ds: work on missing

demosplash/Makefile

@@ -53,6 +53,7 @@ musictest.o:	musictest.s \
 	pt3_lib_init.s pt3_lib_core.s pt3_lib_mockingboard.s \
 	pt3_lib_play_frame.s pt3_lib_write_frame.s \
 	interrupt_handler.s \
+	missing.s missing_screen_update.s \
 	dya_space_demo2.pt3
 	ca65 -o musictest.o musictest.s -l musictest.lst
 

demosplash/NOTES

@@ -0,0 +1,90 @@
+14 * 256 = 3.5k, 4.2s
+	* 5 =17.5k, 21s
+
+compact=11
+
+11*256=2.75k
+	* 6 = 16.5k, 25s
+
+
+
+30 unique tracks
+	64*4=256
+
+
+
+0=A_low
+1=A_high (half)
+2=B_low
+3=B_high (half)
+4=C_low
+5=C_high (half)
+6=Noise (5bits)
+7=enable		
+8=A_amp (4+envelope)
+9=B_amp (4+envelope)
+10=C_amp (4+envelope)
+11=EnvelopeL
+12=EnvelopeH
+13=Envelope_Shape (half)
+
+
+ 0  1  0  1  2  3  2  4
+ 5  6  7  8  9 10  9 11
+12 13 14 15 19 16 17 18
+20 21 22 23 24 25 30 26
+27 28 29
+
+35 segments = 64*3= 192 bytes each, 3.2s*35 = 112 1:52s
+
+; Possible solution
+; Text message transition
+; if 15%, can decode 6 frames for each one played?
+; 
+
+
+2:07
+	:30 to start of actual music
+	:43 start upbeat
+	1:30 end of second blank spot
+	loop
+
+cyc	APPLE II logo (pixel transition)
+cyc	AGT FROGYSUE
+	BOOK w GUN
+	STARBASE
+cyc	ESCAPE
+	message about book?
+cyc	BOOK
+cyc	CREDITS
+
+
+4*11*256=11k
+
+
+
+Memory Map
+~~~~~~~~~~
+0000-00ff		zero page
+0100-01ff		stack
+0200-02ff		?????
+0300-03ff		nibble table, irq vectors
+0400-07FF		lores page1
+0800-0bff		lores page2
+0c00-0fff		(used as page3)
+
+1400-16ff		Loader
+1700-????		executable
+
+9000-bfff		audio buffer
+
+c000-cfff		I/O
+d000-ffff		ROM
+
+
+
+Size:
+	base+music+a2intro = 10k (compress to 6k)
+		+ missing = additional 10k
+
+	missing = 20k, comment out displaycode 12k, so 8k of display code

demosplash/gr_copy.s

@@ -53,6 +53,8 @@ gr_copy_line:
 
 	dey			; decrement pointer			; 2
 	bpl	gr_copy_line	;					; 2nt/3
-
+gr_copy_line_end:
 	rts								; 6
 
+
+.assert >gr_copy_line = >gr_copy_line_end, error, "gr_copy_to_current crosses page"

demosplash/musictest.s

@@ -90,7 +90,19 @@ frame_decode_loop:
 	; apple II intro
 	;============================
 
-	jsr	appleII_intro
+	nop
+	nop
+	nop
+
+
+;	jsr	appleII_intro
+
+
+	;===========================
+	; missing scene
+	;===========================
+
+	jsr	missing_intro
 
 	;===========================
 	; show some pictures
@@ -101,11 +113,7 @@ frame_decode_loop:
 
 ;	cli	; enable interrupts
 
-	;===========================
-	; missing scene
-	;===========================
 
-;	jsr	missing_intro
 
 	;===========================
 	; starbase scene
@@ -147,6 +155,8 @@ wait_until_keypressed:
 ; Apple II intro
 .include "appleII_intro.s"
 .include "appleII_40_96.inc"
+
+.align $100
 .include "vapor_lock.s"
 .include "delay_a.s"
 .include "gr_unrle.s"
@@ -163,7 +173,7 @@ wait_until_keypressed:
 
 
 ; missing
-;.include "missing.s"
+.include "missing.s"
 
 ; Starbase
 ;.include "starbase.s"