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GROM Sim
The first step on this road was implementing my GROM simulator on an Atmel AVR. This is one of many things that was pleasantly as simple as it seemed on the surface, but nuances took it a little deeper. Although it's on a complex circuit board in this sho
Date: 11/13/2010
Views: 89
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EA Complete
As a proof that the GROM simulator works, I created a modification of the Editor/Assembler cartridge that I called "EA Complete". This version includes the disk-based files as part of the GROM, eliminating the need to have them on disk in order
Date: 11/13/2010
Views: 78
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PCB Snapper
The next step was to add an embedded Linux board. I used a Snapper9260 as a compromise between size, power, and cost. This board requires a 3.3v power supply, so I used a covenient (but overkill) regulator to step down the 5v from the TI. (The actual boar
Date: 11/13/2010
Views: 90
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PCB AVR
With the board lifted, you can see the AVR underneath. The AVR's serial port is connected to the serial console on the Linux board -- and at this point in time that's it. The only magic involved is the software, the hardware is as straight forward as it g
Date: 11/13/2010
Views: 81
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Prototype Cart
This is the assembled cartridge that I took to the faire. I didn't want to remove the switch, since I'd just have to put it back on when I got home, but it doesn't serve any purpose in this cart (if switched, it essentially turns off the AVR and the TI se
Date: 11/13/2010
Views: 76
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Linux Screen
Here's a screenshot from the running machine. The TI's best graphics mode is only 40 columns wide, but I didn't get a chance to tweak the Linux terminal to that width. I basically put this together the three days before the faire, including writing the te
Date: 11/13/2010
Views: 118
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