PIC18_SDCC: Improve README

This patch improves the README file

Signed-off-by: Abdoulaye Walsimou Gaye <walsimou@walsimou.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/Demo/PIC18_SDCC/README b/Demo/PIC18_SDCC/README
index edbff0c8..1f86927b 100644
--- a/Demo/PIC18_SDCC/README
+++ b/Demo/PIC18_SDCC/README
@@ -107,6 +107,21 @@ To compile another demo application, instead of the default (main.c), just type:
 
 where alternate_main.c indicates another existing main file.
 
+NOTES:
+At this moment of writing you can compile demo application for the following devices:
+18f4520, 18f452, 18f4580, 18f97j60.
+Other supported devices can be used but you need to their linker script.
+By default, when you compile a demo application, you compile it for pic18f452. To use
+another just type:
+
+ #make DEVICE=alternate_device
+
+or:
+
+ #make DEVICE=alternate_device MAINFILE=alternate_main.c
+
+Where alternate_device is 18f4520 or 18f4580 or 18f97j60
+
 II-2 Simulating
 
 Assuming that you have installed gpsim and compiled a demo application, to run a
@@ -121,6 +136,11 @@ In windows menu, you will have access to various item as:
  Symbols: shows you your application variables and you PIC18 registers.
  Watch: you can watch here symbols.
 
+NOTES:
+At this moment of writing you can simulate demo application for the following devices:
+18f452
+This is because gpsim only support pic18f452, for the moment.
+
 III How to add your applications
 
 To add a new demo apllication, or your realtime application, add a file containing your