More copper fun

016.copper_fun/Makefile

@@ -3,13 +3,24 @@ EXTRA=out/copper-new.s
 LIBS=`GraphicsMagick-config --ldflags --libs`
 MODULE=copper_fun.s
 BASE_ADDRESS=10000
+GIF_FILE=assets/test.gif
+RUN_SCRIPT=$(A500_RUN_SCRIPT)
+FRAMERATE=10
+VASM_EXTRA_ARGS=-DFRAMERATE=$(FRAMERATE)
+IMAGE_MAGIK_CONVERT=/opt/ImageMagick/bin/convert
 include ../shared/base.mk
 
-out/copper-new.s: assets/test.gif out/copper_fun_generate
+out/copper-new.s: $(GIF_FILE) out/copper_fun_generate convert.sh
 	rm -f out/*.png
-	/opt/ImageMagick/bin/convert assets/test.gif out/%05d.png
+	$(IMAGE_MAGIK_CONVERT) $(GIF_FILE) out/%05d.png
 	./convert.sh > out/copper-new.s
 
 out/copper_fun_generate: copper_fun_generate.c Makefile
 	gcc $(HOST_CFLAGS) `GraphicsMagick-config --cppflags` copper_fun_generate.c  -o out/copper_fun_generate $(LIBS)
 
+video: GIF_FILE:=assets/video.gif
+video: all
+
+vgo: RUN_SCRIPT:=$(A600_RUN_SCRIPT)
+vgo: video go
+

016.copper_fun/README.md

@@ -1,9 +1,31 @@
 copper fun
 ==========
 
-screenshot
-----------
-![Screenshot](screenshot.png?raw=true)
+In this example I extract a series of PNG files from an animated gif using ImageMagik convert (You will need to install ImageMagik to try this one).
+
+Next a shell script [convert.sh](convert.sh) calls a C program [copper_fun_generate.c](copper_fun_generate.c) that resizes the PNG to 52x276 pixels, then converts this into a copper list that changes the color at the corresponding beam position to try and re-create the image.
+
+Finally in the asm code [copper_fun.s] we cycle through the copper lists to make an animation.
+
+Obviously this is the lease efficent way to generate a super low res animation, however it's way fun :-)
+
+There are two configurations:
+
+      1.  A pattern that will run an 512mb chip ram
+       ```
+ # make
+```
+      2. A video that needs 1bm chip ram
+	
+       ```
+ # make video
+```
+
+screenshots
+-----------
+![Screenshot](screenshots/screenshot.png?raw=true)
+
+![Screenshot](screenshots/video.png?raw=true)
 
 try it
 ------

016.copper_fun/convert.sh

@@ -1,11 +1,16 @@
+#!/bin/bash
 ODD=1
+COUNTER=1
 for I in out/*.png; do
     if [ $ODD = 0 ] ; then
-	echo `echo $I | sed -e 's/\///' -e 's/\.png//'`":"
-	./out/copper_fun_generate $I
+	if [ $COUNTER -lt 16 ] ; then
+	    ((COUNTER++))
+	    echo `echo $I | sed -e 's/\///' -e 's/\.png//'`":"
+	    ./out/copper_fun_generate $I
 	#mv -f resized.png $I.resized.png
-	echo "        dc.l	\$fffffffe"
-	ODD=1
+	    echo "        dc.l	\$fffffffe"
+	    ODD=1
+	fi
 
     else
 	ODD=0

016.copper_fun/copper_fun.s

@@ -31,10 +31,8 @@ entry:
 	move.w	#SCREEN_WIDTH_BYTES*SCREEN_BIT_DEPTH-SCREEN_WIDTH_BYTES,BPL1MOD(a6)
 	
 	;; install copper list, then enable dma and selected interrupts
-	if 0
 	lea	copper(pc),a0	
 	move.l	a0,COP1LC(a6)
-	endif
 	move.w  COPJMP1(a6),d0
 	move.w	#(DMAF_SETCLR!DMAF_COPPER!DMAF_RASTER!DMAF_MASTER),DMACON(a6)
 	move.w	#(INTF_SETCLR|INTF_INTEN|INTF_EXTER),INTENA(a6)
@@ -47,7 +45,7 @@ entry:
 	move.l	a1,(a0)
 
 	move.l	counter,d0
-	cmpi.l	#2,counter
+	cmpi.l	#FRAMERATE/2,counter
 	bne	.ok
 	move.l	#0,counter
 	move.l	copperptr,a0

016.copper_fun/copper_fun_generate.c

@@ -23,7 +23,7 @@ typedef struct {
 } image_t;
 
 image_t image = {0};
-config_t config = {.blur = 1.0, .debug=0};
+config_t config = {.blur = 0.75, .debug=0};
 
 static void
 cleanup()

shared/base.mk

@@ -6,11 +6,16 @@ IMAGECONDIR=../tools/imagecon
 IMAGECON=$(IMAGECONDIR)/out/imagecon
 RESIZEDIR=../tools/resize
 RESIZE=$(RESIZEDIR)/out/resize
-
+A500_RUN_SCRIPT=~/Google\ Drive/Amiga/amiga500.sh
+A600_RUN_SCRIPT=~/Google\ Drive/Amiga/amiga600.sh
 ifndef BASE_ADDRESS
 BASE_ADDRESS=70000
 endif
 
+ifndef RUN_SCRIPT
+RUN_SCRIPT=$(A500_RUN_SCRIPT)
+endif
+
 all: bin out $(MAKEADF) $(FLOPPY)
 
 gdrive: all
@@ -20,7 +25,7 @@ test: all
 	cp $(FLOPPY) ~/Projects/amiga/test.adf
 
 go: test
-	 ~/Google\ Drive/Amiga/amiga500.sh
+	 $(RUN_SCRIPT)
 
 list:
 	m68k-amigaos-objdump  -b binary --disassemble-all out/bootblock.bin -m m68k > out/bootblock.txt
@@ -31,7 +36,6 @@ bin:
 out:
 	mkdir out
 
-
 ic:
 	make -C $(IMAGECONDIR)
 
@@ -46,6 +50,8 @@ $(MAKEADF):
 
 $(FLOPPY): out/bootblock.bin
 	$(MAKEADF) out/bootblock.bin > $(FLOPPY)
+	@ls -lh out/bootblock.bin
+	@ls -lh $(FLOPPY)
 
 out/bootblock.bin: out/bootblock.o
 	vlink -brawbin1 $< -o $@