mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-06-02 13:41:37 +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>
672 lines
16 KiB
C++
672 lines
16 KiB
C++
/*
|
|
* UAE - The Un*x Amiga Emulator
|
|
*
|
|
* Memory management
|
|
*
|
|
* (c) 1995 Bernd Schmidt
|
|
*
|
|
* 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 2 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "sysdeps.h"
|
|
|
|
#include "cpu_emulation.h"
|
|
#include "main.h"
|
|
#include "video.h"
|
|
|
|
#include "m68k.h"
|
|
#include "memory.h"
|
|
#include "readcpu.h"
|
|
#include "newcpu.h"
|
|
|
|
#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
|
|
|
|
static bool illegal_mem = false;
|
|
|
|
#ifdef SAVE_MEMORY_BANKS
|
|
addrbank *mem_banks[65536];
|
|
#else
|
|
addrbank mem_banks[65536];
|
|
#endif
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
# define swap_words(X) (X)
|
|
#else
|
|
# define swap_words(X) (((X) >> 16) | ((X) << 16))
|
|
#endif
|
|
|
|
#ifdef NO_INLINE_MEMORY_ACCESS
|
|
uae_u32 longget (uaecptr addr)
|
|
{
|
|
return call_mem_get_func (get_mem_bank (addr).lget, addr);
|
|
}
|
|
uae_u32 wordget (uaecptr addr)
|
|
{
|
|
return call_mem_get_func (get_mem_bank (addr).wget, addr);
|
|
}
|
|
uae_u32 byteget (uaecptr addr)
|
|
{
|
|
return call_mem_get_func (get_mem_bank (addr).bget, addr);
|
|
}
|
|
void longput (uaecptr addr, uae_u32 l)
|
|
{
|
|
call_mem_put_func (get_mem_bank (addr).lput, addr, l);
|
|
}
|
|
void wordput (uaecptr addr, uae_u32 w)
|
|
{
|
|
call_mem_put_func (get_mem_bank (addr).wput, addr, w);
|
|
}
|
|
void byteput (uaecptr addr, uae_u32 b)
|
|
{
|
|
call_mem_put_func (get_mem_bank (addr).bput, addr, b);
|
|
}
|
|
#endif
|
|
|
|
/* A dummy bank that only contains zeros */
|
|
|
|
static uae_u32 REGPARAM2 dummy_lget (uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 dummy_wget (uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 dummy_bget (uaecptr) REGPARAM;
|
|
static void REGPARAM2 dummy_lput (uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 dummy_wput (uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 dummy_bput (uaecptr, uae_u32) REGPARAM;
|
|
|
|
uae_u32 REGPARAM2 dummy_lget (uaecptr addr)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal lget at %08x\n", addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
uae_u32 REGPARAM2 dummy_wget (uaecptr addr)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal wget at %08x\n", addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
uae_u32 REGPARAM2 dummy_bget (uaecptr addr)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal bget at %08x\n", addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void REGPARAM2 dummy_lput (uaecptr addr, uae_u32 l)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal lput at %08x\n", addr);
|
|
}
|
|
void REGPARAM2 dummy_wput (uaecptr addr, uae_u32 w)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal wput at %08x\n", addr);
|
|
}
|
|
void REGPARAM2 dummy_bput (uaecptr addr, uae_u32 b)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal bput at %08x\n", addr);
|
|
}
|
|
|
|
/* Mac RAM (32 bit addressing) */
|
|
|
|
static uae_u32 REGPARAM2 ram_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 ram_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 ram_bget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 ram_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 ram_wput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 ram_bput(uaecptr, uae_u32) REGPARAM;
|
|
static uae_u8 *REGPARAM2 ram_xlate(uaecptr addr) REGPARAM;
|
|
|
|
static uintptr RAMBaseDiff; // RAMBaseHost - RAMBaseMac
|
|
|
|
uae_u32 REGPARAM2 ram_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(RAMBaseDiff + addr);
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 ram_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(RAMBaseDiff + addr);
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 ram_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(RAMBaseDiff + addr);
|
|
}
|
|
|
|
void REGPARAM2 ram_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(RAMBaseDiff + addr);
|
|
do_put_mem_long(m, l);
|
