/*
  * UAE - The Un*x Amiga Emulator
  *
  * Memory management
  *
  * (c) 1995 Bernd Schmidt
  */

#include "sysconfig.h"
#include "sysdeps.h"

#include "config.h"
#include "options.h"
#include "uae.h"
#include "memory.h"
#include "ersatz.h"
#include "zfile.h"

#ifdef USE_MAPPED_MEMORY
#include <sys/mman.h>
#endif

int ersatzkickfile = 0;

#ifdef SAVE_MEMORY_BANKS
addrbank *mem_banks[65536];
#else
addrbank mem_banks[65536];
#endif

#ifdef NO_INLINE_MEMORY_ACCESS
__inline__ uae_u32 longget(uaecptr addr)
{
    return call_mem_get_func(get_mem_bank(addr).lget, addr);
}
__inline__ uae_u32 wordget(uaecptr addr)
{
    return call_mem_get_func(get_mem_bank(addr).wget, addr);
}
__inline__ uae_u32 byteget(uaecptr addr)
{
    return call_mem_get_func(get_mem_bank(addr).bget, addr);
}
__inline__ void longput(uaecptr addr, uae_u32 l)
{
    call_mem_put_func(get_mem_bank(addr).lput, addr, l);
}
__inline__ void wordput(uaecptr addr, uae_u32 w)
{
    call_mem_put_func(get_mem_bank(addr).wput, addr, w);
}
__inline__ void byteput(uaecptr addr, uae_u32 b)
{
    call_mem_put_func(get_mem_bank(addr).bput, addr, b);
}
#endif

uae_u32 chipmem_mask, kickmem_mask, bogomem_mask, a3000mem_mask;

/* A dummy bank that only contains zeros */

static uae_u32 dummy_lget(uaecptr) REGPARAM;
static uae_u32 dummy_wget(uaecptr) REGPARAM;
static uae_u32 dummy_bget(uaecptr) REGPARAM;
static void  dummy_lput(uaecptr, uae_u32) REGPARAM;
static void  dummy_wput(uaecptr, uae_u32) REGPARAM;
static void  dummy_bput(uaecptr, uae_u32) REGPARAM;
static int   dummy_check(uaecptr addr, uae_u32 size) REGPARAM;

uae_u32 REGPARAM2 dummy_lget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal lget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

uae_u32 REGPARAM2 dummy_wget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal wget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

uae_u32 REGPARAM2 dummy_bget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal bget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

void REGPARAM2 dummy_lput(uaecptr addr, uae_u32 l)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal lput at %08lx\n", addr);
	write_log (warning_buffer);
    }
}
void REGPARAM2 dummy_wput(uaecptr addr, uae_u32 w)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal wput at %08lx\n", addr);
	write_log (warning_buffer);
    }
}
void REGPARAM2 dummy_bput(uaecptr addr, uae_u32 b)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal bput at %08lx\n", addr);
	write_log (warning_buffer);
    }
}

int REGPARAM2 dummy_check(uaecptr addr, uae_u32 size)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal check at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

/* A3000 "motherboard resources" bank.  */
static uae_u32 mbres_lget(uaecptr) REGPARAM;
static uae_u32 mbres_wget(uaecptr) REGPARAM;
static uae_u32 mbres_bget(uaecptr) REGPARAM;
static void  mbres_lput(uaecptr, uae_u32) REGPARAM;
static void  mbres_wput(uaecptr, uae_u32) REGPARAM;
static void  mbres_bput(uaecptr, uae_u32) REGPARAM;
static int   mbres_check(uaecptr addr, uae_u32 size) REGPARAM;

static int mbres_val = 0;

uae_u32 REGPARAM2 mbres_lget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal lget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

uae_u32 REGPARAM2 mbres_wget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal wget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

uae_u32 REGPARAM2 mbres_bget(uaecptr addr)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal bget at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return (addr & 0xFFFF) == 3 ? mbres_val : 0;
}

