Mad-Pascal

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Introduction

Mad-Pascal (MP) is a 32-bit Turbo Pascal compiler for Atari XE/XL. By design, it is compatible with the Free Pascal Compilator (FPC) (the -MDelphi switch should be active), which means the possibility of obtaining executable code for XE/XL, PC and every other platform for which FPC exists.

MP is not a port of FPC; it has been written based on of SUB-Pascal (2009), XD-Pascal (2010), the author of which is Vasiliy Tereshkov.

A program that works on Atari might have problems on PC if, for example, the pointers have not been initialized with the address of a variable and the program attempts to write to the address $0000 (memory protection fault).

The strengths of MP include fast and convenient possibility of inclusion of inline assembly. A program using inline ASM does not work on platforms other than XE/XL. MP uses 64KB of primary memory; TMemoryStream provides usage of extended memory.

Variable allocation is static; there is no dynamic memory management. Parameters are passed to functions by value, variable or constant.

The available features are:

• If Case For To For In While Repeat statements
• Compound statements
• Label Goto statements
• Arithmetic and boolean operators
• Procedures and functions with up to 8 parameters. Returned value of a function is assigned to a predefined RESULT variable
• Static local variables
• Primitive data types, all types except the ShortReal/Real type are compatible. Pointers are dereferenced as pointers to Word:
  • Cardinal Word Byte Boolean
  • Integer SmallInt ShortInt
  • Char String PChar
  • Pointer File Text
  • ShortReal Real fixed-point
  • Float16
  • Single
• One-dimensional and Two-dimensional arrays (with zero lower bound) of any primitive type. Arrays are treated as pointers to their origins (like in C) and can be passed to subroutines as parameters
• Predefined type String [N] which is equivalent to array [0..N] of Char
• Type aliases
• Records
• Objects
• Separate program modules
• Recursion

Usage

WUDSN + Mad Pascal

Mad Pascal i Geany

mp.exe filename.pas -ipath:<MadPascalPath>\lib
mads.exe filename.a65 -x -i:<MadPascalPath>\base

BAT

    <MadPascalPath>\MP.exe %1 -ipath:<MadPascalPath>\lib -ipath:<MadPascalPath>\blibs

    if exist %~dp1%~n1.a65 (
            mads.exe "%~dp1%~n1.a65" -xli:<MadPascalPath>\base
            if exist "%~dp1%~n1.obx" altirra "%~dp1%~n1.obx"
    )

mp.exe -t c64 filename.pas -ipath:<MadPascalPath>\lib
mads.exe filename.a65 -x -i:<MadPascalPath>\base

mp.exe -t c4p filename.pas -ipath:<MadPascalPath>\lib
mads.exe filename.a65 -x -i:<MadPascalPath>\base

mp.exe -t raw filename.pas -ipath:<MadPascalPath>\lib
mads.exe filename.a65 -x -i:<MadPascalPath>\base

Tools

Simple Atari Mad-Pascal common project bootstrap.

Source code at GitLab

Set of custom libraries for MadPascal.

Lastest documentation always at GitLab

Custom tool for generating documentation from pascal comments in units.

Source code at GitLab

Effectus - Action! compiler

In new version the source code is generated by using Mad Pascal cross-compiler, which is further compiled to binary code with Mad Assembler.

Simple game tutorial by using Mad Pascal

Display List program editor for 8-bit Atari ANTIC chipset

Simple binary data manipulation tool written in javascript (export to Action!, Assembler, C, Pascal)

CutAs, FiDL, SprED, Sprite XL

Projects in Mad-Pascal

Benchmarks

	CC65	Mad Pascal	Millfork
Sieve (less is better)	602	577	579
YoshPlus (higher is better)	41933	41933	41933
Chessboard (higher is better)	76	88	82

https://github.com/tebe6502/Mad-Pascal/blob/master/samples/benchmark.7z

Floating Point

iteration x 256	Atari OS	FastChip	MP Single	MP Real
add, sub, mul, div	232	118	64	99
add, sub, mul, div, sin, cos	5820	2915	3728	1231

• MP Single: IEEE754-32bit
• MP Real: Q24.8 Fixed Point

https://github.com/tebe6502/Mad-Pascal/blob/master/samples/fp_benchmark.7z

Suite

sources

Links

YouTube

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