(nw) instantm : let's talk.

src/mame/drivers/instantm.cpp

@@ -1,6 +1,6 @@
 // license:BSD-3-Clause
 // copyright-holders:David Haywood
-/*
+/******************************************************************************************************************************
 
 has a sticker marked
 Part # 04-0008
@@ -14,33 +14,91 @@ Serial# : 0115
 There were several different designs for this, it's possible they used
 different speech roms etc.
 
+ToDo:
+- work out how the cpus communicate (there's an interrupt handler in main cpu)
+- clear up the speech
+- inputs
+- mechanical matters (camera, printer, etc)
 
-*/
+At the moment it simply outputs all the speech strings, one after the other, then stops.
+
+*****************************************************************************************************************************/
 
 #include "emu.h"
 #include "cpu/z80/z80.h"
+#include "machine/clock.h"
+#include "sound/dac.h"
+#include "sound/volt_reg.h"
+#include "speaker.h"
 
 class instantm_state : public driver_device
 {
 public:
 	instantm_state(const machine_config &mconfig, device_type type, const char *tag)
-		: driver_device(mconfig, type, tag),
+		: driver_device(mconfig, type, tag)
-		m_maincpu(*this, "maincpu")
+		, m_maincpu(*this, "maincpu")
 	{ }
 
+	DECLARE_READ8_MEMBER(port01_r);
+	DECLARE_WRITE8_MEMBER(port01_w);
+	DECLARE_WRITE_LINE_MEMBER(clock_w);
+
+private:
+	u8 m_port01;
+	bool m_clock_en;
 	virtual void machine_start() override;
 	virtual void machine_reset() override;
 	required_device<cpu_device> m_maincpu;
 };
 
+// return instruction from main cpu
+READ8_MEMBER( instantm_state::port01_r )
+{
+	return m_port01;
+}
+
+// tell maincpu the speech is done
+WRITE8_MEMBER( instantm_state::port01_w )
+{
+	// bump to next bit of speech for now
+	if ((m_port01 & 15) < 15)
+		m_port01++;
+	else
+		m_clock_en = false;
+}
+
+// clock out the speech bytes
+WRITE_LINE_MEMBER( instantm_state::clock_w )
+{
+	if (m_clock_en)
+		m_port01 ^= 0x80;
+}
 
 
-static ADDRESS_MAP_START( instantm_map, AS_PROGRAM, 8, instantm_state )
+
-	AM_RANGE(0x0000, 0x7fff) AM_ROM
+static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, instantm_state )
+	AM_RANGE(0x0000, 0x1fff) AM_ROM
+	AM_RANGE(0x4000, 0x47ff) AM_RAM
+	AM_RANGE(0x8000, 0x8000) //AM_WRITE
+	AM_RANGE(0xc000, 0xc000) //AM_WRITE
+	AM_RANGE(0xc400, 0xc400) //AM_WRITE
+	AM_RANGE(0xc800, 0xc800) //AM_WRITE
+	AM_RANGE(0xcc00, 0xcc00) //AM_WRITE
+	AM_RANGE(0xec00, 0xec00) //AM_READ
+	AM_RANGE(0xf000, 0xf000) //AM_READ
+	AM_RANGE(0xf400, 0xf400) //AM_READ
+	AM_RANGE(0xfc00, 0xfc00) //AM_READ
 ADDRESS_MAP_END
 
-static ADDRESS_MAP_START( instantm_submap, AS_PROGRAM, 8, instantm_state )
+// doesn't use ram
-	AM_RANGE(0x0000, 0x7fff) AM_ROM
+static ADDRESS_MAP_START( sub_map, AS_PROGRAM, 8, instantm_state )
+	AM_RANGE(0x0000, 0xffff) AM_ROM
+	AM_RANGE(0x0000, 0x0000) AM_DEVWRITE("dac", dac_byte_interface, write)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sub_io, AS_PROGRAM, 8, instantm_state )
+	ADDRESS_MAP_GLOBAL_MASK(0xff)
+	AM_RANGE(0x01, 0x01) AM_READWRITE(port01_r,port01_w)
 ADDRESS_MAP_END
 
 static INPUT_PORTS_START( instantm )
@@ -53,18 +111,29 @@ void instantm_state::machine_start()
 
 void instantm_state::machine_reset()
 {
+	m_port01 = 0xf0; // bit 4 low sends subcpu to a test mode
+	m_clock_en = true;
 }
 
 // OSC1 = XTAL_3_579545MHz
 
 static MACHINE_CONFIG_START( instantm )
-
 	/* basic machine hardware */
-	MCFG_CPU_ADD("maincpu", Z80,XTAL_3_579545MHz)
+	MCFG_CPU_ADD("maincpu", Z80, XTAL_3_579545MHz)
-	MCFG_CPU_PROGRAM_MAP(instantm_map)
+	MCFG_CPU_PROGRAM_MAP(main_map)
 
-	MCFG_CPU_ADD("subcpu", Z80,XTAL_3_579545MHz)
+	MCFG_CPU_ADD("subcpu", Z80, XTAL_3_579545MHz)
-	MCFG_CPU_PROGRAM_MAP(instantm_submap)
+	MCFG_CPU_PROGRAM_MAP(sub_map)
+	MCFG_CPU_IO_MAP(sub_io)
+
+	// all guesswork
+	MCFG_DEVICE_ADD("voice_clock", CLOCK, 24000)
+	MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(instantm_state, clock_w))
+
+	MCFG_SPEAKER_STANDARD_MONO("speaker")
+	MCFG_SOUND_ADD("dac", MC1408, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5)
+	MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
+	MCFG_SOUND_ROUTE_EX(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
 MACHINE_CONFIG_END
 
 
@@ -78,4 +147,4 @@ ROM_START( instantm )
 ROM_END
 
 
-GAME( 199?, instantm,  0,    instantm, instantm, instantm_state,  0, ROT0, "Capcom / Polaroid", "Polaroid Instant Memories", MACHINE_IS_SKELETON )
+GAME( 199?, instantm,  0,    instantm, instantm, instantm_state,  0, ROT0, "Capcom / Polaroid", "Polaroid Instant Memories", MACHINE_IS_SKELETON_MECHANICAL )