void REGPARAM2 mbres_lput(uaecptr addr, uae_u32 l)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal lput at %08lx\n", addr);
	write_log (warning_buffer);
    }
}
void REGPARAM2 mbres_wput(uaecptr addr, uae_u32 w)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal wput at %08lx\n", addr);
	write_log (warning_buffer);
    }
}
void REGPARAM2 mbres_bput(uaecptr addr, uae_u32 b)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal bput at %08lx\n", addr);
	write_log (warning_buffer);
    }
    if ((addr & 0xFFFF) == 3)
	mbres_val = b;
}

int REGPARAM2 mbres_check(uaecptr addr, uae_u32 size)
{
    if (currprefs.illegal_mem) {
	sprintf (warning_buffer, "Illegal check at %08lx\n", addr);
	write_log (warning_buffer);
    }
    return 0;
}

/* Chip memory */

uae_u8 *chipmemory;

static uae_u32 chipmem_lget(uaecptr) REGPARAM;
static uae_u32 chipmem_wget(uaecptr) REGPARAM;
static uae_u32 chipmem_bget(uaecptr) REGPARAM;
static void  chipmem_lput(uaecptr, uae_u32) REGPARAM;
static void  chipmem_wput(uaecptr, uae_u32) REGPARAM;
static void  chipmem_bput(uaecptr, uae_u32) REGPARAM;

static int   chipmem_check(uaecptr addr, uae_u32 size) REGPARAM;
static uae_u8 *chipmem_xlate(uaecptr addr) REGPARAM;

uae_u32 REGPARAM2 chipmem_lget(uaecptr addr)
{
    uae_u32 *m;
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    m = (uae_u32 *)(chipmemory + addr);
    return do_get_mem_long(m);
}

uae_u32 REGPARAM2 chipmem_wget(uaecptr addr)
{
    uae_u16 *m;
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    m = (uae_u16 *)(chipmemory + addr);
    return do_get_mem_word(m);
}

uae_u32 REGPARAM2 chipmem_bget(uaecptr addr)
{
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    return chipmemory[addr];
}

void REGPARAM2 chipmem_lput(uaecptr addr, uae_u32 l)
{
    uae_u32 *m;
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    m = (uae_u32 *)(chipmemory + addr);
    do_put_mem_long(m, l);
}

void REGPARAM2 chipmem_wput(uaecptr addr, uae_u32 w)
{
    uae_u16 *m;
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    m = (uae_u16 *)(chipmemory + addr);
    do_put_mem_word(m, w);
}

void REGPARAM2 chipmem_bput(uaecptr addr, uae_u32 b)
{
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    chipmemory[addr] = b;
}

int REGPARAM2 chipmem_check(uaecptr addr, uae_u32 size)
{
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    return (addr + size) < chipmem_size;
}

uae_u8 REGPARAM2 *chipmem_xlate(uaecptr addr)
{
    addr -= chipmem_start & chipmem_mask;
    addr &= chipmem_mask;
    return chipmemory + addr;
}

/* Slow memory */

static uae_u8 *bogomemory;

static uae_u32 bogomem_lget(uaecptr) REGPARAM;
static uae_u32 bogomem_wget(uaecptr) REGPARAM;
static uae_u32 bogomem_bget(uaecptr) REGPARAM;
static void  bogomem_lput(uaecptr, uae_u32) REGPARAM;
static void  bogomem_wput(uaecptr, uae_u32) REGPARAM;
static void  bogomem_bput(uaecptr, uae_u32) REGPARAM;
static int  bogomem_check(uaecptr addr, uae_u32 size) REGPARAM;
static uae_u8 *bogomem_xlate(uaecptr addr) REGPARAM;

uae_u32 REGPARAM2 bogomem_lget(uaecptr addr)
{
    uae_u32 *m;
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    m = (uae_u32 *)(bogomemory + addr);
    return do_get_mem_long(m);
}

