added more help

1 files changed, 16 insertions, 1 deletions

diff --git a/fpgaedit.y b/fpgaedit.y
index dac18ad..083a89c 100644
--- a/fpgaedit.y
+++ b/fpgaedit.y
@@ -149,12 +149,26 @@ void print_help (void) {
 	printf ("\n");
 	printf ("open <file>			open a file\n");
 	printf ("close				close currently opened file\n");
+	printf ("exit, quit			quit\n");
+	printf ("help				show this help text\n");
+	printf ("\n");
 	printf ("md [<start> [<end>]]		mem display from current position\n");
 	printf ("				or from <start> to <end>\n");
 	printf ("mm <offset> <val1> .. <valN>	modify from value <offset>\n");
 	printf ("<var> = <expr>			set variable <var> to <expr>\n");
 	printf ("<var>				print variable <var>\n");
 	printf ("\n");
+	printf ("<var1> add <var2>		add variables\n");
+	printf ("<var1> sub <var2>		substract variables\n");
+	printf ("<var1> mul <var2>		multiplicate variables\n");
+	printf ("<var1> div <var2>		divide variables\n");
+	printf ("<var1> rshift <var2>		shift (or >>)\n");
+	printf ("<var1> lshift <var2>		shift (or >> or shift)\n");
+	printf ("\n");
+	printf ("Variables can be entered as decimals (without prefix), hex (prefixed with 0x)\n");
+	printf ("oct (0o) or bin (0b). For mm and md byte, word and long word access can be \n");
+	printf ("enabled with .b, .w and .l\n");
+	printf ("\n");
 }
 
 void set_variable (char *param, int val) {
@@ -260,4 +274,5 @@ void hex_output (int offset, int len, int count) {
 int yylex (void) {
 	printf ("\nPROMPT>");
 	zzlex ();
-}
\ No newline at end of file
+}
+