133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
/*
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: cc_copper.c,v 1.2 1994/01/29 06:58:44 chopps Exp $
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*/
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#include "cc_copper.h"
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/* Wait till end of frame. We should probably better use the
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* sleep/wakeup system newly introduced in the vbl manager (ch?) */
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void
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wait_tof (void)
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{
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while (!(custom.vposr & 0x0007)) { /* wait until bottom of frame.
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;
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}
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while (custom.vposr & 0x0007) { /* wait until until top of frame. */
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;
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}
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if (!custom.vposr & 0x8000) { /* we are on short frame. */
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while (!(custom.vposr & 0x8000)) { /* wait for long frame bit set. */
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;
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}
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}
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}
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cop_t *
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find_copper_inst (cop_t *l, u_word inst)
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{
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cop_t *r = NULL;
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while ((l->cp.data & 0xff01ff01) != 0xff01ff00) {
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if (l->cp.inst.opcode == inst) {
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r = l;
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break;
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}
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l++;
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}
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return (r);
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}
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void
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install_copper_list (struct copper_list *l)
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{
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wait_tof ();
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wait_tof ();
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custom.cop1lc = l;
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}
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#if ! defined (AMIGA_TEST)
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void
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cc_init_copper (void)
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{
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}
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#else /* AMIGA_TEST */
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#define HARDWARE_CUSTOM_H
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#include <graphics/view.h>
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#include <graphics/gfxbase.h>
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#include <inline/graphics.h>
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#include <intuition/classes.h>
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#include <intuition/classusr.h>
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#include <intuition/intuition.h>
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#include <inline/intuition.h>
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#include <inline/exec.h>
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struct View *old;
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struct Task *t;
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extern struct GfxBase *GfxBase;
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void
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cc_init_copper (void)
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{
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old = GfxBase->ActiView;
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t = FindTask (NULL);
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SetTaskPri (t, 127);
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LoadView (NULL);
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WaitTOF ();
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WaitTOF ();
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}
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void
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cc_deinit_copper (void)
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{
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if (t) {
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if (old) {
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LoadView (old);
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WaitTOF ();
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WaitTOF ();
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custom.cop1lc = GfxBase->copinit;
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RethinkDisplay ();
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}
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SetTaskPri (t, 0);
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}
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}
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#endif
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/* level 3 interrupt */
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void
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copper_handler (void)
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{
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custom.intreq = INTF_COPER;
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}
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