TRS-80 Breadboard Interface project for the Model I

[TRS-Ian]

From R-E in 1980.

Who is interested in a reproduction of this and what form? Bare board, or Kit B, or CKD, or fully assembled?

Let me know.



Cheers,

Ian.

 

[pjhacnau]

Sorry to ask the reasonably obvious: I get what Bare board, Kit B, and fully assembled are. But CKD? Is that an "all parts" kit?

 

[pski]

Is this essentially a breadboard interface to the 40 line bus? Any other features?

 

[TRS-Ian]

Hi Peters (as in plural)

CKD = completely knocked down = all parts, you build it yourself.

It allows you to design and connect experimental circuits to the Model I via a buffered interface without the chance of damaging the computer.

Ian.

 

[Audronic]

@TRS-Ian

Is there a link to get more info on this Please.

Thanks Ray

 

[TRS-Ian]

Sent Ray.

For everyone else, if you are a member of the Yahoo! TRS-80 group you can download each of the three parts thusly:

https://xa.yimg.com/df/TRS-80/TRS-80+Breadboard+Part+1.pdf?token=CtcBhZvLNIOxhlYVU-G8jtDYOdPwXnEwJTvUeMItKji7fKDTzIYnQFAx1bEHFGififghxgKafvcQsLIjFD_SUVxvW8ov7cliv8GGFZh-lMU_WbeMNcIT3W8jEhblGHJlQw&type=download

https://xa.yimg.com/df/TRS-80/TRS-80+Breadboard+Part+2.pdf?token=2EA1NT6BuMmbu2YCiHIIiSGgsSyQyQpTSfS2T7LqzSNVjr-tVhdorWca7YdoAhYLWFaJsW-tzRlzDvPGIHs3XoFXivB6QHfVke5Lf7LmrzEbVaL5Z16w817M4MzO2T4iTw&type=download

https://xa.yimg.com/df/TRS-80/TRS-80+Breadboard+Part+2.pdf?token=2EA1NT6BuMmbu2YCiHIIiSGgsSyQyQpTSfS2T7LqzSNVjr-tVhdorWca7YdoAhYLWFaJsW-tzRlzDvPGIHs3XoFXivB6QHfVke5Lf7LmrzEbVaL5Z16w817M4MzO2T4iTw&type=download

Ian.

 

[TRS-Ian]

Ray commented that some of the PDF scans are hard to read which may make life a little difficult at assembly time once the PCBs have been ordered and delivered.

Can people please let me know which parts are hard to read and I'll re-scan them.

Cheers,

Ian.

 

[TRS-Ian]

For those interested to see what the completed unit looks like in full colour, here it is on the cover of R-E in November 1979:



Discuss.

Ian.

 

[pjhacnau]

Interesting from a timing perspective - someone is selling one of these in NZ.

http://www.trademe.co.nz/computers/vintage/auction-942166331.htm