Index for interrupt INT E6

Table of Contents by Order
E6 - INT E6 - IBM ROM BASIC - used while in interpreter
E6 - INT E6 C - CP/M-86 v1.1 - XIOS INTERRUPT / UNKNOWN DISK DRIVE
E600 - INT E6 - Linux DOSEMU - INSTALLATION CHECK
E601 - INT E6 - Linux DOSEMU - REGISTER DUMP
E602 - INT E6 - Linux DOSEMU - SET I/O PORT PERMISSIONS
E605 - INT E6 - Linux DOSEMU - STARTUP BANNER
E612 - INT E6 - Linux DOSEMU - SET "HOGTHRESHOLD"
E622 - INT E6 - Linux DOSEMU - GET EMS STATUS
E630 - INT E6 - Linux DOSEMU - SET BOOTDISK FLAG
E650 - INT E6 - Linux DOSEMU - EXECUTE UNIX COMMAND
E651 - INT E6 - Linux DOSEMU - EXECUTE DOS COMMAND FROM UNIX
E680 - INT E6 - Linux DOSEMU - GET CURRENT UNIX DIRECTORY
E681 - INT E6 - Linux DOSEMU - CHANGE CURRENT UNIX DIRECTORY
E6FF - INT E6 - Linux DOSEMU - TERMINATE

INT E6 - IBM ROM BASIC - used while in interpreter
Notes:	called by ROM BASIC
	BASIC.COM/BASICA.COM do not restore vector on termination

INT E6 C - CP/M-86 v1.1 - XIOS INTERRUPT / UNKNOWN DISK DRIVE
	AX = function which accessed drive
	    0000h SELDSK
	    0001h READ
	    0002h WRITE
	    0003h HOME
	DX:BX -> parameter block (see #04063)
Return:	AX = return value
Desc:	called by CP/M-86 kernel when an unknown disk drive is used, which
	  permits an application to provide access services
Note:	This was labelled "XIOS interrupt" in later Digital Research
	  documentation (CCP/M-86) and "for the version 1.0 back door".

Format of CP/M-86 unknown-drive paramter block:
Offset	Size	Description	(Table 04063)
 00h	BYTE	drive number (00h = first unknown drive, etc.)
 01h	BYTE	deblocking flag (00h = normal write, 01h = directory write)
 02h	WORD	track number
 04h	WORD	sector number
 06h	DWORD	data transfer address
 0Ah	BYTE	verify flag (nonzero to verify writes)
Note:	in CP/M-86 v1.1, this is actually a portion of a BIOS disk data
	  table which starts one byte before the address given to the INT E6
	  handler; that extra byte is the current logical drive number

INT E6 - Linux DOSEMU - INSTALLATION CHECK
	AH = 00h
Return: AX = AA55h if installed
	    BH = major version number
	    BL = minor version number
	    CX = patchlevel
Notes:	check for the BIOS date string "02/25/93" at F000:FFF5 before
	  calling this function.  In addition, the segment address of this
	  vector should be F000h (for existing versions of DOSemu, the
	  vector is F000h:0E60h)
SeeAlso: AH=FFh

INT E6 - Linux DOSEMU - REGISTER DUMP
	AH = 01h
Return: nothing
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - SET I/O PORT PERMISSIONS
	AH = 02h
	BX = base I/O port address
	CX = number of consecutive I/O ports
	CF set to allow DOS to use ports
	CF clear if DOS should not be allowed to use ports
Return: nothing
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - STARTUP BANNER
	AH = 05h
Return: nothing
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - SET "HOGTHRESHOLD"
	AH = 12h
	BX = new "hogthreshold" (00h-99h)
Return: nothing
Desc:	specify how much CPU time DOSEMU may use
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - GET EMS STATUS
	AH = 22h
Return: ???
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - SET BOOTDISK FLAG
	AH = 30h
	BX = new flag state (0 = false, 1 = true)
Return: nothing
SeeAlso: AH=00h

INT E6 - Linux DOSEMU - EXECUTE UNIX COMMAND
	AH = 50h
	ES:DX -> ASCIZ Unix command
SeeAlso: AH=00h,AH=51h

INT E6 - Linux DOSEMU - EXECUTE DOS COMMAND FROM UNIX
	AH = 51h
	ES:DX -> ASCIZ DOS command
SeeAlso: AH=00h,AH=50h

INT E6 - Linux DOSEMU - GET CURRENT UNIX DIRECTORY
	AH = 80h
Return: ES:DX -> current Unix directory
	AX = length of current directory name
SeeAlso: AH=00h,AH=81h

INT E6 - Linux DOSEMU - CHANGE CURRENT UNIX DIRECTORY
	AH = 81h
	ES:DX -> ASCIZ directory name
Return: nothing
SeeAlso: AH=00h,AH=80h

INT E6 - Linux DOSEMU - TERMINATE
	AH = FFh
SeeAlso: AH=00h