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- GOLD - Simulate GOLD Key with NUM LOCK - Version 2.4
-
- Bob Eager, June 1992
-
- Overview
- --------
- GOLD.COM (MSUGOLD.COM) is a simple TSR (Terminate and Stay Resident) program
- intended to make it easier to use MS-DOS Kermit as an emulator for DEC VT100
- and higher model VT series terminals on a PC with an enhanced keyboard (the
- one with separate numeric pad and cursor keys).
-
- What GOLD does is make the NUM LOCK key transmit the code for some other
- key (normally the F1 key; this is usually mapped by Kermit to the VTnnn
- GOLD key). This makes it possible (by using the SET KEY command of
- Kermit) to make the keypad look almost exactly the same as a VTnnn
- keypad (the long + key is the only exception; that is two keys on the
- real terminal).
-
- Using GOLD
- ----------
- To use GOLD, simply place the GOLD.COM file into a directory on the
- normal program path, then type the command:
-
- GOLD
-
- This activates the program, and NUM LOCK will cease to work as Num Lock and
- will instead operate the same as the F1 key (or whatever else has been
- configured). This may not always be convenient, so it is possible to turn off
- the effect by typing:
-
- GOLD OFF
-
- and later to turn it on again by typing:
-
- GOLD ON
-
- The current GOLD state may be displayed by typing:
-
- GOLD
-
- (after the first call, this is the only effect if the command is used without
- parameters). The program can be set to an initial OFF state by calling it the
- first time with the OFF parameter if required. Later calls operate with the
- initially installed copy of the program, which cannot be unloaded (it is,
- however, very small; only 528 or 592 bytes of memory are required, depending
- on the operating mode (see below)).
-
- It is possible to get the original Num Lock function without turning GOLD
- OFF. This is useful if you are inside an application and realise Num Lock has
- been left ON accidentally, and GOLD is also ON. The key combination Shift and
- Num Lock will toggle the Num Lock state each time it is used (just as Num Lock
- does on its own when GOLD is OFF).
-
- It is also possible to turn GOLD on and off without calling it as a command.
- The key combination Alt and Num Lock will turn GOLD off if it is on, and on if
- it is off. Note that Alt and Num Lock normally operates exactly as a normal
- Num Lock, so no functionality is lost when GOLD is loaded.
-
- If you are using DOS 5, GOLD may be loaded using the LOADHIGH command; this
- saves space if upper memory space is available.
-
- Compatibility
- -------------
- Some machines may not contain BIOS support for this program; in such cases,
- GOLD automatically uses an alternate operating mode (direct interception of
- keyboard interrupts) which will work on true compatible machines. However,
- this method uses slightly more memory (544 bytes against 480 bytes) and
- requires a high degree of machine compatibility.
-
- Problems have been reported where GOLD appears to have no effect, even if each
- of the particular modes is forced. In many cases this appears to be due to a
- version of the KEYB (or KEYBxx) command used for reconfiguring non-US
- keyboards; it steals the keyboard interrupt vector and fails to honour the
- keyboard intercept request from GOLD. The solution is generally to use an
- earlier version of the KEYB program (or one of the country specific versions
- such as KEYBUK) or to use a KEYB program from a PC-DOS system; these appear
- not to have the problem.
-
-
- Configuration
- -------------
- The program uses the INT 2FH multiplex interrupt to install itself; it uses a
- multiplex ID of 0DCH. This may be changed if it clashes with other TSR
- programs. The key to which NUM LOCK is mapped may also be changed, and it may
- also be transmitted as if SHIFT, CTRL or ALT is held down at the same time.
- It is also possible to force GOLD to use a particular operating mode (BIOS
- keyboard intercept, or direct keyboard interrupt intercept).
-
- Alteration of the above items is obvious on examination of the program source
- code. If you do not have MASM, it is easy to patch the program since the
- relevant values are stored in easy to find places - offsets 102H, 103H, 104H
- and 105H.
-
- GOLD has been tested on PC-DOS 3.0, 3.1, 3.3, 5.0, MS-DOS 3.2, 3.3 and 5.0,
- and in the DOS mode sessions of IBM OS/2 versions 1.2, 1.3 and 2.0. Tests
- were performed on an IBM PC/XT compatible (PC-DOS and MS-DOS all versions), an
- IBM PC/XT (PC-DOS version 3.3) and an IBM PS/2 Model 80-111 (PC-DOS versions
- 3.3 and 5.0, and OS/2).
-
- Files included
- --------------
- This package should consist of the following files. Please distribute
- all of these files if you pass the package on.
-
- GOLD.COM - Executable program for GOLD
- GOLD.DOC - Documentation (this file)
- GOLD.ASM - MASM source code
- GOLD.BAT - Batch file to build GOLD
- GOLD.INI - Kermit TAKE file to define keyboard for DEC terminal
-
- NOTE: In the Kermit Distribution area, all these filenames are prefixed by
- the letters MSU, e.g. MSUGOLD.COM, to keep them together with other MS-DOS
- Kermit files.
-
- Acknowledgement
- ---------------
- Thanks to all those, all over the world, who have contacted me with
- suggestions for improvements to GOLD. There are too many to mention
- individually, and many people made the same or similar suggestions.
-
- Contact
- -------
- Please send any comments or suggestions to me, Bob Eager:
-
- rde@ukc.ac.uk (USENET) (preferred over ibmpcug)
- rde@ibmpcug.co.uk (USENET)
- 100016,2770 (CompuServe)
- +44 227 764000 ext 7589 (Telephone)
-
- Update history
- --------------
-
- 2.4 - fixed problem where PAUSE was being recognised as if NUM LOCK
- had been pressed. This was because PAUSE generates a six byte
- data sequence containing, as its third byte, the scan code used
- by NUM LOCK
-
- 2.3 - added facility to include CTRL, ALT or SHIFT with replacement key code
-
- 2.2 - added some additional safety code to the installation check
-
- 2.1 - changed default multiplex ID value to 09FH to fix problems with
- some versions of KEYB
-
- 2.0 - added SHIFT and NUM LOCK facility to provide original NUM LOCK capability
- - added ALT and NUM LOCK facility to change GOLD status directly
- - fixed interrupt intercept incompatibility with some clone BIOSes
- - fixed non-detection of BIOS intercept support in some cases
- - added code to use direct keyboard interrupt handler if BIOS
- interrupt intercept facility not available
-
- 1.0 - initial program version
-
- (End of GOLD.DOC / MSUGOLD.DOC)
-