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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

I figured out a why to make it faster!

The device_ir and device_dr shift command will try to capture the current data in the registers before shifting the new data in. By invoking the -no_captured_ir_value and -no_captured_dr_value, I am able to get it to run at 100-200 KHz. What a difference!

Thanks again for all your help!