|
}
|
|
|
|
void REGPARAM2 ram_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(RAMBaseDiff + addr);
|
|
do_put_mem_word(m, w);
|
|
}
|
|
|
|
void REGPARAM2 ram_bput(uaecptr addr, uae_u32 b)
|
|
{
|
|
*(uae_u8 *)(RAMBaseDiff + addr) = b;
|
|
}
|
|
|
|
uae_u8 *REGPARAM2 ram_xlate(uaecptr addr)
|
|
{
|
|
return (uae_u8 *)(RAMBaseDiff + addr);
|
|
}
|
|
|
|
/* Mac RAM (24 bit addressing) */
|
|
|
|
static uae_u32 REGPARAM2 ram24_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 ram24_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 ram24_bget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 ram24_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 ram24_wput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 ram24_bput(uaecptr, uae_u32) REGPARAM;
|
|
static uae_u8 *REGPARAM2 ram24_xlate(uaecptr addr) REGPARAM;
|
|
|
|
uae_u32 REGPARAM2 ram24_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 ram24_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 ram24_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
}
|
|
|
|
void REGPARAM2 ram24_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
do_put_mem_long(m, l);
|
|
}
|
|
|
|
void REGPARAM2 ram24_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
do_put_mem_word(m, w);
|
|
}
|
|
|
|
void REGPARAM2 ram24_bput(uaecptr addr, uae_u32 b)
|
|
{
|
|
*(uae_u8 *)(RAMBaseDiff + (addr & 0xffffff)) = b;
|
|
}
|
|
|
|
uae_u8 *REGPARAM2 ram24_xlate(uaecptr addr)
|
|
{
|
|
return (uae_u8 *)(RAMBaseDiff + (addr & 0xffffff));
|
|
}
|
|
|
|
/* Mac ROM (32 bit addressing) */
|
|
|
|
static uae_u32 REGPARAM2 rom_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 rom_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 rom_bget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 rom_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 rom_wput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 rom_bput(uaecptr, uae_u32) REGPARAM;
|
|
static uae_u8 *REGPARAM2 rom_xlate(uaecptr addr) REGPARAM;
|
|
|
|
static uintptr ROMBaseDiff; // ROMBaseHost - ROMBaseMac
|
|
|
|
uae_u32 REGPARAM2 rom_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(ROMBaseDiff + addr);
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 rom_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(ROMBaseDiff + addr);
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 rom_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(ROMBaseDiff + addr);
|
|
}
|
|
|
|
void REGPARAM2 rom_lput(uaecptr addr, uae_u32 b)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal ROM lput at %08x\n", addr);
|
|
}
|
|
|
|
void REGPARAM2 rom_wput(uaecptr addr, uae_u32 b)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal ROM wput at %08x\n", addr);
|
|
}
|
|
|
|
void REGPARAM2 rom_bput(uaecptr addr, uae_u32 b)
|
|
{
|
|
if (illegal_mem)
|
|
write_log ("Illegal ROM bput at %08x\n", addr);
|
|
}
|
|
|
|
uae_u8 *REGPARAM2 rom_xlate(uaecptr addr)
|
|
{
|
|
return (uae_u8 *)(ROMBaseDiff + addr);
|
|
}
|
|
|
|
/* Mac ROM (24 bit addressing) */
|
|
|
|
static uae_u32 REGPARAM2 rom24_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 rom24_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 rom24_bget(uaecptr) REGPARAM;
|
|
static uae_u8 *REGPARAM2 rom24_xlate(uaecptr addr) REGPARAM;
|
|
|
|
uae_u32 REGPARAM2 rom24_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(ROMBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 rom24_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(ROMBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 rom24_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(ROMBaseDiff + (addr & 0xffffff));
|
|
}
|
|
|
|
uae_u8 *REGPARAM2 rom24_xlate(uaecptr addr)
|
|
{
|
|
return (uae_u8 *)(ROMBaseDiff + (addr & 0xffffff));
|
|
}
|
|
|
|
/* Frame buffer */
|
|
|
|
static uae_u32 REGPARAM2 frame_direct_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame_direct_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame_direct_bget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 frame_direct_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame_direct_wput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame_direct_bput(uaecptr, uae_u32) REGPARAM;
