Visible to Intel only — GUID: reference_TCL_tcl_pkg_jtag_ver_1_0_cmd_device_virtual_ir_shift
Ixiasoft
Visible to Intel only — GUID: reference_TCL_tcl_pkg_jtag_ver_1_0_cmd_device_virtual_ir_shift
Ixiasoft
3.1.18.8. device_virtual_ir_shift (::quartus::jtag)
The following table displays information for the device_virtual_ir_shift Tcl command:
Tcl Package and Version | Belongs to ::quartus::jtag |
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Syntax | device_virtual_ir_shift [-h | -help] [-long_help] -instance_index <instance index> -ir_value <instruction register value> [-no_captured_ir_value] [-show_equivalent_device_ir_dr_shift] | ||
Arguments | -h | -help | Short help | |
-long_help | Long help with examples and possible return values | ||
-instance_index <instance index> | The index of the virtual JTAG instance | ||
-ir_value <instruction register value> | Value to be written into the instruction register in this instance. Operand must be of a TCL numerical type such as decimal (10), hexadecimal (0xa), or octal number (012) | ||
-no_captured_ir_value | Option to not return the captured instruction register value. If this is specified, this IR scan may be packed together with the subsequent IR or DR scan until the device is unlocked or a captured value is requested | ||
-show_equivalent_device_ir_dr_shift | Option to show equivalent device ir and dr shifts performed by this command | ||
Description | Writes the specified value into the instruction register of the specified virtual JTAG instance in the open device. Returns the captured instruction register value. You can disable the captured value return to improve the JTAG communication speed by packing multiple IR or DR scans together. The command also activates the target instance such that the consequent virtual DR shift operations are applied to this instance before the device is unlocked. Before any virtual DR shift operation, this command must be executed first to activate the instance. The device must be locked first before this operation. |
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Example Usage |
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