컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic V7.3 (c)2002 Stefan Peichl, Heidelberg, Germany http://hplx.pgdn.de 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic is a very small, powerful and fast DOS picture viewer. It has just 20 KB code and runs in 64 KB of memory on any 8086 compatible computer. It supports all display modes from early CGA up to the latest 2048x1536 QXGA True Color (32bit) screens. This makes LxPic ideal for use on the HP Palmtops, for which it was originally designed. On Windows systems, LxPic runs perfectly in a full screen DOS box or in a DOS box window. LxPic processes BMP, PCX, JPG and GIF files of any kind. BMP and PCX files may have 2, 4, 256 or True Colors (16 Mio). JPG files may have 256 gray scales or True Colors. GIF files may have Version 87a or 89a (including multi images) with up to 256 colors. LxPic has a low, medium and high {JKL} resolution list mode, to preview more than one picture as thumbnails on one screen. Dependent on your selected display mode, up to 361 thumbnails are displayed on one screen. See LIST MODE section for further information about this feature. LxPic needs no configuration. Its default startup mode should work for most situations. However you may override every default setting through an appropriate command line switch and/or you may use an optional configuration file LXPIC.CFG. See the COMMAND LINE SWITCHES and the OPTIONAL LXTEL.CFG section of this documentation for further information. LxPic recognizes your display adapter and sets the display to the best standard mode. If your computer is equipped with a VESA BIOS which supports direct hardware access, LxPic starts in the 640x480x16 VGA mode. Use {*} to pop up a window with all available display modes to select from. Another way of changing the display mode is to use {F2} to cycle through the VGA modes and {F3} to cycle through the VESA modes. {Shift F2} and {Shift F3} cycle backwards. It is very likely, that your graphics card supports more screen modes than your monitor does. Press F3 to skip these modes. LxPic supports the following display modes: MODE | WIDTHxHEIGHTxBIT | MEM | BIOS | THUMBNAILS | CMD-LINE -----+------------------+-----+------+------------+----------- *HP95 | 240 x 128 x 1 | 4K | 20h | 2/ 4/ 6 | LXPIC /0 CGA | 640 x 200 x 1 | 16K | 06h | 3/ 6/15 | LXPIC /1 VGA | 320 x 200 x 8 | 64K | 13h | 4/ 9/12 | LXPIC /2 EGA | 640 x 350 x 4 | 64K | 10h | 9/16/36 | LXPIC /3 VGA | 640 x 480 x 4 |256K | 12h | 9/16/36 | LXPIC /4 -----+------------------+-----+------+------------+----------- VGA | 640 x 480 x 8 | 첤B | 101h | 9/16/36 | LXPIC /5 VGA | 640 x 480 x 16 | 1MB | 111h | 9/16/36 | LXPIC /6 VGA | 640 x 480 x 24 | 1MB | 112h | 9/16/36 | LXPIC /7 -----+------------------+-----+------+------------+----------- SVGA | 800 x 600 x 8 | 첤B | 103h | 9/16/49 | LXPIC /8 SVGA | 800 x 600 x 16 | 1MB | 114h | 9/16/49 | LXPIC /9 SVGA | 800 x 600 x 24 | 2MB | 115h | 9/16/49 | LXPIC /10 -----+------------------+-----+------+------------+----------- XGA | 1024 x 768 x 8 | 1MB | 105h | 9/36/81 | LXPIC /11 XGA | 1024 x 768 x 16 | 2MB | 117h | 9/36/81 | LXPIC /12 XGA | 1024 x 768 x 24 | 4MB | 118h | 9/36/81 | LXPIC /13 -----+------------------+-----+------+------------+----------- SXGA | 1280 x 1024 x 8 | 2MB | 107h | 25/56/144 | LXPIC /14 SXGA | 1280 x 1024 x 16 | 4MB | 11Ah | 25/56/144 | LXPIC /15 SXGA | 1280 x 1024 x 24 | 4MB | 11Bh | 25/56/144 | LXPIC /16 -----+------------------+-----+------+------------+----------- UXGA | 1600 x 1200 x 8 | 2MB | var. | 36/81/225 | LXPIC /17 UXGA | 1600 x 1200 x 16 | 4MB | var. | 36/81/225 | LXPIC /18 UXGA | 1600 x 1200 x 32 | 8MB | var. | 36/81/225 | LXPIC /19 -----+------------------+-----+------+------------+----------- QXGA | 2048 x 1536 x 8 | 3MB | var. | 36/144/361 | LXPIC /20 QXGA | 2048 x 1536 x 16 | 6MB | var. | 36/144/361 | LXPIC /21 QXGA | 2048 x 1536 x 32 |12MB | var. | 36/144/361 | LXPIC /22 -------------------------------------------------------------- *HP Palmtop only Run LXPIC /* to get an offline list of all available display modes of your graphics card. If you don't want LxPic to autodetect the video mode, you may use the above listed command line switches to force LxPic to use the desired mode at startup. This is important, if you want to run LxPic in a window under Windows. All non VESA modes should work in Win95 windows but only CGA works under Win3.11 Indeed you may use all modes in full screen DOS boxes. If your screen remains blank after startup or displays unexpected results, press {F2} or {*} to access the standard VGA modes. See TECHNICAL for further information about VESA. If a picture has more colors than the actual display mode allows, the colors are reduced and dithered. If you don't want to see colors, you may always switch colors off with the {C}olor toggle key. If you don't want to see grayscales, you may always enable B&W display using the {W} toggle key. LxPic does not support printing, but you may use the DOS Print Screen function to copy the actual screen to a printer if you have the DOS graphics driver GRAPHICS.COM installed. The special HP Palmtop resize command {H} corrects the dispro- portion of the Palmtops pixel ratio and of the colorful VGA 320x200x8 mode. LxPic has an interface to use it as a 'subroutine' in other programs. See PROGRAMMERS INTERFACE section of this document- ation for further information. *The Graphics Interchange Format(c) is the Copyright property of CompuServe Incorporated. GIF(sm) is a Service Mark property of CompuServe Incorporated. