COUNT0.D = !COUNT0 ; // toggle COUNT1.D = COUNT0 $ COUNT1 ;
/** Intermediate nodes **/ NODE = BURIED_REG ; wincupl gal22v10
| 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) | COUNT0
Here’s a deep, technical, and architectural text on and the GAL22V10 — aimed at someone who understands digital logic but wants to go beyond the surface. 1. The Context: Why WinCUPL and the GAL22V10 Still Matter The GAL22V10 (Generic Array Logic, 22 inputs, 10 outputs, 22V10 family) is a CMOS EEPROM-based PLD from Lattice (originally from National Semiconductor). It’s the most flexible member of the 16V8/20V8/22V8/22V10 series. WinCUPL is the Windows IDE for CUPL (Cornell University Programming Language) — a hardware description language older than VHDL/Verilog but still used for simple PLDs. It’s the most flexible member of the 16V8/20V8/22V8/22V10