Space Duel in B&W on GO5?

ArcadeDanger

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Has anyone tried to run Space Duel on a black and white G05 (Asteroids Deluxe) monitor before? I know there are some voltage differences (50VAC vs 60VAC) on the monitors. Thanks.
 
Ok, I managed to acquire a reportedly working Space Duel board+AR2 set so I'm going to try to see if I can make this work.

I plan to use the current Asteroids Deluxe Power Supply Assembly, that has all the same voltages that Space Duel is expecting, but giving the correct voltage to the GO5 (60VAC).

Need to have the AR2 for Dual Space as well, since AD only uses 5VDC and SD is expecting 22VDC.

From the schematics, I mapped the voltages as follows

Asteroids Deluxe Voltage Map

Power Assembly to:
Monitor - 60VAC
Monitor - 6.1VAC (not sure what function this has)
AR2 - 10.3VDC
PCB - 36VAC ** DANGER TO SPACE DUEL PCB

AR2 to:
PCB - +5VDC


Space Duel Voltage Map

Power Assembly to:
Monitor - 50VAC
AR2 - 10.6VDC
AR2 - 36VAC

AR2 to:
PCB - +5VDC
PCB - +22VDC ** DANGER TO ASTEROIDS DELUXE PCB
PCB - -22VDC ** DANGER TO ASTEROIDS DELUXE PCB

As you can see from the mapping, care will have to be taken when switching from AD to SD.

I'll have to make some connector adapters to make this work with the AD harness.
 
I was thinking about how to convert the different RGB signals into something the B&W monitor can interpret as a brightness level. Would running each RGB through a separate diode (to prevent signal from one color coming down another signal path) and then tying them together work?
 
Thanks Andrew, looks like I was close:
"Hooking the monitor to the board was pretty straightforward. The X and Y ouputs went directly from the board to the monitor. The trick was combining the red/blue/green Z outputs. What I did was connect the anodes of three switching diodes (1N914's) to the R,G, and B outputs from the board. I then tie the cathodes of the three diodes together, and connect a 2K-ohm resistor to ground. The junction of the diodes and resistor are then connected to the Z input of the monitor.
Don't forget to connect a good ground between the monitor and the boards."

I'll update when my board arrives and hacking commences...
 
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