5	386MAX loaded into high memory
 6	Microchannel bus
 7	Weitek math coprocessor detected
 9	??? (also generates INT 01 on ??? and INT 03 on ???)
 11	PC/XT (thus only single 8259 interrupt controller present, DMA only
		in 1st megabyte, etc)
 13	LMLTOP= specified
 14	enable A20 control???
 15	???

Bitfields for 386MAX debugging flags 1:
Bit(s)	Description	(Table 01470)
 0	DEBUG=LED
 1	DEBUG=X67
 2	DEBUG=INV
 3	DEBUG=EMSPTED
 4	DEBUG=JMP
 5	DEBUG=CALL
 6	DEBUG=HLT
 7	DEBUG=PMR
 8	DEBUG=CR3
 9	DEBUG=CAPS or DEBUG=INT
 10	DEBUG=RC
 11	DEBUG=ROM
 12	DEBUG=XM
 13	DEBUG=SOR
 14	DEBUG=XR
 15	DEBUG=EMSERR (generate INT 01 on returning error from EMS call)

Bitfields for 386MAX debugging flags 2:
Bit(s)	Description	(Table 01471)
 0	DEBUG=ROMSWAP
 1	DEBUG=UNSHADOWROM
 2	DEBUG=COMPROM
 3	DEBUG=DPMIPHYS
 4	DEBUG=ALLROM
 5	DEBUG=VMS
 6	DEBUG=XMS (generate INT 01 on XMS calls)
 7	DEBUG=I06
 8	DEBUG=VCPI
 9	DEBUG=XDMA
 10	DEBUG=X09
 13	DEBUG=I67 (generate INT 01 on every INT 67 call)
 14	DEBUG=EVM (generate INT 01 on entering V86 mode)
 15	DEBUG=EMSSAVE or DEBUG=VDS

Bitfields for 386MAX debugging flags 3:
Bit(s)	Description	(Table 01472)
 10	DEBUG=EPM
 12	DEBUG=ABIOS
 13	DEBUG=XMSPTED
 14	DEBUG=TIME
 15	DEBUG=SCRUB

Bitfields for 386MAX feature flags 1:
Bit(s)	Description	(Table 01473)
 1	Weitek present
 2	no DPMI services
 3	NODMA
 4	TERSE
 5	NOROM
 6	NOPARITY
 8	NOFLEX (IGNOREFLEXFRAME)
 11	don't create UMBs
 12	don't backfill below video memory (NOLOW)
 13	FRAME= specified
 14	EXT= specified
 15	NOEMS, allow prior expanded memory manager to provide EMS

Bitfields for 386MAX feature flags 2:
Bit(s)	Description	(Table 01474)
 0	UNSHIFT specified (FORCEA20 disabled)
 1	NOXRAM
 2	NOSCSI specified
 3	SCREEN specified
 4	enabled EISADMA
 5	slow DMA
 6	RESETKEYB specified
 7	???
 9	TOP384
 10	???
 11	NOWARMBOOT
 12	USE= specified
 13	ROM= specified

Bitfields for 386MAX feature flags 3:
Bit(s)	Description	(Table 01475)
 0	Windows3 support enabled
 1	SHADOWROM
 2	don't compress ROM (NOCOMPROM)
 3	??? (related to PRGREG=)
 4	??? (related to PRGREG=)
 5	SHADOWRAM
 6	DOS4 specified
 7	NOLOADHIGH
 8	NOPULSE
 11	FORCEA20
 12	DMA buffer enabled
 13	NOSCRUB
 15	NOFRAME

Bitfields for 386MAX machine type:
Bit(s)	Description	(Table 01476)
 12	Amstrad
 13	Epson
 14	Zenith Data Systems
 15	"ASEM"
 16	NEC
 17	"HPRS" model codes 69h and 6Ah
 18	Dell
 19	"CA"
 20	ITT (Xtra Business Systems/Alcatel)
 21	Toshiba 5100
 22	Olivetti
 23	Quadram Quad386 (BIOS model FEh, submodel A6h)
 24	Tandy???
 25	AST 386
 26	INBOARD, ??? version
 27	INBOARD, ??? version
 28	INBOARD, ??? version
 29	"HPRS"
 30	Compaq 386
 31	JET386

Format of 386MAX control block:
Offset	Size	Description	(Table 01477)
 00h	WORD	segment of next block (FFFFh if last)
 02h	WORD	segment of previous block (FFFFh if first)
 04h 12 BYTEs	filename
 10h	WORD	resident size in paragraphs
 12h	WORD	environment size???
 14h	WORD	real prsent environment size + 1 (0000h if ENVSAVE used)
 16h  2 BYTEs	???
 18h	DWORD	initial size or SIZE=n in 386LOAD commandline
 1Ch	DWORD	SIZE=-1 ???
 20h	DWORD	SIZE= ???
 24h	BYTE	PRGREG= if specified, else FFh
 25h	BYTE	ENVREG= if specified, else FFh
 26h	BYTE	FlexFrame (00h not present, 01h present)
 27h  3 BYTEs	???
 2Ah	BYTE	GROUP= or 00h if not present
 2Bh	BYTE	???
 2Ch	WORD	PSP

Format of 386MAX high memory info record:
Offset	Size	Description	(Table 01478)
 00h	WORD	segment address of memory region
 02h	WORD	size of memory region in paragraphs
 04h	BYTE	type or flags???
		00h if locked out
		02h if EMS page frame
		04h if high RAM
		42h if ROM
 05h	BYTE	???

