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author eientei95 <einstein95@users.noreply.github.com>2022-05-13 16:32:02 +1200
committer GitHub <noreply@github.com>2022-05-13 14:32:02 +1000
commit98b14fa8ae8451ccf1bb6ff6b82c1db775b9d8cf (patch)
treee56f3ac8e21b484b150cac1fd810e87375d8ac24 /src/mame/drivers
parent1c2364d77214d0be0878645796b6f458a09e6cfc (diff)
atari400.cpp: Added 2-port version of a5200, and fixed ANTIC memory size. (#9730)
New working clones -------------------- Atari 5200 (2-port)
Diffstat (limited to 'src/mame/drivers')
-rw-r--r--src/mame/drivers/atari400.cpp108
1 files changed, 84 insertions, 24 deletions
diff --git a/src/mame/drivers/atari400.cpp b/src/mame/drivers/atari400.cpp
index 7f8d61bd2b0..166d4ad1aca 100644
--- a/src/mame/drivers/atari400.cpp
+++ b/src/mame/drivers/atari400.cpp
@@ -265,6 +265,7 @@ public:
void a800pal(machine_config &config);
void a400pal(machine_config &config);
void a5200(machine_config &config);
+ void a5200a(machine_config &config);
void a800(machine_config &config);
void a1200xl(machine_config &config);
void a800xlpal(machine_config &config);
@@ -324,7 +325,7 @@ private:
//required_device<cpu_device> m_maincpu; // maincpu is already contained in atari_common_state
required_device<ram_device> m_ram;
- required_device<pia6821_device> m_pia;
+ optional_device<pia6821_device> m_pia;
optional_device<dac_bit_interface> m_dac;
required_memory_region m_region_maincpu;
optional_device<a800_cart_slot_device> m_cart;
@@ -643,7 +644,7 @@ void a400_state::a5200_mem(address_map &map)
map(0x0000, 0x3fff).ram();
map(0x4000, 0xbfff).noprw(); // ROM installed at machine start
map(0xc000, 0xcfff).rw(m_gtia, FUNC(gtia_device::read), FUNC(gtia_device::write));
- map(0xd400, 0xdfff).rw(m_antic, FUNC(antic_device::read), FUNC(antic_device::write));
+ map(0xd400, 0xd4ff).rw(m_antic, FUNC(antic_device::read), FUNC(antic_device::write));
// 0xe000-0xe7ff - Expansion?
map(0xe800, 0xefff).rw("pokey", FUNC(pokey_device::read), FUNC(pokey_device::write));
map(0xf000, 0xffff).rom();
@@ -954,6 +955,31 @@ static INPUT_PORTS_START( a5200 )
PORT_BIT(0xff, 0x72, IPT_AD_STICK_Y) PORT_SENSITIVITY(JOYSTICK_SENSITIVITY) PORT_KEYDELTA(JOYSTICK_DELTA) PORT_MINMAX(0x00,0xe4) PORT_PLAYER(4)
INPUT_PORTS_END
+
+
+
+static INPUT_PORTS_START( a5200a )
+ PORT_INCLUDE( a5200 )
+
+ PORT_MODIFY("djoy_b") /* lower/upper buttons */
+ PORT_BIT(0x04, 0x04, IPT_UNUSED)
+ PORT_BIT(0x08, 0x08, IPT_UNUSED)
+ PORT_BIT(0x40, 0x40, IPT_UNUSED)
+ PORT_BIT(0x80, 0x80, IPT_UNUSED)
+
+ PORT_MODIFY("analog_4")
+ PORT_BIT(0xff, 0x72, IPT_UNUSED)
+
+ PORT_MODIFY("analog_5")
+ PORT_BIT(0xff, 0x72, IPT_UNUSED)
+
+ PORT_MODIFY("analog_6")
+ PORT_BIT(0xff, 0x72, IPT_UNUSED)
+
+ PORT_MODIFY("analog_7")
+ PORT_BIT(0xff, 0x72, IPT_UNUSED)
+INPUT_PORTS_END
+
/***************************************************************
Atari 5200 Palette Notes:
