Calling convention

lcc in common with almost all C compilers prepends a '_' to any function names. For example the function printf(...) begins at the label _printf::. Note that all functions are declared global.

The parameters to a function are pushed in right to left order with no aligning - so a byte takes up a byte on the stack instead of the more natural word. So for example the function int store_byte( UWORD addr, UBYTE byte) would push 'byte' onto the stack first then addr using a total of three bytes. As the return address is also pushed, the stack would contain:

• At SP+0 - the return address

• At SP+2 - addr

• At SP+4 - byte

The function returns in DE. I'm not sure how a FP number is returned.