Started work on ATI Rage

devices/atirage.cpp

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+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 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/>.
+*/
+
+#include <atirage.h>
+#include <cstdint>
+#include "endianswap.h"
+
+ATIRage::ATIRage() {
+
+}
+
+uint32_t ATIRage::read() {
+
+}
+
+uint32_t ATIRage::write() {
+
+}
+
+void ATIRage::atirage_init() {
+
+}

devices/atirage.h

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+#ifndef ATIRAGE_H
+#define ATIRAGE_H
+#include <cinttypes>
+
+using namespace std;
+
+/** Mach registers offsets. */
+enum {
+    ATI_DSP_CONFIG = 0x0020, /*memory buffer registers*/
+    ATI_DSP_TOGGLE = 0x0024,
+    ATI_TIMER_CFG = 0x0028,
+    ATI_MEM_BUF_CNTL = 0x002C,
+    ATI_MEM_ADDR_CFG = 0x0034,
+    ATI_VGA_DSP_CFG = 0x004C,
+    ATI_VGA_DSP_TGL = 0x0050,
+    ATI_DSP2_CONFIG = 0x0054,
+    ATI_DSP2_TOGGLE = 0x0058,
+    ATI_EXT_MEM_CNTL = 0x00AC,
+    ATI_MEM_CNTL = 0x00B0,
+    ATI_VGA_WP_SEL = 0x00B4,
+    ATI_VGA_RP_SEL = 0x00B8,
+    ATI_I2C_CNTL_1 = 0x00BC,
+    ATI_DST_OFF_PITCH = 0x0100,
+    ATI_SRC_OFF_PITCH = 0x0180,
+    ATI_DP_PIX_WIDTH = 0x02D0,
+    ATI_DST_X_Y = 0x02E8,
+    ATI_DST_WIDTH_HEIGHT = 0x02EC,
+    ATI_CONTEXT_MASK = 0x0320,
+};
+
+class ATIRage
+{
+public:
+    ATIRage();
+    ~ATIRage() = default;
+
+    uint32_t read(int reg, int size);
+    void write(int reg, uint32_t value, int size);
+
+private:
+    uint32_t atirage_membuf_regs[9];    /* ATI Rage Memory Buffer Registers */
+    uint32_t atirage_scratch_regs[4];   /* ATI Rage Scratch Registers */
+    uint32_t atirage_cmdfifo_regs[3];   /* ATI Rage Command FIFO Registers */
+    uint32_t atirage_datapath_regs[12]; /* ATI Rage Data Path Registers*/
+
+    uint8_t atirage_vid_mem[8242880];
+
+    uint8_t atirage_cfg[256] = {
+        0x02, 0x10, //Vendor: ATI Technologies
+        0x50, 0x47, //Device: 3D Rage Pro PCI
+
+    };
+
+    void atirage_init();
+};
+#endif /* ATIRAGE_H */