uae_u32 REGPARAM2 bogomem_wget(uaecptr addr)
{
    uae_u16 *m;
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    m = (uae_u16 *)(bogomemory + addr);
    return do_get_mem_word(m);
}

uae_u32 REGPARAM2 bogomem_bget(uaecptr addr)
{
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    return bogomemory[addr];
}

void REGPARAM2 bogomem_lput(uaecptr addr, uae_u32 l)
{
    uae_u32 *m;
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    m = (uae_u32 *)(bogomemory + addr);
    do_put_mem_long(m, l);
}

void REGPARAM2 bogomem_wput(uaecptr addr, uae_u32 w)
{
    uae_u16 *m;
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    m = (uae_u16 *)(bogomemory + addr);
    do_put_mem_word(m, w);
}

void REGPARAM2 bogomem_bput(uaecptr addr, uae_u32 b)
{
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    bogomemory[addr] = b;
}

int REGPARAM2 bogomem_check(uaecptr addr, uae_u32 size)
{
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    return (addr + size) < bogomem_size;
}

uae_u8 REGPARAM2 *bogomem_xlate(uaecptr addr)
{
    addr -= bogomem_start & bogomem_mask;
    addr &= bogomem_mask;
    return bogomemory + addr;
}

/* A3000 motherboard fast memory */

static uae_u8 *a3000memory;

static uae_u32 a3000mem_lget(uaecptr) REGPARAM;
static uae_u32 a3000mem_wget(uaecptr) REGPARAM;
static uae_u32 a3000mem_bget(uaecptr) REGPARAM;
static void  a3000mem_lput(uaecptr, uae_u32) REGPARAM;
static void  a3000mem_wput(uaecptr, uae_u32) REGPARAM;
static void  a3000mem_bput(uaecptr, uae_u32) REGPARAM;
static int  a3000mem_check(uaecptr addr, uae_u32 size) REGPARAM;
static uae_u8 *a3000mem_xlate(uaecptr addr) REGPARAM;

uae_u32 REGPARAM2 a3000mem_lget(uaecptr addr)
{
    uae_u32 *m;
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    m = (uae_u32 *)(a3000memory + addr);
    return do_get_mem_long(m);
}

uae_u32 REGPARAM2 a3000mem_wget(uaecptr addr)
{
    uae_u16 *m;
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    m = (uae_u16 *)(a3000memory + addr);
    return do_get_mem_word(m);
}

uae_u32 REGPARAM2 a3000mem_bget(uaecptr addr)
{
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    return a3000memory[addr];
}

void REGPARAM2 a3000mem_lput(uaecptr addr, uae_u32 l)
{
    uae_u32 *m;
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    m = (uae_u32 *)(a3000memory + addr);
    do_put_mem_long(m, l);
}

void REGPARAM2 a3000mem_wput(uaecptr addr, uae_u32 w)
{
    uae_u16 *m;
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    m = (uae_u16 *)(a3000memory + addr);
    do_put_mem_word(m, w);
}

void REGPARAM2 a3000mem_bput(uaecptr addr, uae_u32 b)
{
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    a3000memory[addr] = b;
}

int REGPARAM2 a3000mem_check(uaecptr addr, uae_u32 size)
{
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    return (addr + size) < a3000mem_size;
}

uae_u8 REGPARAM2 *a3000mem_xlate(uaecptr addr)
{
    addr -= a3000mem_start & a3000mem_mask;
    addr &= a3000mem_mask;
    return a3000memory + addr;
}

