int13.txt

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SeeAlso: AH=08h"PC",AH=12h"SyQuest",AH=15h,AH=59h"SyQuest"
--------B-1314-------------------------------
INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC
	AH = 14h
Return: CF set on error
	CF clear if successful
	AH = status code (see #0166 at AH=01h)
	AL = 00h
SeeAlso: AH=12h,AH=13h
--------B-1315-------------------------------
INT 13 - DISK - GET DISK TYPE (XT 1/10/86 or later,XT286,AT,PS)
	AH = 15h
	DL = drive number (bit 7 set for hard disk)
Return: CF clear if successful
	    AH = type code
		00h no such drive
		01h floppy without change-line support
		02h floppy (or other removable drive) with change-line support
		03h hard disk
		    CX:DX = number of 512-byte sectors
	CF set on error
	    AH = status (see #0166 at AH=01h)
Note:	SyQuest can report type 01h or 02h for 'hard disks', since its media
	  is removable
SeeAlso: AH=08h,AH=16h,AH=17h,AH=19h"SCSI"
--------B-1316-------------------------------
INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XT 1/10/86 or later,XT286,AT,PS)
	AH = 16h
	DL = drive number (00h-7Fh)
Return: CF clear if change line inactive
	    AH = 00h (disk not changed)
	CF set if change line active
	    AH = status
		01h invalid command (SyQuest)
		06h change line active or not supported
		80h drive not ready or not present
Notes:	call AH=15h first to determine whether the drive supports a change
	  line
	this call also clears the media-change status, so that a disk change
	  is only reported once
BUG:	some versions of Award 386 Modular BIOS and AMI BIOS fail to clear
	  the media-change status
SeeAlso: AH=15h,AH=49h
--------B-1317-------------------------------
INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS)
	AH = 17h
	AL = format type
	    01h = 320/360K disk in 360K drive
	    02h = 320/360K disk in 1.2M drive
	    03h = 1.2M disk in 1.2M drive
	    04h = 720K disk in 720K or 1.44M drive
	DL = drive number
Return: CF set on error
	CF clear if successful
	AH = status (see #0166 at AH=01h)
Note:	this function does not handle 1.44M drives; use AH=18h instead
SeeAlso: AH=15h,AH=18h
--------d-131700-----------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET INQUIRY INFO FROM SCSI DEVICE
	AX = 1700h
	CL = length of buffer
	DL = hard drive ID
	ES:BX -> buffer for info (see #0175)
Return: CF clear if successful
	    CH = number of bytes returned in buffer???
	CF set on error
	    AH = status code (see #0166 at AH=01h)
Notes:	this function is not available with 8-bit controller ROM versions < 7.0
	information block bytes 5-n are vendor-specific in older SCSI devices
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=18h"SCSI",AH=1Bh"SCSI"

Format of Future Domain SCSI inquiry information block:
Offset	Size	Description	(Table 0175)
 00h	BYTE	device type
		bits 0-4: peripheral device type (see #0176)
		bits 5-7: peripheral qualifier (see #0177)
 01h	BYTE	device type modifier
		bits 0-6: device type modifier
		bit 7: removable medium
 02h	BYTE	SCSI version (see #0178)
 03h	BYTE	data format/capabilities (see #0179)
 04h	BYTE	additional data length (total remaining bytes)
 05h  2 BYTEs	reserved
 07h	BYTE	device capabilities (see #0180)
 08h  8 BYTEs	vendor identification (space-padded ASCII)
 10h  8 BYTEs	product identification (space-padded ASCII)
 20h  4 BYTEs	product revision level (space-padded ASCII)
 24h 20 BYTEs	vendor specific
 38h 40 BYTEs	reserved
 60h	var	vendor specific parameters

(Table 0176)
Values for Future Domain SCSI peripheral device type:
 00h	direct-access device (e.g., magnetic disk)
 01h	sequential-access device (e.g., magnetic tape)
 02h	printer device
 03h	processor device
 04h	write-once device (e.g., some optical disks)
 05h	CD-ROM device
 06h	scanner device
 07h	optical memory device (e.g., some optical disks)
 08h	medium changer device (e.g., jukeboxes)
 09h	communications device
 0Ah	(defined by ASC IT8)
 0Bh	(defined by ASC IT8)
 0Ch-1Eh reserved
 1Fh	unknown or no device type

