Compilers - Many people think that a good high-speed program on an 8-bit machine can only be written in processor codes...

    
    
    
    
    
    

   Many people think it's good   
fast-acting program for
An 8-bit machine can
write only in codes
processor.  Most often this is the case
is being done, but what if
the program must be carried out
complex calculations, because the process
quarrels can only add up and
subtract small integers,
and access to the tracing program-
lator in ROM is associated with such
complex preparatory work
procedures and various nuances,
which can confuse even an experienced
programmer In such a situation
The compiler can help.
Compiled execution speed
bathroom program, of course
inferior to the speed with which
the program written works
directly in machine codes
, but there are no problems with
computing and development
features of assembler, because
creating a program algorithm for
high level language (BASIC)
for example) is much simpler. And about that
what results can be achieved
says what even manybranded programs represent
is a compilation from languages
        high level.        
    We were quite surprised    
discovering that the game STACK UP
by ZEPPELIN GAMES, released
in 1991, was written almost
completely in BASIC and
compiled by primeval
compiler MCODER II 1982
release.  To make it clear about
what we are talking about - this compiler
doesn't understand half the commands
BASIC (they should be avoided in
program) and only works with
integers from -32768 to
+З2768.   True, he accelerates
gives a very significant result. Other
compiler from CRYSTAL
COMPUTING 1983
understands the commands that
not available to MCODER but
refuses to compile
others.     Further searches
led us to the TOBOS FP program
COMPILER and its research
showed that this is exactly what
                  we needed
 (and we need
 was accelerated
 execution    
 programs,    
 building on
 screen        
 3-dimensional      
 graphics       
 functions).     
The compiler understands ALL commands
and SPECTRUM-BASIC operators and
works with any numbers
which are available to BASIC,
including exponential pre-
 setting and floating point. 
BIORITM program in its entirety
written in BASIC builds
biorhythm graphs approximately 20-25
seconds, and being compiled -
TOBOS does it in 1-2
seconds.   Construction of a 3-dimensional
vector graphics that occupied
about 10 minutes (!), reduced
         up to 0.5 minutes.         
The compiler itself takes about
12K and should be in memory - without
his compiled code
won't work. However, this
applies to all mentioned
compilers.  The main limitation
The only difference is the impossibility
processing commands to access
TR-DOS, as in standard
These commands were not in BASIC
         are provided.         
The TOBOS compiler is located in
memory from address 5Z100.
The compiled code is placed
starting from the RAMTOP address, which
installed with the CLEAR command
NN.  Launched by TOBOS command
      RANDOMIZE USR 53100.      
There are a lot of useful homemade ones
programs in BASIC and TOBOS
can become powerfultool
bringing them to a corporate look.
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