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I’ve disabled JTAG so I can use the JTAG pins for I/O and used a JBC file to program an EPM7064S using ByteBlasterMV. Using a POF file doesn’t work.
As far as I can tell the programming seems to have work including the use of the JTAG pins for user I/O. Although the verify function doesn’t work. How does this work? Why doesn’t the verify work? Is there anything I need to watch out for? If I program all of the JTAG pins as O/P will it stop the JTAG programming from working? Some of my settings .... set_global_assignment -name DEVICE "EPM7064SLC44-10" set_global_assignment -name LAST_QUARTUS_VERSION "9.1 SP2" set_global_assignment -name MAX7000_DEVICE_IO_STANDARD TTL set_global_assignment -name MAX7000_ENABLE_JTAG_BST_SUPPORT OFF set_global_assignment -name SECURITY_BIT OFF set_global_assignment -name GENERATE_JBC_FILE ON TerryLink Copied
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If I understand right, your way of programming is a one way ticket. You can't neither verify nor reprogram the chip. If you want to, you need a programmer that supports a high voltage programming method, e.g. the Altera Programming Unit (APU).
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--- Quote Start --- If I understand right, your way of programming is a one way ticket. You can't neither verify nor reprogram the chip. If you want to, you need a programmer that supports a high voltage programming method, e.g. the Altera Programming Unit (APU). --- Quote End --- Hi thanks for your comment but I’ve found it does work. I’ve programmed it with a good design and it works. I then programmed it with a bad design and it stopped working as I expect. I’ve programmed it with a good design and it works again. I’ve not checked if the JTAG pins have been programmed correctly so it is possible it’s only been partial programmed. I will check this out later on when I have time and report back. Terry

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