Int 21/AX=2526h

Phar Lap 386/DOS-Extender - GET CONFIGURATION INFORMATION

AX = 2526h
???

Return:
???

Notes: Details are not yet available. This function takes a pointer to the configuration buffer (see #01365) and a poitner to a BYTE as arguments


Format of Phar Lap configuration buffer:

Offset  Size    Description     (Table 01365)
00h    DWORD   flags 1 (see #01366)
04h    DWORD   flags 2 (unused through v5.0)
08h    DWORD   flags 3 (unused through v5.0)
0Ch    DWORD   386|DOS-Extender major version
10h    DWORD   386|DOS-Extender minor version
14h    DWORD   first letter of text after minor version number in version str
18h    DWORD   beta flag (00h normal release, 01h beta release)
1Ch    DWORD   processor (3 = 386, 4 = 486)
20h    DWORD   coprocessor (4 = none, 6 = 287, 7 = 387/486)
24h    DWORD   Weitek coprocessor flag (0 = none, 1 = present)
28h    DWORD   machine type (0 = IBM PC compatible, 1 = NEC 9800 series)
2Ch    DWORD   machine class
IBM:
Bus type (0=ISA, 1=MCA, 2=XT, 3=EISA)
NEC:
0=normal mode, 1=high-res mode
30h    DWORD   VCPI flag (0 = none, 1 = present)
34h    DWORD   -WEITEK/-1167 switch (0 = AUTO, 1 = ON, 2 = OFF)
38h    DWORD   -MINREAL setting
3Ch    DWORD   -MAXREAL setting
40h    DWORD   -MINIBUF setting
44h    DWORD   -MAXIBUF setting
48h    DWORD   size in bytes of DOS call data buffer
4Ch    DWORD   number of interrupt stacks (-NISTACK)
50h    DWORD   interrupt stack size (-ISTKSIZE)
54h    DWORD   -REALBREAK setting
58h    DWORD   -CALLBUFS
5Ch    DWORD   -HWIVEC
60h    DWORD   -PRIVEC
64h    DWORD   -INTMAP
68h    DWORD   -PRIMAP
6Ch    DWORD   VCPI:
Master 8259 interrupt vector base (IRQ0 mapping)
70h    DWORD   VCPI:
Slave 8259 interrupt vector base (IRQ8 mapping)
74h    DWORD   BIOS print screen interrupt vector (0 if NEC)
78h    DWORD   -EXTLOW setting
7Ch    DWORD   -EXTHIGH setting
80h    DWORD   lowest physical extended-memory address allocatable
84h    DWORD   highest physical extended-memory address allocatable + 1
88h    DWORD   special memory's physical base address (00000000h if none)
8Ch    DWORD   special memory size in bytes (00000000h if none)
90h    DWORD   -MAXVCPIMEM setting
94h    DWORD   -VSCAN
98h    DWORD   -SWAPCHK (0 = OFF, 1 = ON, 2 = FORCE, 3 = MAX)
9Ch    DWORD   -CODESIZE setting
A0h    DWORD   minimum swap file size (-MINSWFSIZE)
A4h    DWORD   maximum swap fiel size (-MAXSWFSIZE)
A8h    DWORD   page replacement policy (0 = LFU, 1 = NUR)
ACh    DWORD   number of GDT entries (-NGDTENT)
B0h    DWORD   number of LDT entries (-NLDTENT)
B4h    DWORD   program's privilege level (0-3)
---386|DOS-Extender v3.0+ ---
B8h    DWORD   -LOCKSTACK setting
BCh    DWORD   -MAXEXTMEM
C0h    DWORD   -MAXXMSMEM
C4h    DWORD   -MAXPGMMEM
C8h    DWORD   -DATATHRESHOLD
CCh    DWORD   virtual memory manager flag (0 = not present, 1 = present)
D0h    DWORD   Cyrix coprocessor flag (0 = no Cyrix EMC387, 1 = present)
D4h    DWORD   -CYRIX setting (0 = AUTO, 1 = ON, 2 = OFF)
D8h    DWORD   DPMI flag (0 = not present, 1 = present)
DCh    DWORD   DPMI major version
E0h    DWORD   DPMI minor version
E4h    DWORD   DPMI capabilities flags (see #01367)
E8h    DWORD   VCPI major version
ECh    DWORD   VCPI minor version
F0h    WORD    VCPI:
IRQ0-7 physical base interrupt vector
F2h    WORD    VCPI:
IRQ8-15 physical base interrupt vector
F4h    DWORD   XMS flag (0 = none, 1 = present)
F8h    DWORD   XMS major version
FCh    DWORD   XMS minor version
100h    WORD    application's CS selector
102h    WORD    application's DS selector
104h    WORD    application's PSP selector
106h    WORD    application's environment selector
108h    WORD    selector mapping entire first megabyte
10Ah    WORD    selector mapping text video memory
10Ch    WORD    selector mapping video memory (text for IBM, graphics for NEC)
10Eh    WORD    selector mapping Weitek address space, 0000h if not present
110h    WORD    selector mapping Cyrix EMC387 address space, 0000h if none
112h    WORD    reserved (0)
114h    DWORD   real-mode FAR entry point to call to switch to protected mode
with no saved context
118h    DWORD   size of LDT in bytes
---386|DOS-Extender v5.0+ ---
11Ch    DWORD   Windows flag (0 = not present, 1 = Windows present)
120h    DWORD   Windows major version
124h    DWORD   Windows minor version
128h    DWORD   Windows mode (0 = real/standard, 1 = enhanced)
12Ch    DWORD   OS/2 flag (0 = not present, 1 = OS/2 present)
130h    DWORD   OS/2 major version
134h    DWORD   OS/2 minor version
138h 50 DWORDs  reserved (0)

Bitfields for flags 1:

Bit(s)  Description     (Table 01366)
0      -NOPAGE specified
1      -A20 specified
2      -VDISK specified
3      -XT specified
4      -AT specified
5      -MCA specified
6      -EISA specified
7      -NORMRES specified (NEC only)
8      -HIGHRES specified (NEC only)
9      set if -SWFGROW1ST, clear if -NOSWFGROW1ST
10     -NOVM specified
11     -SAVEREGS specified
12     unused (clear)
13     -NOVCPI specified
14     -NOMUL specified
15     -NOBMCHK specified
16     -NOSPCLMEM or -NOBIM
17     -NOPGEXP specified
18     -SWAPDEFDISK specified
---v3.0+ ---
19     -SAVEINTS specified
20     -NOLOAD specified
21     -PAGELOG specified
22     -OPENDENY specified
23     -ERRATA17 specified
---v4.1+ ---
24     -NESTDPMI specified
25     -NONESTDPMI specified
26     -NODPMI specified
27     -NOPCDWEITEK specified
---v4.2+ ---
28     -WININT21 specified

Bitfields for DPMI capabilities flags:

Bit(s)  Description     (Table 01367)
0      paging supported
1      physical device mapping
2      conventional memory mapping
3      exceptions restartable

Category: DOS Extenders - Int 21h - P

Interrups Categories Contents