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� REVISION HISTORY 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Version 7.3 -Vernon Buerg's enhanced LIST supports now LxPic. (12-DEC-02) Press Ctrl-V on any picture file in LIST to invoke LxPic. Esc returns to LIST. Get LIST from www.buerg.com -Improved BMP, GIF, JPG and PCX display -Improved VESA detection -Alt-F adds a key mask to the file info box -F10 and T keys exchanged. T displays JPG thumbs now if available in an application segment. F10 is the new key for B&W Text zoom out. -800x600x4 display mode removed for compatibility reasons. Therefore all VESA modes decreased by 1 -1024x600 special Toshiba resolution removed Version 7.2 -Optional configuration file LXPIC.CFG (09-JUN-02) -Online display mode selection with {*} key -New command line switches: /= filename annunciator /] decrease slide show delay by 2 seconds /[ increase slide show delay by 2 seconds /& increase slide show delay by 1 minute -Bigger font for all VESA modes >= 1280x1024 -Path display while scanning subdirectories -B&W images are always visible now -Windows long filename bug fixed Version 7.1 -DOS shell works now for all Windows versions (10-MAR-02) -High and True color bug fixed for some VESAs -Added Windows NT/2000/XP under "HOW TO USE LXPIC" Version 7.0 -High (64K) and True color (16.7M) display modes (02-FEB-02) -VBE3 (Vesa Bios Extension 3.0) compatible -Improved JPEG display quality -Improved JPEG VESA auto zoom (100% screen fit) -All JPEG subsamlings supported in VESA modes -16 bit dither for true color JPEG in 64K modes -Multi image GIF improved and running endless -GIF transparent color supported -New 800x600x4 VGA mode (Command line switch /5) -F5 scans all drives from Z-A for available images (Command line switch /!) -Shift F5 scans all drives from A-Z -ESC skips one drive during drive scans -Ctrl-C exits LxPic immediately from drive scans -{A} autozooms only images bigger than the screen -{a} autozooms all images -{#} toggles between best and startup screen mode -/# starts LxPic in the best available screen mode -/* displays all available screen modes -TAB shells into the directory of the actual image -Alt-B inverts screen background color (Command line switch /b) -Save screen as B&W PCX moved from F5 to Shift F4 -Alt F4 saves the image as B&W Palmtop ICN file -BS key displays previous image (same as {P} key) -Load time displayed in the File Info Box -Picture date displayed in the File Info Box -BitBlt support on the HP Palmtop -Build in Vesa character generator -Alt-6 toggles between 1024x768 and 1024x600 pixel resolution (useful for Toshiba Portege 300CT) -Alt-A (Art) omits resetting the VESA screen -Alt-R Raster zoom in for JPEG in VESA modes -Alt-G multi image GIF background toggle -F9 UXGA VESA mode enable/disable toggle -Rename {N} works now under Windows -No more Casio CAM and Kodak IMG support Version 6.4 -Support of lynx *.JPE files (21-APR-00) Version 6.3 -JPEG bug fixed concerning Kodak DC260 (05-DEC-99) Version 6.2 -Omnibook DEL key bug fixed (08-MAR-99) -Limited support of Casio CAM and Kodak IMG format Version 6.1 -Complete command line control of LxPic (15-APR-98) -Command line conversion to B&W PCX with /O or /@ -{S}ubdirectory Scan available from within LxPic... -...therefore Slide Show key replacement {Y} -Scan indicator '' in front of the filename -{Q}uit now leaves picture on the screen -Default palmtop startup mode reset to B&W -Programmers Interface improvements for HV Version 6.0 -Low, medium, high resolution list modes {J,K,L} (06-DEC-97) -640x200x4 grayscale CGA mode (Palmtop only) -Grayscale/B&W toggle key {W} added on the Palmtop -Save CGA thumbnail screen as B&W PCX file {F5} -Gamma correction added {6,9} -Better text color selection -Low resolution VESA startup mode Version 5.1 -Multi image (animated) GIF support (06-OCT-97) -Space bar acts as 'single step' in animated GIFs -File name toggle key {X} added -Pixel aspect ratio now from 0.5 - 1.4 (useful for converted CAM files) -Zoom factors 16 and 32 added -Compression and Frame entry in file info box -Correct display of SONY JPEG files -F4 (Save as B&W PCX) dither bug fixed Version 5.0 -Color reduction and color dither (14-SEP-97) -JPEG 'extended sequential DCT' support (SOF1) -JPEG 'progressive DCT' support (SOF2) (only DC coefficients are displayed) -JPEG application segment processing toggle {F10} -Start up with best possible resolution Version 4.2 -Programmers interface adaptations for LxMap (17-JUN-97) -Minor improvements Version 4.1 -Improved VESA support (direct hardware access) (22-MAY-97) -{Alt F3} toggles SVGA hardware/VESA pixel output -{U}pside down command added -No more 'zoom in' restrictions concerning width -Zoom now keeps track of the image center -Programmers Interface adjustments -CAM2JPG now also supports CASIO QV-100 CAM format -Intel MMX support Version 4.0 -VGA, EGA Color/Greyscale display added {F2} (24-APR-97) -VESA SVGA 256 color mode pixel output added {F3} -Mouse support (see COMMAND section of this DOC) -{C}olor display on/off toggle key added -B&{W} display on/off toggle key added -{E}rase screen toggle key replaces old {C} key -{F7} convert B&W to Grey replaces old {F3} key -Show color palette key {F8} added Version 3.5 -Interlaced GIF support (13-MAR-97) -Cursor keys now move 1/2 screens -Page keys now always move 8 pixel rows/columns -Space{BAR} interrupts output -{Q}uit command added -Palmtop {Menu} key added to work like Help {F1} -Commands from within the Help window are now immediately executed -More logical pixel aspect ratio selection -Stepwidth for contrast etc. reduced from 8 to 4 Version 3.4 -Rename/Move command {N} added (26-JAN-97) -Select pixel aspect ratio command {F6} added Version 3.3 -Correct display of Fujifilm DS-7 JPEG files (07-JAN-97) Version 3.2 -Version 3.1 bug fixed (07-DEC-96) Version 3.1 -More speed: Output interrupted at any command (03-DEC-96) Version 3.0 -JPEG 'baseline sequential DCT' support (SOF0) (29-NOV-96) -/S switch to scan drives or subdirectorys Version 2.3 -Zoom out 1:8 and zoom in 8:1 added (01-NOV-96) -Programmers Interface improvements Version 2.2 -Intrasegment call added to Programmers Interface (22-OCT-96) Version 2.1 -Programmers Interface added (22-SEP-96) Version 2.0 -BMP,GIF,PCX,ICN of any size and dimension (31-AUG-96) -VGA,EGA,CGA,HP95 support -Dither for color pictures -Scrolling -Zoom In/Out -Edit functions -HP resize mode -B&W PCX conversion Version 1.0 -First release: Only B&W BMP and PCX files (24-APR-96) New versions of LxPic will be available on the Internet under: http://hplx.pgdn.de/lxpic.zip 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� MINIMUM SYSTEM REQUIREMENTS 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� - Processor: 8088 - DOS : 2.11 - Adapter : CGA - Memory : 64 KB - Storage : 20 KB 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� HOW TO USE LXPIC 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Note: LxPic has no file select feature. If you need one I recommend LIST from Vernon Buerg (www.buerg.com). LIST