source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Main.asm@ 144

; Project name  :   XTIDE Universal BIOS
; Authors       :   Tomi Tilli
;               :   aitotat@gmail.com
;               :
;               :   Krister Nordvall
;               :   krille_n_@hotmail.com
;               :
; Description   :   Main file for BIOS. This is the only file that needs
;                   to be compiled since other files are included to this
;                   file (so no linker needed, Nasm does it all).

ORG 000h                        ; Code start offset 0000h


; Included .inc files
%include "AssemblyLibrary.inc"  ; Assembly Library. Must be included first!
%include "Interrupts.inc"       ; For interrupt equates
%include "ATA_ID.inc"           ; For ATA Drive Information structs
%include "IdeRegisters.inc"     ; For ATA Registers, flags and commands
%include "Int13h.inc"           ; Equates for INT 13h functions
%include "CustomDPT.inc"        ; For Disk Parameter Table
%include "RomVars.inc"          ; For ROMVARS and IDEVARS structs
%include "RamVars.inc"          ; For RAMVARS struct
%include "BootVars.inc"         ; For BOOTVARS and BOOTNFO structs
%include "BootMenu.inc"         ; For Boot Menu
%include "IDE_8bit.inc"         ; For IDE 8-bit data port macros


; Section containing code
SECTION .text

; ROM variables (must start at offset 0)
CNT_ROM_BLOCKS      EQU     16  ; 16 * 512B = 8kB BIOS
istruc ROMVARS
    at  ROMVARS.wRomSign,   dw  0AA55h          ; PC ROM signature
    at  ROMVARS.bRomSize,   db  CNT_ROM_BLOCKS  ; ROM size in 512B blocks
    at  ROMVARS.rgbJump,    jmp Initialize_FromMainBiosRomSearch
    at  ROMVARS.rgbSign,    db  "XTIDE120"      ; Signature for flash program
    at  ROMVARS.szTitle
        db  "-=XTIDE Universal BIOS"
%ifdef USE_AT
        db  " (AT)=-",NULL
%elifdef USE_186
        db  " (XT+)=-",NULL
%else
        db  " (XT)=-",NULL
%endif
    at  ROMVARS.szVersion,  db  "v1.2.0_wip (",__DATE__,")",NULL

;---------------------------;
; AT Build default settings ;
;---------------------------;
%ifdef USE_AT
    at  ROMVARS.wFlags,         dw  FLG_ROMVARS_FULLMODE | FLG_ROMVARS_DRVXLAT
    at  ROMVARS.wDisplayMode,   dw  DEFAULT_TEXT_MODE
    at  ROMVARS.wBootTimeout,   dw  30 * TICKS_PER_SECOND   ; Boot Menu selection timeout
    at  ROMVARS.bIdeCnt,        db  3                       ; Number of supported controllers
    at  ROMVARS.bBootDrv,       db  80h                     ; Boot Menu default drive
    at  ROMVARS.bMinFddCnt,     db  0                       ; Do not force minimum number of floppy drives
    at  ROMVARS.bStealSize,     db  1                       ; Steal 1kB from base memory

    at  ROMVARS.ideVars0+IDEVARS.wPort,         dw  1F0h            ; Controller Command Block base port
    at  ROMVARS.ideVars0+IDEVARS.wPortCtrl,     dw  3F0h            ; Controller Control Block base port
    at  ROMVARS.ideVars0+IDEVARS.bBusType,      db  BUS_TYPE_16     ; Bus type
    at  ROMVARS.ideVars0+IDEVARS.bIRQ,          db  14              ; IRQ
    at  ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars1+IDEVARS.wPort,         dw  170h            ; Controller Command Block base port
    at  ROMVARS.ideVars1+IDEVARS.wPortCtrl,     dw  370h            ; Controller Control Block base port
    at  ROMVARS.ideVars1+IDEVARS.bBusType,      db  BUS_TYPE_16     ; Bus type
    at  ROMVARS.ideVars1+IDEVARS.bIRQ,          db  15              ; IRQ
    at  ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars2+IDEVARS.wPort,         dw  300h            ; Controller Command Block base port
    at  ROMVARS.ideVars2+IDEVARS.wPortCtrl,     dw  308h            ; Controller Control Block base port
    at  ROMVARS.ideVars2+IDEVARS.bBusType,      db  BUS_TYPE_8_DUAL ; Bus type
    at  ROMVARS.ideVars2+IDEVARS.bIRQ,          db  0               ; IRQ
    at  ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars3+IDEVARS.wPort,         dw  168h            ; Controller Command Block base port
    at  ROMVARS.ideVars3+IDEVARS.wPortCtrl,     dw  368h            ; Controller Control Block base port
    at  ROMVARS.ideVars3+IDEVARS.bBusType,      db  BUS_TYPE_16     ; Bus type
    at  ROMVARS.ideVars3+IDEVARS.bIRQ,          db  0               ; IRQ
    at  ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE
%else
;-----------------------------------;
; XT and XT+ Build default settings ;
;-----------------------------------;
    at  ROMVARS.wFlags,         dw  FLG_ROMVARS_DRVXLAT
    at  ROMVARS.wDisplayMode,   dw  DEFAULT_TEXT_MODE
    at  ROMVARS.wBootTimeout,   dw  30 * TICKS_PER_SECOND   ; Boot Menu selection timeout
    at  ROMVARS.bIdeCnt,        db  1                       ; Number of supported controllers
    at  ROMVARS.bBootDrv,       db  80h                     ; Boot Menu default drive
    at  ROMVARS.bMinFddCnt,     db  1                       ; Assume at least 1 floppy drive present if autodetect fails
    at  ROMVARS.bStealSize,     db  1                       ; Steal 1kB from base memory in full mode

