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machine.c
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/*
** Oricutron
** Copyright (C) 2009-2014 Peter Gordon
**
** 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, version 2
** of the License.
**
** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
** Oric machine stuff
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#if defined(__amigaos4__) || defined(__MORPHOS__)
#include <proto/dos.h>
#include <dos/dostags.h>
#include <proto/amigaguide.h>
#endif
#include "system.h"
#include "6502.h"
#include "via.h"
#include "8912.h"
#include "gui.h"
#include "disk.h"
#include "monitor.h"
#include "6551.h"
// this plugin is coded for linux and Morphos (and windows), but it had not been tested for oricutron under Morphos
// Emulation's code is a common code for oricutron and ACE (CPC emulator)
// For instance, path for usbdrive is usbdrive/ and sdcard is sdcard/. In the future, it could support an ini file to configure this plugin.
#include "plugins/ch376/ch376.h"
#include "plugins/ch376/oric_ch376_plugin.h"
#include "plugins/twilighte_board/oric_twilighte_board_plugin.h"
#include "machine.h"
#include "avi.h"
#include "filereq.h"
#include "main.h"
#include "ula.h"
#include "joystick.h"
#include "tape.h"
#include "keyboard.h"
extern SDL_bool warpspeed, soundavailable, soundon;
extern char diskpath[], diskfile[], filetmp[];
extern char telediskpath[], telediskfile[];
extern char pravdiskpath[], pravdiskfile[];
extern SDL_bool refreshstatus, refreshavi;
char atmosromfile[1024];
char oric1romfile[1024];
char mdiscromfile[1024];
char bd500romfile[1024];
char jasmnromfile[1024];
char pravetzromfile[2][1024];
char telebankfiles[8][1024];
struct avi_handle *vidcap = NULL;
char vidcapname[128];
int vidcapcount = 0;
char screencapname[128];
int screencapcount = 0;
unsigned char rom_microdisc[8912], rom_bd500[8912], rom_jasmin[2048], rom_pravetz[512];
struct symboltable sym_microdisc, sym_bd500, sym_jasmin, sym_pravetz;
SDL_bool microdiscrom_valid, bd500rom_valid, jasminrom_valid, pravetzrom_valid;
extern struct osdmenuitem mainitems[];
Uint8 oricpalette[] = { 0x00, 0x00, 0x00,
0xff, 0x00, 0x00,
0x00, 0xff, 0x00,
0xff, 0xff, 0x00,
0x00, 0x00, 0xff,
0xff, 0x00, 0xff,
0x00, 0xff, 0xff,
0xff, 0xff, 0xff };
static Uint8 sedoric_detect[] =
{
0xfb, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x53, 0x45, 0x44, 0x4f, 0x52, 0x49, 0x43,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
};
static Uint8 stratsed_detect[] =
{
0xfb, 0x00, 0x11, 0x2c, 0x00, 0xd4, 0xa9, 0x00, 0x00, 0x52, 0xa9, 0x00, 0x8d, 0x0f, 0x05, 0x8d,
0x49, 0x05, 0xa9, 0x4c, 0xa0, 0x00, 0xa2, 0xd4, 0x8d, 0x4f, 0x05, 0x8c, 0x50, 0x05, 0x8e, 0x51,
0x05, 0xa2, 0x03, 0xec, 0x0c, 0x02, 0xd0, 0x03, 0xa9, 0x02, 0x2c, 0xa9, 0x00, 0x9d, 0x09, 0x05,
};
static Uint8 ftdos_detect[] =
{
0xfb, 0x78, 0xa9, 0x7f, 0x8d, 0x0e, 0x03, 0xa9, 0x01, 0x8d, 0xfa, 0x03, 0xa9, 0x00, 0x8d, 0xfb,
