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• AT/XT286/PS50+
  • destroyed by return from protected mode
  • AT/XT286/PS50+ - destroyed by return from protected mode

• BIOS
  • GET EQUIPMENT LIST
  • GET MEMORY SIZE
  • JOYSTICK SUPPORT (XT after 1982/11/8,AT,XT286,PS)
  • SET EVENT WAIT INTERVAL (AT,PS50+)
  • BIOS - WAIT (AT,PS)

• CASSETTE
  • READ DATA (PC and PCjr only)
  • TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
  • TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
  • CASSETTE - WRITE DATA (PC and PCjr only)

• DISK
  • GET DISK TYPE (XT 1986/1/10 or later,XT286,AT,PS)
  • GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI)
  • GET STATUS OF LAST OPERATION
  • READ SECTOR(S) INTO MEMORY
  • RESET DISK SYSTEM
  • SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)
  • VERIFY DISK SECTOR(S)
  • DISK - WRITE DISK SECTOR(S)

• DISKETTE - ROM BIOS DISKETTE HANDLER RELOCATED BY HARD DISK BIOS
• DISKLESS BOOT HOOK (START CASSETTE BASIC)

• FIXED DISK
  • FORMAT DRIVE STARTING AT GIVEN TRACK (XT,PORT)
  • FORMAT TRACK
  • FORMAT TRACK AND SET BAD SECTOR FLAGS (XT,PORT)
  • FIXED DISK - PARK HEADS ON ESDI DRIVE (XT286,PS)

• FLOPPY - FORMAT TRACK

• FLOPPY DISK
  • DETECT DISK CHANGE (XT 1986/1/10 or later,XT286,AT,PS)
  • FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS)

• HARD DISK
  • CHECK IF DRIVE READY
  • CONTROLLER INTERNAL DIAGNOSTIC
  • CONTROLLER RAM DIAGNOSTIC (XT,PS)
  • DRIVE DIAGNOSTIC (XT,PS)
  • INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (AT,PS)
  • READ LONG SECTOR(S) (AT and later)
  • READ SECTOR BUFFER (XT only)
  • RECALIBRATE DRIVE
  • RESET HARD DISKS
  • SEEK TO CYLINDER
  • WRITE LONG SECTOR(S) (AT and later)
  • HARD DISK - WRITE SECTOR BUFFER (XT only)

• IBM BIOS
  • SMART ENERGY SYSTEM - ???
  • SMART ENERGY SYSTEM - GET ??? CMOS DATA
  • SMART ENERGY SYSTEM - GET PROCESSOR SPEED
  • SMART ENERGY SYSTEM - GET ROM STARTUP VIDEO REG TABLES
  • SMART ENERGY SYSTEM - SET ??? CMOS DATA
  • IBM BIOS - SMART ENERGY SYSTEM - SYSTEM SETUP

• IBM SurePath BIOS
  • ACCESS LOADABLE-ABIOS SIGNATURE
  • Officially Private Function
  • Officially Private Function
  • Officially Private Function
  • IBM SurePath BIOS - WAIT REQUESTED TIME PERIOD

• KEYBOARD
  • CHECK FOR 122-KEY KEYSTROKE (122-key kbd support only)
  • CHECK FOR ENHANCED KEYSTROKE (enh kbd support only)
  • CHECK FOR KEYSTROKE
  • CONTROL-BREAK HANDLER
  • CORDLESS KEYBOARD TRANSLATION (PCjr)
  • GET 122-KEY KEYSTROKE (122-key kbd support only)
  • GET 122-KEY SHIFT STATUS (122-key kbd support only)
  • GET ENHANCED KEYSTROKE (enhanced kbd support only)
  • GET EXTENDED SHIFT STATES (enh kbd support only)
  • GET KEYBOARD FUNCTIONALITY
  • GET KEYSTROKE
  • GET SHIFT FLAGS
  • KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS)
  • SELECT KEYBOARD LAYOUT (PCjr only)
  • SET KEYCLICK (PCjr only)
  • SET TYPEMATIC RATE AND DELAY
  • KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (AT/PS w enh keybd only)

• Later PS/2 models - GET POS DATA

• Later PS/2s
  • ALLOCATE DMA ARBITRATION LEVEL
  • DEALLOCATE DMA ARBITRATION LEVEL
  • GET NUMBER OF DEVICE DESCRIPTOR TABLE (DDT) ENTRIES
  • GET PHYSICAL FIXED DISK DRIVE NUMBER (SELECTABLE BOOT)
  • QUERY BOOT REFERENCE PARTITION
  • READ BOOT DEVICE ID
  • READ BOOT DEVICE KEY
  • RESERVED
  • RESERVED
  • RESERVED
  • RESERVED
  • RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY DEVICE ID
  • RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY I/O ADDRSS
  • RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY NUMBER
  • RETURN ENTIRE DDT
  • WRITE BOOT DEVICE ID
  • Later PS/2s - WRITE BOOT DEVICE KEY

