home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
ftp.whtech.com
/
ftp.whtech.com.tar
/
ftp.whtech.com
/
club100
/
cat
/
vt100.exe
/
lha
/
VTDOC2.DO
< prev
next >
Wrap
Text File
|
1991-08-07
|
12KB
|
256 lines
the screen.
F8 will return to TELCOM. The screen will not clear, so any
prompt you had at the cursor will remain.
CODE e (e for exit) will return to TELCOM, but it will clear the
screen before doing so.
LABEL will bring up the row and column number of the present
cursor location in the bottom left corner of the screen. This
display will disappear automatically as soon as the screen needs
to scroll, or can be erased immediately if it covers important
text by pressing PASTE
PRINT -the PRINT function key- will print the screen to the
printer if it is attached and turned on. If no printer is
connected to the parallel port, no action is taken. The screen
printed is the full 80x24 screen of the VT100, not just the small
Model 100 window.
|-----F6------|
|-------F5-------|------F7-------|
c1 c21 c41 c61 80
____________________________________
| | | | | |
| | | F4
| F1 | | | |--
| (Section 1) | (Section 4) ||| PASTE
| | | | |||
--------------Line 8--------------\/ key
| | | | | 4
| | | to
| F2 | | | | r
| (Section 2) | (Section 5) | o Resume
| | | | | w
--------------Line 16------------- s
| | | | |
| | | d
| F3 | | | | o
| (Section 3) | (Section 6) | w
| | | | | n
--------------Line 24-------------
FIGURE #1
Moving Around the VT100 Screen
GRAPH 'a' will send a CTRL A to the host computer. A CTRL A is
used in some editing programs, including command line editing on
the VAX to switch between insert and replace mode. Since the
SHIFT Left Arrow generates the same code as CTRL A, and has been
mapped to become the PF4 function key (see below), some way is
needed to generate a CTRL A to send to the host. The GRAPH a
will send such a code (ASCII Code 1).
CODE 'x' toggles between XON/XOFF enabled, and disabled. It may
never be required. It was put into 100/100, because some
electronic switches interpret the XOFF character sent out as an
actual character and invalidates the choice. It is usually only
required at speeds greater than 300 baud, using an external
modem, where the screen on the Model 100 cannot keep up with the
characters received and when the switch being used sends a full
screen of information, rather than a single line prompt, before a
choice is allowed. Pushing CODE x will turn off XON/XOFF if it
is on, and turn it on if it is off. When returning to TELCOM,
whichever mode has been set using the STAT command will be used,
regardless of the toggle state inside the VT100 emulator.
GRAPH 'f' enters "fast mode". In order to speed up performance
characters received from the host are not echoed to the screen
in. Instead only cursor movement and the column/row display in
the lower left corner are shown. Transmission can then be
stopped and the screen viewed with the function keys. The PASTE
key exits fast mode.
GRAPH NUMBER KEYS produce the code of the number keys on the
VT100 keypad, if in application mode. The number keys used here
are not the ones at the top of the Model 100, but the ones used
to generate numbers when the NUM key is depressed. The keys
produce the keypad equivalents in application mode, not the
numbers. The keypad keys on a VT100 produce two different sets
of code when pressed, either a special application code, or the
numbers. Application mode is typically used in applications like
word processing and editing where rather than produce a number, a
function is produced when the key is depressed. If you are in an
application that uses the keypad to produce numbers, press the
NUM key and use the same keys. A VT100 will automatically switch
between application mode and numeric mode for these keys, but
100/100 will not. If you are using the GRAPH key combination and
it doesn't seem to be working, try the NUM key instead.
One exception to the GRAPH number key is the '1' (one) or 'j'
key. Unfortunately, GRAPH j is not recognized by the Model 100
as a key being pressed, therefore the user must press GRAPH SHIFT
J. Since the three key combination can be somewhat awkward,
GRAPH 'h' will produce the same code. Either combination will
work. Both combinations are less than desired and may cause the
user some consternation until experience makes their use a habit.
Until then, the user is likely to press GRPH j more than once and
wonder why no response is obtained. The limitation of the Model
100, however, makes this situation unavoidable.
In addition to the number keys, GRPH . (period) will produce
the keypad period, GRPH , (comma) will produce the keypad comma,
GRPH ' (single quote) the keypad enter, and GRPH / (slash) will
produce the keypad minus. The slash was chosen rather than the
minus sign, for two reasons; one was its proximity to the other
keys, rather than on the top row of the keyboard. The other is
that the GRPH - combination on the Model 100 is used to produce
the ASCII code 96, the backslash character. The GRPH ' (single
quote) was chosen to represent the keypad ENTER key since it sits
right next to the ENTER key on the Model 100.
CODE SHIFT R will reset the screen. The screen is cleared, the
cursor is homed, top and bottom margins are reset to 1 and 24
respectively, and tab stops are set to their defaults.
PF Function Keys are produced by using the SHIFT Arrow Keys.
