home *** CD-ROM | disk | FTP | other *** search
-
- LIST Version 6.2a
- May 14, 1987
-
- Addendum
- --------
-
- 1. Reassigning keys
-
- This information is offered to those of you who wish to
- modify LIST in special ways. You do not need this
- information to use LIST.
-
- LIST performs a function for every character that can be
- entered at the command line prompt. There are 128 regular
- characters and 131 extended characters. The regular characters
- are numbered from 0 to 127, and they include the letters A-Z,
- a-z, the numbers, and the rest of the usual single characters
- found on your keyboard. The extended characters represent
- special function keys and combinations of keys, such as F1,
- alt-X, ctrl-A, and the cursor positioning keys.
-
- The WHAT table in LIST has a one byte entry for each of the
- characters. This byte is a number from 0 to 53 that represents
- the identification of a routine that performs a function.
-
- For example,
-
- - the ESCape key has a value of 27 (hex 1B) and its
- value in the WHAT table is 16 (10 hex). Routine number 16
- is called "Done". The "Done" routine exits to DOS.
-
- - the Q key has a value of 81 (51 hex) with a routine value
- of 15 for the "Close" routine. The "Close" routine ends
- viewing of the current file and tries to display the next
- file, i.e. wildcards used for the filename. There is also
- a lower case letter q, so be sure to change both entries.
-
-
- To change the function that a command character performs, you
- change the value in the WHAT table for the routine that the
- character invokes.
-
- For example, to change the ESCape key to act like the Q key,
- you change the routine value for ESCape from 16 (10 hex) to
- a 15 (0F hex).
-
- To find the location of the routine value in the WHAT table,
- first determine the value of the character, e.g. ESCape is
- 27 (1B hex), and then add that to the location of the WHAT
- table (362 hex); or, 1B + 362 = 37D hex. Finally, use DEBUG
- to change the byte at that location (37D hex) from a 10 hex
- to a 0F hex.
-
- For example,
-
- debug list62a.com ; use appropriate file name
- -e 37d 0f ; change ESC to routine 15
- -w
- -q
-
-
- The routine ids are:
-
- Value Key(s) Title Description of function performed
- ----- --------- ---------- ------------------------------------------
- 0 Beeper Error, undefined command
- 1 alt-A AltA Toggle APXCORE/DD/TV interface
- 2 alt-E AltE Toggle EGA 43-line mode
- 3 alt-F AltF Get new filespec
- 4 alt-J AltJ Toggle Junk filter
- 5 alt-L AltL Toggle pre-Load
- 6 alt-T AltT Toggle TABs expansion
- 7 alt-W AltW Toggle Window
- 8 alt-X AltX Exit to DOS, restore screen
- 9 U/up Back Position to previous line
- 10 End Bottom Position to end of file
- 11 F5 ChgBack Change top/bottom line background color
- 12 F6 ChgFore Change top/bottom line foreground color
- 13 c-home CHome Position to specified line number
- 14 alt-C Clone Rewrite LIST.COM with new options
- 15 Q Close Quit current file, display next file
- 16 ESC F10 Done Exit to DOS
- 17 N down Down1 Position to next line
- 18 X DoneX Exit to DOS, clear screen
- 19 alt-H DumpHex Toggle Hex display mode
- 20 8 Eight Leave hi-bit
- 21 \ Find Search for text, any case matches
- 22 F2 FindBack Change Find/Scan background color
- 23 F4 FindFore Change Find/Scan foreground color
- 24 alt-M Flash Toggle monitor rescan testing
- 25 K Flush Toggle keyboard flush (type ahead)
- 26 alt-G GotoDOS Invoke DOS command (shell)
- 27 L left Left Scroll left 10 columns
- 28 - MinusNum Position back by number of lines
- 29 enter NxtPage Display next page
- 30 + PlusNum Position forward by number of lines
- 31 P Print Print current screen or marked lines
- 32 F1 H ? Help Display Help screen
- 33 F3 ReScan Search for next occurance of text
- 34 R right Right Scroll display right 10 columns
- 35 alt-R Ruler Display ruler marks on top line
- 36 / Scan Search for text, same case
- 37 F9 ScanBack Search for previous occurance of text
- 38 c-left Scroll0 Reset scroll to column 1, full left
- 39 F7 SetBack Change normal line background color
- 40 F8 SetFore Change normal line foreground color
- 41 7 Seven Strip hi-bit
- 42 C Share Toggle closing of files
- 43 * Star Toggle special * filter
- 44 Home Top Position to top of file
- 45 up Up1 Position back one line
- 46 W Wrapper Toggle display of wide lines
- 47 alt-D WriteFile Write marked lines to a file
- 48 alt-M MarkLines Mark top line of display
- 49 alt-U UnmarkLines Unmark lines
- 50 alt-B MarkBottom Mark bottom line of display
- 51 ctrl-pgup Review Display previous file
- 52 ^ RevFind Like Find but initiates search backwards
- 53 v RevScan Like Scan but initiates search backwards
-
-
-
- 2. Helpful locations for DEBUG:
-
- 035E WHAT eye-catcher
- 0362 value of routine for character 0, nul (00 hex), Beeper
- 0372 value of routine for character 16, dle (10 hex), Beeper
- 0382 value of routine for character 32, space (20 hex), NxtPage
- .
- .
- .
- 03D2 value of routine for character 112, p (70 hex), Print
-
-
- Extended characters:
-
- 03E2 value of routine for character 0, undefined (00 hex), Beeper
- 03F2 value of routine for character 16, alt-Q (10 hex), Beeper
- 0402 value of routine for character 32, alt-D (20 hex), WriteFile
- .
- .
- .
- 0462 value of routine for character 128, alt-F9 (80 hex), Beeper
-
-
- You can determine the value of a character (or key sequence) by
- referring to your BASIC manual (appendix G usually).
-
-
- 3. Supplied files.
-
- Sample files for modifying LIST are supplied. To apply a
- modification, the DOS DEBUG program must be available in
- the current PATH. Enter the name of the modification (.BAT)
- file and DEBUG will be invoked to apply the modifications.
-
- ESC2Q BAT Changes ESCape to act like Q
- ESC2Q DBG Input to DEBUG
-
- UNBEEP BAT Disables sounds and beeps
- UNBEEP DBG Input to DEBUG
-
- MARKMOD DBG Changes attribute used for marked lines
- MARKMOD BAT Input to DEBUG
-