(Table 0177)
Values for Future Domain SCSI peripheral qualifier:
 000b	device is currently connected to this logical unit and available
 001b	target is capable of supporting the specified peripheral, but the
	  physical device is not currently connected to this logical unit
 010b	reserved
 011b	target can't support a physical device on this logical unit
 1xxb	vendor specific

Bitfields for Future Domain SCSI version:
Bit(s)	Description	(Table 0178)
 0-2	ANSI-approved version
	000 device might or might not comply to ANSI standard
	001 device complies to ANSI SCSI-1
	010 device complies to ANSI SCSI-2
	other reserved
 3-5	ECMA version
 6-7	ISO version

Bitfields for Future Domain SCSI data format/capabilities:
Bit(s)	Description	(Table 0179)
 0-2	response data format
	000 information block is as specified in SCSI-1
	001 information block is as specified in CCS
	010 information block is as specified in SCSI-2
	other reserved
 4-5	reserved
 6	terminate I/O process supported
 7	asynchronous event notification supported

Bitfields for Future Domain SCSI device capabilities:
Bit(s)	Description	(Table 0180)
 0	device responds to RESET with a hard RESET
 1	tagged command queuing supported
 2	reserved
 3	linked commands supported
 4	synchronous data transfer supported
 5	16-transfers supported
 6	32-transfers supported
 7	relative addressing supported
--------B-1318-------------------------------
INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)
	AH = 18h
	DL = drive number
	CH = lower 8 bits of highest cylinder number (number of cylinders - 1)
	CL = sectors per track (bits 0-5)
	     top 2 bits of highest cylinder number (bits 6,7)
Return: AH = status
	    00h requested combination supported
	    01h function not available
	    0Ch not supported or drive type unknown
	    80h there is no disk in the drive
	ES:DI -> 11-byte parameter table (see #0960 at INT 1E)
Note:	this function does not set the INT 1E vector to point at the returned
	  parameter table; it is the caller's responsibility to do so
SeeAlso: AH=05h,AH=07h,AH=17h,INT 1E
--------d-1318-------------------------------
INT 13 - Future Domain SCSI BIOS - GET SCSI CONTROLLER INFORMATION
	AH = 18h
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #0166 at AH=01h)
	CF clear if successful
	    AX = 4321h (magic number)
	    CX = controller family code (see #0181)
	    ---if family code=0200h
		DH = number of exclusively ROM-controlled SCSI devices
		DL = canonical SCSI device number for specified drive
	    ---if family code <> 0200h
		BH = number of exclusively ROM-controlled SCSI devices
		BL = canonical SCSI device number for specified drive
Notes:	also sets an internal flag (non-resettable) which prevents some
	  controller messages from being displayed, allows writes to
	  removable devices (use caution!), and enables the INT 13 interface
	  for more than one drive (i.e. DL >= 81h) in at least some ROM
	  versions
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=05h"SCSI",AX=1700h"SCSI",AH=1Bh"SCSI",INT 4F/AX=8100h

