1 /* Pcsx - Pc Psx Emulator
2 * Copyright (C) 1999-2016 Pcsx Team
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses>.
19 * q: Why bother with GPU stuff in a plugin-based emu core?
20 * a: mostly because of busy bits, we have all the needed timing info
21 * that GPU plugin doesn't.
27 #define PSXGPU_LCF (1u<<31)
28 #define PSXGPU_nBUSY (1u<<26)
29 #define PSXGPU_ILACE (1u<<22)
30 #define PSXGPU_DHEIGHT (1u<<19)
31 #define PSXGPU_FIELD (1u<<13)
33 // both must be set for interlace to work
34 #define PSXGPU_ILACE_BITS (PSXGPU_ILACE | PSXGPU_DHEIGHT | PSXGPU_FIELD)
36 #define HW_GPU_STATUS psxHu32ref(0x1814)
38 // TODO: handle com too
39 #define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY | PSXGPU_FIELD)
41 #define gpuSyncPluginSR() { \
42 HW_GPU_STATUS &= SWAP32(PSXGPU_TIMING_BITS); \
43 HW_GPU_STATUS |= SWAP32(GPU_readStatus() & ~PSXGPU_TIMING_BITS); \
46 #endif /* __GPU_H__ */