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Altera_Forum's avatar
Altera_Forum
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18 years ago

Missing virtual jtag documentation

Hello, I started to use the sld_virtual_jtag Megafunction for low level debugging puposes, using Tcl interface with quartus_stp. Now I'm considering possible operation with non-Altera JTAG inte...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi,

Thanks for your quick reply. I don't think my problem is caused by a specific scenario of internals I am trying to access but rather the Virtual Jtag Instance is not being detected somehow.

Every time I try to use the "device_virtual_ir_shift" and "device_virtual_dr_shift" command in Tcl, it gives me an error. But I tried the exact same thing on altera's DE0 board and everything works fine there. So I don't know if there is any additional thing I need to do to make it work. I am still using an Altera Download Cable to access my own PCB.

Anyone have any suggestions or any ideas? Anything would help at this point lol

Thanks.

Jack