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- File LK250.HLP LK250 KEYBOARD UTILITY February 1993
-
-
- MSULK2.COM and MSULKV.COM are a "device drivers" for the DEC LK250 and LK450
- keyboards. This is a keyboard made by Digital Equipment Corporation (DEC)
- that can be substituted for IBM's keyboard on IBM PC/ATs and above, including
- PS/2s, and is also the keyboard used on the DEC VAXmate. MSULK2.COM is to be
- used on IBM equipment, MSULKV.COM is for the VAXmate. The technical
- requirement is a machine with a bidirectional keyboard interface (separate
- keyboard controller) and a BIOS Int 15H hook for "System Request". This
- program has no effect when run on original PCs and PC/XTs because those
- machines do not meet these requirements. Here's what the LK250 driver does:
-
- 1) It allows the keyboard to be switched from DEC to IBM mode and back under
- program control. This replaces the "Press Alt-Special" mechanism provided by
- DEC.
-
- 2) It allows programs which call it to manipulate the state of the keyboard.
- Currently, MS-DOS Kermit only does this to set/clear the Hold Screen LED, so
- that the user can tell if s/he's in Hold Screen mode.
-
- 3) It intercepts certain key scancodes which normally can't be seen (like Num
- Lock) so that they can be used as DEC functions.
-
- The LK250 driver controls the behavior of the top-row function keys and the
- two keypads on the right end of the keyboard. When the driver is active, it
- puts your LK250 keyboard into "DEC" mode, meaning that the legends on the
- keytops apply, rather than the blue labels on the front of the keys. The blue
- labels correspond to IBM keys and functions.
-
- If the driver is loaded, MS-DOS Kermit 3.0 and later will make use of it if
- you tell Kermit to SET KEY LK and then SET KEY CLEAR:
-
- MS-Kermit>set key lk
- MS-Kermit>set key clear
-
- The SET KEY LK command has no effect if the driver is not loaded. If the
- driver is loaded, this command sequence puts the keyboard into DEC mode during
- terminal emulation (CONNECT), and returns it to IBM mode whenever terminal
- emulation ends.
-
- During terminal emulation, the scan codes of the DEC keys are mapped to the
- MS-DOS Kermit keyboard verbs of the same name as the DEC keys, so the keyboard
- appears to work like the regular LK201 DEC keyboard found on the VT200 and 300
- series terminals. Here's the list of assignments when the LK250 driver is
- active and the keyboard is in DEC mode:
-
- LK250 Key Assignment (Character or Kermit Verb)
-
- Compose Escape (\27) Main Keyboard
- Backspace DEL (\127)
- Shift-Backspace Backspace (\8)
- Return Carriage return (\13)
- Shift-Return Linefeed (\10)
- Tab Horizontal Tab (\9)
-
- F1 (Hold) \Kholdscrn Top Row Function Keys
- F2 (Print Screen) \Kprtscn
- F3 (Setup) (none)
- F4 (none)
- F5 (Break) \Kbreak
- F6 (Interrupt) \KdecF6
- F7 (Resume) \KdecF7
- F8 (Cancel) \KdecF8
- F9 (Main Screen) \KdecF9
- F10 (Exit) \KdecF10
- F11 (ESC) \KdecF11
- F12 (BS) \KdecF12
- F13 (LF) \KdecF13
- F14 (Insert/Overst) \KdecF14
- F15 (Help) \KdecHelp
- F16 (Do) \KdecDo
- F17 \KdecF17
- F18 \KdecF18
- F19 \KdecF19
- F20 \KdecF20
-
- Find \KdecFind Cursor/select keypad (gray)
- Insert Here \KdecInsert
- Remove \KdecRemove
- Select \KdecSelect
- Prev \KdecPrev
- Next \KdecNext
- Up Arrow \Kuparr
- Left Arrow \Klfarr
- Right Arrow \Krtarr
- Down Arrow \Kdnarr
-
- PF1 (Gold) \Kgold Numeric keypad
- PF2 \Kpf2
- PF3 \Kpf3
- PF4 \Kpf4
- Keypad 7 \Kkp7
- Keypad 8 \Kkp8
- Keypad 9 \Kkp9
- Keypad - (Minus) \Kkpminus
- Keypad 4 \Kkp4
- Keypad 5 \Kkp5
- Keypad 6 \Kkp6
- Keypad , (Comma) \Kkpcoma
- Keypad 1 \Kkp1
- Keypad 2 \Kkp2
- Keypad 3 \Kkp3
- Keypad Enter \Kkpenter
- Keypad 0 \Kkp0
- Keypad . (Period) \Kkpdot
-
- To install the driver, just type "msulk2" on IBM PCs and PS/2s, or "msulkv" on
- VAXmates (this assumes that MSULK2.COM or MSULKV.COM is in your current disk
- and directory or in your DOS path). You can also run the driver from your
- AUTOEXEC.BAT file if you want it to be active all the time.
