Dot Extensions Used in the Left Hand Side of Equations
Dot
Extension |
Function
Description |
|
|
Combinatorials | Registers | ||
.ACLR | Device Independent Asynchronous Reset | Illegal | Recommended |
.AP | Asynchronous Preset | Illegal | Allowed |
.AR | Asynchronous Reset | Illegal | Allowed |
.ASET | Device Independent Asynchronous RSet | Illegal | Recommended |
.CE | Clock Enable* | Illegal | Allowed |
.CLK | Clock Input | Illegal | Recommended |
.CLR | Device Independent Synchronous Reset | Illegal | Emulated |
.D | D Flip-Flop** | Illegal | Allowed |
.FC | Flip-Flop Mode Control | Illegal | Illegal |
.J | J Input to JK Flip-Flop | Illegal | Emulated |
.K | K Input to JK Flip-Flop | Illegal | Emulated |
.LD | Register Load Input | Illegal | Illegal |
.LE | Latch Enable - Active Low | Illegal | Emulated |
.LH | Latch Enable - Active High | Illegal | Emulated |
.OE | Output Enable*** | Recommended | Recommended |
.PR | Register Preset | Illegal | Allowed |
.R | R Input to SR Flip-Flop | Illegal | Emulated |
.RE | Register Reset | Illegal | Allowed |
.S | S Input to SR Flip-Flop | Illegal | Emulated |
.SET | Device Independent Synchronous Preset | Illegal | Emulated |
.SP | Synchronous Preset | Illegal | Emulated |
.SR | Synchronous Reset | Illegal | Emulated |
.T | T Input to T Flip-Flop | Illegal | Recommended |