gbasys

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- added bg2 matrix support - changed some stupid const pointers to register addresses to hardcoded compile-time defines
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 22 Jun 2014 06:26:11 +0300
parents e3dc7705ad9c
children 85f219fcdc82
line source
1 /*
2 Copyright 2004-2012 John Tsiombikas <nuclear@member.fsf.org>
3
4 This file is part of gbasys, a library for GameBoy Advance development.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #ifndef _INTR_H_
22 #define _INTR_H_
23
24 /* interrupts */
25 enum {
26 INTR_VBLANK,
27 INTR_HBLANK,
28 INTR_VCOUNT,
29 INTR_TIMER0,
30 INTR_TIMER1,
31 INTR_TIMER2,
32 INTR_TIMER3,
33 INTR_COMM,
34 INTR_DMA0,
35 INTR_DMA1,
36 INTR_DMA2,
37 INTR_DMA3,
38 INTR_KEY,
39 INTR_GPAK
40 };
41
42 #define REG_INTR_MASTER (*(unsigned short*)0x4000208)
43 #define REG_INTR_MASK (*(unsigned short*)0x4000200)
44 #define REG_INTR (*(unsigned short*)0x4000202)
45
46 void intr_init(void);
47
48 /* set/clear interrupts */
49 #define set_int() do {REG_INTR_MASTER = 1;} while(0)
50 #define clr_int() do {REG_INTR_MASTER = 0;} while(0)
51
52 /* set an interrupt handler */
53 void interrupt(int intr, void (*handler)(void));
54
55 /* mask/unmask an interrupt */
56 #define mask(intr) do {REG_INTR_MASK ^= 1 << (intr);} while(0)
57 #define unmask(intr) do {REG_INTR_MASK |= 1 << (intr);} while(0)
58
59 #endif /* _INTR_H_ */