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Altera_Forum
Honored Contributor
14 years agom25p26
Hi everybody, I have finished a pcb design with a cyclone III Ep3c25q240, it is configurated in AS mode. There are two connector (10 pins), one for the JTAG and the other for the AS. When I dow...
Altera_Forum
Honored Contributor
14 years agoWhen I try to debug the ddr commands with signaltap, some illegal and missing sources appear:
basic_sopc:inst2|altmemddr_0:the_altmemddr_0|mem_cas_n basic_sopc:inst2|altmemddr_0:the_altmemddr_0|mem_ras_n basic_sopc:inst2|altmemddr_0:the_altmemddr_0|mem_we_n " DDIO I/O pins cannot be tapped directly. Tap the hi/lo channels separately." and basic_sopc:inst2|altmemddr_0:the_altmemddr_0|mem_cke basic_sopc:inst2|altmemddr_0:the_altmemddr_0|mem_cs_n "The pre-synthesis tap must be preserved by Analysis & Synthesis before it can be tapped. Set the partition's netlist type to Source and recompile."