0x03, 0x85, 0x04, 0x8d, 0xf4, 0x03, 0xa2, 0x02, 0xac, 0x30, 0x02, 0xc0, 0x40, 0xd0, 0x04, 0xa9,
0x04, 0xa2, 0x06, 0x85, 0x01, 0x8e, 0x53, 0x04, 0xa9, 0xac, 0x8d, 0xfe, 0xff, 0xa9, 0x04, 0x8d,
};
static Uint8 ftdos_master_detect[] =
{
0xfb, 0xea, 0x78, 0xa9, 0x7f, 0x8d, 0x0e, 0x03, 0xa9, 0x01, 0x8d, 0xfa, 0x03, 0xa9, 0x00, 0x8d,
0xfb, 0x03, 0x85, 0x04, 0x85, 0x01, 0x8d, 0xf4, 0x03, 0xa9, 0xab, 0x8d, 0xfe, 0xff, 0xa9, 0x04,
0x8d, 0xff, 0xff, 0x8d, 0x39, 0x04, 0x8d, 0x48, 0x04, 0x8d, 0x66, 0x04, 0xa9, 0x03, 0x85, 0x02,
};
int detect_image_type(char *filename)
{
FILE *f;
size_t size;
unsigned char tmp[6400];
f = fopen(filename, "rb");
if (!f)
return IMG_I_DUNNO;
fseek(f, 0, SEEK_END);
size = ftell(f);
fseek(f, 0, SEEK_SET);
if (1 != fread(tmp, 8, 1, f))
{
fclose(f);
return IMG_I_DUNNO;
}
/* Look for tape header */
if ((memcmp(tmp, "\x16\x16\x16\x16", 4) == 0) ||
(memcmp(tmp, "\x16\x16\x16\x24", 4) == 0) ||
(memcmp(tmp, "\x16\x16\x24", 3) == 0) ||
(memcmp(tmp, "RIFF", 4) == 0) ||
(memcmp(tmp, "ORT\x00", 4) == 0))
{
fclose(f);
return IMG_TAPE;
}
/* Look for snapshot header */
if (memcmp(tmp, "OSN\x00", 4)==0)
{
fclose(f);
return IMG_SNAPSHOT;
}
/* Look for a microdisc or jasmin disk image */
if ((size > 20) && (memcmp(tmp, "MFM_DISK", 8)==0))
{
Uint8 *ptr, *eot;
int sectorlen;
SDL_bool gotsector = SDL_FALSE;
/* Read side 0, track 0 */
fseek(f, 256, SEEK_SET);
fread(tmp, 6400, 1, f);
fclose(f);
/* Find the first sector */
ptr = tmp;
eot = &tmp[6400];
while (1)
{
// Search for ID mark
while( (ptr<eot) && (ptr[0]!=0xfe) ) ptr++;
// No sector found?
if (ptr >= eot)
{
printf("%s: couldn't find track 0 sector 1 in %s\n", __func__, filename);
return IMG_I_DUNNO;
}
// Get N value
sectorlen = (1<<(ptr[4]+7));
gotsector = (ptr[3] == 1);
// Skip ID field and CRC
ptr+=7;
// Search for data ID
while( (ptr<eot) && (ptr[0]!=0xfb) && (ptr[0]!=0xf8) ) ptr++;
if (ptr >= eot)
{
printf("%s: couldn't find track 0 sector 1 in %s (2)\n", __func__, filename);
return IMG_I_DUNNO;
}
// ptr now points to the sector data
if (gotsector)
break;
// Skip this sector
ptr += sectorlen+3;
if (ptr >= eot)
{
printf("%s: couldn't find track 0 sector 1 in %s (3)\n", __func__, filename);
return IMG_I_DUNNO;
}
}
/* Got track 0, sector 1 */
/* See if we recognise it .. */
if (sectorlen == 256)
{
if (memcmp(ptr, sedoric_detect, sizeof(sedoric_detect))==0)
return IMG_ATMOS_MICRODISC;
if (memcmp(ptr, stratsed_detect, sizeof(stratsed_detect))==0)
return IMG_TELESTRAT_DISK;
if (memcmp(ptr, ftdos_detect, sizeof(ftdos_detect))==0)
return IMG_ATMOS_JASMIN;
if (memcmp(ptr, ftdos_master_detect, sizeof(ftdos_master_detect))==0)
return IMG_ATMOS_JASMIN;
}
/* No.. best guess is some sort of microdisc image */
return IMG_GUESS_MICRODISC;
}
fclose(f);
/* Maybe its a pravetz disk... */
if (size == 143360)
return IMG_PRAVETZ_DISK;
return IMG_I_DUNNO;
}
// Switch between emulation/monitor/menus etc.
