chanbara: guru confirmed that enemy spawn bug happens on pcb

src/mame/dataeast/chanbara.cpp

@@ -45,14 +45,14 @@ Notes:
 ------------------------
 
 TODO:
-- Verify what happens if you skip an enemy, on MAME the next one may appear out of
-  thin air. MAME previously showed garbage sprites moving fast to the left and later
-  changing into an enemy character, disable the (~attr & 0x01) check to see.
 - BGM tempo is too slow, what is it caused by? See https://mametesters.org/view.php?id=8024
 
 BTANB:
-- on enemies that hide behind the roof on the 3rd level, their feet are visible below
+- If you skip an upper floor enemy (just walk under them), the next time one shows up,
-  the roof, and their head is behind the sky
+  it may appear out of thin air instead of scrolling in from the right. This doesn't
+  happen when skipping lower floor enemies.
+- On enemies that hide behind the roof on the 3rd level, their feet are visible below.
+  the roof, and their head is behind the sky.
 
 ****************************************************************************************/
 
@@ -188,7 +188,7 @@ void chanbara_state::draw_sprites(screen_device &screen, bitmap_ind16& bitmap, c
 		int sx = (240 - m_spriteram[offs + 3]) & 0xff;
 		int sy = (240 - m_spriteram[offs + 2]) & 0xff;
 
-		// disabled?
+		// not visible
 		if (~attr & 0x01)
 			continue;