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<HTML>
<HEAD>
<TITLE>Int 21/AX=4402h
</TITLE>
<META NAME="Description" CONTENT="
Int 21/AX=4402h - Qualitas 386MAX v6.00+ - IOCTL INPUT - GET STATE -
AX = 4402h
BX = file handle for device 386MAX$$
CX = number of bytes to read
DS:DX - BYTE 03h followed by 386MAX state buffer (see #01467)
Return: CF clear if successful
buffer at DS:DX+1 filled
AX = number of bytes actually copied
CF set on error
AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes: if the value given in CX is less than the size of the state record
">
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<h2>Int 21/AX=4402h
</h2>
</center><p>
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<td>
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<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
<h3><font color=#C00040>Qualitas 386MAX v6.00+ - IOCTL INPUT - GET STATE</font></h3>
<PRE>
AX = 4402h
BX = file handle for device "386MAX$$"
CX = number of bytes to read
DS:DX -> BYTE 03h followed by 386MAX state buffer <a href="rb-2833.htm#Table1467" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1467">(see #01467)</a><br>
<p><b>Return:</b><br>CF clear if successful
buffer at DS:DX+1 filled
AX = number of bytes actually copied
CF set on error
AX = error code (01h,05h,06h,0Dh) <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-0000.htm \n\nThis file was not retrieved by Teleport Pro, because it was unavailable, or its retrieval was aborted, or the project was stopped too soon. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-0000.htm#Table0'" tppabs="http://www.ctyme.com/intr/rb-0000.htm#Table0"></a>(see #01680 at AH=59h/BX=0000h)
</PRE>
<p><b>Notes:</b>
If the value given in CX is less than the size of the state record
(5Ah for v6.01, 66h for v7.00), only a partial state record will be
returned.
The state is 40h bytes for 386MAX (actually ASTEMM) v2.20 ("386MAX$$"
did not exist yet, use "QMMXXXX0" and then "EMMXXXX0" instead) and
56h bytes for v5.11..
To invoke 386MAX API functions, push DX onto the stack, load DX with
the word at offset 25h in the returned state, load all other
registers as needed for the desired function, and execute an
OUT DX,AL or OUT DX,AX; DX will be set to the pushed value on return
if it is not otherwise modified by the API function. For safety,
in case a function is not supported or 386MAX is not present, SP
should be saved and restored around the API call..
Windows 3.1 Standard mode, LAN Manager, and Windows for Workgroups all
use the 386MAX API; LAN Manager and Windows for Workgroups reportedly
make some calls incorrectly
<p><b>See Also:</b>
<a href="rb-2833.htm" tppabs="http://www.ctyme.com/intr/rb-2833.htm">AX=4403h/SF=03h"386MAX"</a> - <a href="rb-7414.htm" tppabs="http://www.ctyme.com/intr/rb-7414.htm">INT 67/AH=3Fh</a>
<PRE>
<p>
Format of 386MAX v6.01+ state:
<a name=table1467></a>
Offset Size Description (Table 01467)
-1 BYTE (call) 03h
00h 6 BYTEs signature "386MAX"
06h 4 BYTEs version string "N;NN" or "N.NN" (i.e. "6;01" for v6.01)
(';' by default; apparently changed to a period when 386MAX
has linked high RAM into DOS's memory chain)
0Ah WORD segment of low-memory portion of 386MAX.SYS
0Ch 2 BYTEs ???
0Eh WORD segment of ??? memory block or 0000h
10h WORD bit flags 1 <a href="rb-2833.htm#Table1468" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1468">(see #01468)</a>
12h WORD starting address of video memory in KB
14h 2 BYTEs ???
16h WORD total high DOS memory in KB
18h 2 BYTEs ???
1Ah WORD available shared memory in KB
1Ch WORD KBytes extended memory used by 386MAX
1Eh 2 BYTEs ???
