dingusppc/devices/video/atimach64gx.h
2022-05-21 14:51:27 +02:00

85 lines
2.5 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-22 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** ATI Mach64 GX definitions. */
#ifndef ATI_MACH64_GX_H
#define ATI_MACH64_GX_H
#include <devices/common/pci/pcidevice.h>
#include <devices/video/atimach64defs.h>
#include <devices/video/displayid.h>
#include <devices/video/videoctrl.h>
#include <cinttypes>
#include <memory>
class AtiMach64Gx : public PCIDevice, public VideoCtrlBase {
public:
AtiMach64Gx();
~AtiMach64Gx() = default;
/* PCI device methods */
bool supports_io_space(void) {
return true;
};
/* I/O space access methods */
bool pci_io_read(uint32_t offset, uint32_t size, uint32_t* res);
bool pci_io_write(uint32_t offset, uint32_t value, uint32_t size);
/* MMIODevice methods */
uint32_t read(uint32_t rgn_start, uint32_t offset, int size);
void write(uint32_t rgn_start, uint32_t offset, uint32_t value, int size);
protected:
void notify_bar_change(int bar_num);
uint32_t read_reg(uint32_t offset, uint32_t size);
void write_reg(uint32_t offset, uint32_t value, uint32_t size);
void enable_crtc_internal();
void disable_crtc_internal();
void rgb514_write_reg(uint8_t reg_addr, uint8_t value);
void rgb514_write_ind_reg(uint8_t reg_addr, uint8_t value);
private:
uint8_t mm_regs[2048] = { 0 }; // internal registers
int vram_size;
uint32_t aperture_base;
uint32_t config_cntl;
uint32_t mm_regs_offset;
int crtc_enable = 0;
// RGB514 RAMDAC state
uint8_t dac_idx_lo;
uint8_t dac_idx_hi;
uint8_t clut_index;
uint8_t comp_index;
uint8_t clut_color[3];
uint8_t dac_regs[256];
std::unique_ptr<DisplayID> disp_id;
std::unique_ptr<uint8_t[]> vram_ptr;
};
#endif /* ATI_MACH64_GX_H */