    at  ROMVARS.ideVars0+IDEVARS.wPort,         dw  300h            ; Controller Command Block base port
    at  ROMVARS.ideVars0+IDEVARS.wPortCtrl,     dw  308h            ; Controller Control Block base port
    at  ROMVARS.ideVars0+IDEVARS.bBusType,      db  BUS_TYPE_8_DUAL ; Bus type
    at  ROMVARS.ideVars0+IDEVARS.bIRQ,          db  0               ; IRQ
    at  ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE
%endif
iend


; Include .asm files (static data and libraries)
%include "AssemblyLibrary.asm"
%include "Strings.asm"          ; For BIOS message strings

; Include .asm files (Initialization and drive detection)
%include "Initialize.asm"       ; For BIOS initialization
%include "Interrupts.asm"       ; For Interrupt initialization
%include "RamVars.asm"          ; For RAMVARS initialization and access
%include "CreateDPT.asm"        ; For creating DPTs
%include "FindDPT.asm"          ; For finding DPTs
%include "AccessDPT.asm"        ; For accessing DPTs
%include "BootInfo.asm"         ; For creating BOOTNFO structs
%include "AtaID.asm"            ; For ATA Identify Device information
%include "DetectDrives.asm"     ; For detecting IDE drives
%include "DetectPrint.asm"      ; For printing drive detection strings

; Include .asm files (boot menu)
%include "BootMenu.asm"         ; For Boot Menu operations
%include "BootMenuEvent.asm"    ; For menu library event handling
%include "FloppyDrive.asm"      ; Floppy Drive related functions
%include "BootSector.asm"       ; For loading boot sector
%include "BootPrint.asm"        ; For printing boot information
%include "BootMenuPrint.asm"    ; For printing Boot Menu strings
%include "BootMenuPrintCfg.asm" ; For printing hard disk configuration

; Include .asm files (general drive accessing)
%include "DriveXlate.asm"       ; For swapping drive numbers
%include "HAddress.asm"         ; For sector address translations
%include "HCapacity.asm"        ; For calculating drive capacity
%include "HError.asm"           ; For error checking
%include "HPIO.asm"             ; For PIO transfers
%include "HIRQ.asm"             ; For IRQ handling
%include "HStatus.asm"          ; For reading hard disk status
%include "HDrvSel.asm"          ; For selecting drive to access
%include "HCommand.asm"         ; For outputting command and parameters
%include "HTimer.asm"           ; For timeout and delay

; Include .asm files (Interrupt handlers)
%include "Int13h.asm"           ; For Int 13h, Disk functions
%ifndef USE_AT
    %include "Int19hLate.asm"   ; For late initialization
%endif
%include "Int19hMenu.asm"       ; For Int 19h, Boot Loader for Boot Menu

; Include .asm files (Hard Disk BIOS functions)
%include "AH0h_HReset.asm"      ; Required by Int13h_Jump.asm
%include "AH1h_HStatus.asm"     ; Required by Int13h_Jump.asm
%include "AH2h_HRead.asm"       ; Required by Int13h_Jump.asm
%include "AH3h_HWrite.asm"      ; Required by Int13h_Jump.asm
%include "AH4h_HVerify.asm"     ; Required by Int13h_Jump.asm
%include "AH8h_HParams.asm"     ; Required by Int13h_Jump.asm
%include "AH9h_HInit.asm"       ; Required by Int13h_Jump.asm
%include "AHCh_HSeek.asm"       ; Required by Int13h_Jump.asm
%include "AHDh_HReset.asm"      ; Required by Int13h_Jump.asm
%include "AH10h_HReady.asm"     ; Required by Int13h_Jump.asm
%include "AH11h_HRecal.asm"     ; Required by Int13h_Jump.asm
%include "AH15h_HSize.asm"      ; Required by Int13h_Jump.asm
%include "AH23h_HFeatures.asm"  ; Required by Int13h_Jump.asm
%include "AH24h_HSetBlocks.asm" ; Required by Int13h_Jump.asm
%include "AH25h_HDrvID.asm"     ; Required by Int13h_Jump.asm



; Fill with zeroes until size is what we want
;times (CNT_ROM_BLOCKS*512)-($-$$) db 0