In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote:

James,
I managed to resolve address references without sasm.
Basically, a small c program only consists of rom (the program and initializers)
and ram (variables, heap and stack), both areas may not overlap.
I use the M4 macro processor as a two pass 'assembler' that generates
a list of byte values.
It is up to the interpreter to remap memory areas into builtin memory,
external memory or ports.
The only glue logic is a BIOS call with a 2 byte operand.
The order in which files are generated:
c source (testgen.c) compiles into testgen.m4
M4 then assembles testgen.m4 into testgen.txt
This testgen.txt has quite a lot of blank lines that I
remove with a utility with testgen2.txt as result
pcodedef.txt holds the pcode definitions.

Now I will write an interpreter for the javelin
(so when sx/c comes along I can port that to the sx).

regards peter

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