20h WORD total extended memory in KB
22h WORD IO port to write (OUT DX,AL) to invoke 386MAX INT 15 functions
24h WORD IO port to write (OUT DX,AL) to invoke 386MAX API functions
<a href="rb-2833.htm#Table1481" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1481">(see #01481)</a>
26h WORD ??? (depends on DOS version)
28h WORD size of ??? in paragraphs
2Ah DWORD machine type <a href="rb-2833.htm#Table1476" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1476">(see #01476)</a>
2Eh DWORD -> first DOS memory control block
32h WORD system configuration flags <a href="rb-2833.htm#Table1469" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1469">(see #01469)</a>
34h WORD debugging flags 1 <a href="rb-2833.htm#Table1470" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1470">(see #01470)</a>
36h WORD debugging flags 2 <a href="rb-2833.htm#Table1471" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1471">(see #01471)</a>
38h 2 BYTEs ???
3Ah WORD segment of first MCB in high memory chain
3Ch WORD feature flags 1 <a href="rb-2833.htm#Table1473" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1473">(see #01473)</a>
3Eh WORD feature flags 2 <a href="rb-2833.htm#Table1474" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1474">(see #01474)</a>
40h WORD feature flags 3 <a href="rb-2833.htm#Table1475" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1475">(see #01475)</a>
42h WORD segment of first 386MAX control block??? <a href="rb-2833.htm#Table1477" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1477">(see #01477)</a>
44h WORD amount of memory to report available on INT 15/AH=88h
46h 4 BYTEs ???
4Ah WORD number of K at start of address space swapped with fast
extended memory (SWAP= parameter)
4Ch 2 BYTEs ???
4Eh WORD segment address of ???
50h WORD debugging flags 3 <a href="rb-2833.htm#Table1472" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1472">(see #01472)</a>
52h DWORD old INT 21h
56h DWORD pointer to 386MAX's EMS (INT 67h) handler
---386MAX v7.00---
5Ah DWORD KB of extended memory managed by 386MAX
5Eh DWORD bytes of extended memory (EXT= parameter)
62h 4 BYTEs ???
<p>
Bitfields for 386MAX bit flags 1:
<a name=table1468></a>
Bit(s) Description (Table 01468)
1 ???
2 allow A20 to be enabled/disabled???
3 ??? (cleared by calling INT 67 functions or starting MSWindows)
4 high RAM present???
5 386MAX in AUTO mode
6 386MAX enabled
7 386MAX is providing EMS services
8 ??? (affects API function 08h)
9 A20 gate closed (A20 disabled) (see INT 15/AX=2402h)
10 Weitek support enabled
11 ???
12 ROMs not shadowed???
13 QPMS has been used
14 ???
15 ???
<p>
Bitfields for 386MAX system configuration flags:
<a name=table1469></a>
Bit(s) Description (Table 01469)
1 ROM compressed???
3 ???
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 ???
<p>
Bitfields for 386MAX debugging flags 1:
<a name=table1470></a>
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)
<p>
Bitfields for 386MAX debugging flags 2:
<a name=table1471></a>
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
<p>
Bitfields for 386MAX debugging flags 3:
<a name=table1472></a>
Bit(s) Description (Table 01472)
10 DEBUG=EPM
12 DEBUG=ABIOS
13 DEBUG=XMSPTED
14 DEBUG=TIME
15 DEBUG=SCRUB
<p>
Bitfields for 386MAX feature flags 1:
<a name=table1473></a>
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
<p>
Bitfields for 386MAX feature flags 2:
<a name=table1474></a>
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
<p>
Bitfields for 386MAX feature flags 3:
<a name=table1475></a>
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
<p>
Bitfields for 386MAX machine type:
<a name=table1476></a>
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
<p>
Format of 386MAX control block:
<a name=table1477></a>
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
<p>
Format of 386MAX high memory info record:
<a name=table1478></a>
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 ???
<p>
Format of 386MAX ROM shadowing record:
<a name=table1479></a>
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
<p><b>bit 15:</b><br>Shadowing enabled for this ROM???
<p><b>bit 14:</b><br>???
<p><b>bit 13:</b><br>???
<p><b>bit 12:</b><br>???
<p><b>bit 10:</b><br>???
<p>
<a name=table1480></a>
(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???
</PRE>
<p><b>Note:</b>
The type may be 00h (unused) if the 16K page is split among different
uses (such as ROM and high RAM)
<PRE>
<p>
<a name=table1481></a>
(Table 01481)
Call 386MAX API (via OUT DX,AL) with:.
