NUTERM.DOC

The program, nuterm.bin, is a bare bones terminal program, written in BASIC,
to illustrate the technique of saving an ASCII text file to diskette without
sending holdoffs to the host (CONTROL S, e.g.).  Because no error checking
protocol is used, the method is not
recommended for program files.  But it
produces minimum online time.  If contiguous characters are received, they re
displayed and saved to a sequential file in essentially real time.  No buffer,
other than the 255 byte, RS-232 receiver buffer, is used.  Thus, since the
program ma be easily modified, the addition of a capture buffer will permit
both saving to diskette and buffer capturing for later printing.  It has been
tested with a C-64C, a 1670 modem, and a 1541-II drive at 300 and 1200 baud.
When LOADed and RUN, it transfers 515 bytes of ML to the region from $C000 to
$C202.  The BASIC program itself occupies $0801 to $0D6C.  Any line number
greater than 20 and less than 2020 may be deleted, edited, or added.  If the
program is reSAVEd, be sure to make line 10 end in GOTO 2020 rather than GOTO
0020.  Since the program was designed for use with CIS, F2$, F4$, and 6$ are
string variables which should be redefined as 'phone number, user ID, and
password (unless your password happens to be number/modem).  After answering
prompts for FILENAME of file to be SAVEd and baudrate, pres F1 to enter
terminal mode.  You are then in an ML loop.  You would usually press F2 to dial
he CIS 'phone number, press the STOP key for a control C when connection is
made, and follow with F4 for user ID and F6 for password.  Press F3 to return
to menu mode.  If a text file is to be SAVEd to diskette, request to REAd the
file.  After entering the CIS FILENAME,
don't press return.  Press F5 instead.
You should see the text on the screen and be SAVing to diskette.  The sporadic
breaks in printing to the screen, during drive read/write head activity, do not
represent hold offs sent to the host.  As soon as the drive sets the program
free, the characters that had built up in the receiver buffer are rapidly read
out.  At the end of the file, first press F7, then RETURN.  ONLY THE F7 KEY IS
OPERATIVE DURING A SAVE.  PETASCII/ASCII and ASCII/PETASCII conversion is used.
Again, this is just a demonstration of a technique whih may not be in common
use.  The program hardly quallifies as a finished product.  It was designed for
ease of modification.  All suggestions,
criticisms and comments are welcome.
 
                   John Iannetta
 
                   73510,2152