videogamepreservation
/
descent
mirror of https://github.com/videogamepreservation/descent


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257
							;THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
;SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
;END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
;ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
;IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
;SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
;FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
;CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
;AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.  
;COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
;
; $Source: f:/miner/source/2d/rcs/tweak.inc $
; $Revision: 1.3 $
; $Author: john $
; $Date: 1993/11/16 11:28:09 $
;
; Parameters used by modex.asm to set various modex resolutions.
;
; $Log: tweak.inc $
; Revision 1.3  1993/11/16  11:28:09  john
; *** empty log message ***
; 
; Revision 1.2  1993/10/15  16:23:18  john
; y
; 
; Revision 1.1  1993/09/08  11:41:09  john
; Initial revision
; 
;
;


; Mode X CRTC register tweaks for various resolutions

X320Y200    db      00      ; 0e3h    ; dot clock
			db      02      ; Number of CRTC Registers to update
			dw      00014h  ; turn off dword mode
			dw      0e317h  ; turn on byte mode
			dw      320     ; width
			dw      200     ; height

X320Y240    db      0e3h    ; dot clock
			db      10      ; Number of CRTC Registers to update
			dw      00d06h  ; vertical total
			dw      03e07h  ; overflow (bit 8 of vertical counts)
			dw      04109h  ; cell height (2 to double-scan)
			dw      0ea10h  ; v sync start
			dw      0ac11h  ; v sync end and protect cr0-cr7
			dw      0df12h  ; vertical displayed
			dw      00014h  ; turn off dword mode
			dw      0e715h  ; v blank start
			dw      00616h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      320     ; width
			dw      240     ; height

X360Y200    db      0e7h    ; dot clock
			db      08      ; Number of CRTC Registers to update
			dw      06b00h  ; horz total
			dw      05901h  ; horz displayed
			dw      05a02h  ; start horz blanking
			dw      08e03h  ; end horz blanking
			dw      05e04h  ; start h sync
			dw      08a05h  ; end h sync
			dw      00014h  ; turn off dword mode
			dw      0e317h  ; turn on byte mode
			dw      360     ; width
			dw      200     ; height


X360Y240    db      0e7h    ; dot clock
			db      17      ; Number of CRTC Registers to update
			dw      06b00h  ; horz total
			dw      05901h  ; horz displayed
			dw      05a02h  ; start horz blanking
			dw      08e03h  ; end horz blanking
			dw      05e04h  ; start h sync
			dw      08a05h  ; end h sync
			dw      00d06h  ; vertical total
			dw      03e07h  ; overflow (bit 8 of vertical counts)
			dw      04109h  ; cell height (2 to double-scan)
			dw      0ea10h  ; v sync start
			dw      0ac11h  ; v sync end and protect cr0-cr7
			dw      0df12h  ; vertical displayed
			dw      02d13h  ; offset;
			dw      00014h  ; turn off dword mode
			dw      0e715h  ; v blank start
			dw      00616h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      360
			dw      240

X376Y282    db      0e7h
			db      18
			dw      06e00h  ; horz total
			dw      05d01h  ; horz displayed
			dw      05e02h  ; start horz blanking
			dw      09103h  ; end horz blanking
			dw      06204h  ; start h sync
			dw      08f05h  ; end h sync
			dw      06206h  ; vertical total
			dw      0f007h  ; overflow
			dw      06109h  ; cell height
			dw      0310fh  ;
			dw      03710h  ; v sync start
			dw      08911h  ; v sync end and protect cr0-cr7
			dw      03312h  ; vertical displayed
			dw      02f13h  ; offset
			dw      00014h  ; turn off dword mode
			dw      03c15h  ; v blank start
			dw      05c16h  ; v blank end
			dw      0eb17h  ; turn on byte mode
			dw      376
			dw      282


X320Y400    db      0h    ; dot clock
			db      03      ; Number of CRTC Registers to update
			dw      04009h  ; cell height
			dw      00014h  ; turn off dword mode
			dw      0e317h  ; turn on byte mode
			dw      320     ; width
			dw      400     ; height

