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71a8c57c34
mame/src/mess/drivers/timex.c
Miodrag Milanovic 71a8c57c34 small cleanup (nw)
2013-03-04 15:09:43 +00:00

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/***************************************************************************
NOTE: ****** Specbusy: press N, R, or E to boot *************
Spectrum/Inves/TK90X etc. memory map:
CPU:
0000-3fff ROM
4000-ffff RAM
Spectrum 128/+2/+2a/+3 memory map:
CPU:
0000-3fff Banked ROM/RAM (banked rom only on 128/+2)
4000-7fff Banked RAM
8000-bfff Banked RAM
c000-ffff Banked RAM
TS2068 memory map: (Can't have both EXROM and DOCK active)
The 8K EXROM can be loaded into multiple pages.
CPU:
0000-1fff ROM / EXROM / DOCK (Cartridge)
2000-3fff ROM / EXROM / DOCK
4000-5fff \
6000-7fff \
8000-9fff |- RAM / EXROM / DOCK
a000-bfff |
c000-dfff /
e000-ffff /
Interrupts:
Changes:
29/1/2000 KT - Implemented initial +3 emulation.
30/1/2000 KT - Improved input port decoding for reading and therefore
correct keyboard handling for Spectrum and +3.
31/1/2000 KT - Implemented buzzer sound for Spectrum and +3.
Implementation copied from Paul Daniel's Jupiter driver.
Fixed screen display problems with dirty chars.
Added support to load .Z80 snapshots. 48k support so far.
13/2/2000 KT - Added Interface II, Kempston, Fuller and Mikrogen
joystick support.
17/2/2000 DJR - Added full key descriptions and Spectrum+ keys.
Fixed Spectrum +3 keyboard problems.
17/2/2000 KT - Added tape loading from WAV/Changed from DAC to generic
speaker code.
18/2/2000 KT - Added tape saving to WAV.
27/2/2000 KT - Took DJR's changes and added my changes.
27/2/2000 KT - Added disk image support to Spectrum +3 driver.
27/2/2000 KT - Added joystick I/O code to the Spectrum +3 I/O handler.
14/3/2000 DJR - Tape handling dipswitch.
26/3/2000 DJR - Snapshot files are now classifed as snapshots not
cartridges.
04/4/2000 DJR - Spectrum 128 / +2 Support.
13/4/2000 DJR - +4 Support (unofficial 48K hack).
13/4/2000 DJR - +2a Support (rom also used in +3 models).
13/4/2000 DJR - TK90X, TK95 and Inves support (48K clones).
21/4/2000 DJR - TS2068 and TC2048 support (TC2048 Supports extra video
modes but doesn't have bank switching or sound chip).
09/5/2000 DJR - Spectrum +2 (France, Spain), +3 (Spain).
17/5/2000 DJR - Dipswitch to enable/disable disk drives on +3 and clones.
27/6/2000 DJR - Changed 128K/+3 port decoding (sound now works in Zub 128K).
06/8/2000 DJR - Fixed +3 Floppy support
10/2/2001 KT - Re-arranged code and split into each model emulated.
Code is split into 48k, 128k, +3, tc2048 and ts2048
segments. 128k uses some of the functions in 48k, +3
uses some functions in 128, and tc2048/ts2048 use some
of the functions in 48k. The code has been arranged so
these functions come in some kind of "override" order,
read functions changed to use READ8_HANDLER and write
functions changed to use WRITE8_HANDLER.
Added Scorpion256 preliminary.
18/6/2001 DJR - Added support for Interface 2 cartridges.
xx/xx/2001 KS - TS-2068 sound fixed.
Added support for DOCK cartridges for TS-2068.
Added Spectrum 48k Psycho modified rom driver.
Added UK-2086 driver.
23/12/2001 KS - 48k machines are now able to run code in screen memory.
Programs which keep their code in screen memory
like monitors, tape copiers, decrunchers, etc.
works now.
Fixed problem with interrupt vector set to 0xffff (much
more 128k games works now).
A useful used trick on the Spectrum is to set
interrupt vector to 0xffff (using the table
which contain 0xff's) and put a byte 0x18 hex,
the opcode for JR, at this address. The first
byte of the ROM is a 0xf3 (DI), so the JR will
jump to 0xfff4, where a long JP to the actual
interrupt routine is put. Due to unideal
bankswitching in MAME this JP were to 0001 what
causes Spectrum to reset. Fixing this problem
made much more software runing (i.e. Paperboy).
