Mad Pascal Compiler for 6502 (Atari XE/XL, C64, C4Plus, Neo6502)
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 6502 CPU. 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
statementsLabel
Goto
statementsRESULT
variableShortReal
, 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
/ FloatString
[N]
which is equivalent to array [0..N] of Char
Type
aliasesRecords
Objects
fpc -MDelphi -vh -O3 mp.pas
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 neo 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
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
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
This is a text mode windowing library complete with window controls and modern gadgets (widgets). The gadgets allow you to build input forms that use buttons, radio buttons, input strings (with scrolled lengths and type restrictions), check boxes, progress bars, etc. This allows you to build applications with "modern"-ish interfaces.
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
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 |
https://github.com/tebe6502/Mad-Pascal/blob/master/samples/fp_benchmark.7z