New hardware project - my computer desk

I have 5 to 7 computers on my desk at any given time. With literal, physical desktop space being sparse, I have decided to do something that I think most would find odd. I'm going to take my Atari and my C64 and put them in a tower.


I will need a mechanism that will allow the two boards to share a single keyboard and a way to possibly power each independently.


I'll leave my primary Tandy CoCo2 and TI-99/4A alone of course.

I also need a tape cassette cable for the Tandy Coco so I can backup and restore code to my file server. 

WAR IRON of the Red Clan

I'm going to do something I have never tried before, to make a game in Tandy's SG24 mode.  This will be a major difference in the development path I'm taking with the TI-99/4A, C64, and Atari 8-bit.  Those three system's graphics are being done with 8x8 bitmap pixels.

what is the deal with 80s computer keyboards

I hear social media video blogger repeat over and over that there was not a keyboard standard in the 70s and 80s for home computers. This unfortunately is true - kinda. There were really two loose standards. How do I know? First, I own quite a few computers from the 80s. It was IBM PC that broke the simi-standard and then redefined the overall standard by "winning" the PC wars.

So what was the standard layout before IBM changed it all?

First there is What I call Standard I - This was used by majority of the early 70-80s home computers

1) QWERTY keyboard like most type-writters

2) Specific characters associated with SHIFT and numbers

(Photo of a Commodore 64 keyboard)


(Photo of a Tandy CoCo 2 keyboard)

(Photo of an Atari 130XE keyboard)

Above the 1=!, 2=", 3=#, 4=$, 5=%, 6=&, 7=', 8=(, 9=)

Who adhered to this Standard I:
- Amstrad
- Apple I and II
- Atari (400, 800, 800XL, 130XE,  ect) - *Mostly*
- Commodore (PET, Vic 20, C64)

- Dragon (32 and 64 computers)
- Tandy (Model 1, Model 2, Model 3, Model 4, Coco, CoCo2, CoCo3 and others)

Probably others were included.

Anyone that does retro programming on these systems knows it is an adjustment finding the quote above the '2' key.

Atari put a '@' with the 8 and shifted the '(' and ')' over one place.

Where did these companies come up with this format. Many decades of typewriters before them. This was much of their layout.

Standard II
Who did not use Standard I, but the Standard II? 

- Later Apple computers and Macintosh. 

- Later Atari computers (ST line), 

- Later Commodores (Amiga line), 

- all IBM computers and most compatibles like Tandy 1000 line. 

- Coleco Adam

- All Texas Instrument computers.  

IBM came up with this design, which may have influenced later keyboard's such as the Apple IIe's/Macintosh, the Commodore Amigas and Atari STs.

With the Apple IIe, Apple changed some keys around like the 2 key to be associated with @ like the IBM.

Texas Instruments TI-99/4A keyboard

What is the Standard II number line layout?

1=!, 2=@, 3=#, 4=$, 5=%, 6=^, 7=, 8=*, 9=(, 0=)

Somehow people were swayed into believing the IBM PC was superior to the computers of the late 80s.  Really was not true, but perception often wins.   As PC clones became the norm, so did this keyboard layout.