|
|
|
|
static uae_u32 REGPARAM2 frame_host_555_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame_host_555_wget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 frame_host_555_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame_host_555_wput(uaecptr, uae_u32) REGPARAM;
|
|
|
|
static uae_u32 REGPARAM2 frame_host_565_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame_host_565_wget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 frame_host_565_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame_host_565_wput(uaecptr, uae_u32) REGPARAM;
|
|
|
|
static uae_u32 REGPARAM2 frame_host_888_lget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 frame_host_888_lput(uaecptr, uae_u32) REGPARAM;
|
|
|
|
static uae_u8 *REGPARAM2 frame_xlate(uaecptr addr) REGPARAM;
|
|
|
|
static uintptr FrameBaseDiff; // MacFrameBaseHost - MacFrameBaseMac
|
|
|
|
uae_u32 REGPARAM2 frame_direct_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_direct_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_direct_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(FrameBaseDiff + addr);
|
|
}
|
|
|
|
void REGPARAM2 frame_direct_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
do_put_mem_long(m, l);
|
|
}
|
|
|
|
void REGPARAM2 frame_direct_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
do_put_mem_word(m, w);
|
|
}
|
|
|
|
void REGPARAM2 frame_direct_bput(uaecptr addr, uae_u32 b)
|
|
{
|
|
*(uae_u8 *)(FrameBaseDiff + addr) = b;
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_host_555_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m, l;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
l = *m;
|
|
return swap_words(l);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_host_555_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
return *m;
|
|
}
|
|
|
|
void REGPARAM2 frame_host_555_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
*m = swap_words(l);
|
|
}
|
|
|
|
void REGPARAM2 frame_host_555_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
*m = w;
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_host_565_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m, l;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
l = *m;
|
|
l = (l & 0x001f001f) | ((l >> 1) & 0x7fe07fe0);
|
|
return swap_words(l);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_host_565_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m, w;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
w = *m;
|
|
return (w & 0x1f) | ((w >> 1) & 0x7fe0);
|
|
}
|
|
|
|
void REGPARAM2 frame_host_565_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
l = (l & 0x001f001f) | ((l << 1) & 0xffc0ffc0);
|
|
*m = swap_words(l);
|
|
}
|
|
|
|
void REGPARAM2 frame_host_565_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + addr);
|
|
*m = (w & 0x1f) | ((w << 1) & 0xffc0);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame_host_888_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m, l;
|
|
m = (uae_u32 *)(FrameBaseDiff + addr);
|
|
return *m;
|
|
}
|
|
|
|
void REGPARAM2 frame_host_888_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(MacFrameBaseHost + addr - MacFrameBaseMac);
|
|
*m = l;
|
|
}
|
|
|
|
uae_u8 *REGPARAM2 frame_xlate(uaecptr addr)
|
|
{
|
|
return (uae_u8 *)(FrameBaseDiff + addr);
|
|
}
|
|
|
|
/* Mac framebuffer RAM (24 bit addressing) */
|
|
static uae_u32 REGPARAM2 frame24_lget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame24_wget(uaecptr) REGPARAM;
|
|
static uae_u32 REGPARAM2 frame24_bget(uaecptr) REGPARAM;
|
|
static void REGPARAM2 frame24_lput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame24_wput(uaecptr, uae_u32) REGPARAM;
|
|
static void REGPARAM2 frame24_bput(uaecptr, uae_u32) REGPARAM;
|
|
|
|
/*
|
|
* Q: Why the magic number 0xa700 and 0xfc80?
|
|
*
|
|
* A: The M68K CPU used by the earlier Macintosh models such as
|
|
* Macintosh 128K or Macintosh SE, its address space is limited
|
|
* to 2^24 = 16MiB. The RAM limits to 4MiB.
|
|
*
|
|
* With 512x342 1 bit per pixel screen, the size of the frame buffer
|
|
* is 0x5580 bytes.
