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 How to Save Color Registers After BSAVE of (PICEM) Graphics, Example 3
 
 Example 3: (SAV13.BAS)
 ----------------------
 
 To try this example in VBDOS.EXE:
 
   1. From the File menu, choose New Project.
   2. Copy the code example to the Code window.
   3. Press F5 to run the program.
 
 ' To run this program in the environment, you must invoke the
 ' environment with the /L switch to load the default Quick library:
 ' VBDOS.EXE /L for Visual Basic 1.0 for MS-DOS
 '
 ' REQUIREMENT: Must have PICEM210.EXE.
 ' This program uses PICEM210 to display a .PCX, .PIC, or .GIF
 ' file onto the screen so that Visual Basic for MS-DOS can then
 ' BSAVE it. It BSAVEs the picture and the color registers for SCREEN
 ' 13. The value of the variable YOURFILE must be written into
 ' the code. PICEM210.EXE should be in the default directory.
 
 DECLARE SUB ConvrtPic ()
 TYPE colortype
         red AS STRING * 1
         green AS STRING * 1
         blue AS STRING * 1
 END TYPE
 
 ' Use the following include file for Visual Basic 1.0 for MS-DOS:
 REM $INCLUDE: 'VBDOS.BI'
 CALL ConvrtPic()
 END
 
 SUB Convrt Pic()
 
 DIM inregsx AS RegTypeX
 DIM outregsx AS RegTypeX
 DIM colorbuf(255) AS colortype
 
 SCREEN 13
 
 SHELL "PICEM210 /e/v:l YOURFILE.pcx"
 ' Where YOURFILE.pcx is the filename of the pcx, .pic, or .gif
 ' graphics image to be converted.
 
 ' BSAVE graphics image.
 DEF SEG = &HA000
 BSAVE "YOURFILE.sav", 0, 64000
 ' Where YOURFILE is the filename for the converted graphic image.
 DEF SEG
 
 ' ROM BIOS interrupt to get palette registers.
 inregsx.ax = &H1017
 inregsx.bx = 0
 inregsx.cx = 256
 inregsx.es = VARSEG(colorbuf(0))
 inregsx.dx = VARPTR(colorbuf(0))
 
 CALL INTERRUPTX(&H10, inregsx, outregsx)
 
 ' BSAVE palette registers.
 DEF SEG = VARSEG(colorbuf(0))
 BSAVE "YOURFILE.reg", VARPTR(colorbuf(0)), 3 * 256
 ' Where YOURFILE is the filename for the BSAVEd color registers.
 DEF SEG
 END SUB