void setemumode( struct machine *oric, struct osdmenuitem *mitem, int mode )
{
oric->emu_mode = mode;
switch( mode )
{
case EM_RUNNING:
SDL_COMPAT_EnableKeyRepeat( 0, 0 );
SDL_COMPAT_EnableUNICODE( SDL_FALSE );
oric->ay.soundon = soundavailable && soundon && (!warpspeed);
if( oric->ay.soundon )
{
ay_flushlog( &oric->ay );
SDL_PauseAudio( 0 );
}
ula_set_dirty( oric );
break;
case EM_MENU:
if( vidcap ) avi_close( &vidcap );
gotomenu( oric, NULL, 0 );
SDL_COMPAT_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
SDL_COMPAT_EnableUNICODE( SDL_TRUE );
oric->ay.soundon = SDL_FALSE;
if( soundavailable )
SDL_PauseAudio( 1 );
break;
case EM_DEBUG:
if( vidcap ) avi_close( &vidcap );
mon_enter( oric );
SDL_COMPAT_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
SDL_COMPAT_EnableUNICODE( SDL_TRUE );
oric->ay.soundon = SDL_FALSE;
if( soundavailable )
SDL_PauseAudio( 1 );
break;
}
}
void setromon( struct machine *oric )
{
// Determine if the ROM is currently active
oric->romon = SDL_TRUE;
if( oric->drivetype == DRV_JASMIN )
{
if( oric->jasmin.olay == 0 )
{
oric->romon = !oric->romdis;
} else {
oric->romon = SDL_FALSE;
}
}
else if( oric->drivetype == DRV_PRAVETZ )
{
oric->romon = !oric->pravetz.olay;
}
else if ( oric->type == MACH_TELESTRAT )
{
oric->romon = ( oric->tele_banktype == TELEBANK_ROM );
} else {
oric->romon = !oric->romdis;
}
}
// Oric Atmos CPU write
void atmoswrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if (oric->twilighteboard_activated && addr >= 0xc000 )
twilighteboard_oric_ROM_RAM_write(oric->twilighte,addr-0xc000,data);
else
if( ( !oric->romdis ) && ( addr >= 0xc000 ) ) return; // Can't write to ROM!
if( ( addr & 0xff00 ) == 0x0300 )
{
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else if(oric->twilighteboard_activated && ((0x342 <= addr && addr < 0x344 ) || (0x320 <= addr && addr < 0x330 )))
twilighteboard_oric_write(oric->twilighte,addr,0x00,data);
else if(oric->twilighteboard_activated && oric->twilighte->microdisc==SDL_TRUE && (0x310 <= addr && addr < 0x319 ))
{
if (addr==0x314)
twilighteboard_oric_write(oric->twilighte,addr,0x00,data);
microdisc_write( &oric->md, addr, data );
}
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr] = data;
}
// Oric-1 16k CPU write
void o16kwrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( ( !oric->romdis ) && ( addr >= 0xc000 ) ) return; // Can't write to ROM!
if( ( addr & 0xff00 ) == 0x0300 )
{
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr&0x3fff] = data;
}
// Oric Telestrat CPU write
void telestratwrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( addr >= 0xc000 )
{
// if( oric->romdis )
// {
// if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) ) return; // Can't write to ROM!
// } else {
switch( oric->tele_banktype )
{
case TELEBANK_HALFNHALF:
if( addr >= 0xe000 ) break;
case TELEBANK_RAM:
oric->rom[addr-0xc000] = data;
break;
}
return;
// }
}
if( ( addr & 0xff00 ) == 0x0300 )
{
switch( addr & 0x0f0 )
{
case 0x20:
via_write( &oric->tele_via, addr, data );
break;
case 0x10:
if( addr >= 0x31c )
acia_write( &oric->tele_acia, addr, data );
else
microdisc_write( &oric->md, addr, data );
break;
case 0x40:
if (oric->ch376_activated)
{
if (addr == 0x340 || addr == 0x341)
ch376_oric_write(oric->ch376, addr, data);
break;
}
default:
via_write( &oric->via, addr, data );
break;
}
return;
}
oric->mem[addr] = data;
}
// Oric Atmos + jasmin
void jasmin_atmoswrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->jasmin.olay == 0 )
{
if( oric->romdis )
{
if( addr >= 0xf800 ) return; // Can't write to jasmin rom
} else {
if( addr >= 0xc000 ) return; // Can't write to BASIC rom
}
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x3f4 ) && ( addr < 0x400 ) )
jasmin_write( &oric->jasmin, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr] = data;
}
// Oric-1 16k + jasmin
void jasmin_o16kwrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->jasmin.olay == 0 )
{
if( oric->romdis )
{
if( addr >= 0xf800 ) return; // Can't write to jasmin rom
} else {
if( addr >= 0xc000 ) return; // Can't write to BASIC rom
}
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x3f4 ) && ( addr < 0x400 ) )
jasmin_write( &oric->jasmin, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr&0x3fff] = data;
}
// Oric Atmos + microdisc
void microdisc_atmoswrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) ) return; // Can't write to ROM!
