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    Length: 2206 (0x89e)
    Types: TextFile
    Notes: UNIX file
    Names: »READ_ME«

└─⟦f27320a65⟧ Bits:30001972 Commodore 900 hard disk image with partial source code
    └─⟦f4b8d8c84⟧ UNIX V7 Filesystem
        └─ ⟦this⟧ »hrtty/src/READ_ME« 

TextFile

To George Breen:
85.04.01

	Here are the sources for the keyboard driver.
Each file may be compiled with:
	cc -c -I. file.c

The following files are given with their uses:

v0.c	This is the video driver.  Your ibm emulation driver will replace
	this module.  This module is included only when one needs to try
	the keyboard without the video part being there.

kv.c	This is the keyboard and video pseudo-driver.  It is the top level
	that arranges to call out to both the keyboard (kb.c) and video (v0.c)
	parts when necessary.

kb.c	This is the keyboard automaton itself.  It assumes a routine
	`v0in(c)' which is used to send the characters to the video
	section (v0.c).
	The routine `kbkpmode(f)' takes a flag (true non-zero) to
	indicate when in keypad mode.  This allows (for the non-IBM)
	keyboard to send different escape sequences (K0, etc) for
	the numeric keyboard when in keypad mode.  This is used to
	emulate VT-100's and VT-52's literally.

kbtab.c	This is the keyboard table (which has all relevant key information
	including shifts, etc) for the standard Commodore Keyboard.
	This standard keyboard is the one you sent me in the documentation
	with the W1, W2, W3 keys and the diamond shaped arrow keys.
	To use the IBM keyboard, you should use `kbibmtab.c' instead of
	`kbtab.c' in the compilation.

kbtab.h
	A header file used internally by the above driver modules.

kbchar.h
	This file is used both by the driver and the user (application)
	code to access special keys.
	FSTART and FEND are the beginning and ending of all function keys.
	These function keys send the main character (e.g. F0) followed by
	the shift state character (SSTART to SEND).  These shift characters
	contain bits indicating Shift, Control, and ALT shifting modes.
	The shift character will undoubtedly be ignored by any application
	not needing a lot of shift keys.
	The UP/DOWN, etc key codes are not used with the IBM keypad but
	are instead (K8 for UP, K2 for down, etc as on the IBM keyboard).

	To make the driver, type:
		ld -o kv kv.o kb.o kbibmtab.o v0.o
		/etc/load kv

In the above ld command, you should replace `v0.o' with whatever is
appropriate for your video driver.

				Good Luck,
				Randall.