Hi Andreas,

this is often used to download programs to RAM
and also described in the C-manual.
I use the Keil-C51 but I think you can adapt it to Franklin:

1.
you must first redirect all interrupt vectors in the
EPROM at 0000h to the RAM, e.g.
org 3
ljmp 8003h
org 0bh
ljmp 800bh
org 13h
ljmp 8013h
....
org 0fbh
ljmp 80fbh

2.
you must change in the file "startup.a51"
the line: "cseg at 0" to "cseg at 8000h".
My hint: copy the original to a different
name e.g. "startup8.a51" and alter this.

Then you must assemble it to an object
file.

3.
All C files with interrupts must be compiled is this way:
c51.exe xxx.c INTVECTOR (0X8000)

4.
All C files must located by the linker in this way:
l51.exe xxx.obj, startup8.obj CODE (8000h)

xxx mean the name of your c file.


Peter