ScummVM API documentation
atari-supervidel.h
1 /* ScummVM - Graphic Adventure Engine
2  *
3  * ScummVM is the legal property of its developers, whose names
4  * are too numerous to list here. Please refer to the COPYRIGHT
5  * file distributed with this source distribution.
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation, either version 3 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program. If not, see <http://www.gnu.org/licenses/>.
19  *
20  */
21 
22 #ifndef BACKENDS_GRAPHICS_ATARI_SUPERVIDEL_H
23 #define BACKENDS_GRAPHICS_ATARI_SUPERVIDEL_H
24 
25 #include "common/scummsys.h"
26 
27 #ifdef USE_SUPERVIDEL
28 
29 // bits 26:0
30 #define SV_BLITTER_SRC1 ((volatile long *)0x80010058)
31 #define SV_BLITTER_SRC2 ((volatile long *)0x8001005C)
32 #define SV_BLITTER_DST ((volatile long *)0x80010060)
33 // The amount of bytes that are to be copied in a horizontal line, minus 1
34 #define SV_BLITTER_COUNT ((volatile long *)0x80010064)
35 // The amount of bytes that are to be added to the line start address after a line has been copied, in order to reach the next one
36 #define SV_BLITTER_SRC1_OFFSET ((volatile long *)0x80010068)
37 #define SV_BLITTER_SRC2_OFFSET ((volatile long *)0x8001006C)
38 #define SV_BLITTER_DST_OFFSET ((volatile long *)0x80010070)
39 // bits 11:0 - The amount of horizontal lines to do
40 #define SV_BLITTER_MASK_AND_LINES ((volatile long *)0x80010074)
41 // bit 0 - busy / start
42 // bits 4:1 - blit mode
43 #define SV_BLITTER_CONTROL ((volatile long *)0x80010078)
44 // bits 9:0
45 #define SV_VERSION ((volatile long *)0x8001007C)
46 // bit 0 - empty (read only)
47 // bit 1 - full (read only)
48 // bits 31:0 - data (write only)
49 #define SV_BLITTER_FIFO ((volatile long *)0x80010080)
50 
51 #ifdef USE_SV_BLITTER
52 extern int g_superVidelFwVersion;
53 extern const byte *g_blitMask;
54 
55 void SyncSuperBlitter();
56 #endif // USE_SV_BLITTER
57 
58 void LockSuperBlitter();
59 void UnlockSuperBlitter();
60 
61 #else
62 
63 static inline void LockSuperBlitter() {}
64 static inline void UnlockSuperBlitter() {}
65 
66 #endif // USE_SUPERVIDEL
67 
68 extern bool g_hasSuperVidel;
69 
70 #endif // BACKENDS_GRAPHICS_ATARI_SUPERVIDEL_H