1 files changed, 41 insertions, 0 deletions
diff --git a/home/math.asm b/home/math.asm
new file mode 100644
index 0000000..2f3b408
--- /dev/null
+++ b/home/math.asm
@@ -0,0 +1,41 @@
+include "constants.asm"
+
+if DEBUG
+SECTION "Home Math", ROM0[$341F]
+else
+SECTION "Home Math", ROM0[$33E3]
+endc
+
+_341F:: ; 341f
+; Returns hl + a * 6
+    and a
+    ret z
+    ld bc, 6
+.loop:
+    add hl, bc
+    dec a
+    jr nz, .loop
+    ret
+
+AddAMulBC:: ; 3429
+; Returns hl + a * bc
+    and a
+    ret z
+.loop:
+    add hl, bc
+    dec a
+    jr nz, .loop
+    ret
+
+memcmp:: ; 3430
+; Compare c bytes at hl and de
+; Returns z if all equal, nz otherwise.
+.loop:
+    ld a, [de]
+    cp [hl]
+    ret nz
+    inc de
+    inc hl
+    dec c
+    jr nz, .loop
+    ret