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--- os [2024/02/17 16:17] – coco
+++ os [2024/05/18 22:55] (current) – [BASIC] coco
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 ====== OPERATING SYSTEMS ======
-[[BASIC]] \\
+===== BASIC =====
-[[OS-9]] \\
+The Tandy Color Computers included a modular ROM BASIC interpreter for the Motorola 6809 microprocessor created by Microsoft and later extended by Microware.
-[[Flex/6809]] \\
-[[CP/M]] \\
+  * Color BASIC - the 8KB core interpreter, math, and string handling
-[[CUBIX]] \\
+  * Extended Color BASIC - extensions to Color BASIC to support graphics, additional sound, and more functions.
-[[FUZIX]] \\
+  * Disk Extended Color BASIC - extensions to Extended Color BASIC to support BASIC reading and writing records from diskette
+  * Advanced Color BASIC - additional Color BASIC functions for on-screen editing, RAM disk, terminal, and sound chip support recovered from a pre-production version of the Deluxe Color Computer discontinued before its release
+  * Super Extended Color BASIC - Microware extensions to Microsoft's modular BASIC to support the additional memory and graphics of the Color Computer 3
+The Micro Computer Computer (MC-10) offers a variant of Extended Color BASIC running on the Motorola 6803 microcontroller and 4 or 16KB of RAM which enthusiasts have expanded up to 128KB with additional BASIC extensions under the name MCX BASIC.
+===== OS-9 =====
+Motorola and Microware partnered in the late 1970's to create a radically advanced BASIC for 6809-based computers, now known as BASIC09.
+To support BASIC09, Microware developed an underlying operating system inspired by AT&T UNIX adapted to running on the advanced 6809 8-bit microprocessor with as little as 64KB of RAM and a single floppy diskette.
+KB machines can only run the core OS-9 known as "Level I" while machines with larger memories may run OS-9 Level II which supports the MultiVue graphical interface and much more.
+Since the 1980's, OS-9 and 6809 fans have disassembled, commented, and modified OS-9 to take advantage of secret high-speed features of the Hitachi 6309 microprocessor under the project name NitrOS-9.
+Some of the original NitrOS-9 fanatics also package a ready-to-run distribution of NitrOS-9 called the Ease of Use (EOU) edition.
+OS-9, NitrOS-9, and Ease of Use continue to evolve and expand while providing computing experience available to home power users all the way back to 1980.
+Learn more at [[https://microware.com/]], [[https://github.com/nitros9project/nitros9]], and [[http://lcurtisboyle.com/nitros9/nitros9.html]]
+===== FUZIX =====
+Adaptation and expansion of the UNIX: Z80 Implementation (UZI) to support a bewildering array of microprocessors and microcontrollers.
+EtchedPixel's FUZIX brings a UNIX 7th edition-inspired operating system with additions and expansion galore including System III and POSIX features.
+Learn more at [[https://fuzix.org]] and [[https://github.com/EtchedPixels/FUZIX]]
+===== Flex/6809 =====
+Mikey N6IL resurrected the 6809 version of the Flex operating system along with many additional tools.
+Learn more at [[https://archive.org/details/color-flex-5.0.4-frank-hogg-laboratory]]
+===== CP/M =====
+The widely ported and emulated CP/M operating system can run on Z80 emulation within NitrOS-9 Ease of Use Edition with several CP/M based programs available there as well.
+Running Ease of Use on a CoCo3FPGA at 25MHz avoids any emulation speed penalty.
+Collectors are searching for the original but rare Z80 hardware card and ROM expansion for the Color Computer.
+Learn more at [[https://computerhistory.org/blog/early-digital-research-cpm-source-code/]]
+===== CUBIX =====
+Dave Dunfield's 6809 operating system for his 6809 computer build.
+Learn more at [[http://dunfield.classiccmp.org/d6809/cubix.htm]]
+===== PSYMON =====
+Percom released PSYMON, the Percom SYstem MONitor, a tiny 1KB OS, for the SBC/09 single-board computer in 1979.
+The source code, packed with utility routines and very well documented, was reconstructed from the original listing and ported to run on the Color Computer 1, 2, and 3 using ROM calls for the I/O.
+Learn more at [[https://colorcomputerarchive.com/repo/Programming/Source/PSYMON%20-%20Percom%206809%20System%20Monitor/]]

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