[Coco] No "3 musketeers"

[Robert Gault]

Diego Barizo wrote:
> Both keys, ALT and CTRL work....

I'm not sure what the hardware problem is but try seating any chips that 
have sockets.

If all you want to do is see the picture, you can get that with a simple 
program.

  org $6000
start orcc #$50
  lda #$CE
  sta $FF90
  sta $FFDE
  jmp $C1F0
  end start

Assemble the above, LOADM the program, and EXEC.