Corrected frames per second value for 48k and 128k
Sincalir machines.
There are 50.08 frames per second for Spectrum
48k what gives 69888 cycles for each frame and
50.021 for Spectrum 128/+2/+2A/+3 what gives
70908 cycles for each frame.
Remaped some Spectrum+ keys.
Presing F3 to reset was seting 0xf7 on keyboard
input port. Problem occurred for snapshots of
some programms where it was readed as pressing
key 4 (which is exit in Tapecopy by R. Dannhoefer
for example).
Added support to load .SP snapshots.
Added .BLK tape images support.
.BLK files are identical to .TAP ones, extension
is an only difference.
08/03/2002 KS - #FF port emulation added.
Arkanoid works now, but is not playable due to
completly messed timings.
Initialisation values used when determining which model is being emulated:
48K Spectrum doesn't use either port.
128K/+2 Bank switches with port 7ffd only.
+3/+2a Bank switches with both ports.
Notes:
1. No contented memory.
2. No hi-res colour effects (need contended memory first for accurate timing).
3. Multiface 1 and Interface 1 not supported.
4. Horace and the Spiders cartridge doesn't run properly.
5. Tape images not supported:
.TZX, .SPC, .ITM, .PAN, .TAP(Warajevo), .VOC, .ZXS.
6. Snapshot images not supported:
.ACH, .PRG, .RAW, .SEM, .SIT, .SNX, .ZX, .ZXS, .ZX82.
7. 128K emulation is not perfect - the 128K machines crash and hang while
running quite a lot of games.
8. Disk errors occur on some +3 games.
9. Video hardware of all machines is timed incorrectly.
10. EXROM and HOME cartridges are not emulated.
11. The TK90X and TK95 roms output 0 to port #df on start up.
12. The purpose of this port is unknown (probably display mode as TS2068) and
thus is not emulated.
Very detailed infos about the ZX Spectrum +3e can be found at
http://www.z88forever.org.uk/zxplus3e/
*******************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "includes/spectrum.h"
#include "imagedev/snapquik.h"
#include "imagedev/cartslot.h"
#include "imagedev/cassette.h"
#include "sound/speaker.h"
#include "sound/ay8910.h"
#include "formats/tzx_cas.h"
#include "machine/spec_snqk.h"
#include "machine/beta.h"
#include "machine/ram.h"
enum
{
TIMEX_CART_NONE,
TIMEX_CART_DOCK,
TIMEX_CART_EXROM,
TIMEX_CART_HOME
};
struct timex_cart_t
{
int type;
UINT8 chunks;
UINT8 *data;
};
static timex_cart_t timex_cart;
const timex_cart_t *timex_cart_data(void)
{
return &timex_cart;
}
static const ay8910_interface spectrum_ay_interface =
{
AY8910_LEGACY_OUTPUT,
AY8910_DEFAULT_LOADS,
DEVCB_NULL
};
/****************************************************************************************************/
/* TS2048 specific functions */
READ8_MEMBER( spectrum_state::ts2068_port_f4_r )
{
return m_port_f4_data;
}
WRITE8_MEMBER( spectrum_state::ts2068_port_f4_w )
{
m_port_f4_data = data;
ts2068_update_memory();
}
READ8_MEMBER( spectrum_state::ts2068_port_ff_r )
{
return m_port_ff_data;
}
WRITE8_MEMBER( spectrum_state::ts2068_port_ff_w )
{
/* Bits 0-2 Video Mode Select
Bits 3-5 64 column mode ink/paper selection
(See ts2068_vh_screenrefresh for more info)
Bit 6 17ms Interrupt Inhibit
Bit 7 Cartridge (0) / EXROM (1) select
*/
m_port_ff_data = data;
ts2068_update_memory();
logerror("Port %04x write %02x\n", offset, data);
}
/*******************************************************************
*
* Bank switch between the 3 internal memory banks HOME, EXROM
* and DOCK (Cartridges). The HOME bank contains 16K ROM in the
* 0-16K area and 48K RAM fills the rest. The EXROM contains 8K
* ROM and can appear in every 8K segment (ie 0-8K, 8-16K etc).