<p><b>STACK:</b><br>WORD value for DX.
AH = 00h unused
<p><b>Return:</b><br>AH = 84h (unsupported function).
AH = 01h get high memory information
ES:DI -> buffer for array of high memory info records
<a href="rb-2833.htm#Table1478" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1478">(see #01478)</a>
<p><b>Return:</b><br>CX = number of records placed in buffer.
AH = 02h get shadowed ROM info
ES:DI -> buffer for array of ROM shadowing records <a href="rb-2833.htm#Table1479" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1479">(see #01479)</a>
<p><b>Return:</b><br>CX = number of records placed in buffer.
AH = 03h get 386MAX state
ES:DI -> 90-byte buffer for state <a href="rb-2833.htm#Table1467" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1467">(see #01467)</a>
<p><b>Return:</b><br>AH = 00h (successful)
buffer filled.
AH = 04h get memory types???
ES:DI -> buffer for memory type info (array of bytes, one per
16K page) <a href="rb-2833.htm#Table1480" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1480">(see #01480)</a>
<p><b>Return:</b><br>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
<p><b>Return:</b><br>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 <a href="rb-2833.htm#Table1482" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1482">(see #01482)</a>
<p><b>Return:</b><br>AH = 00h (successful)
CX = number of bytes placed in buffer
</PRE>
<p><b>Note:</b>
This function can take over a second to execute.
AH = 07h map/unmap multiple handle pages
DX = EMS handle (on stack)
<PRE>
<p><b>STACK:</b><br>DWORD -> EMS mapping record
<p><b>Return:</b><br>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
</PRE>
<p><b>See Also:</b>
INT 67/AH=50h.
AH = 08h "EMM2_GOREAL" check whether possible to disable 386MAX
AL = ??? (00h or nonzero)
<PRE>
<p><b>Return:</b><br>AH = status (00h OK, A4h not possible at this time)
</PRE>
<p><b>Note:</b>
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 <a href="rb-2833.htm#Table1468" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1468">(see #01468)</a>
<PRE>
<p><b>Return:</b><br>AH = 00h (successful)
</PRE>
<p><b>Note:</b>
Enables A20 first.
AH = 0Ah toggle Debugging Flags 1 flags
BX = bitmask of Debugging Flags 1's bits to toggle <a href="rb-2833.htm#Table1470" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1470">(see #01470)</a>
<PRE>
<p><b>Return:</b><br>AH = 00h (successful)
</PRE>
<p><b>Notes:</b>
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 <a href="rb-2833.htm#Table1471" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1471">(see #01471)</a>
<PRE>
<p><b>Return:</b><br>AH = 00h (successful)
</PRE>
<p><b>Note:</b>
Enables A20 first.
AH = 0Ch toggle feature flags 3
BX = bitmask of feature flags 3's bits to toggle <a href="rb-2833.htm#Table1475" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1475">(see #01475)</a>
<PRE>
<p><b>Return:</b><br>AH = 00h (successful)
</PRE>
<p><b>Note:</b>
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???
<PRE>
<p><b>Return:</b><br>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
<p><b>Return:</b><br>Never.
AH = 10h unused
<p><b>Return:</b><br>AH = 84h (unsupported function).
AH = 11h get high memory information
ES:DI -> 96-byte buffer for high memory info
<p><b>Return:</b><br>AH = 00h (successful)
ES:DI buffer filled
</PRE>
<p><b>Notes:</b>
Each byte in buffer contains bit flags for a 4K page in
the A000h-FFFFh region
<PRE>
<p><b>bit 0:</b><br>Page is writeable
<p><b>bit 1:</b><br>Physical address same as linear address
<p><b>bit 2:</b><br>EMS page frame
<p><b>bit 6:</b><br>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???
<p><b>Return:</b><br>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
<p><b>Return:</b><br>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???
<p><b>Return:</b><br>AH = 00h if successful
AH = A4h on error
</PRE>
<p><b>Note:</b>
The buffer consists of nine 6-byte fields; the first
eight for slots 1-8, the last for the system board.
AH = 15h ???
???
<PRE>
<p><b>Return:</b><br>???.
