/** Intermediate nodes **/ NODE = BURIED_REG ;
The product term (AR) is shared across all registered outputs — a limitation: you cannot individually reset registers without external logic. 3. WinCUPL — The Language and Compiler CUPL is a macro-based, state-machine-oriented PLD language . Unlike VHDL, it maps directly to AND-OR arrays. 3.1 Key constructs for the 22V10 Name Example ; PartNo 01 ; Date 2026/04/17 ; Revision 01 ; Designer Engineer ; Company Firm ; Assembly None ; Location None ; Device g22v10 ; /** Inputs **/ PIN 1 = CLK ; // dedicated clock PIN 2 = A0 ; PIN 3 = A1 ; PIN 11 = OE_N ; // output enable wincupl gal22v10
EQUATIONS READY = !OE_N & (ADDR:'h'5) ; // active low OE /** Intermediate nodes **/ NODE = BURIED_REG ;
COUNT0.D = !COUNT0 ; // toggle COUNT1.D = COUNT0 $ COUNT1 ; Unlike VHDL, it maps directly to AND-OR arrays
/** Outputs **/ PIN 12 = READY ; // combinational PIN 13 = COUNT0 ; // registered PIN 14 = COUNT1 ;
/** Logic **/ FIELD ADDR = [A3..0] ;
| Feature | Options | |---------|---------| | | Combinational, registered (D-FF), or latched | | Polarity | Active high or low (inverting output) | | Feedback path | From pin, from register, or from input-only pin | | Output enable | Global OE pin or product term controlled | | Asynchronous reset | Product term (global async reset pin possible) | | Synchronous preset | Product term (clocked) | | Clock source | Dedicated CLK pin or product term (but caution) |