* The DOCK is empty and is meant to be occupied by cartridges
* you can plug into the cartridge dock of the 2068.
*
* The address space is divided into 8 8K chunks. Bit 0 of port
* #f4 corresponds to the 0-8K chunk, bit 1 to the 8-16K chunk
* etc. If the bit is 0 then the chunk is controlled by the HOME
* bank. If the bit is 1 then the chunk is controlled by either
* the DOCK or EXROM depending on bit 7 of port #ff. Note this
* means that that the Z80 can't see chunks of the EXROM and DOCK
* at the same time.
*
*******************************************************************/
void spectrum_state::ts2068_update_memory()
{
UINT8 *messram = m_ram->pointer();
address_space &space = m_maincpu->space(AS_PROGRAM);
unsigned char *ChosenROM, *ExROM;
const timex_cart_t *timex_cart = timex_cart_data();
int timex_cart_type = timex_cart->type;
UINT8 timex_cart_chunks = timex_cart->chunks;
UINT8 *DOCK = timex_cart->data;
ExROM = memregion("maincpu")->base() + 0x014000;
if (m_port_f4_data & 0x01)
{
if (m_port_ff_data & 0x80)
{
space.install_read_bank(0x0000, 0x1fff, "bank1");
space.unmap_write(0x0000, 0x1fff);
membank("bank1")->set_base(ExROM);
logerror("0000-1fff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank1")->set_base(DOCK);
space.install_read_bank(0x0000, 0x1fff, "bank1");
if (timex_cart_chunks&0x01)
space.install_write_bank(0x0000, 0x1fff, "bank9");
else
space.unmap_write(0x0000, 0x1fff);
}
else
{
space.nop_read(0x0000, 0x1fff);
space.unmap_write(0x0000, 0x1fff);
}
logerror("0000-1fff Cartridge\n");
}
}
else
{
ChosenROM = memregion("maincpu")->base() + 0x010000;
membank("bank1")->set_base(ChosenROM);
space.install_read_bank(0x0000, 0x1fff, "bank1");
space.unmap_write(0x0000, 0x1fff);
logerror("0000-1fff HOME\n");
}
if (m_port_f4_data & 0x02)
{
if (m_port_ff_data & 0x80)
{
membank("bank2")->set_base(ExROM);
space.install_read_bank(0x2000, 0x3fff, "bank2");
space.unmap_write(0x2000, 0x3fff);
logerror("2000-3fff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank2")->set_base(DOCK+0x2000);
space.install_read_bank(0x2000, 0x3fff, "bank2");
if (timex_cart_chunks&0x02)
space.install_write_bank(0x2000, 0x3fff, "bank10");
else
space.unmap_write(0x2000, 0x3fff);
}
else
{
space.nop_read(0x2000, 0x3fff);
space.unmap_write(0x2000, 0x3fff);
}
logerror("2000-3fff Cartridge\n");
}
}
else
{
ChosenROM = memregion("maincpu")->base() + 0x012000;
membank("bank2")->set_base(ChosenROM);
space.install_read_bank(0x2000, 0x3fff, "bank2");
space.unmap_write(0x2000, 0x3fff);
logerror("2000-3fff HOME\n");
}
if (m_port_f4_data & 0x04)
{
if (m_port_ff_data & 0x80)
{
membank("bank3")->set_base(ExROM);
space.install_read_bank(0x4000, 0x5fff, "bank3");
space.unmap_write(0x4000, 0x5fff);
logerror("4000-5fff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank3")->set_base(DOCK+0x4000);
space.install_read_bank(0x4000, 0x5fff, "bank3");
if (timex_cart_chunks&0x04)
space.install_write_bank(0x4000, 0x5fff, "bank11");
else
space.unmap_write(0x4000, 0x5fff);
}
else
{
space.nop_read(0x4000, 0x5fff);
space.unmap_write(0x4000, 0x5fff);
