updates

2015-08-18 14:00:59 -04:00 · 2015-08-18 14:00:59 -04:00 · 84589f01a6
parent 82f5f14026
commit 84589f01a6
2 changed files with 13 additions and 0 deletions
--- a/fst.equ
+++ b/fst.equ
@ -53,6 +53,9 @@ dirent_offset		equ mark+2 ; current directory offset

 dirent_entry		ds.w 1 ; current directory entry.

+;data_zone		ds.w 1 ; current zone * 2
+;data_block		ds.w 1 ; 0 if invalid.
+;data			ds.b 1024 ; ?

 __sizeof		equ *
 			endr
--- a/fst.macros
+++ b/fst.macros
@ -262,3 +262,13 @@
@ok
 	mend

+	; reverse subtract.
+	macro
+&l	rsb &target
+	eor #$ffff
+	sec
+	adc &target
+	mend
+
+
+