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-rw-r--r--src/mess/drivers/wizatron.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/src/mess/drivers/wizatron.c b/src/mess/drivers/wizatron.c
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index 00000000000..3633c8cb8ff
--- /dev/null
+++ b/src/mess/drivers/wizatron.c
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+// license:BSD-3-Clause
+// copyright-holders:hap
+/***************************************************************************
+
+ Texas Instruments WIZ-A-TRON
+ * TMC0907NL ZA0379 (die labeled 0970F-07B)
+
+ Other handhelds assumed to be on similar hardware:
+ - Math Magic
+ - Little Professor
+
+
+ TODO:
+ - the rom goes in an infinite loop very soon, cpu missing emulation?
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/tms0980/tms0980.h"
+
+// master clock is cpu internal, the value below is an approximation
+#define MASTER_CLOCK (250000)
+
+
+class wizatron_state : public driver_device
+{
+public:
+ wizatron_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu")
+ { }
+
+ required_device<cpu_device> m_maincpu;
+
+ UINT16 m_r;
+ UINT16 m_o;
+
+ DECLARE_READ8_MEMBER(read_k);
+ DECLARE_WRITE16_MEMBER(write_o);
+ DECLARE_WRITE16_MEMBER(write_r);
+
+ virtual void machine_start();
+};
+
+
+/***************************************************************************
+
+ I/O
+
+***************************************************************************/
+
+READ8_MEMBER(wizatron_state::read_k)
+{
+ UINT8 k = 0;
+
+ return k;
+}
+
+WRITE16_MEMBER(wizatron_state::write_r)
+{
+ m_r = data;
+}
+
+WRITE16_MEMBER(wizatron_state::write_o)
+{
+ m_o = data;
+}
+
+
+
+/***************************************************************************
+
+ Inputs
+
+***************************************************************************/
+
+static INPUT_PORTS_START( wizatron )
+INPUT_PORTS_END
+
+
+
+/***************************************************************************
+
+ Machine Config
+
+***************************************************************************/
+
+void wizatron_state::machine_start()
+{
+ m_r = 0;
+ m_o = 0;
+
+ save_item(NAME(m_r));
+ save_item(NAME(m_o));
+}
+
+
+static const UINT16 wizatron_output_pla[0x20] =
+{
+ /* O output PLA configuration currently unknown */
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+};
+
+
+static MACHINE_CONFIG_START( wizatron, wizatron_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", TMS0970, MASTER_CLOCK)
+ MCFG_TMS1XXX_OUTPUT_PLA(wizatron_output_pla)
+ MCFG_TMS1XXX_READ_K(READ8(wizatron_state, read_k))
+ MCFG_TMS1XXX_WRITE_O(WRITE16(wizatron_state, write_o))
+ MCFG_TMS1XXX_WRITE_R(WRITE16(wizatron_state, write_r))
+
+ /* no video! */
+
+ /* no sound! */
+MACHINE_CONFIG_END
+
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START( wizatron )
+ ROM_REGION( 0x0400, "maincpu", ROMREGION_ERASE00 )
+ ROM_LOAD( "za0379", 0x0000, 0x0400, CRC(5a6af094) SHA1(b1f27e1f13f4db3b052dd50fb08dbf9c4d8db26e) )
+ROM_END
+
+
+CONS( 1977, wizatron, 0, 0, wizatron, wizatron, driver_device, 0, "Texas Instruments", "Wiz-A-Tron", GAME_NOT_WORKING | GAME_SUPPORTS_SAVE | GAME_NO_SOUND_HW )