home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Night Owl 6
/
Night Owl's Shareware - PDSI-006 - Night Owl Corp (1990).iso
/
001a
/
com_and4.zip
/
OVERLAY.DOC
< prev
next >
Wrap
Text File
|
1990-03-22
|
2KB
|
42 lines
-------------------------------------------------------------------------------
900322 COM-AND Script Overlay Page 1
-------------------------------------------------------------------------------
Included in this release is a file OVERLAY.ARC. It contains:
-------------------------------------------------------------------------------
OVERLAY.ASM
Assembler source file. Compile with "MASM OVERLAY;". This file
defines two overlay routines, one to display a string through
BIOS, and a second to return the segment address.
OVERLAY.OBJ
MASM output from compilation of OVERLAY.ASM. Link with the
command "LINK OVERLAY;" to create EXE file.
OVERLAY.EXE
LINK output. Not directly executable! Properly, would be renamed
to OVERLAY.OVL to prohibit running from the DOS prompt. Convert
to COM format with the command "EXE2BIN OVERLAY.EXE OVERLAY.COM".
OVERLAY.COM
EXE2BIN output. Not directly executable! Would be renamed as
above to prohibit running from the DOS prompt.
OVERLAY.CMD
COM-AND script to use OVERLAY.EXE or OVERLAY.COM. This script,
when invoked, loads the OVERLAY.EXE (or COM if you change it),
and then invokes the two routines.
--------------------------------------------------------------------
Albeit not a very interesting function proper, OVERLAY demonstrates
the coding and use of machine language subroutines to COM-AND scripts.
Overlays may be coded to interface DOS and BIOS interrupts, or more
sophisticated modules such as the demonstration TALKER.ARC. Enjoy!