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- PLINK65.DOC
-
- PLINK is a CP/M transient command which allows the user to
- communicate with a remote computer that is not running a special
- program. It allows the user to selectively copy received text
- into memory and to later write the text onto a CP/M disk file.
- It also allows text to be transmitted from a disk file to the
- remote computer a line at a time, suppressing the line feeds and
- waiting for a trigger character such as a line feed from the
- remote computer before sending the next line of text. Optionally
- the trigger character may be a BELL code, an X-ON, or text may
- be sent without pause including line feeds after the carriage
- return. Note that none of these options work for sending to a
- DEC which uses an X-OFF, X-ON protocol when it gets more input than
- it can handle.
-
- This program currently supports the following modems or computers
- via conditional assembly:
-
- 1. PMMI modem
- 2. Any serial I/O board (TUART included)
- 3. TRS-80 model 1
- 4. TRS-80 model 2
- 5. Heath H8 with 8251 UART at port 330q
- 6. D.C. Hayes 80-103A or Micromodem 100
- 7. MITS 2SI/O board, ports 10h &11h = console, 12h & 13h = modem
- 8. Intel SBC or National BLC multi-bus boards using 8251 USART
-
-
- Originally written by L.E. Hughes (EDCAM) in July, 1977. Many
- modifications have been made since this time, as shown in the
- following summary.
-
- Fixes/updates (in reverse order to minimize reading time):
-
- June 26, 1981. Added message when exiting if last buffer was
- not saved. Ted Shapin.
-
- June 14, 1981, by Keith Petersen, W8SDZ. Changed port
- equate to 'equ' instead of 'set'. ASM doesn't like 'set'
- when later conditionals are based on a label defined that
- way.
-
- June 7, 1981, by Tom Jorgenson (CP-MIG). Changed CP/M
- origin from being via SETs to referenced to BASE, added
- TRUE/FALSE rather than numeric values (for readability),
- changed ^Q function to ^W (write) because some systems
- (notably Micronet) use ^S/^Q to suspend/resume output,
- changed page 0 references in TRS routines to use
- BASE equate properly, changed PORT equates to default
- to TRUE, reinserted Heath equates, and cleaned up code
- in several places.
-
- June 7, 1981, by Keith Petersen, W8SDZ. Fixed problem with
- equates which prevented assembly by 'ASM' when TUART option
- was selected.
-
- June 6, 1981, by Keith Petersen, W8SDZ. Added version number,
- cleaned up file.
-
- May 12, 1981, by T. Shapin. Added code for 8251 USART on Intel
- SBC or National BLC multibus board with modified CP/M origin.
- Added prompt to signon. Added toggle to ^Y to save or ignore
- incoming text. Added ^C abort on file name response.
-
- (for earlier update info, see PLINK65.AQM. Use USQ.COM to
- unsqueeze)
-
-
- PLINK currently supports two way transfer of text files between
- the CP/M disk and the remote computer. The following control
- codes may be initiated from the console keyboard:
-
- Control-E Exit PLINK to CP/M "warm-boot".
-
- Control-T Transmit ASCII file to remote system, asks for
- drive (A, B, etc.) and filename.typ.
-
- Control-C Aborts transmition of file to remote system.
-
- Control-Y Switches between saving and ignoring incoming
- ASCII data in RAM buffer, for later transfer
- to disk.
-
- Control-Q Writes RAM buffer to disk, and asks for drive
- and filename.typ.
-
- Del (delete) Backspace when in command mode (e.g. ^T or ^Q).
-
- Control-U Aborts current line when in command mode.
-
- (Note: all other control codes are passed to modem output, and
- may be interpreted by the remote system as various control
- functions.)
-
- When sending to another computer, PLINK waits for a trigger
- response after sending each line before it will send the next.
- The following "trigger" equate is set to "lf" (linefeed)
- by default. An optional trigger char may be passed via fcb1
-
- ie: PLINK B will set trigger to "bell"
-
- The following options are allowed:
-
- 1. B = bell 07h
- 2. X = xon 11h
- 3. U = upload no trigger check at all and send line feeds
-
- any other ascii character may be passed through fcb1.
-