}
logerror("4000-5fff Cartridge\n");
}
}
else
{
membank("bank3")->set_base(messram);
membank("bank11")->set_base(messram);
space.install_read_bank(0x4000, 0x5fff, "bank3");
space.install_write_bank(0x4000, 0x5fff, "bank11");
logerror("4000-5fff RAM\n");
}
if (m_port_f4_data & 0x08)
{
if (m_port_ff_data & 0x80)
{
membank("bank4")->set_base(ExROM);
space.install_read_bank(0x6000, 0x7fff, "bank4");
space.unmap_write(0x6000, 0x7fff);
logerror("6000-7fff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank4")->set_base(DOCK+0x6000);
space.install_read_bank(0x6000, 0x7fff, "bank4");
if (timex_cart_chunks&0x08)
space.install_write_bank(0x6000, 0x7fff, "bank12");
else
space.unmap_write(0x6000, 0x7fff);
}
else
{
space.nop_read(0x6000, 0x7fff);
space.unmap_write(0x6000, 0x7fff);
}
logerror("6000-7fff Cartridge\n");
}
}
else
{
membank("bank4")->set_base(messram + 0x2000);
membank("bank12")->set_base(messram + 0x2000);
space.install_read_bank(0x6000, 0x7fff, "bank4");
space.install_write_bank(0x6000, 0x7fff, "bank12");
logerror("6000-7fff RAM\n");
}
if (m_port_f4_data & 0x10)
{
if (m_port_ff_data & 0x80)
{
membank("bank5")->set_base(ExROM);
space.install_read_bank(0x8000, 0x9fff, "bank5");
space.unmap_write(0x8000, 0x9fff);
logerror("8000-9fff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank5")->set_base(DOCK+0x8000);
space.install_read_bank(0x8000, 0x9fff,"bank5");
if (timex_cart_chunks&0x10)
space.install_write_bank(0x8000, 0x9fff,"bank13");
else
space.unmap_write(0x8000, 0x9fff);
}
else
{
space.nop_read(0x8000, 0x9fff);
space.unmap_write(0x8000, 0x9fff);
}
logerror("8000-9fff Cartridge\n");
}
}
else
{
membank("bank5")->set_base(messram + 0x4000);
membank("bank13")->set_base(messram + 0x4000);
space.install_read_bank(0x8000, 0x9fff,"bank5");
space.install_write_bank(0x8000, 0x9fff,"bank13");
logerror("8000-9fff RAM\n");
}
if (m_port_f4_data & 0x20)
{
if (m_port_ff_data & 0x80)
{
membank("bank6")->set_base(ExROM);
space.install_read_bank(0xa000, 0xbfff, "bank6");
space.unmap_write(0xa000, 0xbfff);
logerror("a000-bfff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank6")->set_base(DOCK+0xa000);
space.install_read_bank(0xa000, 0xbfff, "bank6");
if (timex_cart_chunks&0x20)
space.install_write_bank(0xa000, 0xbfff, "bank14");
else
space.unmap_write(0xa000, 0xbfff);
}
else
{
space.nop_read(0xa000, 0xbfff);
space.unmap_write(0xa000, 0xbfff);
}
logerror("a000-bfff Cartridge\n");
}
}
else
{
membank("bank6")->set_base(messram + 0x6000);
membank("bank14")->set_base(messram + 0x6000);
space.install_read_bank(0xa000, 0xbfff, "bank6");
space.install_write_bank(0xa000, 0xbfff, "bank14");
logerror("a000-bfff RAM\n");
}
if (m_port_f4_data & 0x40)
{
if (m_port_ff_data & 0x80)
{
membank("bank7")->set_base(ExROM);
space.install_read_bank(0xc000, 0xdfff, "bank7");
space.unmap_write(0xc000, 0xdfff);
logerror("c000-dfff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank7")->set_base(DOCK+0xc000);
space.install_read_bank(0xc000, 0xdfff, "bank7");
if (timex_cart_chunks&0x40)
space.install_write_bank(0xc000, 0xdfff, "bank15");