|
|
*
|
|
* In Macintosh 128K [1], the frame buffer address is mapped from
|
|
* 0x1A700 to 0x1FC7F.
|
|
*
|
|
* In Macintosh SE [2], the frame buffer address is mapped from
|
|
* 0x3FA700 to 0x3FFC7F.
|
|
*
|
|
* The frame24_xxx memory banks mapping used the magic number to
|
|
* retrieve the offset. The memory write operation does twice:
|
|
* one for the guest OS and another for the host OS (the write operation
|
|
* above MacFrameBaseHost).
|
|
*
|
|
*
|
|
* See:
|
|
* [1] The Apple Macintosh Computer. http://www.1000bit.it/support/articoli/apple/mac128.pdf
|
|
* [2] Capturing Mac SE's video from PDS. http://synack.net/~bbraun/sevideo/
|
|
*
|
|
*/
|
|
|
|
uae_u32 REGPARAM2 frame24_lget(uaecptr addr)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_long(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame24_wget(uaecptr addr)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + (addr & 0xffffff));
|
|
return do_get_mem_word(m);
|
|
}
|
|
|
|
uae_u32 REGPARAM2 frame24_bget(uaecptr addr)
|
|
{
|
|
return (uae_u32)*(uae_u8 *)(FrameBaseDiff + (addr & 0xffffff));
|
|
}
|
|
|
|
void REGPARAM2 frame24_lput(uaecptr addr, uae_u32 l)
|
|
{
|
|
uae_u32 *m;
|
|
m = (uae_u32 *)(FrameBaseDiff + (addr & 0xffffffff));
|
|
do_put_mem_long(m, l);
|
|
}
|
|
|
|
void REGPARAM2 frame24_wput(uaecptr addr, uae_u32 w)
|
|
{
|
|
uae_u16 *m;
|
|
m = (uae_u16 *)(FrameBaseDiff + (addr & 0xffffffff));
|
|
do_put_mem_word(m, w);
|
|
}
|
|
|
|
void REGPARAM2 frame24_bput(uaecptr addr, uae_u32 b)
|
|
{
|
|
*(uae_u8 *)(FrameBaseDiff + (addr & 0xffffffff)) = b;
|
|
}
|
|
|
|
/* Default memory access functions */
|
|
|
|
uae_u8 *REGPARAM2 default_xlate (uaecptr a)
|
|
{
|
|
write_log("Your Mac program just did something terribly stupid\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* Address banks */
|
|
|
|
addrbank dummy_bank = {
|
|
dummy_lget, dummy_wget, dummy_bget,
|
|
dummy_lput, dummy_wput, dummy_bput,
|
|
default_xlate
|
|
};
|
|
|
|
addrbank ram_bank = {
|
|
ram_lget, ram_wget, ram_bget,
|
|
ram_lput, ram_wput, ram_bput,
|
|
ram_xlate
|
|
};
|
|
|
|
addrbank ram24_bank = {
|
|
ram24_lget, ram24_wget, ram24_bget,
|
|
ram24_lput, ram24_wput, ram24_bput,
|
|
ram24_xlate
|
|
};
|
|
|
|
addrbank rom_bank = {
|
|
rom_lget, rom_wget, rom_bget,
|
|
rom_lput, rom_wput, rom_bput,
|
|
rom_xlate
|
|
};
|
|
|
|
addrbank rom24_bank = {
|
|
rom24_lget, rom24_wget, rom24_bget,
|
|
rom_lput, rom_wput, rom_bput,
|
|
rom24_xlate
|
|
};
|
|
|
|
addrbank frame_direct_bank = {
|
|
frame_direct_lget, frame_direct_wget, frame_direct_bget,
|
|
frame_direct_lput, frame_direct_wput, frame_direct_bput,
|
|
frame_xlate
|
|
};
|
|
|
|
addrbank frame_host_555_bank = {
|
|
frame_host_555_lget, frame_host_555_wget, frame_direct_bget,
