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Format of Phar Lap configuration buffer

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Offset Size Description

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 string

18h

DWORD

beta flag
00h = normal release
11h = beta release

1Ch

DWORD

processor
3 = 386
4 = 486

20h

DWORD

coprocessor
4 = none
6 = 287
7 = 387/486

24h

DWORD

Weitek coprocessor
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)