Deep Blue C
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Deep Blue C is a compiler for a subset of the C programming language for the Atari 8-bit family distributed by the Atari Program Exchange. The compiler is a version of Ron Cain's public domain Small-C modified by John Howard Palevich to run on the Atari computer hardware. Palevich also wrote the Atari 8-bit game Dandy. The syntax supported by Deep Blue C is close to that of ANSI C with significant limitations.
The source code to the compiler was sold as Deep Blue Secrets, also from APX.
The following language constructs are not supported:
- multidimensional arrays
- floating point numbers
- sizeof operator
- type casting
- functions return integer only results
Other non-standard properties of Deep Blue C:
- The last part of
switchclause must be ended with:
- The maximum length of source code line has to be less than 80 characters.
- The number of arguments for functions cannot exceed 126.
$)are used instead of
The exemplary program writes the "Hello World!" message on the user screen.
main() $( printf("Hello World!"); $)
The Deep Blue C compiler does not create the native executable for 6502 processor but intermediate code called C-code. The C-code is then executed by C-code interpreter. According to Atari 8-bit FAQ the compiler creates binary code for Intel 8080 processor and then executed by 8080 virtual machine. This is the main cause of low performance of generated code.