has LxPic support built in. Press Ctrl-V on any picture file from within LIST and LIST will use LxPic to display the image. Press Esc from the image view and you are back in LIST. LxPic needs no installation. If called without parameters, LxPic searches the current directory for all files with the extension BMP,GIF,JPG,JPE,PCX or ICN and displays them in the order found in the directory. If no files are found, LxPix exits and displays the help screen. LxPic behaves like the DIR command of DOS and accepts the /S command line switch to scan all subdirectories too. Which files are displayed depends on how you name them and where you keep them. To display a specific picture, use its full or relative pathname as parameter for LxPic. The wildcards * and ? are allowed in the filename to display a group of pictures with similar names. The general syntax of the LxPic command line is LXPIC filename /switches or LXPIC /switches =filename that means, if you want to put the filename after the switches you have to use the filename annunciator '=' in front of the filename. 횱XAMPLES� LXPIC displays all pictures in the current directory LXPIC/! displays all pictures on all drives from Z: to A: LXPIC/S displays all pictures in the current directory and its subdirectories LXPIC DEMO.* displays for example DEMO.PCX, DEMO.GIF and DEMO.JPG in the current directory LXPIC \PIC\V?.PCX displays for example V1.PCX and V2.PCX in the directory PIC of the current drive LXPIC D:/SLV displays all pictures on your D: drive as thumbnails without any further input from you. Very useful for CDROMs LXPIC C:\DEMO.GIF/SF (or LXPIC /SF =C:\DEMO.GIF) searches your whole C: drive for the file DEMO.GIF and displays it if present with the file info box If you use the scan switch /S from the command line or the equivalent command {S} from within LxPic, the program exits after all files have been displayed. Without /S, LxPic loops endlessly until you press ESC. If you want to go back one picture within a subdirectory you reached in a scan, first switch scan off with the {S} toggle key. Later on you may switch scan on again to reach further subdirectories. I recommend to switch filenames ON with {X} during a scan in order to not get lost on large drives. 훇INDOWS 3.x/95/98� If you want to use LxPic under Windows, you have the choice to run it in a full screen DOS box or in a window. In a full screen DOS box, you have access to all video modes, your hardware supports. If you want to run LxPic in a window, you are restricted in the video modes and you have to start LxPic with an appropriate command line video mode switch: Windows 3.x : LXPIC/1 (CGA only) Windows 95/98: LXPIC/4 (VGA or worse with /3,/2,/1) You may also create a PIF file to start LxPic from the program manager. See your Windows documentation for the details on how to create a PIF file for DOS programs. 훇INDOWS NT4/2000/XP� On all NT based operating systems, VESA is only available in full screen DOS boxes. Therefore I recommend to use LxPic only in full screen mode on such systems. However some users reported problems with LxPic on NT systems. Tamas Feher suggests to create a custom startup file for LxPic which disables loading of DOSX.EXE: | Copy the file \windows_nt_directory\system32\autoexec.nt | to LxPic's directory, rename it to lxpicenv.nt, edit it to | comment out the dosx.exe line, then save the file. Right | click lxpic.com, properties, Program Tab, press "Windows NT" | button, specify \lxpicenv.nt instead of autoexec.nt | OK to close. Set "use full screen" in both the Program Tab | and the Screen Tab and press OK. | | You can now start LxPic from Windows Explorer or any other | file manager with no need to manually open and maximize a | DOS box for LxPic use with VESA. | | To associate LxPic with opening (doubleclick) a filetype like | JPG, use "My Computer", View, Options, File Types tab, Edit, | Action-Open: Edit, clear DDE checkbox, enter: | | \lxpic.com /yourfavouriteswitches =%1 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� KEYBOARD AND MOUSE COMMANDS 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� The Help key {F1} pops up a window with all command keys. Command line switches are marked with the � sign. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 퀆7.3 (c)2002 Stefan Peichl, Heidelberg� 쿗XPIC [file.BMP|GIF|JPG|PCX][/Switch�]� �* ? Wildcards ok,�=Command Line Switch� 쳐컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴캑 쿕KL�ListMode On/Off쿑1 Help Menu ?�� 쿑X �FileInfo On/Off쿑2* VGA ... 0- 5�� 쿞 �SubDirSc On/Off쿑3* VESA ... 6-23�� 쿓 �HPResize On/Off쿑4 Save as PCX O�� 쿐 �EraseScr On/Off쿑5 Scan Drives !�� 쿔 �InvtPict On/Off쿐SC Exit (or Q) Q�� 쿢 �UpsiDown On/Off쿟AB Path DOS Shell� 쿌a �AutoZoom On/Off쳐컴횮OLOR/GREY컴컴� 쿟 �ThumbJPG On/Off쿎 �Col Dsp On/Off� �+=-�ZoomPict In/Out쿥 �B&W Dsp On/Off� 쿧V �Slid/Vid On/Off쿏 �Dither On/Off� �> < Slid/Vid Fa/Slo쿝GB RGB Col Select� 쿍AR Slid/Vid Suspnd쿘 Mix RGB Colors� 쿏EL Delete Picture�/ Reset Values� 쿙 Rename Picture�6 9 Gamma Gx�- +� 쿛 Prev Picture�7 8 Shadows - +� 쿎R Next Picture�4 5 Highlights - +� 쿛G..Move 8 Row/Col�1 2 Contrast - +� 쿎U..Move � Screens�0 . Brightness - +� 읕컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴켸 Press {F1} again or press {ESC} to close the Help window. If you press a valid command key, the Help window is closed, and the corresponding action is immediately performed. Almost all commands are single key strokes and I tried to assign meaningful keys to the commands. The action taken upon a command is valid for the actual and all following images. If you have, for example, a sequence of pictures with little contrast, you have to adjust contrast only once. You may enter a command at any time. The command is immediately executed, interrupting the actual output. You don't have to wait with command input until the picture is completely displayed. If you hear a key click, the pressed key had no function at all or did not apply to the actual picture type, or you reached the end of a range. Use the cursor keys or the mouse to scroll an image. Cursor keys scroll the image by 1/2 screen in the indicated direction. Page keys (Palmtop: Fn+cursor) scroll the image by 8 columns or 8 lines in the indicated direction. I exchanged the meaning of these keys for single key strokes on the Palmtop. I tried to keep the x/y offset in consecutive pictures to allow you zoom- ing the same position in a slideshow. 