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Format of COMBI-disk data packet

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Offset Size Description

00h

6 BYTEs

ASCIZ signature "COMBI"

06h

WORD

version
high byte = decimal major version
low byte = decimal minor version

08h

BYTE

current options

09h

BYTE

sectors per allocation block

0Ah

WORD

maximum buffer in KB

0Ch

WORD

current buffer in KB (less than max if XMS memory being lent)

0Eh

WORD

total number of allocation blocks

10h

WORD

current number of allocation blocks

12h

WORD

number of blocks being used by RAM disk

14h

WORD

number of blocks being used by cache or unused

16h

WORD

number of dirty cache blocks

18h

WORD

number of blocks which could not be written out due to errors

1Ah

WORD

total number of read requests

1Ch

WORD

total number of sectors read

1Eh

WORD

number of BIOS read requests (cache misses)

20h

WORD

number of sectors read via BIOS (cache misses)

22h

WORD

total number of write requests

24h

WORD

total number of sectors written

26h

WORD

number of BIOS write requests

28h

WORD

number of sectors written via BIOS

2Ah

WORD

number of RAM disk read requests

2Ch

WORD

number of sectors read from RAM disk

2Eh

WORD

number of RAM disk write requests

30h

WORD

number of sectors written to RAM disk