FA00 byte no of keys in buffer ; FA01 byte 'buffer' ; FA02 -> FAFF reserved for keys ; FB00 byte no of buttons in buffer ; FB01 dword 'buffer' ; FB02 -> FBFF reserved for buttons ; FC00 -> FCFE com1/ps2 buffer ; FCFF com1/ps2 buffer count starting from FC00 ; FD00 -> FDFF free (256) ; FE00 -> FE0F mouse memory 00 chunk count, that includes: ; FE08 word -- mouse H-scroll ; FE0A word -- mouse x ; FE0C word -- mouse y ; FE0E word -- mouse V-scroll ; FE10 -> FB17 mouse color mem ; FE21 x move ; FE22 y move ; FE28 high bits temp ; FE30 color temp ; FE40 byte buttons down ; FE44 byte 0 mouse down -> do not draw ; FE4A -> FE4D FE4A-B x-under - FE4C-D y-under ; FEB8 dword putpixel address ; FEBC dword getpixel address ; FEC1 byte bits per pixel ; FEC4 dword mouse appearance counter ; FEC8 dword x & y temp for windowmove ; FECC dword tsc / second ; FED0 dword screen x size ; FED4 dword screen y size ; FED8 dword screen y multiplier ; FEDC dword screen mode ; FEE4 dword PCIe extended (memory-mappable) config space - physical address ; FEE8 dword PCIe extended config space limit ; FEEC word number of 4M-pages needed to map PCIe config space ; FEEE word PCIe bus range (power-ow-two Mbytes) ; FEF0 dword physical address of user-accessible static system buffer ; FEF4 dword physical address of LFB ; FEF8 dword address of button list ; FEFC dword memory to use ; FF00 byte 1 = system shutdown request ; FF01 byte task activation request? ; FFE4 -> FFEF background info ; FFF0 byte >0 if redraw background request from app ; FFF1 byte >0 if background changed ; 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 the kernel (up to 371 Kb) ; in the current version: ; -> 00B3C 16-bit code end ; -> 00C40 16-bit data end ; -> 105F0 32-bit code start ; -> 2C889 32-bit code end ; -> 2FC28..end_of_kernel zero-filled zone after preinit_mem ; -> 33563 uninitialized globals start ; -> 3B752 end_of_kernel ; -> 3C000 not used (>200k) ; 0x80050000 -> 090000 zero-filled zone after preinit_mem ; 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 wav device buffer (64k) ; << SB16Buffer ; 0x800A0000 -> AFFFF screen access area << VGA legacy buffer ; 0x800B0000 -> FFFFF bios rest in peace -area (320k), << purpose unknown ; 0x80100000 -> 283FFF diskette image (1m5) ; 0x80284000 -> HEAP_BASE zero-filled zone after preinit_mem ; ; 0x80284000 -> 28BFFF HDD DMA AREA (32k) ; 0x8028C000 -> 297FFF free (48k) ; ; 0x80298000 -> 29ffff auxiliary table for background smoothing code (32k) ; ; 0x802A0000 -> 2Bffff free (128k) ; 0x80328000 -> 32FFFF !vrr driver (32k) ; 0x80338000 -> 338FFF draw data - 256 entries (4k) ; 00 dword draw limit - x start ; 04 dword draw limit - y start ; 08 dword draw limit - x end ; 0C dword draw limit - y end ; 0x80339000 -> 3BFFF3 free (12k) ; 0x802C0000 -> 2C3fff button info (8k) ; ; 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 (48k) ; ; 0x802D0000 -> 2DFFFF reserved port area (64k) ; ; 0000 dword no of port areas reserved ; 0010 dword process id ; dword start port ; dword end port ; dword 0 ; ; 0x80370000 -> 37FFFF irq data area (64k) ; 0x80380000 -> 38FFFF low memory save (64k) ; ; 0x80390000 -> 3AFFFF tcp memory (128k) ; 0x803B0000 -> 3B7FFF tcp memory (32k) ; 0x803B8000 -> 3BFFFF skin data (32k) ; 0x803C0000 page map (length b = memsize shr 15) ; 0x803C0000 + b start of static pagetables ; 0x803FFFFF <- no direct address translation beyond this point ; ============================================================= ; 0x805FF000 -> 5FFF80 TSS ; 0x80600000 -> 601FFF i/o maps ; 0x80800000 ->827FFFFF kernel heap ; 0xF0000000 -> 0xF1FFFFFF PCI-express extended config space ; 0xFD000000 -> 0xFD3FFFFF static system buffer 4Mb ; 0xFDC00000 -> 0xFDFFFFFF page tables 4Mb ; 0xFE000000 -> 0xFFFFFFFF LFB 32Mb ; 0xFE000000 -> 0xFE7FFFFF application available LFB 8Mb ; 0xFE800000 -> 0xFFFFFFFF kernel LFB part 24 Mb