else
space.unmap_write(0xc000, 0xdfff);
}
else
{
space.nop_read(0xc000, 0xdfff);
space.unmap_write(0xc000, 0xdfff);
}
logerror("c000-dfff Cartridge\n");
}
}
else
{
membank("bank7")->set_base(messram + 0x8000);
membank("bank15")->set_base(messram + 0x8000);
space.install_read_bank(0xc000, 0xdfff, "bank7");
space.install_write_bank(0xc000, 0xdfff, "bank15");
logerror("c000-dfff RAM\n");
}
if (m_port_f4_data & 0x80)
{
if (m_port_ff_data & 0x80)
{
membank("bank8")->set_base(ExROM);
space.install_read_bank(0xe000, 0xffff, "bank8");
space.unmap_write(0xe000, 0xffff);
logerror("e000-ffff EXROM\n");
}
else
{
if (timex_cart_type == TIMEX_CART_DOCK)
{
membank("bank8")->set_base(DOCK+0xe000);
space.install_read_bank(0xe000, 0xffff, "bank8");
if (timex_cart_chunks&0x80)
space.install_write_bank(0xe000, 0xffff, "bank16");
else
space.unmap_write(0xe000, 0xffff);
}
else
{
space.nop_read(0xe000, 0xffff);
space.unmap_write(0xe000, 0xffff);
}
logerror("e000-ffff Cartridge\n");
}
}
else
{
membank("bank8")->set_base(messram + 0xa000);
membank("bank16")->set_base(messram + 0xa000);
space.install_read_bank(0xe000, 0xffff, "bank8");
space.install_write_bank(0xe000, 0xffff, "bank16");
logerror("e000-ffff RAM\n");
}
}
static ADDRESS_MAP_START(ts2068_io, AS_IO, 8, spectrum_state )
AM_RANGE(0x1f, 0x1f) AM_READ(spectrum_port_1f_r ) AM_MIRROR(0xff00)
AM_RANGE(0x7f, 0x7f) AM_READ(spectrum_port_7f_r ) AM_MIRROR(0xff00)
AM_RANGE(0xdf, 0xdf) AM_READ(spectrum_port_df_r ) AM_MIRROR(0xff00)
AM_RANGE(0xf4, 0xf4) AM_READWRITE(ts2068_port_f4_r,ts2068_port_f4_w ) AM_MIRROR(0xff00)
AM_RANGE(0xf5, 0xf5) AM_DEVWRITE_LEGACY("ay8912", ay8910_address_w ) AM_MIRROR(0xff00)
AM_RANGE(0xf6, 0xf6) AM_DEVREADWRITE_LEGACY("ay8912", ay8910_r, ay8910_data_w ) AM_MIRROR(0xff00)
AM_RANGE(0xfe, 0xfe) AM_READWRITE(spectrum_port_fe_r,spectrum_port_fe_w ) AM_MIRROR(0xff00) AM_MASK(0xffff)
AM_RANGE(0xff, 0xff) AM_READWRITE(ts2068_port_ff_r,ts2068_port_ff_w ) AM_MIRROR(0xff00)
ADDRESS_MAP_END
static ADDRESS_MAP_START(ts2068_mem, AS_PROGRAM, 8, spectrum_state )
AM_RANGE(0x0000, 0x1fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank9")
AM_RANGE(0x2000, 0x3fff) AM_READ_BANK("bank2") AM_WRITE_BANK("bank10")
AM_RANGE(0x4000, 0x5fff) AM_READ_BANK("bank3") AM_WRITE_BANK("bank11")
AM_RANGE(0x6000, 0x7fff) AM_READ_BANK("bank4") AM_WRITE_BANK("bank12")
AM_RANGE(0x8000, 0x9fff) AM_READ_BANK("bank5") AM_WRITE_BANK("bank13")
AM_RANGE(0xa000, 0xbfff) AM_READ_BANK("bank6") AM_WRITE_BANK("bank14")
AM_RANGE(0xc000, 0xdfff) AM_READ_BANK("bank7") AM_WRITE_BANK("bank15")
AM_RANGE(0xe000, 0xffff) AM_READ_BANK("bank8") AM_WRITE_BANK("bank16")
ADDRESS_MAP_END
MACHINE_RESET_MEMBER(spectrum_state,ts2068)
{
m_port_ff_data = 0;
m_port_f4_data = 0;
ts2068_update_memory();
MACHINE_RESET_CALL_MEMBER(spectrum);
}
/****************************************************************************************************/
/* TC2048 specific functions */
WRITE8_MEMBER( spectrum_state::tc2048_port_ff_w )
{
m_port_ff_data = data;
logerror("Port %04x write %02x\n", offset, data);
