The compiler is the fourth iteration of the Pascal-P system developed at ETH Zurich. It is a portable "compiler-compiler" implementation kit designed to aid in the bootstrapping of Pascal compilers on new machine architectures by producing an intermediate code known as P-Code . Core Components of the P4 System The system typically consists of two main programs:
To use the P4 system for compiler implementation, you follow these steps:
Use the resulting pcom executable to compile your own Pascal program, which produces a P-Code file (often named prr ).
Modern versions and fixes (such as ISO 7185 compliance) are available on platforms like GitHub and Hans Otten's Pascal site . Technical Characteristics
Run the pint interpreter, providing the prr file as input to execute the program. Key Resources and Documentation
By targeting an abstract "P-Machine," the compiler remains machine-independent. To port Pascal to a new system, one only needs to write a P-Code interpreter or a P-Code-to-native-code translator for that specific hardware.
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