Format of 386MAX ROM shadowing record:
Offset	Size	Description	(Table 01479)
 00h	WORD	logical start segment of ROM??? (may be used by BlueMAX when it
		  squeezes together the ROMs to make room)
 02h	WORD	physical start segment of ROM
 04h  2 BYTEs	???
 06h	WORD	size of shadowed ROM in paragraphs
 08h  2 BYTEs	???
 0Ah	WORD	flags
		bit 15: shadowing enabled for this ROM???
		bit 14: ???
		bit 13: ???
		bit 12: ???
		bit 10: ???

(Table 01480)
Values for 386MAX memory type:
 00h	unused by EMS
 01h	DOS
 04h	page frame overlapping ROM???
 80h	high memory
 84h	page frame???
 87h	video ROM???
Note:	the type may be 00h (unused) if the 16K page is split among different
	  uses (such as ROM and high RAM)

(Table 01481)
Call 386MAX API (via OUT DX,AL) with:
	STACK: WORD value for DX
	AH = 00h unused
		Return: AH = 84h (unsupported function)
	AH = 01h get high memory information
		ES:DI -> buffer for array of high memory info records
			(see #01478)
		Return: CX = number of records placed in buffer
	AH = 02h get shadowed ROM info
		ES:DI -> buffer for array of ROM shadowing records (see #01479)
		Return: CX = number of records placed in buffer
	AH = 03h get 386MAX state
		ES:DI -> 90-byte buffer for state (see #01467)
		Return: AH = 00h (successful)
			buffer filled
	AH = 04h get memory types???
		ES:DI -> buffer for memory type info (array of bytes, one per
			16K page) (see #01480)
		Return:	CX = number of bytes placed in buffer
	AH = 05h get page table entries
		AL = A20 control (00h enable A20 first, 01h leave unchanged)
		CX = buffer size in bytes (0000h = enough for all memory from
			given start to end of memory managed by 386MAX)
		SI = first K to report (rounded down to 4K page)
		ES:DI -> buffer for returned page table entries
		Return: CX = number of bytes returned (four per 4K page)
			ES:DI buffer filled
	AH = 06h get memory speed info
		ES:DI -> buffer for memory speed records (see #01482)
		Return: AH = 00h (successful)
			CX = number of bytes placed in buffer
		Note:	this function can take over a second to execute
	AH = 07h map/unmap multiple handle pages
		DX = EMS handle (on stack)
		STACK: DWORD -> EMS mapping record
		Return:	AH = status (00h,80h,83h,8Ah,8Bh)
		Format of EMS mapping record:
		Offset	Size	Description
		 00h	WORD	function
				0000h use physical page numbers
				0001h use segment addresses
		 02h	WORD	EMS handle
		 04h	WORD	number of mapping entries following
		 06h 2N WORDs	logical page number and physical page/segment
				logical page FFFFh means unmap physical page
		SeeAlso: INT 67/AH=50h
	AH = 08h "EMM2_GOREAL" check whether possible to disable 386MAX
		AL = ??? (00h or nonzero)
		Return: AH = status (00h OK, A4h not possible at this time)
		Note:	if AL=00h, this function always returns success
	AH = 09h toggle Bit Flags 1 flags
		BX = bitmask of bit flags 1's flags to toggle (see #01468)
		Return: AH = 00h (successful)
		Note:	enables A20 first
	AH = 0Ah toggle Debugging Flags 1 flags
		BX = bitmask of Debugging Flags 1's bits to toggle (see #01470)
		Return: AH = 00h (successful)
		Notes:	enables A20 first
			does ??? if bit 3 on after specified bits are toggled
	AH = 0Bh toggle Debugging Flags 2 flags
		BX = bitmask of Debugging Flags 2's bits to toggle (see #01471)
		Return: AH = 00h (successful)
		Note:	enables A20 first
	AH = 0Ch toggle feature flags 3
		BX = bitmask of feature flags 3's bits to toggle (see #01475)
		Return: AH = 00h (successful)
		Note:	enables A20 first
	AH = 0Dh specify 386MAX high-memory location
		BX = segment address of high-memory real-mode portion of 386MAX
		CX = current segment of real-mode stub???
		Return: AH = status (00h successful)
			???
	AH = 0Eh CRT controller register virtualization
		AL = subfunction
		    00h allow access to CRTC I/O ports 03B4h/03B5h, 03D4h/03D5h
		    01h trap accesses to CRTC I/O ports
	AH = 0Fh reboot system
		Return: never
	AH = 10h unused
		Return: AH = 84h (unsupported function)
	AH = 11h get high memory information
		ES:DI -> 96-byte buffer for high memory info
