interrup.k

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	    03h get ??? data
		Return: AX = (CMOS 2Dh and CMOS 2Eh)
			BX = FFFFh
	    other does nothing
Note:	function 03h is called by ROMSHELL.COM; if BX != 0, then the ES:DI from
	  INT 2F/AX=1982h points at valid data
SeeAlso: INT 2F/AX=1982h
--------D-2C---------------------------------
INT 2C - DOS 2+ - RESERVED
Note:	this vector is not used in DOS versions <= 6.00, and points at an IRET
--------O-2C---------------------------------
INT 2C - STARLITE architecture - KERNEL API
Note:	STARLITE is an architecture by General Software for a series of MS-DOS
	  compatible operating systems (OEM DOS, NETWORK DOS, and SMP DOS) to
	  be released in 1991.	The interrupt number is subject to change
	  before the actual release.
--------m-2C---------------------------------
INT 2C R - Cloaking - CALL PROTECTED-MODE PASSALONG CHAIN
Notes:	when this interrupt is invoked in V86 mode, RM386 will invoke the first
	  in a chain of protected-mode handlers, and will only pass execution
	  to the V86-mode INT 2C handler if none of the handlers in the
	  passalong chain handle the call instead.  This is the method by which
	  the real-mode stub of a cloaked application communicates with the
	  protected-mode portion.
	the cloaking host calls the passalong chain with EAX=58494E33h ('WIN3')
	  when MS Windows starts up and with EAX=334E4958h ('3NIW') when
	  Windows shuts down; between these two broadcasts, the additional
	  Windows-only Cloaking services are available
	this function was first introduced with RM386 (RAM-MAN/386) v6.00, the
	  memory manager included in Helix Software's Netroom
SeeAlso: INT 2C/AX=0009h,INT 2F/AX=4310h"Cloaking"
--------m-2C0000-----------------------------
INT 2C P - Cloaking - ALLOCATE GDT SELECTOR
	AX = 0000h
	EBX = base address
	CL = access mode byte
	CH = extended access mode byte (omit limit field)
	EDX = segment limit
Return: CF clear if successful
	    AX = selector
	CF set on error
	    AX = error code (see #02556)
Notes:	this INT 2C interface is used by Netroom's DPMI.EXE v3.00
	to access extended memory, set the base address to the desired
	  physical address plus 400000h (4M)
	this function was first introduced with RM386 (RAM-MAN/386) v6.00, the
	  memory manager included in Helix Software's Netroom
SeeAlso: AX=0001h,AX=0002h,AX=0003h,AX=0004h,AX=0005h,INT 31/AH=57h,#00501

(Table 02556)
Values for Cloaking error code:
 0001h	no more selectors
 0002h	not a GDT ring 0 selector
 0003h	invalid selector (out of range, not user selector)
 0004h	selector not allocated
--------m-2C0001-----------------------------
INT 2C P - Cloaking - FREE GDT SELECTOR
	AX = 0001h
	SI = selector
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,INT 2F/AX=4310h"Cloaking"
--------m-2C0002-----------------------------
INT 2C P - Cloaking - SET SEGMENT BASE ADDRESS
	AX = 0002h
	SI = selector
	EBX = new physical base addres
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,AX=0003h,AX=0004h,INT 31/AX=0007h,#00501
--------m-2C0003-----------------------------
INT 2C P - Cloaking - SET SEGMENT LIMIT
	AX = 0003h
	SI = selector
	EBX = new limit
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,AX=0002h,AX=0004h,INT 31/AX=0008h
--------m-2C0004-----------------------------
INT 2C P - Cloaking - SET SEGMENT ACCESS MODE
	AX = 0004h
	SI = selector
	CL = new access mode byte (see #00502)
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,AX=0002h,AX=0003h,AX=0005h,INT 31/AX=0009h
--------m-2C0005-----------------------------
INT 2C P - Cloaking - SET SEGMENT EXTENDED ACCESS MODE
	AX = 0005h
	SI = selector
	CL = new extended access mode byte (limit field ignored) (see #02557)
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,AX=0002h,AX=0003h,AX=0004h,INT 31/AX=0009h