횺OUSE INPUT� LxPic automatically enables mouse support if it finds a mouse driver installed and a mouse connected. Mouse and keyboard may be used concurrently. The supported mouse functions are: click left Next picture click right Previous picture press left + click right Zoom in press right + click left Zoom out press left + move mouse Move picture, as if you put your hand on the picture. Move the mouse slowly for best results! 횷EYBOARD INPUT� L High resolution thumbnail mode. See LIST MODE section for further information K Medium resolution thumbnail mode J Low resolution thumbnail mode F Display file and parameter information box: C:\DEMO.GIF Drive:\Path\Filename 旼컴컴컫컴컴컴� 쿞ize � 1244� Filesize : in bytes or KB 쿏ate �14DE98� Date : DD MM YY 쿥ide � 344� Pixelwidth : actual representation 쿓igh � 50� Pixelheight: actual representation 쿏eep � 4� Colordepth : 1|2|3|4|5|6|7|8|24 (in bits) 쿟ype � COLOR� Picturetype: COLOR | GREY | B&W 쿎omprs� LZW� Compression: SOFx_YCbCr|LZW|RLE|NONE 쿑rames� 1� Framenumber: usually 1 except in videos 쿗oaded� 0.05� Load Time : in 1/100 seconds 쿦_Offs� 0� Pixelcolumn: of upper left displayed corner 쿧_Offs� 0� Pixelline : of upper left displayed corner 쿩oom %� 100� Zoom in/out: 3% - 3200% or auto zoom rate 쿍&wDsp� ON� B&W display: ON | OFF 쿎olDsp� OFF� Col display: ON | OFF 쿏ither� ON� Dither mode: ON | OFF 쿒amCor� 0� Gamma : 0=unchanged, 5=max, - 5=min 쿞hadow� 0� Shadow : 0=unchanged, 127=max, -127=min 쿓light� 0� Highlights : 0=unchanged, 127=max, -127=min 쿎ontra� 0� Contrast : 0=unchanged, 127=max, -127=min 쿍right� 0� Brightness : 0=unchanged, 127=max, -127=min 쳐컴컴컨컴컴컴� � 640�200�1 � Screenmode : width x height x bitdepth 읕컴컴컴컴컴컴� X Display only file name in the upper left corner. S Subdirectory scan toggle key. If subdirectory scan is ON, the arrow '' appears in front of the filename. H Resizes the picture to a pixel aspect ratio of 1:0.8. A picture with 640x240 pixel is resized to 640x200 pixel for example. The actual aspect ratio is displayed in the file info box. HP resize is off by default. See also the more general pixel aspect ratio command {F6}. E Erase screen between two pictures (ON by default) I Invert screen. LxPic inverts pictures by default, if running on a HP Palmtop Z Center picture in the middle of the screen (ON by default) U Display picture upside down and mirrored. This has no effect on the save commands {F4} and {Shift F4}. a Auto zoom. If switched on, the zoom mode is selected, which displays most of the picture. Auto zoom is OFF by default. If switched on, you see the letter 'a' in the 'Zoom' entry of the file info. A Auto zoom. Fits only pictures bigger than the screen. + Zoom in to 200%, 400%, 800%, 1600% and 3200% Use Alt-R to toggle between normal zoom and raster zoom. Raster zoom only works for JPEGs in VESA display modes and yields a subjectively better (but darker) result. = Reset Zoom to 100% and start display with the upper left corner set to 0,0. (Use also {*} on desktops) - Zoom out to 50%, 25%, 12%, 6% and 3% # toggle between best and startup display mode * select a screenmode from the popup window. Use the cursor keys to select a new mode and press Enter to set it or press ESC to exit and leave the mode unchanged. T Many JPEG images from digital cameras store thumbnail pictures in Exif application segments. Press T to display the thumbnail if available instead of the fullsize image. If thumbnails are turned on, you will see the letter 'T' on the Zoom line of the file info box. Y Perform a slideshow V Perform a video. Same as slideshow, but at maximal speed without erase screen between pictures. Multi image Gif files are also displayed at maximal speed, giving you the illusion of a video. > Slideshow/Video faster up to maximal speed < Slideshow/Video slower BAR Enter 'single step' mode for Slideshow/Video/List or multi image GIFs. Press Spacebar again for next picture/frame. Exit single step mode with {CR} or {P}. DEL Delete the actual displayed picture. You have to confirm before the file is deleted N Rename/Move picture filename. You may not move the file to a different drive because this would be a 'copy', which is not supported. After the rename, the next picture is displayed. P Display previous picture, as found in the directory. This command also changes the direction for Slide/Video/List. You cannot use it to run a video backwards. BS same as P CR Display next picture, as found in the directory. This command resets the direction for Slide/Video/List to forward. TAB Shells to DOS and uses the directory of the last displayed image. This command is useful during a scan, if you want to see which other files are in the directory of the actual image. You may change the directory and drive in the DOS shell, but upon exiting from the shell LxPic continues at the same spot where it was interrupted. You may call a second incarnation of LxPic in the shell, but you should not shell out to DOS again from this second incarnation. Rather close LxPic in the shell and exit from the shell to continue with the first call of the program. ESC Exit LxPic. If you exit LxPic with {^C}, an errorlevel of 1 is returned, which is useful in batch files. Q Quit LxPic and leave the picture on the screen. a-A (Art) omits resetting the VESA screen a-B Invert screen background (default is black) a-F Dislays a key mask besides the file info box a-G Multi image GIF background toggle a-R Raster zoom in for JPEG in VESA modes F1 Display Help window. (Also {Menu} and {?