AR# 426: XABEL 5.0, XC7000 EPLD: Trouble accessing D1 and D2 alu pins
AR# 426
XABEL 5.0, XC7000 EPLD: Trouble accessing D1 and D2 alu pins
解决方案
There is no support for the D1 and D2 inputs of an XC7000 EPLD in XABEL 5.0. Customers wishing to explicity constrain a signal to the D1 or D2 inputs of an EPLD high density function block must either use PLUSASM, or define a PLUSASM PROPERTY in XABEL. However, equations defined by PLUSASM PROPERTY are not recognized by the XABEL compiler. Consequently they are not simulatable and can cause errors if used in conjunction with normal XABEL equations.