This is a cross compiler generating assembly code for ELTE RISC
processor running as a von Neumann type computer.  ELTE RISC is an
extended (by write, system call, resume, interrupt, security, etc.)
version of Donald E. Knuth's processor RISC described his book
Stanford Graphbase.  The compiler modified from the Small-C Compiler
version 2.1 for CP/M written originally by Ron Cane (for 8080, in
1980) and in the final form by James E. Hendrix (for 8080, in 1982,
1983).  Hence, of course Small-C and this compiler, too is much more
closer to the old C version described in the book Kernighan -- Richie:
The C Programming Language, Prentice Hall, Inc., 1978, as to ANSI C.
Hence only differences to the old C version are mentioned here.

Integers and characters are both 16 bit, hence no difference; the
purpose of this to be ready for unicode.  Undeclared identifyers
considered external pointers/functions silently.  No floating point,
long and short, unsigned, bit fields, structures and unions.  Casting
goes silently.

Preprocessing is done, including #asm and #endasm, but no #include:
you may use separate preprocessor.  Assembly code resulting from
separately compiled blocks can be cat together and compiled in this
form by the one pass assembler ERISCAL modified from Donald E. Knuth's
MMIXAL for his MMIX.  No linker and relocateble code.

In spite of this deficiences this Small-C version for ELTE_RISC has
his beauties and completely corresponds to their purposes: students
can be understand it, extend it as exercise, it works from standard
input to standard output hence easy to understand how it translate,
contains a peephole optimiser, capable to translate itself (not even
"for", "do" and "case' instructions are used in the code), and it
would be possible to rewrite in it the Minix operating system of
Tannenbaum.