} on the Palmtop) F2 Cycle through all standard VGA modes, if supported by your hardware. Use {Shift F2} to cycle backwards. F3 Cycle through all VESA SVGA modes, if supported by your BIOS and hardware. Use {Shift F3} to cycle backwards. F4 Save the whole picture -as you see it- to a B&W PCX file. You are asked for a filename. You must use a different filename from the original name and you have to add the extension PCX. The width of the saved picture is restricted to 1280 pixels for JPG images. BMP pictures end mirrored up side down. Use the {U}pside down command for correct display. The {U}pside down command has no effect on the saved picture! To save a frame of a multi image GIF file, use {Spacebar} to select the frame. F4 Shifted: Same as {F4}, but only the visible part of the picture is saved. If you want to select an even smaller part on the Palmtop, switch with {F2} to the HP95 mode and save from there. To invert a Palmtop topcard, load it, press {I} and then {F4} to save the inverted topcard. Also use this command to save a CGA thumbnail screen to a PCX file. F4 Alt: Save the actual image as Palmtop ICN file. The width of the image has to be a multiple of 8. F5 Scans all drives from Z: to A: and displays all images found. Press Shift F5 to scan from A: to Z:. ESC skips one drive during a scan. Ctrl-C exits LxPic from a scan. Use Spacebar for single step processing, press Enter or F5 again to continue the drive scan. F6 Selects pixel aspect ratios in the range 1:0.5 to 1:1.4 Enter the number after the decimal point (= 0-9). Useful for distorted camera pictures and CGA monitors. The HP resize command {H} is the shortcut of {F6}{8}. F7 Converts B&W picture to a 8 bit greyscale picture. This enables you to edit a B&W picture with the commands that are only available for color or greyscale pictures. F8 Show color palette in the upper right corner. Only works on EGA or better. The palette length depends on the screen mode and is 16 or 256. Show palette is OFF by default. F9 Supress non standard VESA modes with >= 1600 pixels width. F10 Text zoom out mode. Zooming out for B&W images is implemented by default as 'drop two, keep two' to prevent moire effects from previously dithered pictures. This command toggles zoom out mode to 'drop one, keep one', which is better for viewing B&W pictures including text. If switched on, you will see a 'ZoomX' entry in the file info box. Text zoom is OFF by default and only available for B&W pictures. 횮OLOR PICTURES ONLY� The following commands are only available if a picture with more than two colors is displayed. C Toggles between greyscale and color display. Color display is ON by default. W Toggles between B&W and color/greyscale display. B&W display is OFF by default. D Switch Dithermode OFF/ON. (ON by default). R Display Red part of the picture only G Display Green part of the picture only B Display Blue part of the picture only M Mix Red, Green and Blue to Grey = 30%R + 59%G + 11%B / Reset Shadow, Highlight, Contrast, Brightness and Gamma to 0. Set color to RGB. Switch dither on. Switch color display on. Switch B&W display off. 6 Decrease Gamma: nonlinear brightness decrease 9 Increase Gamma: nonlinear brightness increase 7 Decrease Shadows: Colors <127 move towards Grey 8 Increase Shadows: Colors <127 move towards Black 4 Decrease Highlights: Colors >127 move towards Grey 5 Increase Highlights: Colors >127 move towards White 1 Decrease Contrast: All colors move towards Grey 2 Increase Contrast: Colors <127 move towards Black Colors >127 move towards White 0 Decrease Brightness: All colors move towards Black . Increase Brightness: All colors move towards White (use also {,} on desktops) 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� COMMAND LINE SWITCHES 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Almost all command line switches are identical to their online counterparts. Adding them to the command line is identical to pressing the correspondent key while LxPic is running. Changes had to be made for: - Video mode selection /0-22 - Slide show delay time /[/]/& - Save as B&W PCX file /O - Save screen only /@ - Pixel aspect ratio /Rx - Gamma correction /Gx All switches except for 'A' and 'a' are not case sensitive and may be used in any order. The separator '/' is only needed once to separate the switches from the file names. Multiple use of the same switch is identical to single use except for the zoom switches + and -, which repeatedly zoom the picture. Invalid switches are ignored. This allows you to build switch 'words' for better recall. 훁INGLE CHARACTER COMMAND LINE SWITCHES� ? Display help screen and exit * Display all available LxPic display modes of your system # Start LxPic in the best available display mode 0..22: Start with the corresponding display mode. See INTRODUCTION for a list of all display modes. a Auto zoom ON (all images) A Auto zoom ON (big images) B White screen background C Color display OFF D Dither OFF E Erase screen between pictures OFF F File info box ON H HPresize ON I Invert screen ON J Low resolution thumbnails ON K Medium resolution thumbnails ON L High resolution thumbnails ON O Output image as B&W PCX file under the same name @ Output screen as B&W PCX file under the same name Q Quit and leave last image on screen S Scan all subdirectories too ! Scan all drives from Z: to A: T Thumbnail JPEG display ON U Upside down display ON V Video mode ON W B&W display ON (Palmtop: OFF) X File names ON Y Slide show ON Z Center picture OFF + Zoom in 1x - Zoom out 1x = filename annunciator ] decrease slide show delay by 2 seconds [ increase slide show delay by 2 seconds & increase slide show delay by 1 minute 횯OUBLE CHARACTER COMMAND LINE SWITCHES� Gx Gamma correction (x=1-9) Rx Pixel aspect ratio (x=1-9) 횮ONVERTING FILES FROM THE COMMAND LINE� The /O and /@ switches are very powerful if you want to convert a series of pictures to the fast B&W PCX format. The pictures are stored under the same name in the same directory with the extension PCX. This process runs without displaying the pictures. You may add other command line switches to zoom, gamma correct and resize the resulting PCX file. You may even convert all pictures of a whole drive with just one command. There is one drawback: You cannot use the /O and /@ switches to convert color PCX files to B&W PCX files, because this would overwrite your original file. Use the online function key conversion with another filename in this case. 