}
static ADDRESS_MAP_START(tc2048_io, AS_IO, 8, spectrum_state )
AM_RANGE(0x00, 0x00) AM_READWRITE(spectrum_port_fe_r,spectrum_port_fe_w) AM_MIRROR(0xfffe) AM_MASK(0xffff)
AM_RANGE(0x1f, 0x1f) AM_READ(spectrum_port_1f_r) AM_MIRROR(0xff00)
AM_RANGE(0x7f, 0x7f) AM_READ(spectrum_port_7f_r) AM_MIRROR(0xff00)
AM_RANGE(0xdf, 0xdf) AM_READ(spectrum_port_df_r) AM_MIRROR(0xff00)
AM_RANGE(0xff, 0xff) AM_READWRITE(ts2068_port_ff_r,tc2048_port_ff_w) AM_MIRROR(0xff00)
ADDRESS_MAP_END
static ADDRESS_MAP_START(tc2048_mem, AS_PROGRAM, 8, spectrum_state )
AM_RANGE( 0x0000, 0x3fff) AM_ROM
AM_RANGE( 0x4000, 0xffff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank2")
ADDRESS_MAP_END
MACHINE_RESET_MEMBER(spectrum_state,tc2048)
{
UINT8 *messram = m_ram->pointer();
membank("bank1")->set_base(messram);
membank("bank2")->set_base(messram);
m_port_ff_data = 0;
m_port_f4_data = -1;
MACHINE_RESET_CALL_MEMBER(spectrum);
}
DEVICE_IMAGE_LOAD_MEMBER( spectrum_state, timex_cart )
{
int file_size;
UINT8 * file_data;
int chunks_in_file = 0;
int i;
logerror ("Trying to load cart\n");
file_size = image.length();
if (file_size < 0x09)
{
logerror ("Bad file size\n");
return IMAGE_INIT_FAIL;
}
file_data = (UINT8 *)malloc(file_size);
if (file_data == NULL)
{
logerror ("Memory allocating error\n");
return IMAGE_INIT_FAIL;
}
image.fread(file_data, file_size);
for (i=0; i<8; i++)
if(file_data[i+1]&0x02) chunks_in_file++;
if (chunks_in_file*0x2000+0x09 != file_size)
{
free (file_data);
logerror ("File corrupted\n");
return IMAGE_INIT_FAIL;
}
switch (file_data[0x00])
{
case 0x00: logerror ("DOCK cart\n");
timex_cart.type = TIMEX_CART_DOCK;
timex_cart.data = (UINT8*) malloc (0x10000);
if (!timex_cart.data)
{
free (file_data);
logerror ("Memory allocate error\n");
return IMAGE_INIT_FAIL;
}
chunks_in_file = 0;
for (i=0; i<8; i++)
{
timex_cart.chunks = timex_cart.chunks | ((file_data[i+1]&0x01)<<i);
if (file_data[i+1]&0x02)
{
memcpy (timex_cart.data+i*0x2000, file_data+0x09+chunks_in_file*0x2000, 0x2000);
chunks_in_file++;
}
else
{
if (file_data[i+1]&0x01)
memset (timex_cart.data+i*0x2000, 0x00, 0x2000);
else
memset (timex_cart.data+i*0x2000, 0xff, 0x2000);
}
}
free (file_data);
break;
default: logerror ("Cart type not supported\n");
free (file_data);
timex_cart.type = TIMEX_CART_NONE;
return IMAGE_INIT_FAIL;
}
logerror ("Cart loaded\n");
logerror ("Chunks %02x\n", timex_cart.chunks);
return IMAGE_INIT_PASS;
}
DEVICE_IMAGE_UNLOAD_MEMBER( spectrum_state, timex_cart )
{
if (timex_cart.data)
{
free (timex_cart.data);
timex_cart.data = NULL;
}
timex_cart.type = TIMEX_CART_NONE;
timex_cart.chunks = 0x00;
}
/* F4 Character Displayer - tc2048 code is inherited from the spectrum */
static const gfx_layout ts2068_charlayout =
{
8, 8, /* 8 x 8 characters */
96, /* 96 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*8 /* every char takes 8 bytes */
};
static GFXDECODE_START( ts2068 )
GFXDECODE_ENTRY( "maincpu", 0x13d00, ts2068_charlayout, 0, 8 )
GFXDECODE_END
static MACHINE_CONFIG_DERIVED( ts2068, spectrum_128 )
