Term48 for the HPG(X)
By Bill and Steve Severinghaus
Library number: 1633
Bytes: 2683
ChkSum: # B23Dh
wseverin@uni.uiuc.edu
sseverin@uni.uiuc.edu


The purpose of Term48 is to provide a safe, fast, small, and versatile 
method of entry for the HP48 via a serial cable and a terminal 
program, or via infrared.  It is written entirely in Sys-RPL and can be 
run from any port; it was tested in ports 0 - 3 and should work in 
any other port.

	Commands:

	TRM
		{	->	}
		Starts the main interface program.  While in this 
program, the HP48 keyboard is rendered non-functional and all 
control is passed to the serial port.  The calculator remains in the 
serial mode specified by the user before entry.  TRM cannot be 
cancled from the keyboard; only a warmstart will cancel it.  Upon 
entry, TRM will set user flags 28 and 30, and clear user flags 29 and 
31.  TRM will remain active until these flags set to opposite positions. 

		The stack: the stack consists of up to 9 levels and the 
items in these levels are abbreviated to 37 characters.  If there are 
less than 9 levels, these levels will not be displayed.

		Data entry:  Using TRM, you can type anything you would 
normally be able to type on the command line of the calculator.  
because TRM uses built in parsing commands, it is CASE SENSITIVE.  
The prompt a is standard DOS like prompt; it displays the directory 
path.

	LS
		{	->	}
		Displays a list of files in the current directory and their 
sizes.

	CLS
		{	->	}
		Sends a clear character.

	DISPG
		{	GROB	->	}
		Takes a GROB from the stack and displays it on the 
terminal.

	EXIT
		{	->	}
		Sets the flags used by TRM to tell when to exit.

Bugs:
	If you have a bad argument on the stack and execute a 
command, there is a chance that it will leave a bunch of stuff on the 
stack.  This stuff is leavings from the palparse command and is 
harmless.

	You can delete the prompt

	If you delete too fast, it will look like the characters were not 
deleted.
_____________________________________________________________

	TRM is postcard ware: if you like it enough to send us a 
postcard, then do.  If you just want to e-mail us as to how much you 
like it, do that too.

Term48 can redistributed so long as the original documentation 
accompanies it.  It cannot be sold for profit (like anyone would do 
that.)