Editing TRS-80 Color Computer (section)

==Discontinuation==
{{More citations needed section|date=December 2011}}
On October 26, 1990, Tandy announced that the CoCo 3 would be dropped from its computer line.

[[Wayne Green]] wrote in ''[[80 Micro]]'' in December 1982 that Tandy had "virtually abandoned" the Color Computer. As with its other computers, Tandy attempted to monopolize hardware and software sales, but, he wrote, the Color Computer was incompatible with other Tandy software and what was available was of poor quality. "I'm sure there are at least fifty software firms out there that would love to work with the Shack", Green said, but "it seems that the Shack people are at war with their supporters and potential suppliers".<ref name="green198212">{{Cite magazine |last=Green |first=Wayne |author-link=Wayne Green |date=December 1982 |title=Is the Shack in real trouble? |url=https://archive.org/details/80_Micro_1982-12_1001001_US |magazine=[[80 Micro]] |type=editorial |pages=[https://archive.org/details/80_Micro_1982-12_1001001_US/page/n326 8], 10, 12 |access-date=2020-02-29}}</ref> Many CoCo owners agree that Tandy did not take the computer seriously.<ref name="Tandy Coco Sales">{{cite book|last1=G. Pitre|first1=Boisy|last2=Loguidice|first2=Bill|title=CoCo: The Colorful History of Tandy's Underdog Computer|date=2013|publisher=CR Press|location=Europe|page=3|isbn=9781466592483|url=https://books.google.com/books?id=k5bNBQAAQBAJ&q=tandy+coco+sales&pg=PA81|access-date=16 February 2018|archive-date=12 April 2024|archive-url=https://web.archive.org/web/20240412044620/https://books.google.com/books?id=k5bNBQAAQBAJ&q=tandy+coco+sales&pg=PA81#v=snippet&q=tandy%20coco%20sales&f=false|url-status=live}}</ref>

===Successors===
A few companies attempted to carry the CoCo torch, but the lack of decent [[backwards compatibility]] with the {{nowrap|CoCo 3}} failed to entice much of the community. Some of these systems run OS9/68k, which is similar to [[OS-9]].

Frank Hogg Labs introduced the '''Tomcat TC-9''' in June 1990, which is somewhat compatible with the {{nowrap|CoCo 3,}} but is only able to run [[OS-9]] software. A later version called the '''TC-70''' has strong compatibility with the MM/1, and also runs OS-9/68K.

'''Multi-Media One''' was introduced in July 1990, runs [[OS-9]]/68K on a 15&nbsp;MHz [[Signetics]] 68070 processor with {{nowrap|3 MB RAM,}} and a 640×208 graphics resolution as well as supporting a 640×416 [[interlaced video|interlaced]] mode. It includes a [[SCSI]] interface, stereo A/D and D/A conversion, an optional [[MIDI]] interface, and an optional board to upgrade the CPU to a [[MC68340|Motorola 68340]]. The '''AT306''' (also known as the '''MM/1B''') is a successor to the MM/1 that contains a Motorola 68306 CPU, OS-9/68K 3.0, and allows [[Industry Standard Architecture|ISA]] bus cards. It was created by Kevin Pease and Carl Kreider, and sold by Carl's company, Kreider Electronics.

Peripheral Technology produced a 16&nbsp;MHz [[Motorola 68000]] system called a '''PTK68K-4'''. Delmar sold systems based on the PT68K-4 and called the '''Delmar System IV'''. The PT68K-4 has the footprint of an [[IBM PC]] and seven 8-bit ISA slots. Video is provided by a standard video card and monitor, but for high-resolution graphics the software only supports certain video cards.

Gary Becker produced the '''CoCo3FPGA''' for Terasic DE FPGA boards.<ref>{{Cite web|title=Altera DE1 Board|url=https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=53&No=83|access-date=2021-04-11|website=Terasic Technologies|archive-date=2021-04-11|archive-url=https://web.archive.org/web/20210411042721/https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=53&No=83|url-status=live}}</ref> It contains a 6809 CPU core which can run at 25&nbsp;MHz.<ref>{{Cite web|title=System09 VHDL 6809 System on a Chip|url=http://members.optusnet.com.au/jekent/system09/|access-date=2021-04-11|website=members.optusnet.com.au|archive-date=2021-04-11|archive-url=https://web.archive.org/web/20210411042704/http://members.optusnet.com.au/jekent/system09/|url-status=live}}</ref> It adds 256-color graphics modes, including a 640x450 mode.

Roger Taylor developed a CoCo 3 clone, '''Matchbox Coco''', based on the DE0-Nano FPGA board.<ref>{{Cite web|url=http://www.cococommunity.net/how-to-build-your-own-coco-4/|title=How to Build a Matchbox CoCo – CoCoDaddy|access-date=2018-10-11|archive-date=2018-10-12|archive-url=https://web.archive.org/web/20181012014610/http://www.cococommunity.net/how-to-build-your-own-coco-4/|url-status=live}}</ref>  Renamed to '''RealCoCo''',<ref>{{Cite web|url=https://www.patreon.com/rogertaylor/|title=RealCoCo|access-date=2021-10-27|archive-date=2021-10-27|archive-url=https://web.archive.org/web/20211027015056/https://www.patreon.com/rogertaylor|url-status=live}}</ref> it has been ported to other FPGA hardware.