;; This is file DRVDEFS.INC
;;
;; Copyright (c) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
;; Copyright (C) 1992 Csaba Biegl, 820 Stirrup Dr, Nashville, TN 37221
;; Copyright (C) 1993 Grzegorz Mazur, gbm@ii.pw.edu.pl
;;
;; This file is distributed under the terms listed in the document
;; "copying.dj", available from DJ Delorie at the address above.
;; A copy of "copying.dj" should accompany this file; if not, a copy
;; should be available from where this file was obtained.  This file
;; may not be distributed without a verbatim copy of "copying.dj".
;;
;; This file is distributed WITHOUT ANY WARRANTY; without even the implied
;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
;;


;; ==================================================================
;;			 DRIVER FLAG BITS
;; ==================================================================

GRD_NEW_DRIVER  equ 0008h	;; NEW FORMAT DRIVER IF THIS IS SET
GRD_VESA_DRIVER	equ 000fh

GRD_PAGING_MASK equ 0007h	;; mask for paging modes
GRD_NO_RW	equ 0000h	;; standard paging, no separate R/W
GRD_RW_64K	equ 0001h	;; two separate 64K R/W pages
;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
;; THE FOLLOWING THREE OPTIONS ARE NOT SUPPORTED AT THIS TIME !!!
;;
GRD_RW_32K	equ 0002h	;; two separate 32Kb pages
GRD_MAP_128K	equ 0003h	;; 128Kb memory map -- some Tridents do it
				;; (1024x768x16 without paging!!!)
GRD_MAP_EXTMEM  equ 0004h	;; Can be mapped extended, above 1M.
				;; Some Tseng 4000-s can do it.
				;; NO PAGING AT ALL!!!!
;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

GRD_TYPE_MASK	equ f000h	;; adapter type mask
GRD_VGA		equ 0000h	;; vga
GRD_EGA		equ 1000h	;; ega
GRD_HERC	equ 2000h	;; hercules
GRD_8514A	equ 3000h	;; IBM 8514A or compatible
GRD_S3		equ 4000h	;; S3 graphics accelerator

GRD_PLANE_MASK  equ 0f00h	;; bitplane number mask
GRD_8_PLANES	equ 0000h	;; 8 planes = 256 colors
GRD_4_PLANES	equ 0100h	;; 4 planes = 16 colors
GRD_1_PLANE	equ 0200h	;; 1 plane = 2 colors
GRD_16_PLANES	equ 0300h	;; VGA with 32K colors
GRD_16X_PLANES	equ 0500h	;; VGA with 64K colors
GRD_24_PLANES	equ 0600h	;; VGA with 16M colors
GRD_8_X_PLANES  equ 0400h	;; VGA in mode X w/ 256 colors

GRD_MEM_MASK	equ 00f0h	;; memory size mask
GRD_64K		equ 0010h	;; 64K display memory
GRD_128K	equ 0020h	;; 128K display memory
GRD_256K	equ 0030h	;; 256K display memory
GRD_512K	equ 0040h	;; 512K display memory
GRD_1024K	equ 0050h	;; 1MB display memory
GRD_192K	equ 0060h	;; 192K -- some 640x480 EGA-s
GRD_M_NOTSPEC	equ 0000h	;; memory amount not specified