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| author | ehw <Knuckles500@gmail.com> | 2018-06-05 11:03:34 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-06-05 11:03:34 -0400 |
| commit | a62cf40b29a814188c545e47d7534b6ea3aebcc1 (patch) | |
| tree | 3db618e96e50af65d6831e4ce2540fb0435a954e /home/tables.asm | |
| parent | 771d125c7564a0ff1e511733114d53ad0521c3f8 (diff) | |
| parent | c4c2b3cc6ede5259a1246c195a8c1d58e6d3a35d (diff) | |
Merge pull request #4 from pret/master
Merge master
Diffstat (limited to 'home/tables.asm')
| -rwxr-xr-x | home/tables.asm | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/home/tables.asm b/home/tables.asm new file mode 100755 index 0000000..dc9cebe --- /dev/null +++ b/home/tables.asm @@ -0,0 +1,27 @@ +INCLUDE "constants.asm"
+
+SECTION "FindItemInTable", ROM0[$35F8]
+
+; find value a from table hl with row length de
+; returns carry and row index b if successful
+FindItemInTable: ; 00:35F8
+ ld b, 0
+ ld c, a
+
+.loop
+ ld a, [hl]
+ cp -1
+ jr z, .fail
+ cp c
+ jr z, .success
+ inc b
+ add hl, de
+ jr .loop
+
+.fail
+ and a
+ ret
+
+.success
+ scf
+ ret
|