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Category: memory management
Flags: Undocumented function


	AX = 2780h
	CL = 04h (module: Domains)
	CH = subfunction
	    00h "F_DAlloc" create new domain
	    01h "F_DFree" delete a domain
	    02h "X_DomHandleGetMy" get current domain handle
	    03h "F_DSet" switch to another domain
	    04h "Z_HandlerSWInt" install software-interrupt handler
	    05h "Z_HandlerPageFault" install page-fault handler
	    06h "Z_HandlerIOEx" install I/O exception handler
	    07h "Z_HandlerGenEx" install general exception handler
	    08h "Z_HandlerHWInt" install hardware interrupt handler
	    09h "Z_IOBitmapGet" get current domain's I/O bitmap entry
	    0Ah "Z_IOBitmapSet" set current domain's I/O bitmap entry
	    0Bh "Z_IOBitmapDomGet" get domain's I/O bitmap entry
	    0Ch "Z_IOBitmapDomSet" set domain's I/O bitmap entry
	    0Dh "Z_DomMemRead" read memory in another domain
	    0Eh "Z_DomMemWrite" write memory in another domain
	    0Fh "Z_PtblDomGet" read domain's page table
	    10h "Z_PtblDomSet" write domain's page table
	    11h "Z_InstanceSet" register instanced memory
	    12h "X_DomNProcessesGet" get number of processes in domain
	    13h "X_DomSuspend" suspend a domain
	    14h "Z_DomUnsuspend" resume execution of a domain
	    15h "Z_DomFork" make a copy of the current domain
	    16h "Z_DomTerm" terminate domain and all processes in it
	    17h "Z_HandlerUnlink" remove a handler
	    18h "Z_HandlerHWIntDflt" install default hardware interrupt handler
	    19h "Z_HandlerVHWInt" install virtual hardware interrupt handler
	    1Ah "Z_HandlerVHWIntDflt" install default virtual hware int handler
	    1Bh "Z_HandlerSwapIn" install swap-in handler
	    1Ch "Z_HandlerSwapOut" install swap-out handler
	    1Dh "Z_EndOfInterrupt" signal EOI
	    1Eh ???
	    1Fh "Z_HandlerPCreate" install process-creation handler
	    20h "Z_HandlerPTerm" install process-termination handler
	    21h "Z_DomRootProcessGet" get domain's root process' handle
	    22h "F_DForeground" domain has just switched to foreground
	    23h "F_DBackground" domain has just switched to background
	    24h "F_MapHMA" map domain's HMA
	    25h "F_AddInstData" add DOS instance data
	    26h "X_DomMemFreeGet" get free memory in a domain
	    27h "X_DomMemUsedGet" get memory used by current domain
	    28h "Z_DomMemMaxGet" get per-domain memory limit
	    29h "Z_DomMemMaxSet" set per-domain memory limit
	    2Ah "F_ReflectInt21" protected-mode INT 21 support
	    2Bh "Z_DomHandleGet" get domain for a process
	    2Ch ???
	    2Dh ???
	    2Eh ???
	    2Fh ???
	    30h ???
	    31h ???
	    32h ???
Return: CX = status (most subfunctions)
	(E)AX and/or (E)BX contain return values, depending on function
Notes:	called by DPMS.EXE and EMM386.EXE
	this API is only available if AX=12FFh/BX=0EDCh returns successfully;
	  because the request is handled on the initial trap to the memory
	  manager caused by INT instructions, this API must be invoked with
	  an actual INT 2F instruction instead of some simulation such as a
	  far call to the address in the interrupt vector table
SeeAlso: AX=12FFh/BX=0EDCh,AX=2780h/CL=01h,AX=2780h/CL=02h,AX=2780h/CL=03h

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  Copyright 2000   by Ralf Brown     Updated Jul 2000