AH = 16h get 386MAX memory usage screen
ES:DI -> buffer for memory info display
CX = size of buffer in bytes
<p><b>Return:</b><br>ES:DI buffer filled with '$'-terminated string (if
large enough to hold entire usage screen)
</PRE>
<p><b>Note:</b>
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
<PRE>
<p><b>Return:</b><br>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
<p><b>Return:</b><br>???.
AH = 18h QPMS (Qualitas Protected Memory Services)
AL = subfunction
00h get QPMS configuration
<p><b>Return:</b><br>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
<p><b>Return:</b><br>AH = status (00h,8Ah,8Bh,8Fh).
AH = 19h get linear address for physical address
EDX = physical address (low word on stack)
<p><b>Return:</b><br>AH = status
00h successful
EDX = linear address at which physical address
may be accessed
8Bh physical address currently not addressable
</PRE>
<p><b>Note:</b>
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)
<PRE>
<p><b>Return:</b><br>AH = status (00h,8Bh)
</PRE>
<p><b>Note:</b>
Enables A20 first.
AH = 1Bh get ???
<PRE>
<p><b>Return:</b><br>AH = status
BX = ???
CX = number of ???
EDX = physical address of ???.
AH = 1Ch get original interrupt vector
AL = interrupt vector (00h-7Fh)
<p><b>Return:</b><br>AH = 00h (successful)
EDX = original vector before 386MAX loaded (segment in
high word, offset in low word)
</PRE>
<p><b>Note:</b>
No range checking is performed; requests for INTs 80h-
FFh will return random values.
AH = 1Dh display string???
SI = ???
<PRE>
<p><b>Return:</b><br>AH = 00h (successful)
???
</PRE>
<p><b>Note:</b>
This function appears to be broken in v7.00.
AH = 1Eh get memory info
ES:DI -> memory info <a href="rb-2833.htm#Table1483" tppabs="http://www.ctyme.com/intr/rb-2833.htm#Table1483">(see #01483)</a>
<PRE>
<p><b>Return:</b><br>???.
AH = 1Fh get DPMI host information
<p><b>Return:</b><br>AX = 0000h if successful
BX = DPMI flags <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-0000.htm \n\nThis file was not retrieved by Teleport Pro, because it was unavailable, or its retrieval was aborted, or the project was stopped too soon. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-0000.htm#Table0'" tppabs="http://www.ctyme.com/intr/rb-0000.htm#Table0"></a>(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 -> ???
</PRE>
<p><b>Note:</b>
NOP if NODPMI switch specified.
AH = 20h (v7.00) get ???
AL = index of ???
<PRE>
<p><b>Return:</b><br>EDX = ??? for specified ???.
AH = 21h (v7.00) STACKS support
AL = 00h get STACKS parameters
<p><b>Return:</b><br>BX = ??? (0060h for v7.00)
CX = number of stacks for hardware interrupts
DX = size of each stack in bytes
SI = ??? (low and high bytes are separate values)
DI = ??? (low and high bytes are separate values)
low byte = logical page number set by subfn 02h
ES = ???
AL = 01h set ??? "EMM2_DSTKS"
EBX = ???
ECX = ???
AL = 02h set ???
BL = logical page number for ??? (00h-03h)
<p><b>Return:</b><br>AH = status (00h,8Ah).
AH = 22h (v7.00) call ??? for every load module
AL = which function to call
00h call ???
else call ????
<p><b>Return:</b><br>AH = 00h
</PRE>
<p><b>Note:</b>
If AL=00h, calls the protected-mode function pointed at by
the DWORD at offset 22h from the start of each module installed
by a LOAD= directive; if AL<>00h, it calls the function
pointed at by the DWORD at offset 28h of the load module.
AH = 23h (v7.00) ???
AL = 00h set ???
BL = ???
<PRE>
<p><b>Return:</b><br>AH = 00h or unchanged (depending on ???)
AL = 01h set ???
BL = ???
BH = ???
CX = ???
DX = ??? (on top of stack)
<p><b>Return:</b><br>AH = status (00h if successful, 8Fh once table full)
</PRE>
<p><b>Note:</b>
This call adds one entry to an internal table on each
call, until the table is full
AL = 02h get ???
