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Format of 386MAX v6.01+ state

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Offset Size Description

-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 (see #01468)

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 (see #01481)

26h

WORD

??? (depends on DOS version)

28h

WORD

size of ??? in paragraphs

2Ah

DWORD

machine type (see #01476)

2Eh

DWORD

first DOS memory control block

32h

WORD

system configuration flags (see #01469)

34h

WORD

debugging flags 1 (see #01470)

36h

WORD

debugging flags 2 (see #01471)

38h

2 BYTE

???

3Ah

WORD

segment of first MCB in high memory chain

3Ch

WORD

feature flags 1 (see #01473)

3Eh

WORD

feature flags 2 (see #01474)

40h

WORD

feature flags 3 (see #01475)

42h

WORD

segment of first 386MAX control block??? (see #01477)

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 (see #01472)

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

???