(Table 0181)
Values for Future Domain SCSI controller family code:
 0200h	TMC-1680/? (ROM 3.0)
 0203h	TMC-1650/1660/1670/1680 (ROM 2.0)
 040Ah	TMC-820/830/840/850/860/870/875/880/885 (ROM <= 6.0A)
 050Dh	TMC-840/841/880/881 (ROM 5.2D)
 0700h	TMC-830/850/860/875/885 (ROM 7.0)
--------d-1318--CX5055-----------------------
INT 13 - PU_1700.COM - INSTALLATION CHECK
	AH = 18h
	CX = 5055h ('PU')
	DL = 00h
Return: AX = 7570h ('up') if PU_1700 is installed
Program: PU_1700 is a BIOS enhancer from PU Service Systems which permits
	  formatting diskettes at higher capacity (1.78M instead of 1.44M)
SeeAlso: AX=057Fh/SI=324Dh"2M"
--------d-1318--CXD2C9-----------------------
INT 13 - XDF.COM - API
	AH = 18h
	CX = D2C9h ("R"+80h, "I"+80h = Roger Ivey)
	DX = 0000h
	BX = function
	    0000h installation check
		  Return: AH = 0Ch
			  CX = 7269h ("ri" = Roger Ivey)
			  ES = segment of driver
			  CF set
	    2F64h ("/d") disable the driver
		  Return: AH = 0Ch
			  ES:BX = pointer to activation flag (it is set to 0:
				  set it to 1 to enable the driver again)
			  CX = 7269h
			  CF set
	    2F75h ("/u") unload the driver (restore interrupts & free memory)
		  Return: AH = 0Ch
			  DL = 55h ("U") if successful
			     = 00h	   if fails
			  CX = 7269h
			  ES = segment of driver
			  CF set
			  AL, BX, DH, and DI destroyed
Program: XDF is a TSR provided with PC-DOS 7.0 to support XDF 1.84M disks,
	  developed by Roger D. Ivey
Note:	After disabling or enabling the driver, a disk change must be performed
	  or simulated to reset the driver.
--------B-1319-------------------------------
INT 13 - FIXED DISK - PARK HEADS ON ESDI DRIVE (XT286,PS)
	AH = 19h
	DL = drive
Return: CF set on error
	CF clear if successful
	AH = status (see #0166 at AH=01h)
SeeAlso: AH=11h
--------d-1319-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - REINITIALIZE DRIVE
	AH = 19h
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #0166 at AH=01h)
	CF clear if successful
	    AH = disk type (03h = fixed disk)
	    CX:DX = number of 512-byte sectors
Notes:	sends SCSI Read Capacity command to get number of logical blocks and
	  adjusts the result for 512-byte sectors
	displays either "Error in Read Capacity Command" or "nnn Bytes per
	  sector" (nnn=256 or 512, the only sizes supported in the translation
	  code)
	should probably be called when a removable device has its media changed
	returns the same values as AH=15h
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=15h,AH=1Ah,INT 4F/AX=8100h
--------d-131A-------------------------------
INT 13 - ESDI FIXED DISK - FORMAT UNIT (PS)
	AH = 1Ah
	AL = defect table entry count
	CL = format modifiers (see #0182)
	DL = drive (80h,81h)
	ES:BX -> defect table (see #0183), ignored if AL=00h
Return: CF set on error
	CF clear if successful
	AH = status (see #0166 at AH=01h)
Note:	if periodic interrupt selected, INT 15/AH=0Fh is called after each
	  cylinder is formatted
SeeAlso: AH=07h,INT 15/AH=0Fh

Bitfields for ESDI format modifiers:
Bit(s)	Description	(Table 0182)
 4	generate periodic interrupt
 3	perform surface analysis
 2	update secondary defect map
 1	ignore secondary defect map
 0	ignore primary defect map

Format of defect table entry [array]:
Offset	Size	Description	(Table 0183)
 00h  3 BYTEs	relative sector address (little-endian)
 03h	BYTE	flags and defect count
		bit 7: last logical sector on track
		bit 6: first logical sector on track
		bit 5: last logical sector on cylinder
		bit 4: logical sectors are pushed onto next track
		bits 3-0: number of defects pushed from previous cylinder
--------d-131A-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET SCSI PARTIAL MEDIUM CAPACITY
	AH = 1Ah
	CH = track (bits 8,9 in high bits of CL)
	CL = sector (01h to number of sectors/track for drive)
	DH = head
	DL = hard drive ID
Return: CF set on error
	AH = status code (see #0166 at AH=01h)
	CX:DX = logical block number of last quickly-accessible block after
		given block
Notes:	sends SCSI Read Capacity command with the PMI bit set to obtain the
	  logical block address of the last block after which a substantial
	  delay in data transfer will be encountered (usually the last block
	  on the current cylinder).  No translation to 512 byte sectors is
	  performed on the result if data is stored on the disk in other than
	  512 byte sectors.
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=15h,AH=19h"SCSI"
--------d-131B-------------------------------
INT 13 - ESDI FIXED DISK - GET MANUFACTURING HEADER
	AH = 1Bh
	AL = number of sectors to read
	DL = drive
	ES:BX -> buffer for manufacturing header (defect list)
Return: CF set on error
	CF clear if successful
	AH = status
Note:	manufacturing header format (Defect Map Record format) can be found
	  in IBM 70MB, 115MB Fixed Disk Drives Technical Reference
	the first sector read contains the manufacturing header with the number
	  of defect entries and the beginning of the defect map; the remaining
	  sectors contain the remainder of the defect map
--------d-131B-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO SCSI DISK INFO BLOCK
	AH = 1Bh
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #0166 at AH=01h)
	CF clear if successful
	    ES:BX -> SCSI disk information block (see #0184)