-
- For the VAXmate only, a set of key definitions is also required. Add these
- to your MSCUSTOM.INI file:
-
- SET KEY \326 \KPF3 ; PF3 Scrl Lock
- SET KEY \311 \KPF4 ; PF4 Prt Sc
-
- SET KEY \339 \Kkpdot ; KP . Delete
- SET KEY \338 \Kkp0 ; KP 0 Install
- SET KEY \335 \Kkp1 ; KP 1 End
- SET KEY \336 \Kkp2 ; KP 2 Down Arrow
- SET KEY \337 \Kkp3 ; KP 3 Page Down
- SET KEY \331 \Kkp4 ; KP 4 Left Arrow
- SET KEY \332 \Kkp5 ; KP 5 unused
- SET KEY \333 \Kkp6 ; KP 6 Right Arrow
- SET KEY \327 \Kkp7 ; KP 7 Home
- SET KEY \328 \Kkp8 ; KP 8 Up Arrow
- SET KEY \329 \Kkp9 ; KP 9 Page up
- SET KEY \330 \Kkpminus ; KP - -
- SET KEY \334 \Kkpcoma ; KP , +
- SET KEY \2494 \Kkpenter ; Alt-Enter
-
- SET KEY \389 \kdecfind ; Find or Home
- SET KEY \390 \kdecinsert ; Insert Here
- SET KEY \391 \kdecremove ; Remove
- SET KEY \392 \kdecselect ; Select or End
- SET KEY \393 \kdecprev ; Previous Screen
- SET KEY \394 \kdecnext ; Next Screen
- SET KEY \395 \Kuparr ; Up Arrow
- SET KEY \396 \Klfarr ; Left Arrow
- SET KEY \397 \Krtarr ; Right Arrow
- SET KEY \398 \Kdnarr ; Down Arrow
-
- SET KEY \315 \Kholdscrn ; F1 Toggle Hold Screen
- SET KEY \316 \Kprtscn ; F2 Print Screen;
- SET KEY \317 \Ktermtype ; F3 Toggle Toggle Terminal Type
- SET KEY \318 \Klogoff ; F4 Turn Session Logging Off
- SET KEY \319 \Kbreak ; F5 Break
-
- SET KEY \x140 \kdecf6
- SET KEY \x141 \kdecf7
- SET KEY \x142 \kdecf8
- SET KEY \x143 \kdecf9
- SET KEY \x144 \kdecf10
- SET KEY \399 \kdecf11
- SET KEY \400 \kdecf12
- SET KEY \401 \kdecf13
- SET KEY \402 \kdecf14
- SET KEY \403 \kdechelp
- SET KEY \404 \kdecdo
- SET KEY \405 \kdecf17
- SET KEY \406 \kdecf18
- SET KEY \407 \kdecf19
- SET KEY \408 \kdecf20
-
- ; shift-return
- SET KEY \796 \13
- ; shift-delete
- SET KEY \782 \127
-
- The LK250 program was written in IBM PC assembly language and contributed to
- Kermit Distribution by Terry Kennedy, St. Peter's College, Jersey City, New
- Jersey, USA (TERRY@SPCVXA.BITNET), December 1989. It was adapted to the
- VAXmate by Trevor Warwick, Digital Equipment Co, Reading, England
- (warwick@marvin.enet.dec.com).
-
- (End of File MSULK2.HLP)
-