AR# 38455: 12.2 Schematic - x74_238 component has an invalid drawing
12.2 Schematic - x74_238 component has an invalid drawing
The X74_283 schematic macro is available for CPLD designs. The symbol can be added and appears OK. However, if a user pushes into the symbol, they will see "Error : Symbol Not Found: add4x2"
Attempting to implement a schematic design containing the X74_283 symbol fails in ngdbuild withan error similar to the following.
ERROR:NgdBuild:604 - logical block 'XLXI_1' with type 'X74_283_MXILINX_mytop' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, or the misspelling of a type name. Symbol 'X74_283_MXILINX_mytop' is not supported in target 'xa9500xl'
The add4x2 sub component was removed from the Xilinx libraries. However, the X74_283 component was not updated to correctly use an ADD4 instead of the obsolete ADD4X2.
This drawing error is fixed in ISE Design Suite 12.3.