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-
- Documentation for PHOTO.COM & VIEW.COM ....
-
- *****************************************************************************
- This software may be of special use to CAD program users in that a drawing
- may be extracted as a screen file from the CAD environment,transfered and
- displayed without the need to have the CAD package installed on the receivers
- system.
- *****************************************************************************
-
- PHOTO.COM is a memory resident (TSR) program for copying
- screen images to a file.
-
- Compatable screen modes are:
- 80x25 TEXT (mode 3) pages 0 thru 3
- 320x200 CGA (modes 4 and 5)
- 640x350 EGA (mode 16) pages 0 and 1
-
- To install: PHOTO [d:][path][filename]
- A numeric extension starting at .001
- will be appended to the filename.
-
- To save a screen to filename.nnn tap the left-shift key twice.
- Note: Capture of an EGA screen will took approx. 15 seconds on a 10Mhz
- 286 machine with a 65msec hard disk while capture of a text screen takes
- only a second or two ! Also.. PHOTO creates and deletes
- filename.000 on the drive and path indicated when it is installed. Be
- certain that you don't have an overlay file (Turbo Pascal) by the same
- name that might be over-written.
-
-
- VIEW.COM is the compliment of PHOTO.COM as it will display a file created
- by PHOTO.COM
-
- Usage: VIEW [d:][path][filename[.ext]]
-
- Where "filename" is a file created by PHOTO.COM
-
- ***** PRESS THE ESCAPE KEY TO EXIT FROM VIEW.COM *****
-
- -------------------------------------------------------------------------
- Recorded file structure :
- byte 1 = video mode as reported by bios (used by VIEW)
- byte 2 = active display page as reported by bios (not used by VIEW)
- bytes 3 thru 20 = 'SCREEN IMAGE FILE ' ( string with a trailing space)
- VIEW checks the 'SC' to determine if the file was produced by PHOTO (this
- means you could rename TESTPIX.005 to MYSCRN.TST and have it properly
- displayed).
-
- text files are 4k+20 bytes (direct video memory image)
- cga "" "" approx 16K "" "" "" ""
- ega "" "" approx 112k
-
- The EGA file organized as 320 bytes per line, low nibble=even pixel dots,
- high nibble= odd pixel dots. 350 lines total.
-
- Please keep in mind that the screen files may be compressed to a fraction of
- their size by using an ARCHIVE program.
-
- Also note that PHOTO does not pass on to a screen file any palette register
- settings !
-
- -----------------------------------------------------------------------------
-
- PHOTO.COM uses,in part, code contained in TSRDEMO2.ASM (available on
- electronic bulletin boards under the archive file name: TSRDEMO2.ARC).
- TSRDEMO2 was written by :
-
- Thomas Brandenborg
- Lundbyesgade 11
- DK-8000 Aarhus C
- Denmark
-
- Author Brandenborg permits his code to be used if acknowledgement is given.
- The credit to his work is well deserved !
-
- I urge the user of PHOTO and VIEW to find the following public domain
- software - available on many IBM-PC bulletin boards :
-
- EGAPRTSC.ARC - contains .asm and .com files for doing a EGA/CGA graphics
- print-screen function.
-
- STACKEY2.ARC - having STACKEY2,PHOTO,VIEW and the contents of EGAPRTSC will
- allow you to do batch printing of screen files to a dot matrix
- printer (and much more).
-
- It is my intention that both PHOTO.COM and VIEW.COM be freely distributed
- for private and commercial applications without charge.
-
- Roger Marin
- 6611 N.E. Alberta St.
- Portland, Oregon, 97218
-