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- Summary of Changes from version 4.0A to 4.0C
- --------------------------------------------
-
- BASIC program
- 1) Line 2 was changed to 'program configuration section'
- 2) Line 8 has not changed textually but has increased implicit
- meaning. If carrier detection is enabled and:
- a) carrier becomes lost, VIDTEX places the AUTOMODEM on hook
- and closes the RS232 KERNAL channel.
- [ Data Carrier Lost ]
- [ CBM AUTOMODEM - On Hook ]
- b) carrier becomes present, VIDTEX takes the AUTOMODEM off
- hook and opens the RS232 KERNAL channel.
- [ CBM AUTOMODEM - Off Hook ]
- [ Terminal Mode ]
- [ Data Carrier Present ]
- 3) Line 10 was added for
- 10 poke x,059 : rem user-defined 1200 baud rate, low byte
- 11 sys xxxxx
- Overview Changes
- 1) All terminal mode messages are enclosed with "[" and "]"
- replacing the "**" used in 4.0A.
- 2) Default disk file names are:
- a) vidtex.key Function Keys
- b) vidtex.ato Autolog
- c) vidtex.ast Autolog Auto Start BASIC program
- d) vidtex.txt Capture Buffer Save
- B Protocol
- 1) Send-Ahead Page number control was moved from BASIC program
- to Meta-Q.
- If an attempt to reference a send-ahead page is made and:
- a) the Capture Buffer is non-zero, the bell is sounded.
- b) the buffer is empty, send ahead pages are reallocated
- VIDEO
- The sounding of the bell is crisp and does not hum.
- Capture Buffer
- 1) The RAM Buffer was renamed the Capture Buffer
- 2) Meta-L Unedited load has been replaced with:
- a) Meta-K same as previous Meta-L
- b) Meta-L Read and convert a Commodore character set file
- NOTE: This function will not convert CBM SG4
- representations back to VIDTEX SG4 characters.
- 3) The Capture Buffer Full message was changed to
- [ Capture Buffer Full ]
- [ Press CTRL-Q to continue ]
- The bug in 4.0A that disabled reception of data
- has been fixed.
- Autolog
- 1) Auto Logon was renamed to Autolog.
- 2) Meta-I nolonger causes the disk drive motor to run continuously
- during the creation session.
- 3) Meta-J will now only execute Autolog files that contain the
- proper header and version number information. An update
- program has been provided to convert 4.0A Auto Logon files
- to the new format
- Function Keys
- 1) At the Meta-F Function key menu, you can type RETURN to
- exit back to terminal mode.
- 2) Meta-F Load Definitions will now only load Function Key files
- that contain the proper header and version number information.
- An update program has not been written.
- Disk Directory
- The Meta-* prompts for "Enter Search String:" to allow for
- the use of "*" and "?" for wild card directory searches.
- Typing carriage return defaults to the entire directory.
- Meta-Q
- 1) The Flow entry was broken out into FLOW XMIT and
- FLOW RECV to allow the user to disable flow control
- transmissions by VIDTEX (FLOW XMIT) and to disable recognition
- of received flow control (FLOW RECV, same as 4.0A's FLOW).
- 2) The addition of item 8 for direct user control of the number
- of Send-Ahead pages. Option "N" is for No pages (1 page)
- and "Y" for Yes pages (8 pages).
- Meta-
- The dialing menu has been enhanced to include Auto Dial,
- Auto Answer, Off Hook, On Hook, and exit Meta-.
- Meta-M
- Meta Menu has been updated to reflect the new command set.
- Help Menu
- The Help menu has been updated to show every control character
- in the ASCII set that cannot be obtained by holding CTRL and
- pressing a letter.
- Error Recovery
- 1) The equivalent of the BASIC RUN/RESTORE warm start is now
- available by typing Meta-A/RESTORE which does a warm start
- on VIDTEX.
- 2) If the processor executes a BRK instruction, "[ CRASHED ]"
- is displayed on the third line of the video display and
- a warm start is attempted (the message "[ Terminal Mode ]"
- indicates a warm start was attempted).
-
- S1650 AUTOMODEM Menu
-
- 1 Auto Dial
- 2 Auto Answer
- 3 Manual Off Hook
- 4 Manual On Hook
- 5 Exit
-
- Enter digit:
-
- [ AUTOMODEM - Off Hook ]
- [ AUTOMODEM - On Hook ]
-
- OK
-
- Set O-A Switch to O, T-D to D, H-F to F
- Enter Phone Number:
-
- Set O-A Switch to A, T-D to D, H-F to F
- Waiting for Call
-
-
- vidtex.ato
- vidtex.key
- vidtex.txt
-
- [ CRASHED ]
-
- [ % VTXCMP - Communications Problem, Please Stand By... ]
-
- [ ? VTXCMF - Communications Failure, Returning to Terminal Mode ]
-
- KEY DEFINITIONS
- CTRL Control key
- COMMODORE Meta key
-
- RUN/STOP Control C
- English Pound Escape
- CRSR down Line Feed
- CRSR right Tab
- INST/DEL Backspace
-
- CTRL and ! is ( is
- NUL Pound \
- ) -
- INST/DEL DEL '
- , FS ; GS
- ^ RS _ US
-
- F 1 to F 8 Function Keys 1 to 8
-
- Local Color Control
- Meta and , Text
- . Background
- / Border
- Key <RETURN> for terminal mode
-
- Old Autolog
-
- Creating New Autolog
-
- Disk Catalog
- Enter Search String:
-
-
- [ Ram Buffer Full! ]
- Capture Buffer NOT Empty
-
- Meta Key Functions
- Capture Buffer
- O Open C Close
- Z Zero G Get Screen
- D Display P Print
- K Load ASCII L Load CBM File
- U Unedited Save S Save CBM File
- V Transmit Y Transmit W/Prompt
- Used: 0 Free: 0
-
- Local Control
- E Enable Clean B Break Words
- R Printer On T Printer Off
- : Print Screen CLR Clear Screen
-
- Miscellaneous X Exit
- A Abort F Function Keys
- H Help M Menu
- I New Autolog J Old Autolog
- N Scratch File * Catalog
- Q Query/Set Status
- * CBM AUTOMODEM Menu
-
- //comment: Displayed when VIDTEX enters terminal mode from 1) Automodem
- //menu, 2) pressing Meta-A with RESTORE (warn start on VIDTEX)
- //Notably: ON Hook does not return to terminal mode since any text typed
- //is not transmitted, only Meta keys will be active (since there is nothing
- //being sent or received (the phone is on hook))
- [ Terminal Mode ]
-
- Autolog Auto Start
- Entering Autolog Mode
- using : <file name is displayed here>
-
-