starting on horizontal copper stuff

.gitignore

@@ -0,0 +1,6 @@
+.vamosrc
+*.o
+*.uaem
+*.lnk
+*.info
+bin/

build_horizontal_copper.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+vamos sc horizontal_copper.c old_hardware_setup.c link to bin/horizontal_copper

horizontal_copper.c

@@ -0,0 +1,27 @@
+#include <clib/exec_protos.h>
+#include <clib/intuition_protos.h>
+#include <clib/graphics_protos.h>
+#include <graphics/gfxbase.h>
+#include <hardware/custom.h>
+#include <hardware/dmabits.h>
+    
+#include "old_hardware_setup.h"
+    
+extern struct GfxBase *GfxBase;
+extern far struct Custom custom;
+
+int main(void) {
+    struct OldHardwareSetup oldHardwareSetup;
+    
+    oldHardware_takeOver(&oldHardwareSetup);
+    
+    custom.dmacon = DMAF_SETCLR | DMAF_COPPER | DMAF_RASTER;
+    custom.dmacon = DMAF_AUDIO | DMAF_DISK | DMAF_SPRITE | DMAF_BLITTER;
+    
+    // set up a two bitplane display
+    // create a copperlist
+    // how do you write fonts to a bitpane?
+    
+    
+    oldHardware_giveBack(&oldHardwareSetup);        
+}

old_hardware_setup.c

@@ -0,0 +1,46 @@
+#include "old_hardware_setup.h"
+
+void oldHardware_takeOver(struct OldHardwareSetup *oldHardwareSetup) {
+    oldHardwareSetup->OldView = ((struct GfxBase *)GfxBase)->ActiView;
+    oldHardwareSetup->OldCopper = (ULONG)((struct GfxBase *)GfxBase)->copinit;
+ 
+    oldHardwareSetup->OldDMACON = custom.dmaconr | 0x8000;
+    oldHardwareSetup->OldINTENA = custom.intenar | 0x8000;
+    oldHardwareSetup->OldINTREQ = custom.intreqr | 0x8000;
+    oldHardwareSetup->OldADKCON = custom.adkconr | 0x8000;
+  
+    // disable interrupts
+    custom.intena = 0xc000;
+    custom.intena = 0x3fff;
+    
+    LoadView(NULL);
+    WaitTOF();
+    WaitTOF();
+    OwnBlitter();
+    WaitBlit();
+        
+    Forbid();    
+}
+
+void oldHardware_giveBack(struct OldHardwareSetup *oldHardwareSetup) {
+    custom.cop1lc = oldHardwareSetup->OldCopper;
+    LoadView(oldHardwareSetup->OldView);
+    
+    custom.dmacon = 0x7FFF;
+    custom.dmacon = oldHardwareSetup->OldDMACON;
+ 
+    custom.intena = 0x7FFF;
+    custom.intena = oldHardwareSetup->OldINTENA;
+ 
+    custom.intreq = 0x7FFF;
+    custom.intreq = oldHardwareSetup->OldINTREQ;
+ 
+    custom.adkcon = 0x7FFF;
+    custom.adkcon = oldHardwareSetup->OldADKCON;
+  
+    WaitTOF();
+    WaitTOF();
+    WaitBlit();
+    DisownBlitter();
+    Permit();    
+}

old_hardware_setup.h

@@ -0,0 +1,25 @@
+#include <clib/exec_protos.h>
+#include <clib/intuition_protos.h>
+#include <clib/graphics_protos.h>
+#include <graphics/gfxbase.h>
+#include <hardware/custom.h>
+
+#ifndef OLD_HARDWARE_SETUP_H
+#define OLD_HARDWARE_SETUP_H
+
+extern struct GfxBase *GfxBase;
+extern far struct Custom custom;
+
+struct OldHardwareSetup {
+    struct View *OldView;
+    ULONG OldCopper;
+    UWORD OldDMACON;
+    UWORD OldINTENA;
+    UWORD OldINTREQ;
+    UWORD OldADKCON;
+};
+
+void oldHardware_takeOver(struct OldHardwareSetup *oldHardwareSetup);
+void oldHardware_giveBack(struct OldHardwareSetup *oldHardwareSetup);
+
+#endif /* OLD_HARDWARE_SETUP_H */