pageswap.inc

来自「用于查询PC机上的USB端口是否有设备挂接上」· INC 代码 · 共 62 行

;******************************************************************************
;
;   (C) Copyright MICROSOFT Corp., 1988-1995
;
;   Title:	PageSwap.Inc - Demand Paging Swap Device Services
;
;   Version:	4.00
;
;   Date:	18-Oct-1988
;
;   Author:	RAL
;
;------------------------------------------------------------------------------
;
;   Change log:
;
;      DATE	REV		    DESCRIPTION
;   ----------- --- -----------------------------------------------------------
;   18-Oct-1988 RAL Original
;   19-Oct-1990 JEM Added Buffer Descriptor structure
;   14-Apr-1992 BJS New memory manager
;   03-Nov-1995 MIKETOUT Added paging method equates
;
;==============================================================================


Begin_Service_Table PageSwap


PageSwap_Service PageSwap_Get_Version, LOCAL
PageSwap_Service PageSwap_Invalid_Service1, LOCAL
PageSwap_Service PageSwap_Invalid_Service2, LOCAL
PageSwap_Service PageSwap_Invalid_Service3, LOCAL
PageSwap_Service PageSwap_Invalid_Service4, LOCAL
PageSwap_Service PageSwap_Invalid_Service5, LOCAL
PageSwap_Service PageSwap_Test_IO_Valid, LOCAL
PageSwap_Service PageSwap_Read_Or_Write, LOCAL
PageSwap_Service PageSwap_Grow_File, LOCAL
PageSwap_Service PageSwap_Init_File, LOCAL

End_Service_Table PageSwap


; Buffer descriptor for PageFile_Read_Or_Write

PageSwapBufferDesc	STRUC
PS_BD_Next		dd	?	; ignored
PS_BD_Cmd		db	?	; PF_Read_Data or PF_Write_Data
PS_BD_Priority		db	?	; ignored
PS_BD_Status		db	?	; return value, PFS_Failure or PFS_Success
PS_BD_nPages		db	?	; number of pages to read or write
PS_BD_Buffer_Ptr	dd	?	; linear address to transfer to or from
PS_BD_File_Page 	dd	?	; page offset within paging file
;PS_BD_Call_Back	 dd	 ?	; field existed in 3.1, but not any more
;PS_BD_Semaphore	 dd	 ?	; field existed in 3.1, but not any more
PageSwapBufferDesc	ENDS

PS_PAGING_NONE		EQU 1
PS_PAGING_DOS		EQU 2
PS_PAGING_DRAGON	EQU 3