횱XAMPLES� LXPIC C:\QV100\*.JPG/O-HG2 converts /O all JPEG files in the directory C:\QV100 to B&W PCX files at half size /- for the palmtop screen /H with a gamma correction of 2 /G2 LXPIC C:\QV100\*.PCX/J displays the converted files as low resolution thumbnails /J LXPIC/SAV shows all pictures in the current directory and its subdirectories /S auto zoomed /A at maximal speed /V LXPIC *.GIF/Y&&Q shows all GIF's in the current directory in a slide show /Y with 2 minutes delay /&& between every slide and quits leaving the last image on the screen /Q LXPIC D:/SL shows all pictures /S on your D: drive (CDROM) as thumbnails /L within seconds. Using a standard picture viewer under Windows, it would take hours of mouse clicking to do the same job. The switches are very useful for batch programming of demos. Especially the /Q switch allows to exit LxPic without any user input after a series of pictures has been displayed. Use /VQ to exit after the display of a single picture without any user input. NOTE: If you use the /Q switch, the screen mode is changed to graphics. This may cause problems, if you want to run programs in text mode afterwards. Run LXPIC/* to resets your screen to the default 80x25 CGA text mode. I wish to thank Tamas Feher, who convinced me of the usefulness of command line switches and encouraged me to implement high and true color display modes for perfect JPEG viewing. And many thanks to Steve Novosad for compatibility improvements concerning the various Windows systems, VESA implementations and GIF interpretation. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� OPTIONAL CONFIGURATION FILE LXPIC.CFG 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic allows the use of a very simple configuration file with the extension CFG. Just put your preferred commandline switches including the switch annunciator '/' into the LXPIC.CFG file. If you usually call LxPic as LXPIC /11Ab you should create the plain ASCII text file LXPIC.CFG and put in the single line /11Ab From now on you only have to call LXPIC from the command line and it is always automatically started with the /11Ab switches. You cannot put a filename to be displayed into the CFG file, this is only possible from the command line. You may still use additional switches from the command line which are processed in addition to the ones in your CFG file. NOTE: The configuration file has to be in the same directory as the program file and it must have the same name as the program file. If you renamed LXPIC.COM to P.COM for example, you also have to rename LXPIC.CFG to P.CFG 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LIST MODE 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� You enter and exit List mode by simply pressing one of the three keys {J,K,L}. If you enter list mode, the next image in the directory will be the first picture displayed as a thumbnail. You may exit list mode at any time. The last displayed thumbnail becomes the actual picture. If one screen is filled with thumbnails, press {Enter} to see the next screen. LxPic stops output if all pictures of a directory have been displayed as thumbnails. If you run LxPic in scan mode (command line switch /S), LxPic stops output after the last image of all subdirectories has been displayed. LxPic then beeps to signal the end. Press any key to exit LxPic. By default, LxPic displays filenames in list mode. Press {X} to suppress filename output. During list mode, you may always press {Space Bar} to enter single step mode. LxPic then stops after every thumbnail. You may now press one of the three keys {J,K,L} to exit list mode and view the last thumbnail in full screen mode. Use this feature to select a picture from the list. You may also press TAB to shell to DOS. In the DOS shell you may call LxPic again to view one specific image. If you exit from the DOS shell, list mode continues with the next image. During list mode, almost all command keys are available, except those keys that require input from you, and those keys, that perform output, like the help key {F1} and the {F}ile info key. All other commands may be entered at any time. You may for example press {P} to list backwards or switch dither off to have sharper thumbnails. For display, list mode uses the actual configuration as set by you before entering list mode (pixel aspect ratio, contrast, brightness etc.). Under CGA screen mode, you may save a thumbnail screen as a B&W PCX file with {F5}. This is useful for creating archives from digital camera pictures. On the Palmtop, thumbnails look nicer in the 4 grayscale mode. Thumbnails, saved in the 4 gray- scale mode, may also be viewed in this mode. In every other screen mode, you have to use a screen capture TSR utility to perform this task. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� PALMTOP ADVICE 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� �4 GRAYSCALE CGA� I implemented a 640x200x2 grayscale CGA mode on the HP Palmtop by reprogramming the display controller. You activate this mode by pressing the {W} key once. As long as you only view B&W pictures you will remark no difference. The new mode is only activated for color and grayscale pictures. You may have to increase your displays contrast by pressing {On+}. The drawback of this mode is, that text output is blurred. If you don't like this mode, simply press the {W} toggle key again to enable B&W display. On some speed upgraded Palmtops, the 4 grayscale display may flicker. This is because of some clock drivers, constantly resetting the frame rate. You may replace your clock driver through DSPEED.COM available on my homepage. 훁TORAGE� If you are concerned about little storage capacity, JPEG will be your preferred picture format on the Palmtop. But if you want to have output speed, B&W PCX files have the best speed/ size ratio. In other words, it makes no sense to keep BMP, GIF or color PCX files on your Palmtop. To convert color pictures to the speedy B&W PCX format, proceed as follows: - Press {H} to have the exact width/height proportions - Adjust contrast, brightness, shadow, highlight - Zoom in/out, if needed - Press {F4} to save the whole image or - Press {Shift F4} to save only the visible part of the image. If you want to select a smaller part than the HP200 screen, use {F2} to switch to the HP95 mode and make your selection in the HP95 window and press {Shift F4} in the HP95 mode to save this smaller part only. - Delete the original color picture. If you have a series of pictures of the same quality (source), you may also convert all pictures together from the command line. See COMMAND LINE SWITCHES section for details. I do not recommend to use B&W GIF files, because GIF's LZW decoding is slow compared to PCX's RLE decoding. The slightly smaller B&W GIF file size does not compensate for this drawback. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� JPEG ON THE PALMTOP 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� You have to understand some basics of JPEG in order to use it most effectively on the Palmtop. This applies only if you have influence on the JPEG pictures you want to display, that is, if you have a software to produce the (or convert to the) JPEG format. The LxPic implementation of JPEG supports the baseline and progressive (DC values only) mode of operation. These modes are lossy, that is, when the JPEG picture is created, the informa- tion of the original image is reduced to save storage space. The amount of information that is lost may be determined by you. Before saving a JPEG file, a good software asks you for a quality factor. You may go down to low quality and still have a good picture on the palmtop, because most of the quality is lost anyway in the B&W representation on the Palmtop. JPEG supports grayscale and True Color images. True Color is represented by luminance and chromatic values instead of red, green and blue components. Furthermore, the luminance component may be more weighted than the chromatic component of a picture, again in order to save space. The luminance component of a JPEG image is nothing else than its grayscale representation and grayscale JPEG images only have the luminance component. LxPic extracts this luminance component and displays it. The chromatic components are ignored on the Palmtop. Hence you loose no information if you use only greyscale JPEG, but you save space. A True Color JPEG image with low quality may have a compress- ion rate of 0.2 bit/pixel, which is about 4K for a full screen CGA image. The same BMP image needs 24 bit/pixel, which is 120 times bigger. Hence you save about 99% of storage capacity and loose only little quality. Compression rates with greyscale JPEGs are even better. Compared to B&W PCX images, which use 1 bit/pixel, you still need only 20% of storage space. LxPic performs best with low quality greyscale JPEG images, which also produce the smallest files. The output speed is highly correlated with the quality, because the better the quality, the more time consuming calculation has to be done in the inverse discrete cosine transform (IDCT). 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� TECHNICAL 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic uses information provided by the VESA BIOS to access the hardware directly for better performance. Your VESA BIOS must provide a pointer to a 'bank switch subroutine' and must use a 64KB memory window. If this is not the case, LxPic starts in the standard VGA mode. According to VBE3 specification, VESA modes are no longer assumed to have fixed values. They are auto detected instead. Color reduction to 256 or 16 colors is done by using a very fast 'nearest color' algorithm based on a stuctured palette. The dither mode uses modified Floyd-Steinberg error diffusion, where the color error of a pixel is distributed to the adjacent pixels. Grey values are build from 30% Red + 59% Green + 11% Blue. This takes into account the luminescence of the colors instead of simply calculating Grey as R+G+B/3. A Grey value of 0 means Black, a Grey value of 127 means Grey and a Grey value of 255 means White. The inverse discrete cosine transform (IDCT) of JPEG uses an algorithm with only 4 multiplications, which I developed to make things go at some speed on the Palmtop's 80186. LxPic does not use internal bitmap representation because of restricted memory. It decodes directly to the screen via a line buffer. Any action leads to a completely new decoding of the picture. LxPic is developed on a HP200LX. It is written in Assembler. This language still exists and tends to produce small and quick code. LxPic is also a demonstration of what can be done in graphics with 20KB code in 64KB memory on a 8088. Think of what could be done with 1MB code in 64MB memory on a Pentium processor and compare it to today's reality! 훀ESTRICTIONS� - no uncompressed PCX files - no compressed BMP (=.RLE) files - no hierarchical and lossless JPEG modes of operation 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� PROGRAMMERS INTERFACE 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic has an internal interface for use with other programming languages or batch files. This interface allows you to set up virtual screens of any size at a desired position of your physical screen. These virtual screens overlay an already filled application screen and you may draw a picture or part of it into these virtual screens. You select whether you want to gain back control immediately after the picture has been placed on the screen, or whether you want to pass intermediate control to LxPic and get back control when the ESC key of LxPic is pressed. The application may then write around or even into the picture. Multiple pictures may be positioned or overlayed on one screen. If you want to put more than one color picture on a color screen, you either have to use a 16 or 24 bit screen mode or all pictures have to use the same color palette, otherwise only the colors of the last drawn picture are correct. The interface uses 16 bytes of the BIOS data area starting at the absolute address 00450h (40h:50h relative). The BIOS reserves these bytes for the cursor coordinates of the text pages 1-8 in an ASCII text mode. In graphic modes, these bytes are zeroed and unused. Since LxPic only works in graphic modes, these bytes may be used as an interface for LxPic. 횵NTERFACE SPECIFICATION� byte 00450h Interface selection flag. This byte is bit coded. If the whole byte is 0, the interface is not used 7 6 5 4 3 2 1 0 Meaning if bit is set | | | | | | |_| --------------------- | | | | | | | 01 = exit via DOS EXIT function | | | | | | |____10 = exit via RET FAR instruct. | | | | | | 11 = exit via RET instruction | | | | | | | | | | | |_______unused | | | | |_________unused | | | |___________unused | | |_____________display only first gif frame | |_______________allow zoom/scroll keys only |_________________pass interm. control to LxPic If bit 7 in the interface selection flag is set, all command keys are available except the mode keys {F2} and {F3}. If you only want to enable the zoom and scroll keys, set bit 6 as well. If bit 5 is set, only the first frame of a multi- image GIF picture is displayed. word 00451h Mode selection word. This word is bit coded. 