keypadscan.cxt

来自「一个veriloghdl编写的键盘扫描程序」· CXT 代码 · 共 138 行 · 第 1/3 页

<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE Document [


<!ELEMENT Document (Net*, Globals*, Lb+)>
<!ATTLIST Document
	Version CDATA #REQUIRED
	Module CDATA #REQUIRED
	Date CDATA #REQUIRED
	Device CDATA #REQUIRED
>

<!ELEMENT Globals (InBuf*, GlblBuf*, ClkDiv*, SDot*)>

<!ELEMENT Net (Activity?)>
<!ATTLIST Net
	NNm CDATA #REQUIRED
	IoT (in | out | bidi | none) #REQUIRED
	Loc CDATA #IMPLIED
	ClkT (G | U) #IMPLIED
	SNm CDATA #IMPLIED
>

<!ELEMENT Activity EMPTY>
<!ATTLIST Activity
	Freq CDATA #IMPLIED
	DutyCycle CDATA #IMPLIED
>



<!ELEMENT InBuf (IPort, OPort*)>
<!ATTLIST InBuf
	Nm CDATA #REQUIRED
	IOS (LVTTL | LVCMOS15 | LVCMOS18 | LVCMOS25 | LVCMOS33 | HSTL_I | SSTL2_I | SSTL3_I | STRIG) #REQUIRED
	DataGate (Y | N) #REQUIRED
>

<!ELEMENT GlblBuf (IPort)>
<!ATTLIST GlblBuf
	Nm CDATA #REQUIRED
	GType (GOE | GSR | GCK | GCK2 | CDRST | GDGATE) #REQUIRED
>

<!ELEMENT ClkDiv (IPort, OPort)>
<!ATTLIST ClkDiv