} else {
if( addr >= 0xc000 ) return;
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x31c ) )
microdisc_write( &oric->md, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr] = data;
}
// Oric Atmos + bd500
void bd500_atmoswrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->bd.diskrom ) && ( addr >= 0xc000 ) ) return; // Can't write to ROM!
} else {
if( addr >= 0xc000 ) return;
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x324 ) )
bd500_write( &oric->bd, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr] = data;
}
// Oric-1 16k + microdisc
void microdisc_o16kwrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) ) return; // Can't write to ROM!
} else {
if( addr >= 0xc000 ) return;
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x31c ) )
microdisc_write( &oric->md, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr&0x3fff] = data;
}
// Oric-1 16k + bd500
void bd500_o16kwrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->bd.diskrom ) && ( addr >= 0xc000 ) ) return; // Can't write to ROM!
} else {
if( addr >= 0xc000 ) return;
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x324 ) )
bd500_write( &oric->bd, addr, data );
else if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
acia_write( &oric->tele_acia, addr, data );
else if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
ch376_oric_write(oric->ch376, addr, data);
else
via_write( &oric->via, addr, data );
return;
}
oric->mem[addr&0x3fff] = data;
}
// Pravetz
void pravetz_atmoswrite( struct m6502 *cpu, unsigned short addr, unsigned char data )
{
struct machine *oric = (struct machine *)cpu->userdata;
oric->mem[addr] = data;
if( 0x300 <= addr && addr <= 0x30f )
{
via_write( &oric->via, addr, data );
}
else if( 0x310 <= addr && addr <= 0x31f )
{
if( oric->aciabackend && oric->pravetz.extension == 0x100 )
acia_write( &oric->tele_acia, addr, data );
else
pravetz_write( &oric->pravetz, addr, data );
}
else if( 0x320 <= addr && addr <= 0x3ff )
{
switch( addr )
{
case 0x380:
oric->pravetz.olay = 0;
oric->pravetz.romdis = 1;
oric->pravetz.extension = 0;
oric->romdis = !oric->pravetz.romdis;
oric->romon = !oric->romdis;
break;
case 0x381:
oric->pravetz.olay = 1;
oric->pravetz.romdis = 0;
oric->pravetz.extension = 0;
oric->romdis = !oric->pravetz.romdis;
oric->romon = !oric->romdis;
break;
case 0x382:
oric->pravetz.olay = 0;
oric->pravetz.romdis = 1;
oric->pravetz.extension = 0x100;
oric->romdis = !oric->pravetz.romdis;
oric->romon = !oric->romdis;
break;
case 0x383:
oric->pravetz.olay = 1;
oric->pravetz.romdis = 0;
oric->pravetz.extension = 0x100;
oric->romdis = !oric->pravetz.romdis;
oric->romon = !oric->romdis;
break;
default:
break;
}
}
}
// VIA is returned as RAM since it isn't ROM
SDL_bool isram( struct machine *oric, unsigned short addr )
{
if( addr < 0xc000 ) return SDL_TRUE;
if( oric->type == MACH_TELESTRAT )
{
return oric->tele_banktype == TELEBANK_RAM;
}
if( !oric->romdis ) return SDL_FALSE;
switch( oric->drivetype )
{
case DRV_MICRODISC:
if( !oric->md.diskrom ) return SDL_TRUE;
if( addr >= 0xe000 ) return SDL_FALSE;
break;
case DRV_BD500:
if( !oric->bd.diskrom ) return SDL_TRUE;
if( addr >= 0xc000 ) return SDL_FALSE;
break;
case DRV_JASMIN:
if( oric->jasmin.olay ) return SDL_TRUE;
if( addr >= 0xf800 ) return SDL_FALSE;
break;
case DRV_PRAVETZ:
if( oric->pravetz.olay ) return SDL_TRUE;
if( addr >= 0xc000 ) return SDL_FALSE;
break;
}
return SDL_TRUE;
}
// Oric Atmos CPU read
unsigned char atmosread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( ( addr & 0xff00 ) == 0x0300 )
{
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
if( oric->twilighteboard_activated)
{
if ((0x342 <= addr && addr < 0x344 ) || (0x320 <= addr && addr < 0x330 ))
return twilighteboard_oric_read(oric->twilighte,addr);
if (oric->twilighte->microdisc==SDL_TRUE)
{
if (0x310 <= addr && addr < 0x319)
return microdisc_read( &oric->md, addr );
}
}
return via_read( &oric->via, addr );
}
if( ( !oric->romdis ) && ( addr >= 0xc000 ) ) {
if (oric->twilighteboard_activated)
