From efb5821ab69e577634bd224a414b04de133c6049 Mon Sep 17 00:00:00 2001
From: Vince Weaver <vince@deater.net>
Date: Sun, 7 Oct 2018 16:29:40 -0400
Subject: [PATCH] space_bars: more work on timing split

---
 space_bars/game.s         |  48 +++++++-----
 space_bars/screen_split.s | 150 +++++++++++++++++++++++++++++++++++++-
 2 files changed, 180 insertions(+), 18 deletions(-)

diff --git a/space_bars/game.s b/space_bars/game.s
index ee2d185f..9604922a 100644
--- a/space_bars/game.s
+++ b/space_bars/game.s
@@ -214,7 +214,7 @@ sbloopD:dex								; 2
 sb_mixed:
 	nop		;kill 6 cycles (room for rts)	; 2
 	nop						; 2
-	ldy	#144					; 2
+	ldy	#126					; 2
 
 sb_mixed_loop:
 	nop
@@ -231,16 +231,27 @@ sb_mixed_loop:
 							; in vblank
 
 
-	; delay 144*65 =  9360
 
-	; Try X=37 Y=49 cycles=9360
+sb_all_gr:
+	; 18 lines of this
 
-;	ldy	#49							; 2
-;sbloopE:ldx	#37							; 2
-;sbloopF:dex								; 2
-;	bne	sbloopF							; 2nt/3
-;	dey								; 2
-;	bne	sbloopE							; 2nt/3
+	; 18 * 65 = 1170
+	;             -4
+	;             -5
+	;       =========
+	;	    1161
+
+	bit	LORES						; 4
+
+
+	; Try X=22 Y=10 cycles=1161
+
+	ldy	#10							; 2
+sbloopE:ldx	#22							; 2
+sbloopF:dex								; 2
+	bne	sbloopF							; 2nt/3
+	dey								; 2
+	bne	sbloopE							; 2nt/3
 
 
 
@@ -249,17 +260,14 @@ sb_mixed_loop:
 	;======================================================
 
 	; do_nothing should be      4550
-	;			     - 5 from above
 	;			     -10 keypress
 	;			===========
-	;			    4535
+	;			    4540
 
-	; Try X=40 Y=22 cycles=4533 R2
+	; Try X=9 Y=89 cycles=4540
 
-	nop
-
-	ldy	#22							; 2
-sbloop1:ldx	#40							; 2
+	ldy	#89							; 2
+sbloop1:ldx	#9							; 2
 sbloop2:dex								; 2
 	bne	sbloop2							; 2nt/3
 	dey								; 2
@@ -277,9 +285,15 @@ sb_start_over:
 	rts						; 6
 
 
+
+
+
+.align $100
+.include "screen_split.s"
+
+
 ;.include "deater.inc"
 background_hgr:
 .incbin "SB_BACKGROUNDC.BIN.lz4",11
 background_hgr_end:
 
-.include "screen_split.s"
diff --git a/space_bars/screen_split.s b/space_bars/screen_split.s
index 6a27769c..a338cade 100644
--- a/space_bars/screen_split.s
+++ b/space_bars/screen_split.s
@@ -14,9 +14,10 @@
 ; 32 NnBBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbNnRrrrrr
 ; 36 BBBBNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnNnbbbbRrrrrr
 
+; add 23 each time?
 
 
-
+	; 23 bytes in size?
 split_4:
 	nop
 	nop
@@ -59,6 +60,153 @@ split_8:
 	nop
 	rts
 
+split_12:
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	rts
+
+split_16:
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	nop
+	nop
+	nop
+	nop
+	rts
+
+split_20:
+	nop
+	nop
+	nop
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	nop
+	nop
+	nop
+	rts
+
+split_24:
+	nop
+	nop
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	nop
+	nop
+	rts
+
+split_28:
+	nop
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	nop
+	rts
+
+split_32:
+	nop
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	nop
+	rts
+
+split_36:
+	bit	LORES
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bit	HIRES
+	rts
+
 
 
 	;       6       4       25+16+8+16  NNNNNNNN