/* Kick memory */

uae_u8 *kickmemory;

static uae_u32 kickmem_lget(uaecptr) REGPARAM;
static uae_u32 kickmem_wget(uaecptr) REGPARAM;
static uae_u32 kickmem_bget(uaecptr) REGPARAM;
static void  kickmem_lput(uaecptr, uae_u32) REGPARAM;
static void  kickmem_wput(uaecptr, uae_u32) REGPARAM;
static void  kickmem_bput(uaecptr, uae_u32) REGPARAM;
static int  kickmem_check(uaecptr addr, uae_u32 size) REGPARAM;
static uae_u8 *kickmem_xlate(uaecptr addr) REGPARAM;

uae_u32 REGPARAM2 kickmem_lget(uaecptr addr)
{
    uae_u32 *m;
    addr -= kickmem_start & kickmem_mask;
    addr &= kickmem_mask;
    m = (uae_u32 *)(kickmemory + addr);
    return do_get_mem_long(m);
}

uae_u32 REGPARAM2 kickmem_wget(uaecptr addr)
{
    uae_u16 *m;
    addr -= kickmem_start & kickmem_mask;
    addr &= kickmem_mask;
    m = (uae_u16 *)(kickmemory + addr);
    return do_get_mem_word(m);
}

uae_u32 REGPARAM2 kickmem_bget(uaecptr addr)
{
    addr -= kickmem_start & kickmem_mask;
    addr &= kickmem_mask;
    return kickmemory[addr];
}

void REGPARAM2 kickmem_lput(uaecptr addr, uae_u32 b)
{
    if (currprefs.illegal_mem) sprintf (warning_buffer, "Illegal kickmem lput at %08lx\n", addr);
}

void REGPARAM2 kickmem_wput(uaecptr addr, uae_u32 b)
{
    if (currprefs.illegal_mem) sprintf (warning_buffer, "Illegal kickmem wput at %08lx\n", addr);
}

void REGPARAM2 kickmem_bput(uaecptr addr, uae_u32 b)
{
    if (currprefs.illegal_mem) sprintf (warning_buffer, "Illegal kickmem lput at %08lx\n", addr);
}

int REGPARAM2 kickmem_check(uaecptr addr, uae_u32 size)
{
    addr -= kickmem_start & kickmem_mask;
    addr &= kickmem_mask;
    return (addr + size) < kickmem_size;
}

uae_u8 REGPARAM2 *kickmem_xlate(uaecptr addr)
{
    addr -= kickmem_start & kickmem_mask;
    addr &= kickmem_mask;
    return kickmemory + addr;
}

/* Default memory access functions */

int REGPARAM2 default_check(uaecptr a, uae_u32 b)
{
    return 0;
}

uae_u8 REGPARAM2 *default_xlate(uaecptr a)
{
    write_log ("Your Amiga program just did something terribly stupid\n");
    uae_reset();
    return kickmem_xlate (get_long (0xF80000)); /* So we don't crash. */
}

static int load_kickstart(void)
{
    int i;
    uae_u32 cksum = 0, prevck = 0;
    unsigned char buffer[20];

    FILE *f = zfile_open(romfile, "rb");

    if (f == NULL) {
	write_log ("No Kickstart ROM found.\n");
#if defined(AMIGA)||defined(__POS__)
#define USE_UAE_ERSATZ "USE_UAE_ERSATZ"
	if (!getenv(USE_UAE_ERSATZ)) {
	fprintf (stderr, "Using current ROM. (create ENV:%s to "
		"use uae's ROM replacement)\n",USE_UAE_ERSATZ);
	    memcpy(kickmemory,(char*)0x1000000-kickmem_size,kickmem_size);
	    goto chk_sum;
	}
#endif
	return 0;
    }

    i = fread (buffer, 1, 11, f);
    if (strncmp ((char *)buffer, "AMIROMTYPE1", 11) != 0)
	fseek (f, 0, SEEK_SET);

    i = fread (kickmemory, 1, kickmem_size, f);
    if (i == kickmem_size/2) {
	memcpy (kickmemory + kickmem_size/2, kickmemory, kickmem_size/2);
    } else if (i != kickmem_size) {
	write_log ("Error while reading Kickstart.\n");
	return 0;
    }
    zfile_close (f);

