CBM MX Keyboards Project         Steve J. Gray
========================

This is a project to create replacement keyboards for CBM Machines
using standard MX keyswitches. The first goal is to create direct
replacements that fit standard CBM cases (if possible).


KEYBOARDS
=========

Keyboards are identified by a string in the following format:

KB-Vn-Rn

where: KB is the keyboard name
       Vn is the version#. This is a unique design/layout of a specific keyboard.
       Rn is the revision#. Generally updates to a specific keyboard version.

 So, take the PET "B" keyboard. V1-R1 is the first design using pcb cutouts to allow the
keyboard to be mounted higher. When this was awkward a R2 revision was done to eliminate
the cutouts and reduce the pcb size. However this requires a 3D printed bracket to mount
it. Since both keyboards use the same switch and keycap layout both are V1. If a new
version is designed that say uses a different sized spacebar or has significant changes
then a V2 would be made. With the CLCD keyboard there are two versions. V1 has a layout
using the diamond arrow cursor keys. A V2 version instead uses an inverted-T cursor layout.

Examples:

       "B-V1-R1" is the PET/CBM "B" (Business) keyboard, Version 1, Revision 1
       "N-V1-R2" is the PET/CBM "N" (Normal/Graphic) keyboard, Version1 , Revision 2

Keyboards In Development:

	N    = PET/CBM Normal/Graphic Keyboard (4032)
	B    = PET/CBM Business Keyboard (8032, SuperPET, 8296 etc)
	CBM2 = B128, CBM128-80, 5x0, 6x0, 7x0,P500 etc
	V364 = TED series prototype with numeric pad
	CLCD = Laptop prototype
	CSX  = C128+SX64 customizable design

Planned:
	C64  = VIC-20, C64, C16 etc
	C65  = C65 with cursor keys etc
	B64  = PET "B" with C64-style layout


STICKERS
========

 Artwork for labelling keycaps is in the STICKERS folder, since that is the most likely
way to label the keys. However, stickers is not the only possibility... see webpage for
more details.


SCANS
=====

  Original keycap scans are in the SCANS folder. These are scanned with a flatbed scanner,
either the entire keyboard (stitched if required) or individual keycap top and front.


WEBPAGE
=======

For more information please visit the project webpage.
Comments and feedback are welcome!

http://www.cbmsteve.ca/mxkeyboards/index.html


HISTORY
=======

KEYBOARD    DATE        PCB?	STATUS
--------    ----        ----	------
B-V1-R1     2020-07-01  YES	Built and tested. Electrically working but requires pcb mounting hole modifications
N-V1-R1     2020-12-17  YES	Built and tested. Electrically working but does not fit in N keyboard case due to measurement error.
N/B         2021-02-10  -	Add keyboard labelling stickers for both N and B keyboards on one page.
N-V1-R2     2021-03-31  -	Add Gerbers
B-V1-R2     2023-03-21	YES	Released. Built and tested.
CSX-V1-R1   2023-09-01  YES	Testing...
CSX-V1-R1   2024-02-25  YES     Released. Built 3 configurations. Basic functionality is working but more work is needed to fully test.
V364        2024-02-25  YES     Released. Built and tested.