		Return: AH = 00h (successful)
			ES:DI buffer filled
		Notes:	each byte in buffer contains bit flags for a 4K page in
			  the A000h-FFFFh region
				bit 0: page is writeable
				bit 1: physical address same as linear address
				bit 2: EMS page frame
				bit 6: page is part of the QPMS window
			this function can take over a second to execute,
			  because it does a 128K read for each page in an
			  attempt to flush any RAM cache the system may have
	AH = 12h shadow RAM mapping
		AL = subfunction
		    00h unshadow ROMs (except page FFh if NOWARMBOOT set)
		    01h map shadow RAM into ROM regions???
		Return: AH = 00h (successful) if AL=00h or 01h
			AH = 8Fh otherwise
	AH = 13h shadow RAM page protection
		AL = subfunction
		    00h set all shadowed ROM 4K pages to read-only
		    01h set all shadowed ROM 4K pages to read-write
		Return: AH = 00h (successful) if AL=00h or 01h
			AH = 8Fh otherwise
	AH = 14h get Programmable Option Select info???
		ES:DI -> 54-byte buffer for POS data???
		Return: AH = 00h if successful
			AH = A4h on error
		Note:	the buffer consists of nine 6-byte fields; the first
			  eight for slots 1-8, the last for the system board
	AH = 15h ???
		???
		Return: ???
	AH = 16h get 386MAX memory usage screen
		ES:DI -> buffer for memory info display
		CX = size of buffer in bytes
		Return:	ES:DI buffer filled with '$'-terminated string (if
				large enough to hold entire usage screen)
		Note:	the screen is 0303h bytes in v7.00
	AH = 17h Windows 3 startup/termination
		AL = subfunction
		    00h Windows3 initializing
			DX (on stack) = Windows startup flags
			DI = Windows version number (major in upper byte)
			ES:BX = 0000h:0000h
			DS:SI = 0000h:0000h
			Return: CX = 0000h if OK for Windows to load
				   <> 0 if Windows should not load
				ES:BX -> startup info structure
				DS:SI -> Virtual86 mode enable/disable callback
		    01h Windows3 terminating
			ES:BX -> ???
			DX (on stack) = Windows exit flags
			Return: ???
	AH = 18h QPMS (Qualitas Protected Memory Services)
		AL = subfunction
		    00h get QPMS configuration
			Return: BX = starting segment of QPMS memory window
				CX = number of 4K pages reserved for QPMS???
				DX = number of 4K pages in QPMS window???
		    01h map QPMS memory page???
			BX = 4K page number within memory reserved for QPMS???
			CL = 4K page number within QPMS memory window???
		    02h mark all QPMS memory read-only
		    03h mark all QPMS memory read-write
		Return: AH = status (00h,8Ah,8Bh,8Fh)
	AH = 19h get linear address for physical address
		EDX = physical address (low word on stack)
		Return: AH = status
			    00h successful
				EDX = linear address at which physical address
					may be accessed
			    8Bh physical address currently not addressable
		Note:	enables A20 first
	AH = 1Ah set page table entry
		EDX = new page table entry (low word on stack)
		ESI = linear address of page to map (bits 0-11 clear)
		Return: AH = status (00h,8Bh)
		Note:	enables A20 first
	AH = 1Bh get ???
		Return: AH = status
			BX = ???
			CX = number of ???
			EDX = physical address of ???
	AH = 1Ch get original interrupt vector
		AL = interrupt vector (00h-7Fh)
		Return: AH = 00h (successful)
			EDX = original vector before 386MAX loaded (segment in
				high word, offset in low word)
		Note:	no range checking is performed; requests for INTs 80h-
			  FFh will return random values
	AH = 1Dh display string???
		SI = ???
		Return: AH = 00h (successful)
			???
		Note:	this function appears to be broken in v7.00
	AH = 1Eh get memory info
		ES:DI -> memory info (see #01483)
		Return: ???
	AH = 1Fh get DPMI host information
		Return: AX = 0000h if successful
			BX = DPMI flags (see #03152 at INT 31/AX=0400h)
			CL = CPU type (02h = 80286, 03h = 80386, etc.)
			DX = DPMI ver supported (DH=major, DL=2-digit minor)
			SI = ???
			ES???:DI -> ???
		Note:	NOP if NODPMI switch specified
	AH = 20h (v7.00) get ???
	    AL = index of ???
	    Return: EDX = ??? for specified ???
	AH = 21h (v7.00) STACKS support