Bitfields for extended access mode byte:
Bit(s)	Description	(Table 02557)
 7	4K granularity instead of byte granularity
 6	32-bit code segment
 5	reserved (0)
 4	segment available to system
SeeAlso: #00505
--------m-2C0006-----------------------------
INT 2C P - Cloaking - GET PROTECTED-MODE INTERRUPT VECTOR
	AX = 0006h
	CL = vector (00h-7Fh)
Return: CF clear
	DX:EBX -> current interrupt handler
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0007h,INT 31/AX=0204h
--------m-2C0007-----------------------------
INT 2C P - Cloaking - SET PROTECTED-MODE INTERRUPT VECTOR
	AX = 0007h
	CL = vector (00h-7Fh)
	DX:EBX -> interrupt handler
Return: CF clear
Notes:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
	the IDT entry's type remains unchanged
SeeAlso: AX=0006h,INT 31/AX=0205h
--------m-2C0008-----------------------------
INT 2C P - Cloaking - GET PASSALONG ADDRESS
	AX = 0008h
Return: CF clear
	DX:EBX = current passalong address
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0009h,AX=002Ch,INT 2F/AX=4310h"Cloaking"
--------m-2C0009-----------------------------
INT 2C P - Cloaking - SET PASSALONG ADDRESS
	AX = 0009h
	DX:EBX = new value for passalong address (see #02558)
Return: CF clear
Notes:	when an INT 2C instruction is executed in V86 mode, the Cloaking host
	  calls the passalong address.	The handler should check whether the
	  upcall is of interest to it, and if not it should jump to the old
	  passalong address (retrieved with AX=0008h before the handler was
	  installed).  The final handler should return with CF clear to cause
	  the interrupt to be reflected back to V86 mode if none of the
	  passalong handlers is triggered
	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0008h,AX=002Dh,INT 2C"PASSALONG CHAIN"

(Table 02558)
Values Cloaking passalong address is called with:
	EAX = CS:IP of byte following INT 2C instruction invoking passalong
	SS:EBX -> caller registers (see #02559)
	CF clear
	others undefined
Return: CF clear: pass along to V86-mode INT 2C handler
	CF set: return immediately to V86 mode

Format of Cloaking caller registers:
Offset	Size	Description	(Table 02559)
 00h	DWORD	EDI
 04h	DWORD	ESI
 08h	DWORD	EBP
 0Ch	DWORD	reserved (ESP from PUSHAD instruction)
 10h	DWORD	EBX
 14h	DWORD	EDX
 18h	DWORD	ECX
 1Ch	DWORD	EAX
 20h	DWORD	error code
 24h	DWORD	EIP
 28h	WORD	CS
 2Ah	WORD	padding
 2Ch	DWORD	EFLAGS
 30h	DWORD	ESP
 34h	WORD	SS
 36h	WORD	padding
--remainder not available if protected-mode ring3 trap---
 38h	WORD	ES
 3Ah	WORD	padding
 3Ch	WORD	DS
 3Eh	WORD	padding
 40h	WORD	FS
 42h	WORD	padding
 44h	WORD	GS
 46h	WORD	padding
--------m-2C000A-----------------------------
INT 2C P - Cloaking - GET BASE ADDRESS OF GDT SELECTOR
	AX = 000Ah
	SI = selector
Return: CF clear if successful
	    EBX = segment base address
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00, the
	  memory manager included in Helix Software's Netroom
SeeAlso: AX=0000h,AX=0002h,AX=000Bh
--------m-2C000B-----------------------------
INT 2C P - Cloaking - GET SELECTOR LIMIT
	AX = 000Bh
	SI = selector
Return: CF clear if successful
	    EBX = segment base address
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=000Ah,INT 2F/AX=4310h"Cloaking"
--------m-2C---------------------------------
INT 2C P - RM386 v6.00 - CLOAKING - RESERVED FOR CLOAKED BIOS USE UNDER WINDOWS
	AX = function (000Ch-001Fh)
--------m-2C000F-----------------------------
INT 2C P - Cloaking v1.01 - "Simulate_Shell_Event"
	AX = 000Fh
	ECX = event code (see #02560)
	DX = subfunction for event
	EDX high word = boost value (see #02561)
	SI:EDI -> completion procedure
Return: CF clear if successful (event scheduled)
	CF set on error
Note:	this function is only available while MS Windows is running
SeeAlso: AX=0011h,AX=0012h,INT 2F/AX=1605h,INT 2F/AX=4310h"Cloaking"

