From b98ea0479c113b22960b0ce2790ca73676b93ca4 Mon Sep 17 00:00:00 2001
From: Vince Weaver <vince@deater.net>
Date: Sat, 10 Mar 2018 22:07:20 -0500
Subject: [PATCH] chiptune: update timing info

---
 chiptune_player/README.chiptune     | 11 +++++++++++
 chiptune_player/interrupt_handler.s | 11 ++++++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/chiptune_player/README.chiptune b/chiptune_player/README.chiptune
index ce936996..10ed3208 100644
--- a/chiptune_player/README.chiptune
+++ b/chiptune_player/README.chiptune
@@ -459,3 +459,14 @@ lz4/diff:		 13669 bytes (11431 -9)
 gzip/diff:		 10821 bytes
 bzip2/diff:		 10477 bytes
 lzma/diff:		  7257 bytes
+
+
+
+
+Timing:
+=======
+	Originally roughly 1500 cycles from start of interrupt
+	to all registers being written.
+
+	Moved clock to after, near the visualization stuff, more like
+		1378 = 13+ (105*13)
diff --git a/chiptune_player/interrupt_handler.s b/chiptune_player/interrupt_handler.s
index a2b58e7a..74c8767f 100644
--- a/chiptune_player/interrupt_handler.s
+++ b/chiptune_player/interrupt_handler.s
@@ -57,6 +57,8 @@ mb_write_loop:
 	lda	#1		; set done playing			; 2
 
 	jmp	quiet_exit						; 3
+								;===========
+								; typ 13
 
 mb_not_done:
 
@@ -67,6 +69,8 @@ mb_not_done:
 	bne	mb_not_13						; 3/2nt
 	cmp	#$ff							; 2
 	beq	increment_offset					; 3/2nt
+								;============
+								; typ 5
 
 mb_not_13:
 	sta	MB_VALUE						; 3
@@ -83,7 +87,8 @@ mb_not_13:
 					; so write same to both
 					; left/right
 									; 53
-
+								;===========
+								; 68
 	;====================
 	; point to next page
 	;====================
@@ -97,8 +102,8 @@ mb_not_13:
 	cpx	#14			; if 14 we're done		; 2
 	bmi	mb_write_loop		; otherwise, loop		; 3/2nt
 								;============
-								; roughly 95?
-								;  *13= 1235?
+								; 	19
+
 
 
 	;==============================================