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13 lines
558 B
Tcl
Executable File
13 lines
558 B
Tcl
Executable File
create_clock -period 28MHz -name {clk28} [get_ports {clk_in}]
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# clkcpu 3.5 or 7 MHz
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create_generated_clock -name {clkcpu} -divide_by 4 -source [get_ports {clk_in}] [get_registers {cpucontrol:cpucontrol0|clkcpu}]
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# hc0[2] 3.5 MHz
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create_generated_clock -name {hc0_2} -divide_by 8 -source [get_ports {clk_in}] [get_registers {screen:screen0|hc0[2]}]
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# hsync len 4.7uS, 14e6/(1/4.7e-6) ~= 65
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create_generated_clock -name {hsync} -divide_by 126 -source [get_ports {clk_in}] [get_registers {screen:screen0|hsync}]
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derive_pll_clocks
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derive_clocks -period 14MHz |