Electronics > FPGA

Programming (non-JTAG) MAX7000 devices

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ceteras:
I tried pulling the pins, didn't work.

TomKeddie:
@migry awesome efforts on the non-jtag devices, I have the same problem. Seems like I should just ewaste them and use a bunch of 22v10s instead but I wanted to check what you ended up doing.  Thanks Tom.

migry:
I have put further work on a back burner for the time being, however I would very much like to spend some more time.

The more I think about it, the more I like the idea of modifying DosBox to output the programmer "commands" to a serial port (USB RS232) as long as I can figure out how to do this inside DosBox. The serial output would connect to the Arduino Mega, which would be able to parse the data stream in order to set the pins and power supplies as just like the programmer would. The timings wouldn't be perfectly accurate, but hopefully would be good enough to get a response from the device.

I will look into "erase" as this appears to be the action people need/want. I did buy 10 EPM7032 devices, so I can sacrifice one and program the lock bit. These particular devices are the later JTAG ones, and I have confirmed that I am able to program them using the cheap Chinese Altera USB Blaster clone.

ale500:
Is your USBBlaster clone's VCC pin 5 V tolerant ? Mine is not: internally has a level converter (A LCX245) that only accepts up to 3.3V supply voltage, I powered with 3.3V.

Rasz:
wouldnt that depend on the clone? those based on EZ-USB FX2LP CY7C68013A should be 5v tolerant

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