@@ -2104,19 +2130,6 @@ void a400_state::atari_common_nodac(machine_config &config)
PALETTE(config, "palette", FUNC(a400_state::a400_palette), std::size(atari_colors) / 3);
- PIA6821(config, m_pia, 0);
- m_pia->readpa_handler().set_ioport("djoy_0_1");
- m_pia->readpb_handler().set_ioport("djoy_2_3");
- m_pia->ca2_handler().set("sio", FUNC(a8sio_device::motor_w));
- m_pia->cb2_handler().set("fdc", FUNC(atari_fdc_device::pia_cb2_w));
- m_pia->cb2_handler().append("sio", FUNC(a8sio_device::command_w));
-
- a8sio_device &sio(A8SIO(config, "sio", nullptr));
- //sio.clock_in().set("pokey", FUNC(pokey_device::bclk_w));
- sio.data_in().set("pokey", FUNC(pokey_device::sid_w));
- sio.proceed().set(m_pia, FUNC(pia6821_device::ca1_w));
- sio.interrupt().set(m_pia, FUNC(pia6821_device::cb1_w));
-
/* sound hardware */
SPEAKER(config, "speaker").front_center();
POKEY(config, m_pokey, pokey_device::FREQ_17_EXACT);
@@ -2154,6 +2167,19 @@ void a400_state::atari_common(machine_config &config)
m_antic->set_gtia_tag(m_gtia);
/* devices */
+ PIA6821(config, m_pia, 0);
+ m_pia->readpa_handler().set_ioport("djoy_0_1");
+ m_pia->readpb_handler().set_ioport("djoy_2_3");
+ m_pia->ca2_handler().set("sio", FUNC(a8sio_device::motor_w));
+ m_pia->cb2_handler().set("fdc", FUNC(atari_fdc_device::pia_cb2_w));
+ m_pia->cb2_handler().append("sio", FUNC(a8sio_device::command_w));
+
+ a8sio_device &sio(A8SIO(config, "sio", nullptr));
+ //sio.clock_in().set("pokey", FUNC(pokey_device::bclk_w));
+ sio.data_in().set("pokey", FUNC(pokey_device::sid_w));
+ sio.proceed().set(m_pia, FUNC(pia6821_device::ca1_w));
+ sio.interrupt().set(m_pia, FUNC(pia6821_device::cb1_w));
+
ATARI_FDC(config, "fdc", 0);
A800_CART_SLOT(config, "cartleft", a800_left, nullptr);
@@ -2331,7 +2357,7 @@ void a400_state::a5200(machine_config &config)
m_maincpu->set_addrmap(AS_PROGRAM, &a400_state::a5200_mem);
TIMER(config, "scantimer").configure_scanline(FUNC(a400_state::a5200_interrupt), "screen", 0, 1);
- // FIXME: should there be anything connected where other system have the fdc?
+ // Not used but exposed via expansion port
m_pokey->serin_r().set_constant(0);
m_pokey->serout_w().set_nop();
m_pokey->set_keyboard_callback(FUNC(a400_state::a5200_keypads));
@@ -2344,10 +2370,6 @@ void a400_state::a5200(machine_config &config)
ATARI_ANTIC(config, m_antic, 0);
m_antic->set_gtia_tag(m_gtia);
- m_pia->readpa_handler().set_constant(0); // FIXME: is there anything connected here
- m_pia->readpb_handler().set_constant(0); // FIXME: is there anything connected here
- m_pia->cb2_handler().set_nop(); // FIXME: is there anything connected here
-
MCFG_MACHINE_START_OVERRIDE( a400_state, a5200 )
m_screen->set_refresh_hz(antic_device::FRAME_RATE_60HZ);
@@ -2362,6 +2384,38 @@ void a400_state::a5200(machine_config &config)
RAM(config, m_ram).set_default_size("16K");
}
+/*
+From Analog Computing Magazine, issue 16 (1984-02):
+ Newer releases of the 5200 incorporate some minor hardware changes.
