[Coco] Source for CoCo cassette cable, or components to build one?

[Daniel Campos]

The EACAs Video Genie and Color Genie also use the same cassette port 
pinout as the CoCo/TRS-80.

Daniel

On 09/02/2015 19:17, Allen Huffman wrote:
>> On Feb 9, 2015, at 2:54 PM, Chris Osborn <fozztexx at fozztexx.com> wrote:
>>
>> CoCo cassette cables will work with the TRS-80 Model I, the MC-10, the Model 100/102, original IBM PC, and PCjr. too.
> I saw original PCs (with cassette port) at the college I went to (around 87) which was the first time I ever got to verify they started out with cassette ports :)  Where did this standard originate? Did something have it before the TRS-80 Model I? I never realized that the PC copied the TRS-80s :)
>