My Hardware Mods


This section is dedicated to any hardware related mods and other things I’ve done. So don’t expect too much content...


I acquired a 1975 Telequipment S61 Oscilloscope:


I'm looking at using this to program a 'Tennis for Two' type game (with controllers), probably using the Arduino DUE.

I've already tested the XY output mode using the 'mushrooms' sound demo, and with a bit of tweaking the scope gives a pretty good picture.



It seems to be working OK for basic component testing, so next stop is to fix my MAC Classic!
I've also hooked it up to my short-wave radio, useful for looking at CW Morse and RTTY signals.









I've been playing around with a 2.50 Ardino Uno compatible controller board:


Nothing to interesting with this one yet. I did the flashing led thing, and added some buttons. I've also played around with the TVOut library.


I'm thinking of making a monochrome '1970's TV games' type  retro gaming system, complete with POT paddles, game selector switches, flashing lights, and POT type paddle controllers, with this.

(I have most of the bits, and the code shouldn't be too difficult)



 Activating Full Colour mode on my old Microvitec CUB monitor:
Most people will know this best as the old 'metal box' monitor used with the BBC Micro computers. But it is a remarkably useful, and flexible, monitor that may be used with a range of systems.The main issue with these is that as standard they are configured to run in their ‘digital’ mode. This is good for producing a crisp 16 colour EGA style display, and as they were primarily used with the BBC Micro this was a good option.

However, for more widespread use the analogue mode is the one you want. And probably the most asked question about the Cub is ‘How do I convert the to Microvitec CUB monitor to analogue mode?’
Despite the answer being relatively straightforward I’ve found very little in the way of simple explanations of how to do this, so I decided to put these easy step-by-step instructions up here:

1)      Remove the back panel from your CUB monitor
(you shouldn't need to remove the top)
2)      Locate the PL103 jumper switch set:
  This is located towards the left-hard corner of the circuit-board...
  just to the rear of where teh cables connect.  
 Viewed as you look in from the back.
3)      There should be a long bar with ten pins coming from the top
        Three of the pins should be marked as R, G, and B, each with a jumper.
              (for Red, Green, and Blue)
  As standard these jumpers will be set to the TTL mode.
  All of them link the middle ‘ground’ pin to switch position 2 by default.
5)      You need to move the three jumpers to position 1 (Linier)
for each of the R, G, and B switches.
6)      And that’s it. The monitor is now setup for ‘real’ colour mode,
it can now be used for any number of purposes.
       I run my Amiga through it and it works perfect.
7)      Oh, and don’t forget to screw the back panel of your CUB back on.


Once this is done you can use it with anything with an RGB out. I made leads for my Amiga 600, and the original  Saga Master System and Megadrive.



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