PF1 -sometimes the GOLD key on the VT100- is emulated with the
SHIFT Left Arrow key.
PF2 is SHIFT Right Arrow key
PF3 is SHIFT Up Arrow key
PF4 is SHIFT Down Arrow key
The Key Layout for the VT100 keypad keys looks like the
following, where the top characters in the box represent what is
on the Model 100 key and the bottom most character in the box,
between the '- -' respresents the keypad equivalent on the VT100
keypad.
---------------------
|SHFT|SHFT|SHFT|SHFT|
Model 100 Cursor Keys -> | <- | -> | /\ | \/ |
(Use SHIFT + Cursor Key) | PF1| PF2| PF3| PF4|
---------------------
-------------------
| & | * | ( |
| 7/7 | 8/8 | 9/9 |
| -7- | -8- | -9- | Use GRPH + Key
----------------------
| | | |
| U/4 | I/5 | O/6 |
| -4- | -5- | -6- |
-------------------------------------
| |SHIFT| | | : | " |
| H | J/1 | K/2 | L/3 | ; | ' |
| -1- | -1- | -2- | -3- | |-ENT-|
-------------------------------------
| | < | > | ? |
| M/0 | , | . | / |
| -0- | -,- | -.- | --- |
-------------------------
(Minus)
FIGURE #2
Keypad Emulation Keys
SECTION II
LOADING 100/100
100/100 is loaded exactly as any other machine language program
on the Model 100. Below is a brief summary, but if you need
further information, please consult your Model 100 manual.
To load from Cassette tape:
Enter BASIC and with the recorder appropriately set and turned on
type:
CLEAR 256,59554
CLOADM"VT100"
When the OK prompt returns, the program has been loaded into high
memory. Then type:
SAVEM"VT100",59554,62960,59554
This command will save a copy of the program in low memory for
later loading should the copy in high memory become corrupted.
If you don't wish to save a copy in low memory, type the
following command instead:
SAVEM"VT100",59554,59554,59554
This will put an entry into the directory so that the program can
be started by putting the cursor over the file name and pressing
ENTER. If you use another machine language program in the same
space, however, VT100 will be corrupted and must be loaded from
tape before using it again.
On the tape are other utility programs for 100/100 as well.
Also, to insure that you receive a usable copy, all programs are
duplicated after the last utility program on the tape media.
USING 100/100
To start 100/100, simply put the menu cursor over the file name
"VT100" and press ENTER. In a fraction of a second, it defines a
few beginning parameters, including the F6 and F7 function keys
for TELCOM. The TELCOM screen will then appear, exactly as if
you had entered TELCOM directy except the 100/100 title line will
be displayed at the top of the screen. If the Model 100 beeps
when you try to run the program, go into BASIC and type the CLEAR
command as defined above to clear the proper memory area. Then
start the program again.
At this point you are not actually in the VT100 program, but
rather in the built-in TELCOM application you are used to using.
The VT100 title screen is displayed only so you know VT100 is
loaded and ready to go. Since you are in normal TELCOM, you can
set the parameters with the F3 STAT command, just as you would in
TELCOM. See your Model 100 owners manual for parameter
descriptions. If you are using the built in modem for example,
you would press F3 and then after receiving the STAT prompt, type
in M7I1E or something similar.
You can use the FIND and autodial and auto logon files that you
have created exactly as you always have with TELCOM. After you
press F4 or your automatic procedure has made a connection, you
can press F6 to enter VT100 mode. There is a pause of a second
or two, and then the label line will disappear and the cursor
will go to the top left corner and you are in VT100 mode.
Characters will now scroll horizontally as you reach column 40.
The best time to press F6 and enter VT100 mode is immediately
after pressing F4. A few characters may be lost if done while
characters are still transmitting, however, no other ill effects
will be experienced.
You could wait until after you log on to enter VT100 mode, but it
is best to enter VT100 before any initial command files (LOGON
files) are executed by the host since these files often request
the terminal identify itself. If you are in VT100 mode when the
host makes this request, your portable will respond with the
VT100 response so the host will recognize you as a VT100.
Otherwise, you may have to issue a command manually to tell the
host you are a VT100. On a VAX, you type SET TERM/VT100. If an
application fails to run and gives the error message that a VT100
is required, it usually means you must use the SET TERM/VT100
command. If you are on a host other than a VAX, you should
determine what the equivalent command would be.
If you are using an external modem and dialing manually, you can
enter VT100 mode before dialing. Enter TELCOM, set the
parameters, press F4 and then F6. Now dial and connect exactly
as in TELCOM.
In VT100 mode, the screen will scroll horizontally by 20
characters when column 40 is reached, putting column 40 exactly
in the center of the screen. At column 60 the characters again
hit the right side of the screen and a second scroll of twenty
characters occurs. Each scroll causes the screen to jump
somewhat and it can be difficult at first to read the text as it
is displayed. Don't be discouraged. As you get used to the