    cloanto_rom = 0;
    if (strncmp ((char *)buffer, "AMIROMTYPE1", 11) == 0) {
	FILE *keyf;
	uae_u8 *p;
	long size, cnt, t;

	cloanto_rom = 1;
	write_log ("ROM image is an encrypted \"Amiga Forever\" ROM file.\n");
	if (strlen (keyfile) == 0) {
	    write_log ("No filename given for ROM key file.\n");
	    return 0;
	}
	keyf = zfile_open (keyfile, "rb");
	if (keyf == 0) {
	    write_log ("Could not find ROM key file.\n");
	    return 0;
	}
	p = (uae_u8 *)xmalloc (524288);
	size = fread (p, 1, 524288, keyf);

	for (t = cnt = 0; cnt < kickmem_size; cnt++, t = (t + 1) % size) {
	    kickmemory[cnt] ^= p[t];
	    if (i == cnt+1)
		t = size-1;
	}
	fclose (keyf);
	free (p);
    }
#if defined(AMIGA)
    chk_sum:
#endif

    for (i = 0; i < kickmem_size; i+=4) {
	uae_u32 data = kickmemory[i]*65536*256 + kickmemory[i+1]*65536 + kickmemory[i+2]*256 + kickmemory[i+3];
	cksum += data;
	if (cksum < prevck)
	    cksum++;
	prevck = cksum;
    }
    if (cksum != 0xFFFFFFFFul) {
	write_log("Kickstart checksum incorrect. You probably have a corrupted ROM image.\n");
    }
    return 1;
}

/* Address banks */

addrbank dummy_bank = {
    dummy_lget, dummy_wget, dummy_bget,
    dummy_lput, dummy_wput, dummy_bput,
    default_xlate, dummy_check
};

addrbank mbres_bank = {
    mbres_lget, mbres_wget, mbres_bget,
    mbres_lput, mbres_wput, mbres_bput,
    default_xlate, mbres_check
};

addrbank chipmem_bank = {
    chipmem_lget, chipmem_wget, chipmem_bget,
    chipmem_lput, chipmem_wput, chipmem_bput,
    chipmem_xlate, chipmem_check
};

addrbank bogomem_bank = {
    bogomem_lget, bogomem_wget, bogomem_bget,
    bogomem_lput, bogomem_wput, bogomem_bput,
    bogomem_xlate, bogomem_check
};

addrbank a3000mem_bank = {
    a3000mem_lget, a3000mem_wget, a3000mem_bget,
    a3000mem_lput, a3000mem_wput, a3000mem_bput,
    a3000mem_xlate, a3000mem_check
};

addrbank kickmem_bank = {
    kickmem_lget, kickmem_wget, kickmem_bget,
    kickmem_lput, kickmem_wput, kickmem_bput,
    kickmem_xlate, kickmem_check
};

char *address_space, *good_address_map;
int good_address_fd;
#define MAKE_USER_PROGRAMS_BEHAVE 1
void memory_init(void)
{
    char buffer[4096];
    char *nam;
    int i, fd;
    int custom_start;

    chipmem_mask = chipmem_size - 1;
    kickmem_mask = kickmem_size - 1;
    bogomem_mask = bogomem_size - 1;
    a3000mem_mask = a3000mem_size - 1;

#ifdef USE_MAPPED_MEMORY
    fd = open("/dev/zero", O_RDWR);
    good_address_map = mmap(NULL, 1 << 24, PROT_READ, MAP_PRIVATE, fd, 0);
    /* Don't believe USER_PROGRAMS_BEHAVE. Otherwise, we'd segfault as soon
     * as a decrunch routine tries to do color register hacks. */
    address_space = mmap(NULL, 1 << 24, PROT_READ | (USER_PROGRAMS_BEHAVE || MAKE_USER_PROGRAMS_BEHAVE? PROT_WRITE : 0), MAP_PRIVATE, fd, 0);
    if ((int)address_space < 0 || (int)good_address_map < 0) {
	write_log ("Your system does not have enough virtual memory - increase swap.\n");
	abort();
    }
#ifdef MAKE_USER_PROGRAMS_BEHAVE
    memset(address_space + 0xDFF180, 0xFF, 32*2);
#else
    /* Likewise. This is mostly for mouse button checks. */
    if (USER_PROGRAMS_BEHAVE)
	memset(address_space + 0xA00000, 0xFF, 0xF00000 - 0xA00000);
#endif
    chipmemory = mmap(address_space, 0x200000, PROT_READ|PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
    kickmemory = mmap(address_space + 0xF80000, 0x80000, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, fd, 0);