return twilighteboard_oric_ROM_RAM_read(oric->twilighte,addr-0xc000);
else
return oric->rom[addr-0xc000];
}
return oric->mem[addr];
}
// Oric-1 16K CPU read
unsigned char o16kread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( ( addr & 0xff00 ) == 0x0300 )
{
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
if( ( !oric->romdis ) && ( addr >= 0xc000 ) )
return oric->rom[addr-0xc000];
return oric->mem[addr&0x3fff];
}
// Oric Telestrat CPU read
unsigned char telestratread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( ( addr & 0xff00 ) == 0x0300 )
{
switch( addr & 0x0f0 )
{
case 0x010:
if( addr >= 0x31c )
{
return acia_read( &oric->tele_acia, addr );
}
return microdisc_read( &oric->md, addr );
case 0x020:
return via_read( &oric->tele_via, addr );
case 0x040:
if (oric->ch376_activated)
{
if (addr == 0x340 || addr == 0x341)
return ch376_oric_read(oric->ch376, addr);
}
}
return via_read( &oric->via, addr );
}
if( addr >= 0xc000 )
{
// if( oric->romdis )
// {
// if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) )
// return rom_microdisc[addr-0xe000];
// } else {
return oric->rom[addr-0xc000];
// }
}
return oric->mem[addr];
}
// Oric Atmos + jasmin
unsigned char jasmin_atmosread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->jasmin.olay == 0 )
{
if( oric->romdis )
{
if( addr >= 0xf800 ) return rom_jasmin[addr-0xf800];
} else {
if( addr >= 0xc000 ) return oric->rom[addr-0xc000];
}
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x3f4 ) && ( addr < 0x400 ) )
return jasmin_read( &oric->jasmin, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
return oric->mem[addr];
}
// Oric 16k + jasmin
unsigned char jasmin_o16kread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->jasmin.olay == 0 )
{
if( oric->romdis )
{
if( addr >= 0xf800 ) return rom_jasmin[addr-0xf800];
} else {
if( addr >= 0xc000 ) return oric->rom[addr-0xc000];
}
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x3f4 ) && ( addr < 0x400 ) )
return jasmin_read( &oric->jasmin, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
return oric->mem[addr&0x3fff];
}
// Oric Atmos + microdisc
unsigned char microdisc_atmosread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) )
return rom_microdisc[addr-0xe000];
} else {
if( addr >= 0xc000 )
return oric->rom[addr-0xc000];
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x31c ) )
return microdisc_read( &oric->md, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
return oric->mem[addr];
}
// Oric Atmos + bd500
unsigned char bd500_atmosread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->bd.diskrom ) && ( addr >= 0xe000 ) )
return rom_bd500[addr-0xe000];
} else {
if( addr >= 0xc000 )
return oric->rom[addr-0xc000];
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x324 ) )
return bd500_read( &oric->bd, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
return oric->mem[addr];
}
// Oric-1 16k + microdisc
unsigned char microdisc_o16kread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->md.diskrom ) && ( addr >= 0xe000 ) )
return rom_microdisc[addr-0xe000];
} else {
if( addr >= 0xc000 )
return oric->rom[addr-0xc000];
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x31c ) )
return microdisc_read( &oric->md, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}
return oric->mem[addr&0x3fff];
}
// Oric-1 16k + bd500
unsigned char bd500_o16kread( struct m6502 *cpu, unsigned short addr )
{
struct machine *oric = (struct machine *)cpu->userdata;
if( oric->romdis )
{
if( ( oric->bd.diskrom ) && ( addr >= 0xe000 ) )
return rom_bd500[addr-0xe000];
} else {
if( addr >= 0xc000 )
return oric->rom[addr-0xc000];
}
if( ( addr & 0xff00 ) == 0x0300 )
{
if( ( addr >= 0x310 ) && ( addr < 0x324 ) )
return bd500_read( &oric->bd, addr );
if( oric->aciabackend && ( oric->aciaoffset <= addr && addr < oric->aciaoffset+4 ) )
return acia_read( &oric->tele_acia, addr );
if( oric->ch376_activated && ( 0x340 <= addr ) && ( addr < 0x342 ) )
return ch376_oric_read(oric->ch376, addr);
return via_read( &oric->via, addr );
}