Mega Code Archive
Bios haritası [unit şeklinde]
<![CDATA[
//Ersin Kecis. 01/05/2002. ersin@kecis.4t.com
unit Bios;
interface
var
BiosSeg : record
ComBase : array[1..4] of word;
LptBase : array[1..4] of word;
InstalledHardware : array[1..2] of byte;
POST_Status : byte; { Convertible only }
MemorySize : word;
_RESERVED1 : word;
KeyboardControl : array[1..2] of byte;
AlternateKeypadEntry : byte;
KeyboardBufferHeadPtr : word; { points to first char in type-ahead buffer }
KeyboardBufferTailPtr : word; { points to last char in type-ahead buffer }
KeyboardBuffer : array[1..16] of word;
FloppyRecalStatus : byte;
FloppyMotorStatus : byte;
FloppyMotorOffCounter : byte;
FloppyPrevOpStatus : byte;
FloppyControllerStatus : array[1..7] of byte;
DisplayMode : byte;
NumberOfColumns : word;
RegenBufferLength : word;
RegenBufferAddress : word;
CursorPosition : array[1..8] of word;
CursorType : word;
CurrentDisplayPage : byte;
VideoControllerBaseAddress : word;
Current3x8Register : byte;
Current3x9Register : byte;
PointerToResetCode : pointer; { PS/2 only - except model 30 }
_RESERVED2 : byte;
TimerCounter : longint;
TimerOverflowFlag : byte; { non-zero means timer passed 24 hours }
BreakKeyState : byte;
ResetFlag : word; { $1234=bypass mem test; $4321=preserve mem (PS/2) }
{ $5678=system supended (Convertible) }
{ $9ABC=manufacturing test (Convertible) }
{ $ABCD=system POST loop (Convertible only) }
FixedDiskPrevOpStatus : byte;
NumberOfFixedDrives : byte;
FixedDiskDriveControl : byte; {XT only}
FixedDiskControllerPort : byte; {XT only}
LptTimeOut : array[1..4] of byte; { [4] valid for PC, XT and AT only }
ComTimeOut : array[1..4] of byte;
KeyboardBufferStartOffsetPtr :word;
KeyboardBufferEndOffsetPtr :word;
VideoRows : byte;
CharacterHeight : word; { bytes per character }
VideoControlStates : array[1..2] of byte;
_RESERVED3 : word;
MediaControl : byte;
FixedDiskControllerStatus : byte; { AT, XT after 1/10/85, PS/2 only }
FixedDiskControllerErrorStatus : byte; { AT, XT after 1/10/85, PS/2 only }
FixedDiskInterruptControl : byte; { AT, XT after 1/10/85, PS/2 only }
_RESERVED4 : byte;
DriveMediaState : array[0..1] of byte;
_RESERVED5 : word;
DriveCurrentCylinder : array[0..1] of byte;
KeyboardModeState : byte;
KeyboardLEDflags : byte;
UserWaitCompleteFlagAddress : pointer;
UserWaitCount : longint; { micro-seconds }
WaitActiveFlag : byte;
_RESERVED6 : array[1..7] of byte;
VideoParameterTable : pointer; { EGA and PS/2 only }
DynamicSaveArea : pointer; { EGA and PS/2 only }
AlphaModeAuxCharGenerator : pointer; { EGA and PS/2 only }
GraphicsModeAuxCharGenerator : pointer; { EGA and PS/2 only }
SecondarySaveArea : pointer; { PS/2 only (not Model 30) }
_RESERVED7 : array[1..4] of byte;
_RESERVED8 : array[1..64] of byte;
PrintScreenStatus : byte;
end absolute $0040:$0000;
implementation
end.
]]>