imported BSMON source code, not yet adapted

doc/Development.md

@@ -95,7 +95,7 @@ Currently there are 4 ROM layouts defined:
 
 - `STD` - with 2 code segments: `BASIC` (`$A000-$E4D2`, where `$C000-$DFFF` is a skip-gap for RAM and I/O area) and `KERNAL` (`$E4D3 - $FFFF`)
 - `CRT` - where `BASIC` becames `BASIC_0` and `KERNAL` becames `KERNAL_0`, with additional `BASIC`/`KERNAL` segments are placed on the required cartridge image
-- `M65` - where `BASIC` becames `BASIC_0` and `KERNAL` becames `KERNAL_0`, additional segments might be added to the build system in the future; at the moment of writing this document additional 12KB of ROM is defined as `BASIC_1` segment, additional 4KB of ROM is defined as `KERNAL_C` segment, and additional 8KB of ROM is defined as `KERNAL_1` segment
+- `M65` - where `BASIC` becames `BASIC_0` and `KERNAL` becames `KERNAL_0`, and several additional segments are added for extended functionality
 - `X16` - memory layout for the Commander X16 machine
 
 Expect at least one more, `U64`, if the planned additional ROM banks support for Ultimate 64 gets implemented. To check for current ROM layout or code segment use KickAssembler preprocessor defines, like `ROM_LAYOUT_STD`, `SEGMENT_M65_BASIC_0`, `SEGMENT_X16_KERNAL_1`.

src/mon_m65/LICENSE

@@ -0,0 +1,25 @@
+BSD 2-Clause License
+
+Copyright (c) 2020, MEGA65
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.