大家帮忙看看是什么意思？ 意思, 帮忙

stiffzhang

ATTRIBUTE SYN_KEEP :INTEGER ;
ATTRIBUTE SYN_KEEP OF TxOutput,TxCNT_r,TSR,TxParity_r :SIGNAL IS 1;
ATTRIBUTE SYN_KEEP OF ThrEmpty,TsrEmpty:SIGNAL IS 1;
ATTRIBUTE OPT :STRING ;
ATTRIBUTE OPT OF TxOutput,TxCNT_r,TSR,TxParity_r :SIGNAL IS "KEEP";
ATTRIBUTE OPT OF ThrEmpty,TsrEmpty:SIGNAL IS "KEEP";

ATTRIBUTE 怎么用法啊？

stiffzhang

这几句话是说什么意思啊？？