CX = size of buffer
ES:DI -> buffer for ??? (60 bytes total data)
<PRE>
<p><b>Return:</b><br>CX = number of bytes actually returned
</PRE>
<p><b>Note:</b>
Returns the array storing the values set with AX=2301h
Format of one entry in array:
Offset Size Description
00h BYTE ??? (BL from subfn 01h)
01h WORD ??? (CX from subfn 01h)
03h BYTE ??? (BH from subfn 01h)
04h WORD ??? (DX from subfn 01h)
AL = 03h set ??? name/path
ES:DI -> buffer containing ASCIZ ???
AL = 04h get ???
ES:DI -> buffer for ASCIZ ???
<p><b>Note:</b>
The ASCIZ string for subfunctions 03h and 04h does not appear
to be used by 386MAX, and may serve merely for communication
between two other Qualitas programs.
AH = 24h (v7.00) high memory control
AL = 00h get high memory state
<PRE>
<p><b>Return:</b><br>BX = current state
00h high memory removed from DOS memory chain
01h high memory included in DOS memory chain
AL = 01h set high memory state
BX = new state
00h high memory removed from DOS memory chain
01h high memory included in DOS memory chain
else
<p><b>Return:</b><br>??? (error, but return varies according to ???).
AH = 25h (v7.00) remove high RAM from DOS memory chain.
AH = 26h (v7.00) ???
BX = ???
CX = ???
SI = ???
DI = ???
<p><b>Return:</b><br>AH = status
BX = ???
CX = ???.
AH = 27h (v7.00) ???
AL = 00h get ???
<p><b>Return:</b><br>BX = number of paragraphs for ???
AL = 01h ???
BX = ???
ES??? = ???
AL = 02h ???
???
AL = 03h ???
CX = ???
DX = ???
ES??? = ???
<p><b>Return:</b><br>???.
AH = 28h (v7.00) get ???
<p><b>Return:</b><br>AH = status (00h,8Fh) (see #03648 at INT 67/AH=40h)
if AH=00h,
CX = ???
DX = ???.
AH = 29h (v7.00) get ???
<p><b>Return:</b><br>AX = ???.
AH = 40h-5Dh EMS services (see INT 67/AH=40h, etc.).
AH = DEh VCPI services (see INT 67/AX=DE00h, etc.)<br>
<p><b>Return:</b><br>AH = status (as for EMS INT 67 calls)
00h successful
80h internal error
81h hardware malfunction
83h invalid handle
84h undefined function
8Ah invalid logical page nuber
8Bh illegal physical page number
8Fh undefined subfunction
A4h access denied
etc.
STACK popped (value placed in DX if no specific return value for DX)
<p>
Format of 386MAX memory speed record:
<a name=table1482></a>
Offset Size Description (Table 01482)
00h DWORD page table entry for 4K page
04h WORD number of microticks (840ns units) required for REP LODSD of
entire 4K page
<p>
Format of 386MAX memory info [array]:
<a name=table1483></a>
Offset Size Description (Table 01483)
00h DWORD linear start address
04h DWORD size in bytes
08h WORD XMS handle (if next byte = 04h)
??? (if next byte = 05h)
??? (if next byte = 06h)
??? (if next byte = 13h)
??? (if next byte = 14h)
??? (if next byte = 15h)
??? (if next byte = 23h)
??? (if next byte = 24h)
??? (if next byte = 26h)
else unused
0Ah BYTE type
00h = ???, 01h = VDISK,
02h = INT 15h extended memory, 03h = ??? extended,
04h = XMS handle's memory, 05h = ???, 06h = ???, 07h = ???,
08h = ???, 09h = ???, 0Ah = ???, 0Bh = ???,
11h = ???, 12h = ???, 14h = ???, 15h = ???,
19h = ???, 1Ah = ???, 1Bh = ???,
1Ch = ???, 1Dh = ???, 1Eh = ???, 1Fh = ???,
20h = ???, 21h = ???, 23h = ???, 24h = ???,
26h = ???
0Bh BYTE ??? (00h for types 00h-03h, 07h-0Bh, 19h-21h;
80h for types 04h/13h-15h/23h-26h;
??? for type 05h)
</PRE>
<p>
<b>Category: <a href="cat-024.htm" tppabs="http://www.ctyme.com/intr/cat-024.htm">
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