X320Y480    db      0e3h    ; dotclock
			db      10      ; Number of CRTC Registers to update
			dw      00d06h  ; vertical total
			dw      03e07h  ; overflow (bit 8 of vertical counts)
			dw      04009h  ; cell height (2 to double-scan)
			dw      0ea10h  ; v sync start
			dw      0ac11h  ; v sync end and protect cr0-cr7
			dw      0df12h  ; vertical displayed
			dw      00014h  ; turn off dword mode
			dw      0e715h  ; v blank start
			dw      00616h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      320     ; width
			dw      480     ; height

X360Y400    db      0e7h    ; dot clock
			db      09      ; Number of CRTC Registers to update
			dw      06b00h  ; horz total
			dw      05901h  ; horz displayed
			dw      05a02h  ; start horz blanking
			dw      08e03h  ; end horz blanking
			dw      05e04h  ; start h sync
			dw      08a05h  ; end h sync
			dw      04009h  ; cell height
			dw      00014h  ; turn off dword mode
			dw      0e317h  ; turn on byte mode
			dw      360     ; width
			dw      400     ; height

X360Y480    db      0e7h
			db      17
			dw      06b00h  ; horz total
			dw      05901h  ; horz displayed
			dw      05a02h  ; start horz blanking
			dw      08e03h  ; end horz blanking
			dw      05e04h  ; start h sync
			dw      08a05h  ; end h sync
			dw      00d06h  ; vertical total
			dw      03e07h  ; overflow
			dw      04009h  ; cell height
			dw      0ea10h  ; v sync start
			dw      0ac11h  ; v sync end and protect cr0-cr7
			dw      0df12h  ; vertical displayed
			dw      02d13h  ; offset
			dw      00014h  ; turn off dword mode
			dw      0e715h  ; v blank start
			dw      00616h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      360
			dw      480

X360Y360    db      0e7h
			db      15
			dw      06b00h  ; horz total
			dw      05901h  ; horz displayed
			dw      05a02h  ; start horz blanking
			dw      08e03h  ; end horz blanking
			dw      05e04h  ; start h sync
			dw      08a05h  ; end h sync
			dw      04009h  ; cell height
			dw      08810h  ; v sync start
			dw      08511h  ; v sync end and protect cr0-cr7
			dw      06712h  ; vertical displayed
			dw      02d13h  ; offset
			dw      00014h  ; turn off dword mode
			dw      06d15h  ; v blank start
			dw      0ba16h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      360
			dw      360

X376Y308    db      0e7h
			db      18
			dw      06e00h  ; horz total
			dw      05d01h  ; horz displayed
			dw      05e02h  ; start horz blanking
			dw      09103h  ; end horz blanking
			dw      06204h  ; start h sync
			dw      08f05h  ; end h sync
			dw      06206h  ; vertical total
			dw      00f07h  ; overflow
			dw      04009h  ;
			dw      0310fh  ;
			dw      03710h  ; v sync start
			dw      08911h  ; v sync end and protect cr0-cr7
			dw      03312h  ; vertical displayed
			dw      02f13h  ; offset
			dw      00014h  ; turn off dword mode
			dw      03c15h  ; v blank start
			dw      05c16h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      376
			dw      308

X376Y564    db      0e7h
			db      18
			dw      06e00h  ; horz total
			dw      05d01h  ; horz displayed
			dw      05e02h  ; start horz blanking
			dw      09103h  ; end horz blanking
			dw      06204h  ; start h sync
			dw      08f05h  ; end h sync
			dw      06206h  ; vertical total
			dw      0f007h  ; overflow
			dw      06009h  ;
			dw      0310fh  ;
			dw      03710h  ; v sync start
			dw      08911h  ; v sync end and protect cr0-cr7
			dw      03312h  ; vertical displayed
			dw      02f13h  ; offset
			dw      00014h  ; turn off dword mode
			dw      03c15h  ; v blank start
			dw      05c16h  ; v blank end
			dw      0e317h  ; turn on byte mode
			dw      376
			dw      564

LAST_X_MODE         equ    11

ModeTable   dd      offset X320Y200
			dd      offset X320Y240
			dd      offset X360Y200
			dd      offset X360Y240
			dd      offset X376Y282
			dd      offset X320Y400
			dd      offset X320Y480
			dd      offset X360Y400
			dd      offset X360Y480
			dd      offset X360Y360
			dd      offset X376Y308
			dd      offset X376Y564