BBL.SYS
			  Written by H. D. Todd
			   Wesleyan University
			      August, 1992
			hdtodd@mockingbird.wesleyan.edu


	BBL is a device driver that displays characters written to it as
large block letters on the screen.  It uses no interrupts and is a
passive, output-only device driver, acting only when it receives
characters.  Distribution files for BBL:

00README.TXT
	This file.

BBL.SYS
	The BBL device driver, to be loaded by config.sys.

BBL.ASM
	The source file for the BBL device driver.

MAKEFILE    
	The make file for BBL.
		make		makes BBL.SYS
		make doc	makes the doc files
		make test	makes the testing program
		make clean	removes files for fresh remake

BBL-TEST.EXE
BBL-TEST.C  
	Testing program for BBL.   Demonstrates the commands and
	operating modes for BBL.  The .EXE version is compiled using
	only 8086 instructions.

BBL-DEMO.BAS
	Demonstrates the use of BBL in BASIC (written for QBASIC but
	should be compatible with others, e.g., GWBASIC).

BBL-MAN.TEX
	The source file for the BBL user's manual.  Written in LaTeX.
	Uses MANPAGE.STY

BBL-PLM.TEX
	The source file for the BBL programmer's logic manual.
	Written in LaTeX.

BBL-MAN.PS
BBL-PLM.PS
	Postscript versions of the user's manual and 
	programmer's logic manual.

MANPAGE.STY
	Style description for Unix-style man pages for LaTeX.  Used in
	BBL user's manual.

TSTBBL.ASM
	TASM source code for prototyping techniques used to 
	display chars in BBL.  Useful for debugging purposes if
	you decide to tinker with BBL source code.

TSTCMD.ASM
	TASM source code for prototyping techniques for processing
	command-line options for the device driver.  Useful for
	debugging if you decide to add command-line options.