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Altera_Forum
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7 years ago

I need to write program to control EPCS chip using USB blaster through AS

I have recently experienced issue explained here (https://www.alteraforum.com/forum/showthread.php?t=45474) - EPCS device attached to Cyclone III is not erased by the Quartus II, still containing dat...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

There's an Quartus programmer option "Unprotect EPCS devices selected for erase/program operation", did you check if it works in AS mode?

As for the USB Blaster protocol, there's no Altera documentation, but several clone projects on the internet that have reengineered it.

There's also third party software interfacing USB Blaster through libusb or FTDI d2xx driver.