Dear FPGA colleagues, please, for short ignore the fact that XPS is discontinued implementation tool by Xilinx - I have to use it now. Problem: I remember having instatiated IOBUFS inside the top-level MHS-file of a FPGA project. But I can't remeber how this was done. One way is to do the following: PORT i2c_sda_0_I = "", DIR = I PORT i2c_sda_0_O = "", DIR = O PORT i2c_sda_0_T = "", DIR = O PORT i2c_sda_0 = "", DIR = IO, THREE_STATE = TRUE, TRI_I = i2c_sda_0_I, TRI_O = i2c_sda_0_O, TRI_T = i2c_sda_0_T where now i2c_sda_0 is the IO inout of the IOBUFFER. Assume I have a signal "to_z_iobuf" that is constantly high and I want it to put it onto the tri-state enable input T of the IOBUF such that the FPGA pad is constantly on high impedance 'Z'. Can I do: BEGIN IOBUF PARAMETER INSTANCE = iobuf_inst01 PORT I = proc_sys_reset_0_BUS_STRUCT_RESET PORT LMB_CLK = clk_120_0000MHz END Or am I completely wrong and there is no way to separately instantiate them inside the MHS? Cheers Markus
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