原创 【笔记】Internal Error: Sub-system: AMERGE

今天编译时报错：

Internal Error: Sub-system: AMERGE, File: /quartus/atm/amerge/amerge_kpt_op.cpp, Line: 220
cmp_merge_kpt_db
Stack Trace:
0x3D9B7   : amerge_mini_merge + 0x3A5D7 (atm_amerge)

End-trace

Quartus II Version 9.0 Build 132 02/25/2009 SJ Full Version

于官网查得相关解决信息：http://www.altera.com/support/kdb/solutions/rd11192009_462.html

Solution ID: rd11192009_462
Last Modified: Nov 24, 2009
Product Category: Design Software
Product Area: Synthesis & Netlist Viewers
Product Sub-area: Quartus II Synthesis

Problem

Internal Error: Sub-system: AMERGE, File: /quartus/atm/merge/amerge_kpt_op.cpp, Line: 220

Solution

This error may occur in the Quartus II software version 8.1, if your HDL code infers a true dual-port synchronous RAM, but one of the output data ports is unconnected in your design.

To work around this error, connect the unconnected output data port to registers in your HDL code.

Note that if these registers have no fan out, you can use the noprune synthesis attribute or the Preserve Fan-out Free Register Node logic option, to prevent the registers from being removed during synthesis. Refer to the Quartus II Integrated Synthesis chapter of the Quartus II Handbook for details on this attribute or logic option.

This problem is fixed beginning with the Quartus II software version 10.0.

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