en:docs:dpmi:api:int31:06:04

Note: This API calls are shared between DOS and Win16 personality.

DOSX is a specialized version of DPMI. Windows standard and extended mode kernel is a DPMI client app. Standard and extended mode kernel differs minimally and shares common codebase. Standard mode is just DPMI client, exnhanced mode is DPMI client running under Virtual Machime Manager. Both modes shares DPMI interface for kernel communication. The OS/2 virtual DOS Protected Mode Interface (VDPMI) device driver provides Version 0.9 DPMI support for virtual DOS machines. Win16 provides Version 1.0 DPMI support, but reported as 0.9.

2021/08/05 12:15 · prokushev

Int 31H, AH=06H, AL=04H

Version

0.9

Brief

Get Page Size

Input

AX = 0604H
  

Return

if function successful
Carry flag = clear
BX:CX = page size in bytes

if function unsuccessful
Carry flag = set
AX = error code
8001H	unsupported function (16-bit host)

Notes

Returns the size of a single memory page in bytes.

See also

Note

DPMI
Process manager INT 2FH 1680H, 1687H
Signals
Memory manager
Misc INT 2FH 1686H, 168AH
Devices
2021/08/13 16:23 · prokushev

en/docs/dpmi/api/int31/06/04.txt · Last modified: 2021/08/27 07:56 by prokushev