+ Controller ports 3 and 4 have been eliminated, making POT4 through
+ POT7, TRIG2, TRIG3, and bit 1 of CONSOL useless. A few of the
+ connector pins have been redefined. Pin 2 of the I/O expansion
+ connector now carries POKEY's Audio Out signal. Three pins on the
+ cartridge connector have changed to accomodate the new 2600 adapter.
+ The system clock, 02, is output on pin 14, isolated through a diode.
+ An alternate video input is taken from pin 24 and is also isolated
+ through a diode. Pin 30 provides an alternate audio input.
+
+ There is space on the newer boards for circuitry for a PAL (European
+ TV standard) version of the 5200. Also, on power-up, the monitor
+ program checks for the PAL version by examining the GTIA register PAL
+ after step 2 of the initialization routine. It also checks the
+ cartridge program for PAL compatibility. The byte at $BFE7 should
+ read $02 if compatible, or $00 if not. This is the only important
+ change to the monitor program. There are some additional hardware
+ changes, but none affects the machine's operation from the
+ programmer's view.
+*/
+void a400_state::a5200a(machine_config &config)
+{
+ a5200(config);
+
+ m_pokey->pot_r<4>().set_constant(0);
+ m_pokey->pot_r<5>().set_constant(0);
+ m_pokey->pot_r<6>().set_constant(0);
+ m_pokey->pot_r<7>().set_constant(0);
+}
+
/**************************************************************
*
@@ -2462,10 +2516,15 @@ ROM_END
ROM_START(a5200)
ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF)
- ROM_SYSTEM_BIOS(0, "default", "a5200")
- ROMX_LOAD( "5200.rom", 0xf800, 0x0800, CRC(4248d3e3) SHA1(6ad7a1e8c9fad486fbec9498cb48bf5bc3adc530), ROM_BIOS(0) )
- ROM_SYSTEM_BIOS(1, "alt", "a5200 (alt)")
- ROMX_LOAD( "5200a.rom", 0xf800, 0x0800, CRC(c2ba2613) SHA1(1d2a3f00109d75d2d79fecb565775eb95b7d04d5), ROM_BIOS(1) )
+ ROM_LOAD( "co19156.u8", 0xf800, 0x0800, CRC(4248d3e3) SHA1(6ad7a1e8c9fad486fbec9498cb48bf5bc3adc530) )
+ROM_END
+
+ROM_START(a5200a)
+ ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF)
+ ROM_SYSTEM_BIOS(0, "default", "2-Port")
+ ROMX_LOAD( "co19156a.a8", 0xf800, 0x0800, CRC(c2ba2613) SHA1(1d2a3f00109d75d2d79fecb565775eb95b7d04d5), ROM_BIOS(0) ) // This breaks "K-Razy Shoot-Out", "Mountain King", and "Pitfall!"
+ ROM_SYSTEM_BIOS(1, "4port", "4-Port")
+ ROMX_LOAD( "co19156.u8", 0xf800, 0x0800, CRC(4248d3e3) SHA1(6ad7a1e8c9fad486fbec9498cb48bf5bc3adc530), ROM_BIOS(1) )
ROM_END
@@ -2491,3 +2550,4 @@ COMP( 1986, a800xe, a800xl, 0, a800xl, a800xl, a400_state, empty_init,
COMP( 1987, xegs, 0, 0, xegs, a800xl, a400_state, empty_init, "Atari", "Atari XE Game System", MACHINE_IMPERFECT_GRAPHICS ) // 64k RAM
CONS( 1982, a5200, 0, 0, a5200, a5200, a400_state, empty_init, "Atari", "Atari 5200", 0)
+CONS( 1983, a5200a, a5200, 0, a5200a, a5200a, a400_state, empty_init, "Atari", "Atari 5200 (2-port)", 0)