(Table 02560)
Values for Cloaking shell event code:
 0414h	Hot key event
	subevent 0000h: Alt-Space
	subevent 0001h: Alt-Enter
	subevent 0002h: Dir-VM
 0415h	Switch context
	subevent 0000h for DOS VM context, nonzero for System VM context
 0416h	Clipboard event
 0417h	Termination event
	subevent 0000h for normal termination, nonzero for error
 0418h	Display message
	subevent 0000h for normal message, nonzero for system model ASAP
 0419h	Crash
 041Ah	Paste complete
	subevent 0000h: normal
	subevent 0001h: cancelled by user
	subevent 0002h: cancelled
 041Bh	Contention event
 041Ch	Screen switch
	subevent 0000h: forward
	subevent 0001h: back
 041Dh	Filesystem change
 041Eh	Check Focus
 041Fh	Panic

Bitfields for boost value:
Bit(s)	Description	(Table 02561)
 0	boost system VM until focus changes
 1	boost system VM on Switcher screen
 2	boost system VM until response
 3	boost system VM during clipboard activity
 4	boost system VM during print screen
 5	boost system VM during update
--------m-2C0011-----------------------------
INT 2C P - Cloaking v1.01 - "Switch_VMs_and_Call_back"
	AX = 0011h
	EBX = handle of VM to be made active
	SI:EDI -> 32-bit FAR completion procedure
Return: CF clear if successful (scheduled)
	CF set on error
Notes:	this function is only available while MS Windows is running
	the completion procedure is called with CF clear if the specified
	  VM has been made active, or with CF set on error
SeeAlso: AX=000Fh,AX=0012h
--------m-2C0012-----------------------------
INT 2C P - Cloaking v1.01 - "Query_Current_VM"
	AX = 0012h
Return: CF clear
	EBX = handle of active VM
	ESI = handle of system VM
	ECX = VM status flags (see #02562)
	EDX = shell flags (see #02563)
Note:	this function is only available while MS Windows is running in enhanced
	  mode
SeeAlso: AX=000Fh,AX=0011h,AX=0013h

Bitfields for VM status flags:
Bit(s)	Description	(Table 02562)
 0	in exclusive mode
 1	runs in background
 2	being created
 3	suspended
 4	not executable
 5	executing in protected mode
 6	contains PM application
 7	32-bit PM application
 8	called from VxD
 9	high priority background
 10	blocked on semaphore
 11	awakening
 12	has pageable V86
 13	has locked V86
 14	is scheduled
 15	idle
 16	closing

Bitfields for shell flags:
Bit(s)	Description	(Table 02563)
 2	windowed
 5	Alt-Tab reserved
 6	Alt-Esc reserved
 7	Alt-Space reserved
 8	Alt-PrtSc reserved
 9	Alt-Enter reserved
 10	Alt-PrtSc reserved
 11	PrtSc reserved
 12	polling enabled
 13	no HMA
 14	has shortcut key
 15	locked EMS handles
 16	locked XMS handles
 17	fast paste enabled
 18	locked V86 memory
 30	close-on-exit enabled
--------m-2C0013-----------------------------
INT 2C P - Cloaking v1.01 - "Issue_System_Modal_Message"