#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();    
}