mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-06-09 16:29:30 +00:00
342fbbce34
- Added Mac SE 24 bit ROM screen patch from mini vMac. The guest OS resolution in System 6 can be defined at an arbitrary combination. - Mac frame buffer base mapping is moved out from guest RAM. This creates more leg room for the host frame buffer. - Enable System 6 vscreen support in SDL2. Passed build and test. - Enable System 6 vscreen support in SDL1. Passed build and test. - Eanble System 6 vscreen support in XWidnow. Passed build and test. See my [screen cast demo here](https://youtu.be/aXzM8t_u3zI) Signed-off-by: Ricky Zhang <rickyzhang@gmail.com>
107 lines
4.3 KiB
C
107 lines
4.3 KiB
C
/*
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* cpu_emulation.h - Definitions for Basilisk II CPU emulation module (UAE 0.8.10 version)
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef CPU_EMULATION_H
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#define CPU_EMULATION_H
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#include <string.h>
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/*
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* Memory system
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*/
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// RAM and ROM pointers (allocated and set by main_*.cpp)
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extern uint32 RAMBaseMac; // RAM base (Mac address space), does not include Low Mem when != 0
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extern uint8 *RAMBaseHost; // RAM base (host address space)
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extern uint32 RAMSize; // Size of RAM
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extern uint32 ROMBaseMac; // ROM base (Mac address space)
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extern uint8 *ROMBaseHost; // ROM base (host address space)
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extern uint32 ROMSize; // Size of ROM
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// For 24 Bit ROM, we maps the guest OS frame buffer address above 4MiB RAM
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// and ROM but less than 16 MiB.
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const uint32 MacFrameBaseMac24Bit = 0x00500000;
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#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
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// If we are not using real or direct addressing, the Mac frame buffer gets
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// mapped to this location. The memory must be allocated by VideoInit().
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// If multiple monitors are used, they must share the frame buffer
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const uint32 MacFrameBaseMac = 0xa0000000;
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extern uint8 *MacFrameBaseHost; // Frame buffer base (host address space)
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extern uint32 MacFrameSize; // Size of frame buffer
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#endif
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extern int MacFrameLayout; // Frame buffer layout (see defines below)
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// Possible frame buffer layouts
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enum {
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FLAYOUT_NONE, // No frame buffer
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FLAYOUT_DIRECT, // Frame buffer is in MacOS layout, no conversion needed
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FLAYOUT_HOST_555, // 16 bit, RGB 555, host byte order
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FLAYOUT_HOST_565, // 16 bit, RGB 565, host byte order
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FLAYOUT_HOST_888 // 32 bit, RGB 888, host byte order
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};
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// Mac memory access functions
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#include "memory.h"
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static inline uint32 ReadMacInt32(uint32 addr) {return get_long(addr);}
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static inline uint32 ReadMacInt16(uint32 addr) {return get_word(addr);}
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static inline uint32 ReadMacInt8(uint32 addr) {return get_byte(addr);}
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static inline void WriteMacInt32(uint32 addr, uint32 l) {put_long(addr, l);}
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static inline void WriteMacInt16(uint32 addr, uint32 w) {put_word(addr, w);}
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static inline void WriteMacInt8(uint32 addr, uint32 b) {put_byte(addr, b);}
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static inline uint8 *Mac2HostAddr(uint32 addr) {return get_real_address(addr);}
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static inline uint32 Host2MacAddr(uint8 *addr) {return get_virtual_address(addr);}
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static inline void *Mac_memset(uint32 addr, int c, size_t n) {return memset(Mac2HostAddr(addr), c, n);}
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static inline void *Mac2Host_memcpy(void *dest, uint32 src, size_t n) {return memcpy(dest, Mac2HostAddr(src), n);}
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static inline void *Host2Mac_memcpy(uint32 dest, const void *src, size_t n) {return memcpy(Mac2HostAddr(dest), src, n);}
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static inline void *Mac2Mac_memcpy(uint32 dest, uint32 src, size_t n) {return memcpy(Mac2HostAddr(dest), Mac2HostAddr(src), n);}
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/*
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* 680x0 emulation
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*/
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// Initialization
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extern bool Init680x0(void); // This routine may want to look at CPUType/FPUType to set up the apropriate emulation
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extern void Exit680x0(void);
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extern void InitFrameBufferMapping(void);
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// 680x0 dynamic recompilation activation flag
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#if USE_JIT
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extern bool UseJIT;
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#else
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const bool UseJIT = false;
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#endif
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// 680x0 emulation functions
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struct M68kRegisters;
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extern void Start680x0(void); // Reset and start 680x0
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extern "C" void Execute68k(uint32 addr, M68kRegisters *r); // Execute 68k code from EMUL_OP routine
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extern "C" void Execute68kTrap(uint16 trap, M68kRegisters *r); // Execute MacOS 68k trap from EMUL_OP routine
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// Interrupt functions
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extern void TriggerInterrupt(void); // Trigger interrupt level 1 (InterruptFlag must be set first)
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extern void TriggerNMI(void); // Trigger interrupt level 7
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#endif
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