www.pudn.com > drdossrc.zip > DRIVER.EQU

;    File              : $DRIVER.EQU$ 
; 
;    Description       : 
; 
;    Original Author   : DIGITAL RESEARCH 
; 
;    Last Edited By    : $CALDERA$ 
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; Device driver header offsets. 
 
 
DH_NEXT		equ	es:dword ptr 0		; Dword Pointer to Next DEV 
DH_NEXTOFF	equ	es:word ptr 0		; Offset of next device 
DH_NEXTSEG	equ	es:word ptr 2		; Segment of next device 
DH_ATTRIB	equ	es:word ptr 4		; device attribute bits 
DH_STRATEGY	equ	es:word ptr 6		; offset of strategy entry 
DH_INTERRUPT	equ	es:word ptr 8		; offset of interupt entry 
DH_NAME		equ	es:byte ptr 10		; 8-BYTE device name 
 
DA_CHARDEV	equ	8000h		; 1=character device, 0=block device 
DA_IOCTL	equ	4000h		; device supports IOCTL string I/O 
DA_NONIBM	equ	2000h		; dosen't require FAT for login 
DA_OTILBSY	equ	2000h		; supports "output until busy" 
DA_REMOVE	equ	0800h		; supports "removable media" check 
DA_QUERY	equ	0080h		; supports query ioctl 
DA_GETSET	equ	0040h		; supports 3.2 level functionality 
DA_SPECIAL	equ	0010h		; fast console ouput via INT 29h 
DA_ISCLK	equ	0008h		; device is current clock device 
DA_ISNUL	equ	0004h		; device is NUL device (reserved) 
DA_BIGDRV	equ	0002h		; supports > 65535 sector per drive 
DA_ISCOT	equ	0002h		; device is standard output device 
DA_ISCIN	equ	0001h		; device is standard input device 
 
FASTCON_INT	equ	29h		; fast console output interrupt