|
|
frame_host_555_lput, frame_host_555_wput, frame_direct_bput,
|
|
frame_xlate
|
|
};
|
|
|
|
addrbank frame_host_565_bank = {
|
|
frame_host_565_lget, frame_host_565_wget, frame_direct_bget,
|
|
frame_host_565_lput, frame_host_565_wput, frame_direct_bput,
|
|
frame_xlate
|
|
};
|
|
|
|
addrbank frame_host_888_bank = {
|
|
frame_host_888_lget, frame_direct_wget, frame_direct_bget,
|
|
frame_host_888_lput, frame_direct_wput, frame_direct_bput,
|
|
frame_xlate
|
|
};
|
|
|
|
addrbank frame24_bank = {
|
|
frame24_lget, frame24_wget, frame24_bget,
|
|
frame24_lput, frame24_wput, frame24_bput,
|
|
default_xlate
|
|
};
|
|
|
|
void memory_init(void)
|
|
{
|
|
for(long i=0; i<65536; i++)
|
|
put_mem_bank(i<<16, &dummy_bank);
|
|
|
|
// Limit RAM size to not overlap ROM
|
|
uint32 ram_size = RAMSize > ROMBaseMac ? ROMBaseMac : RAMSize;
|
|
|
|
RAMBaseDiff = (uintptr)RAMBaseHost - (uintptr)RAMBaseMac;
|
|
ROMBaseDiff = (uintptr)ROMBaseHost - (uintptr)ROMBaseMac;
|
|
if (TwentyFourBitAddressing)
|
|
FrameBaseDiff = (uintptr)MacFrameBaseHost - (uintptr)MacFrameBaseMac24Bit;
|
|
else
|
|
FrameBaseDiff = (uintptr)MacFrameBaseHost - (uintptr)MacFrameBaseMac;
|
|
|
|
// Map RAM, ROM and display
|
|
if (TwentyFourBitAddressing) {
|
|
map_banks(&ram24_bank, RAMBaseMac >> 16, ram_size >> 16);
|
|
map_banks(&rom24_bank, ROMBaseMac >> 16, ROMSize >> 16);
|
|
|
|
// Map frame buffer at end of RAM.
|
|
map_banks(&frame24_bank, MacFrameBaseMac24Bit >> 16, (MacFrameSize >> 16) + 1);
|
|
} else {
|
|
map_banks(&ram_bank, RAMBaseMac >> 16, ram_size >> 16);
|
|
map_banks(&rom_bank, ROMBaseMac >> 16, ROMSize >> 16);
|
|
|
|
// Map frame buffer
|
|
switch (MacFrameLayout) {
|
|
case FLAYOUT_DIRECT:
|
|
map_banks(&frame_direct_bank, MacFrameBaseMac >> 16, (MacFrameSize >> 16) + 1);
|
|
break;
|
|
case FLAYOUT_HOST_555:
|
|
map_banks(&frame_host_555_bank, MacFrameBaseMac >> 16, (MacFrameSize >> 16) + 1);
|
|
break;
|
|
case FLAYOUT_HOST_565:
|
|
map_banks(&frame_host_565_bank, MacFrameBaseMac >> 16, (MacFrameSize >> 16) + 1);
|
|
break;
|
|
case FLAYOUT_HOST_888:
|
|
map_banks(&frame_host_888_bank, MacFrameBaseMac >> 16, (MacFrameSize >> 16) + 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void map_banks(addrbank *bank, int start, int size)
|
|
{
|
|
int bnr;
|
|
unsigned long int hioffs = 0, endhioffs = 0x100;
|
|
|
|
if (start >= 0x100) {
|
|
for (bnr = start; bnr < start + size; bnr++)
|
|
put_mem_bank (bnr << 16, bank);
|
|
return;
|
|
}
|
|
if (TwentyFourBitAddressing) endhioffs = 0x10000;
|
|
for (hioffs = 0; hioffs < endhioffs; hioffs += 0x100)
|
|
for (bnr = start; bnr < start+size; bnr++)
|
|
put_mem_bank((bnr + hioffs) << 16, bank);
|
|
}
|
|
|
|
#endif /* !REAL_ADDRESSING && !DIRECT_ADDRESSING */
|
|
|