• Newer PS/2; various BIOSes - GET CPU TYPE AND MASK REVISION

• OS HOOK
  • DEVICE BUSY (AT,PS)
  • DEVICE CLOSE
  • DEVICE OPEN (AT,XT286,PS)
  • DEVICE POST (AT,PS)
  • PROGRAM TERMINATION
  • ROM BIOS TRACING CALLOUT (PS30/286,PS50Z,PS95)
  • OS HOOK - SysReq KEY ACTIVITY (AT,PS)

• PRINT SCREEN

• PRINTER
  • GET STATUS
  • INITIALIZE PORT
  • PRINTER - WRITE CHARACTER

• PS/2 Model 95
  • READ/WRITE CMOS MEMORY
  • RESERVED
  • RESERVED
  • PS/2 Model 95 - RESERVED

• SYSTEM
  • (DE)ACTIVATE INTERNAL MODEM POWER (CONVERTIBLE)
  • BOOTSTRAP LOADER
  • BUILD ABIOS INITIALIZATION TABLE (PS)
  • BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
  • COPY EXTENDED MEMORY
  • ENABLE/DISABLE PROCESSOR FUNCTIONS
  • ENABLE/DISABLE WATCHDOG TIMEOUT (PS50+)
  • GET CONFIGURATION (XT >1986/1/10,AT mdl 3x9,CONV,XT286,PS)
  • GET EXTENDED MEMORY SIZE (286+)
  • later PS/2s - EXPANSION UNIT, RETURN CONFIGURATION NUMBER
  • later PS/2s - LOCATE ROM BASIC
  • later PS/2s - RETURN MEMORY-MAP INFORMATION
  • POWER-ON SELF-TEST ERROR LOG (PS50+)
  • PROGRAMMABLE OPTION SELECT (PS50+)
  • READ SYSTEM STATUS (CONVERTIBLE)
  • READ/MODIFY PROFILES (CONVERTIBLE)
  • REQUEST POWER OFF (CONVERTIBLE,HP 95LX)
  • RETURN EXTENDED-BIOS DATA-AREA SEGMENT ADDRESS (PS)
  • SWITCH TO PROTECTED MODE
  • USER ALARM HANDLER
  • SYSTEM - WAIT ON EXTERNAL EVENT (CONVERTIBLE and some others)

• SYSTEM DATA
  • 8x8 GRAPHICS FONT
  • DISKETTE PARAMETERS
  • HARD DISK 0 PARAMETER TABLE ADDRESS [NOT A VECTOR!]
  • HARD DISK 1 DRIVE PARAMETER TABLE ADDRESS [NOT A VECTOR!]
  • NON-KEYBOARD SCAN-CODE TRANSLATION TABLE (PCjr)
  • SYSTEM DATA - VIDEO PARAMETER TABLES

• TI Professional PC
  • DISK - GET DEVICE INTERFACE TABLE ADDRESS
  • DISK - GET RETRY STATUS OF LAST OPERATION
  • DISK - GET STATUS OF LAST OPERATION
  • DISK - NOP
  • DISK - READ SECTOR(S) INTO MEMORY
  • DISK - RESET DISK SYSTEM
  • DISK - SET DEVICE INTERFACE TABLE ADDRESS
  • DISK - SET STANDARD DEVICE INTERFACE TABLE
  • DISK - TURN OFF ALL DRIVES
  • DISK - VERIFY DISK SECTOR CRC(S)
  • DISK - VERIFY DISK SECTOR(S)
  • TI Professional PC - DISK - WRITE SECTOR(S) FROM MEMORY

• TIME
  • CANCEL ALARM (AT,XT286,PS)
  • GET REAL-TIME CLOCK DATE (AT,XT286,PS)
  • GET REAL-TIME CLOCK TIME (AT,XT286,PS)
  • GET RTC DATE/TIME ALARM AND STATUS (IBM)
  • GET SYSTEM TIME
  • INITIALIZE REAL-TIME CLOCK
  • READ RTC ALARM TIME AND STATUS (CONV,PS30)
  • READ SYSTEM-TIMER DAY COUNTER (XT2,PS)
  • RESET RTC DATE/TIME ACTIVATED POWER-ON MODE (IBM)
  • SET ALARM (AT,XT286,PS)
  • SET REAL-TIME CLOCK DATE (AT,XT286,PS)
  • SET REAL-TIME CLOCK TIME (AT,XT286,PS)
  • SET RTC ACTIVATED POWER ON MODE (CONVERTIBLE)
  • SET RTC DATE/TIME ACTIVATED POWER-ON MODE (IBM)
  • SET SYSTEM TIME
  • SET SYSTEM-TIMER DAY COUNTER (XT2,PS)
  • TIME - SYSTEM TIMER TICK

• Toshiba laptops
  • SECURITY LEVEL CHECK
  • SECURITY LEVEL CHECK
  • Toshiba laptops - SECURITY LEVEL CHECK

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