    close(fd);

    good_address_fd = open(nam = tmpnam (NULL), O_CREAT|O_RDWR, 0600);
    memset (buffer,1,sizeof(buffer));
    write (good_address_fd, buffer, sizeof buffer);
    unlink (nam);

    for (i = 0; i < chipmem_size; i += 4096)
	mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE,
	     good_address_fd, 0);
    for (i = 0; i < kickmem_size; i += 4096)
	mmap(good_address_map + i + 0x1000000 - kickmem_size, 4096, PROT_READ,
	     MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
#else
    kickmemory = (uae_u8 *)xmalloc(kickmem_size);
    chipmemory = (uae_u8 *)malloc(chipmem_size);

    while (!chipmemory && chipmem_size > 512*1024) {
	chipmem_size >>= 1;
	chipmem_mask = chipmem_size - 1;
	chipmemory = (uae_u8 *)malloc(chipmem_size);
	if (chipmemory)
	    fprintf (stderr, "Reducing chipmem size to %dkb\n", chipmem_size>>10);
    }
    if (!chipmemory) {
	write_log ("virtual memory exhausted (chipmemory)!\n");
	abort();
    }
#endif

    for(i = 0; i < 65536; i++)
	put_mem_bank (i<<16, &dummy_bank);

    /* Map the chipmem into all of the lower 16MB */
    map_banks (&chipmem_bank, 0x00, 256);
    custom_start = 0xC0;

    map_banks (&custom_bank, custom_start, 0xE0-custom_start);
    map_banks (&cia_bank, 0xA0, 32);
    map_banks (&clock_bank, 0xDC, 1);

    /* @@@ Does anyone have a clue what should be in the 0x200000 - 0xA00000
     * range on an Amiga without expansion memory?  */
    custom_start = chipmem_size >> 16;
    if (custom_start < 0x20)
	custom_start = 0x20;
    map_banks (&dummy_bank, custom_start, 0xA0 - custom_start);
    /*map_banks (&mbres_bank, 0xDE, 1);*/

    if (bogomem_size > 0) {
	bogomemory = (uae_u8 *)xmalloc (bogomem_size);
	map_banks(&bogomem_bank, 0xC0, bogomem_size >> 16);
    }

    if (a3000mem_size > 0) {
	a3000memory = (uae_u8 *)xmalloc (a3000mem_size);
	map_banks(&a3000mem_bank, a3000mem_start >> 16, a3000mem_size >> 16);
    }

    map_banks (&rtarea_bank, 0xF0, 1);
    if (!load_kickstart ()) {
	init_ersatz_rom (kickmemory);
	ersatzkickfile = 1;
    }
    map_banks (&kickmem_bank, 0xF8, 8);
    map_banks (&expamem_bank, 0xE8, 1);

    if (cloanto_rom)
	map_banks (&kickmem_bank, 0xE0, 8);
}

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;
    }
    /* Some '020 Kickstarts apparently require a 24 bit address space... */
    if (CPU_LEVEL < 2 || address_space_24)
	endhioffs = 0x10000;
    for (hioffs = 0; hioffs < endhioffs; hioffs += 0x100)
	for (bnr = start; bnr < start+size; bnr++)
	    put_mem_bank((bnr + hioffs) << 16, bank);
}