Just a Simple Cartridge Port Probing Adapter
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Just a Simple Cartridge Port Probing Adapter
I made a simple pass-through cartridge PCB to facilitate probing cartridge signals using an oscilloscope or logic analyser. All signals are labelled on both top and bottom silkscreen. It'll also permit to easily inject signals in into the console (i.e. from an FPGA dev board).
full write up here:
http://www.db-elec.com/home/lab-posts/s ... evhardware
full write up here:
http://www.db-elec.com/home/lab-posts/s ... evhardware
What does db stand for? Well that's an excellent question...
http://www.db-electronics.ca
http://www.db-electronics.ca
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Hey db, looks nice. Reminds me of the probe board I made for gameboy....sadly these things don't want to sell.
http://store.kitsch-bent.com/product/kk_gb_brkout
http://store.kitsch-bent.com/product/kk_gb_brkout
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I know, the main intent is definitely not to sell, but I figured I'd post it here in case some people would need one (I know I need one!)Jazzmarazz wrote:sadly these things don't want to sell
What does db stand for? Well that's an excellent question...
http://www.db-electronics.ca
http://www.db-electronics.ca
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You can't input 5V directly to a Cyclone FPGA, but the chip design allows for a series resistor on 5V inputs to limit the current flow in the PCI clamping diode. See this appnote from altera:bastien wrote:I don 't think FPGA cyclone III I/O pins are 5V tolerant.
Maybe i don't understand your goal or your cart isn't complete ?
http://www.altera.com/literature/hb/cyc/cyc_c51011.pdf
That being said, not sure if the Altera DE0 provides those resistors.
Edit: the PCI clamping diodes are not active during configuration so you need to make absolutely sure to not drive any 5V signals in the FPGA until configuration is complete else damage could result.
What does db stand for? Well that's an excellent question...
http://www.db-electronics.ca
http://www.db-electronics.ca
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Yes, Hardwareman seems to like to live dangerously and he has some odd ideas about handdrawn schematics vs. those created using Schematic-Capture but each to their own....HardWareMan wrote:You shouldn't understand this. Continue with your own. And yes, I've use some modified ribbon cables.bastien wrote:I don 't think FPGA cyclone III I/O pins are 5V tolerant.
Maybe i don't understand your goal or your cart isn't complete ?
UMDK Fanboy