MCFG_CPU_REPLACE("maincpu", Z80, XTAL_14_112MHz/4) /* From Schematic; 3.528 MHz */
MCFG_CPU_PROGRAM_MAP(ts2068_mem)
MCFG_CPU_IO_MAP(ts2068_io)
MCFG_MACHINE_RESET_OVERRIDE(spectrum_state, ts2068 )
/* video hardware */
MCFG_SCREEN_MODIFY("screen")
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_SIZE(TS2068_SCREEN_WIDTH, TS2068_SCREEN_HEIGHT)
MCFG_SCREEN_VISIBLE_AREA(0, TS2068_SCREEN_WIDTH-1, 0, TS2068_SCREEN_HEIGHT-1)
MCFG_SCREEN_UPDATE_DRIVER(spectrum_state, screen_update_ts2068)
MCFG_GFXDECODE(ts2068)
MCFG_VIDEO_START_OVERRIDE(spectrum_state, ts2068 )
/* sound */
MCFG_SOUND_REPLACE("ay8912", AY8912, XTAL_14_112MHz/8) /* From Schematic; 1.764 MHz */
MCFG_SOUND_CONFIG(spectrum_ay_interface)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
/* cartridge */
MCFG_CARTSLOT_MODIFY("cart")
MCFG_CARTSLOT_EXTENSION_LIST("dck")
MCFG_CARTSLOT_NOT_MANDATORY
MCFG_CARTSLOT_LOAD(spectrum_state,timex_cart)
MCFG_CARTSLOT_UNLOAD(spectrum_state,timex_cart)
/* internal ram */
MCFG_RAM_MODIFY(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("48K")
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( uk2086, ts2068 )
MCFG_SCREEN_MODIFY("screen")
MCFG_SCREEN_REFRESH_RATE(50)
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( tc2048, spectrum )
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(tc2048_mem)
MCFG_CPU_IO_MAP(tc2048_io)
MCFG_MACHINE_RESET_OVERRIDE(spectrum_state, tc2048 )
/* video hardware */
MCFG_SCREEN_MODIFY("screen")
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_SIZE(TS2068_SCREEN_WIDTH, SPEC_SCREEN_HEIGHT)
MCFG_SCREEN_VISIBLE_AREA(0, TS2068_SCREEN_WIDTH-1, 0, SPEC_SCREEN_HEIGHT-1)
MCFG_SCREEN_UPDATE_DRIVER(spectrum_state, screen_update_tc2048)
MCFG_VIDEO_START_OVERRIDE(spectrum_state, spectrum_128 )
/* internal ram */
MCFG_RAM_MODIFY(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("48K")
MACHINE_CONFIG_END
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START(tc2048)
ROM_REGION(0x10000,"maincpu",0)
ROM_LOAD("tc2048.rom",0x0000,0x4000, CRC(f1b5fa67) SHA1(febb2d495b6eda7cdcb4074935d6e9d9f328972d))
ROM_CART_LOAD("cart", 0x0000, 0x4000, ROM_NOCLEAR | ROM_NOMIRROR | ROM_OPTIONAL)
ROM_END
ROM_START(ts2068)
ROM_REGION(0x16000,"maincpu",0)
ROM_LOAD("ts2068_h.rom",0x10000,0x4000, CRC(bf44ec3f) SHA1(1446cb2780a9dedf640404a639fa3ae518b2d8aa))
ROM_LOAD("ts2068_x.rom",0x14000,0x2000, CRC(ae16233a) SHA1(7e265a2c1f621ed365ea23bdcafdedbc79c1299c))
ROM_END
ROM_START(uk2086)
ROM_REGION(0x16000,"maincpu",0)
ROM_LOAD("uk2086_h.rom",0x10000,0x4000, CRC(5ddc0ca2) SHA1(1d525fe5cdc82ab46767f665ad735eb5363f1f51))
ROM_LOAD("ts2068_x.rom",0x14000,0x2000, CRC(ae16233a) SHA1(7e265a2c1f621ed365ea23bdcafdedbc79c1299c))
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
COMP( 1984, tc2048, spectrum, 0, tc2048, spectrum, driver_device, 0, "Timex of Portugal", "TC-2048" , 0)
COMP( 1983, ts2068, spectrum, 0, ts2068, spectrum, driver_device, 0, "Timex Sinclair", "TS-2068" , 0)
COMP( 1986, uk2086, spectrum, 0, uk2086, spectrum, driver_device, 0, "Unipolbrit", "UK-2086 ver. 1.2" , 0)
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