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/*
* drivemem.c - Drive memory handling.
*
* Written by
* Andreas Boose <viceteam@t-online.de>
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* 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 "vice.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "drive.h"
#include "drivemem.h"
#include "driverom.h"
#include "drivetypes.h"
#include "log.h"
#include "machine-drive.h"
#ifdef WATCOM_COMPILE
#include "../mem.h"
#else
#include "mem.h"
#endif
#include "monitor.h"
#include "types.h"
/* ------------------------------------------------------------------------- */
/* Common memory access. */
BYTE REGPARM2 drive_read_rom(drive_context_t *drv, WORD address)
{
return drv->drive->rom[address & 0x7fff];
}
static BYTE REGPARM2 drive_read_free(drive_context_t *drv, WORD address)
{
return address >> 8;
}
static void REGPARM3 drive_store_free(drive_context_t *drv, WORD address,
BYTE value)
{
return;
}
/* ------------------------------------------------------------------------- */
/* Watchpoint memory access. */
static BYTE REGPARM2 drive_read_watch(drive_context_t *drv, WORD address)
{
monitor_watch_push_load_addr(address, drv->cpu->monspace);
return drv->cpud->read_func_nowatch[address >> 8](drv, address);
}
static void REGPARM3 drive_store_watch(drive_context_t *drv, WORD address,
BYTE value)
{
monitor_watch_push_store_addr(address, drv->cpu->monspace);
drv->cpud->store_func_nowatch[address >> 8](drv, address, value);
}
/* ------------------------------------------------------------------------- */
void drivemem_set_func(drivecpud_context_t *cpud,
unsigned int start, unsigned int stop,
drive_read_func_t *read_func,
drive_store_func_t *store_func)
{
unsigned int i;
if (read_func != NULL) {
for (i = start; i < stop; i++)
cpud->read_func_nowatch[i] = read_func;
}
if (store_func != NULL) {
for (i = start; i < stop; i++)
cpud->store_func_nowatch[i] = store_func;
}
}
#ifdef _MSC_VER
#pragma optimize("",off)
#endif
void drivemem_init(drive_context_t *drv, unsigned int type)
{
int i;
for (i = 0; i < 0x101; i++) {
drv->cpud->read_func_watch[i] = drive_read_watch;
drv->cpud->store_func_watch[i] = drive_store_watch;
drv->cpud->read_func_nowatch[i] = drive_read_free;
drv->cpud->store_func_nowatch[i] = drive_store_free;
}
machine_drive_mem_init(drv, type);
drv->cpud->read_func_nowatch[0x100] = drv->cpud->read_func_nowatch[0];
drv->cpud->store_func_nowatch[0x100] = drv->cpud->store_func_nowatch[0];
memcpy(drv->cpud->read_func, drv->cpud->read_func_nowatch,
sizeof(drive_read_func_t *) * 0x101);
memcpy(drv->cpud->store_func, drv->cpud->store_func_nowatch,
sizeof(drive_store_func_t *) * 0x101);
switch (type) {
case DRIVE_TYPE_NONE:
break;
case DRIVE_TYPE_2040:
drv->drive->rom_start = 0xe000;
break;
case DRIVE_TYPE_3040:
case DRIVE_TYPE_4040:
drv->drive->rom_start = 0xd000;
break;
case DRIVE_TYPE_1541II:
case DRIVE_TYPE_1551:
case DRIVE_TYPE_2031:
case DRIVE_TYPE_1001:
case DRIVE_TYPE_8050:
case DRIVE_TYPE_8250:
drv->drive->rom_start = 0xc000;
break;
case DRIVE_TYPE_1541:
case DRIVE_TYPE_1570:
case DRIVE_TYPE_1571:
case DRIVE_TYPE_1571CR:
case DRIVE_TYPE_1581:
drv->drive->rom_start = 0x8000;
break;
default:
log_error(LOG_ERR, "DRIVEMEM: Unknown drive type `%i'.", type);
}
}
#ifdef _MSC_VER
#pragma optimize("",on)
#endif
mem_ioreg_list_t *drivemem_ioreg_list_get(void *context)
{
unsigned int type;
mem_ioreg_list_t *drivemem_ioreg_list = NULL;
type = ((drive_context_t *)context)->drive->type;
switch (type) {
case DRIVE_TYPE_1541:
case DRIVE_TYPE_1541II:
mon_ioreg_add_list(&drivemem_ioreg_list, "VIA1", 0x1800, 0x180f);
mon_ioreg_add_list(&drivemem_ioreg_list, "VIA2", 0x1c00, 0x1c0f);
break;
case DRIVE_TYPE_1551:
mon_ioreg_add_list(&drivemem_ioreg_list, "TPI", 0x4000, 0x4007);
break;
case DRIVE_TYPE_1570:
case DRIVE_TYPE_1571:
case DRIVE_TYPE_1571CR:
mon_ioreg_add_list(&drivemem_ioreg_list, "VIA1", 0x1800, 0x180f);
mon_ioreg_add_list(&drivemem_ioreg_list, "VIA2", 0x1c00, 0x1c0f);
mon_ioreg_add_list(&drivemem_ioreg_list, "WD1770", 0x2000, 0x2003);
mon_ioreg_add_list(&drivemem_ioreg_list, "CIA", 0x4000, 0x400f);
break;
case DRIVE_TYPE_1581:
mon_ioreg_add_list(&drivemem_ioreg_list, "CIA", 0x4000, 0x400f);
mon_ioreg_add_list(&drivemem_ioreg_list, "WD1770", 0x6000, 0x6003);
break;
case DRIVE_TYPE_2031:
case DRIVE_TYPE_2040:
case DRIVE_TYPE_3040:
case DRIVE_TYPE_4040:
case DRIVE_TYPE_1001:
case DRIVE_TYPE_8050:
case DRIVE_TYPE_8250:
mon_ioreg_add_list(&drivemem_ioreg_list, "RIOT1", 0x0200, 0x021f);
mon_ioreg_add_list(&drivemem_ioreg_list, "RIOT2", 0x0280, 0x029f);
break;
default:
log_error(LOG_ERR, "DRIVEMEM: Unknown drive type `%i'.", type);
}
return drivemem_ioreg_list;
}
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