10 9 8 7 6 5 4 3 2 1 0 = bit number | | | | | | | | | | | | | | | | | | | | | | Meaning if bit is set | | | | | | | | | | | --------------------- | | | | | | | | | | |___clear screen | | | | | | | | | |_____invert picture | | | | | | | | |_______center picture | | | | | | | |_________auto zoom | | | | | | |___________HP Palmtop resize | | | | | |_____________dither off | | | | |_______________text zoom | | | |_________________convert to B&W | | |___________________convert to greyscale | |_____________________display upside down |_______________________display file info box byte 00453h Zoom factor. Valid values are: -5 = 3% -4 = 6% -3 = 12% -2 = 25% -1 = 50% 0 = 100% 1 = 200% 2 = 400% 3 = 800% 4 = 1600% 5 = 3200% if the value is not valid, 0 is assumed. word 00454h Screen Pixel Column (SPC). If the SPC is not valid in the actual graphic mode, 0 is assumed. NOTE: LxPic output always starts at pixel columns, that are multiples of 8. word 00456h Screen Pixel Row (SPR). If the SPR is not valid in the actual graphic mode, 0 is assumed. word 00458h X0 offset (upper left column) within the picture word 0045Ah Y0 offset (upper left row) within the picture word 0045Ch Virtual Screen Width (VSW) in pixel. If VSW exceeds the Physical Screen Width (PSW), it is cut to fit on the physical screen. If you don't fill in this value, then VSW = PSW - SPC is assumed. NOTE: LxPic output always starts at pixel columns, that are multiples of 8. word 0045Eh Virtual Screen Height (VSH) in pixel. If VSH exceeds the Physical Screen Height (PSH), it is cut to fit on the physical screen. If you don't fill in this value, then VSH = PSH - SPR is assumed. 훀ETURN CODES� LxPic exits via DOS funktion 04Ch or a RET FAR or a RET instruction leaving behind return codes in register AL. The codes and their meaning are: 0 errorfree execution -1 (reserved for DOS) -2 file not found -3 invalid screen mode -4 unsupported signature/version of picture file -5 uncompressed PCX file -6 compressed BMP file -7 unknown GIF separator -8 invalid LZW code in GIF file -9 unsupported JPEG mode of operation -10 unsupported arithmetic coding in JPEG -11 unsupported Y sampling factor in JPEG -12 no default DQT table support in JPEG -13 no DNL support in JPEG -14 no OS/2 DIB support in BMP -15 insufficient memory 횯ETAILS� If LxPic finds at address 00450h a value other than 0, it takes it and puts back 0. That is, you always have to fill in the interface if you want to use it. If the value was not 0, LxPic checks for a valid graphic video mode. If no valid graphic video mode has been set by you, LxPic exits without action. See INTRODUCTION for valid graphics modes. Any change of the video mode or any clear screen, performed using BIOS or DOS functions, resets the interface to 0. That is, fill in the interface *AFTER* you configured the screen. If you selected 'center picture' in the mode word, the pixel row and pixel column values are ignored. If you selected 'auto zoom' in the mode word, the zoom factor, the pixel row and pixel column values are ignored. 훂URBO-C SAMPLE CODE FOR USE OF LXPIC VIA SYSTEM CALL� /*-----------------------------------------------------------*/ /* This example assumes that LXPIC.COM and DEMO.GIF are */ /* stored in the directory C:\PIC of your computer. */ /* Because of inline assembly, you have to use TCC from the */ /* command line, to compile this example */ /*-----------------------------------------------------------*/ #include #include #include /* function prototype */ int picture(char flag,int mode,char zoom,int spc,int spr,int x0,int y0,int vsw,int vsh,char *pic); /*-----------------------------------------------------------*/ main() { /* set a valid graphics mode */ asm mov ax,4F02h /* VESA function: set mode */ asm mov bx,0101h /* select VGA 640x480x8 */ asm int 10h /* set it */ /* your code goes here */ printf("this is DEMO.GIF"); /* output DEMO.GIF half sized at column 100, row 50 */ /* in a virtual screen of dimension 300 x 200 pixel */ picture(1,0,-1,100,50,0,0,300,200,"C:\\PIC\\DEMO.GIF"); /* your code goes here */ } /*-----------------------------------------------------------*/ int picture(char flag,int mode,char zoom,int spc,int spr,int x0,int y0,int vsw,int vsh,char *pic); { char lxpic[100]="C:\\PIC\\LXPIC "; /* full LXPIC pathname */ /* fill in the interface */ asm push ax /* save AX */ asm push bx /* save BX */ asm push ds /* save DS */ asm mov ax,0 /* load DS... */ asm mov ds,ax /* ...with segment 0 */ asm mov bx,0450h /* load bx with offset */ asm mov al,flag /* flag (use DOS EXIT) */ asm mov [bx+0],al /* set flag */ asm mov ax,mode /* load mode selection */ asm mov [bx+1],ax /* set mode selection */ asm mov al,zoom /* load zoom factor */ asm mov [bx+3],al /* set zoom factor */ asm mov ax,spc /* load pixelcolumn */ asm mov [bx+4],ax /* set pixelcolumn */ asm mov ax,spr /* load pixelrow */ asm mov [bx+6],ax /* set pixelrow */ asm mov ax,x0 /* load x offset in pic */ asm mov [bx+8],ax /* set x offset */ asm mov ax,y0 /* load y offset in pic */ asm mov [bx+10],ax /* set y offset */ asm mov ax,vsw /* load vir. scr. width */ asm mov [bx+12],ax /* set screen width */ asm mov ax,vsh /* load vir. scr. height*/ asm mov [bx+14],ax /* set screen height */ asm pop ds /* restore DS */ asm pop bx /* restore BX */ asm pop ax /* restore AX */ /* display the picture */ return(system(strcat(lxpic,pic))); } /*-----------------------------------------------------------*/ 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� DISCLAIMER AGREEMENT 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� LxPic is copyrighted freeware. If you bundle LxPic with your software or use the internal interface of LxPic, you have to ask me for permission and you have to mention LxPic and the copyright somewhere in your product. Users of LxPic must accept this disclaimer of warranty: "LxPic is supplied as is. The author disclaims all warranties, expressed or implied, including, without limitation, the warranties of merchantability and of fitness for any purpose. The author assumes no liability for damages, direct or consequential, which may result from the use of LxPic." 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