®RM60¯

LITES.COM
Command

Jeff Prosise			1989 No. 5 (Utilities)


Purpose:	Replaces an RS-232 breakout box by 
displaying the status of the DTR, DSR, RTS, CTS, DCD, and RI 
pins; also indicates the data rate, parity, number of data 
bits, and number of stop bits of the serial port being 
monitored.	

Format:	LITES [comport] [U]
	
Remarks:	LITES is a memory-resident utility and may 
be loaded either at the DOS prompt or as part of an 
AUTOEXEC.BAT file.  If no communications port is specified, 
the default comport monitored is COM1.  After loading, 
alternately pressing Alt-L (the default hotkey) pops up and 
cancels the onscreen display, which is located (by default) 
in the upper right corner of the screen.  LITES can be 
deinstalled by entering it with the optional u (or U) 
parameter, which  simplifies changing the comport to be 
monitored.  (Do not precede the U with a slash.)

	The various default options of LITES can be changed 
with DEBUG.COM.  The procedure is explained in the printed 
article, which also contains full tables of scan codes, 
shift masks, colors, and the like.  The available patch 
points, bytes allocated, and default values are listed 
below. 

	

Function	                Address	  Bytes     Default
	
	Hotkey ID String	            0155h	    8	        "Alt-L"
	Hotkey Scan Code	            0160h	    1	         26h
	LITES Video Attribute	       0161h	    1	         70h
	LITES Display Row Number	    0162h	    1	         0
	LITES Display Column Offset	 0163h	    1	         0
	Refresh Frequency Counter	   0164h	    1	         2
	Default COM Port Designator	 0165h	    1	         0
	Hotkey Shift Mask	           01A0h	    1	         8

	Available for downloading from PC MagNet (see the 
LITES by Modem sidebar), LITES.COM is already compiled and 
ready to run.  LITES.BAS will automatically create LITES.COM 
when run once in BASIC.  To create LITES.COM from the 
LITES.ASM source code requires use of a macro assembler (IBM 
or Microsoft, Version 2 or later) and the following 
commands:

	MASM LITES;
	LINK LITES;
	EXE2BIN LITES LITES.COM;