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Diffstat (limited to 'src/mess/drivers/hh_pic16.c')
-rw-r--r--src/mess/drivers/hh_pic16.c171
1 files changed, 164 insertions, 7 deletions
diff --git a/src/mess/drivers/hh_pic16.c b/src/mess/drivers/hh_pic16.c
index cdca00249d6..315db7ffc64 100644
--- a/src/mess/drivers/hh_pic16.c
+++ b/src/mess/drivers/hh_pic16.c
@@ -5,6 +5,10 @@
Collection of PIC16xx/16Cxx-driven dedicated handhelds or other simple devices
+ TODO:
+ - it doesn't work, emu/cpu/pic16c5x needs some love (dev note: hack to make it
+ playable: remove the TRIS masks)
+
***************************************************************************/
#include "emu.h"
@@ -20,25 +24,137 @@ public:
hh_pic16_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
-// m_inp_matrix(*this, "IN"),
- m_speaker(*this, "speaker")
+ m_inp_matrix(*this, "IN"),
+ m_speaker(*this, "speaker"),
+ m_display_wait(33),
+ m_display_maxy(1),
+ m_display_maxx(0)
{ }
// devices
required_device<cpu_device> m_maincpu;
-// optional_ioport_array<3> m_inp_matrix; // max 3
+ optional_ioport_array<2> m_inp_matrix; // max 2
optional_device<speaker_sound_device> m_speaker;
+ // misc common
+ UINT8 m_b;
+ UINT8 m_c;
+
virtual void machine_start();
+
+ // display common
+ int m_display_wait;
+ int m_display_maxy;
+ int m_display_maxx;
+
+ UINT32 m_display_state[0x20];
+ UINT32 m_display_cache[0x20];
+ UINT8 m_display_decay[0x20][0x20];
+ UINT16 m_7seg_mask[0x20];
+
+ TIMER_DEVICE_CALLBACK_MEMBER(display_decay_tick);
+ void display_update();
+ void display_matrix(int maxx, int maxy, UINT32 setx, UINT32 sety);
+
+ // game-specific handlers
+ DECLARE_WRITE8_MEMBER(maniac_output_w);
};
void hh_pic16_state::machine_start()
{
+ // zerofill
+ memset(m_display_state, 0, sizeof(m_display_state));
+ memset(m_display_cache, 0, sizeof(m_display_cache));
+ memset(m_display_decay, 0, sizeof(m_display_decay));
+ memset(m_7seg_mask, 0, sizeof(m_7seg_mask));
+
+ m_b = 0;
+ m_c = 0;
+
+ // register for savestates
+ save_item(NAME(m_display_maxy));
+ save_item(NAME(m_display_maxx));
+ save_item(NAME(m_display_wait));
+
+ save_item(NAME(m_display_state));
+ save_item(NAME(m_display_cache));
+ save_item(NAME(m_display_decay));
+ save_item(NAME(m_7seg_mask));
+
+ save_item(NAME(m_b));
+ save_item(NAME(m_c));
}
+/***************************************************************************
+
+ Helper Functions
+
+***************************************************************************/
+
+// The device may strobe the outputs very fast, it is unnoticeable to the user.
+// To prevent flickering here, we need to simulate a decay.
+
+void hh_pic16_state::display_update()
+{
+ UINT32 active_state[0x20];
+
+ for (int y = 0; y < m_display_maxy; y++)
+ {
+ active_state[y] = 0;
+
+ for (int x = 0; x < m_display_maxx; x++)
+ {
+ // turn on powered segments
+ if (m_display_state[y] >> x & 1)
+ m_display_decay[y][x] = m_display_wait;
+
+ // determine active state
+ int ds = (m_display_decay[y][x] != 0) ? 1 : 0;
+ active_state[y] |= (ds << x);
+ }
+ }
+
+ // on difference, send to output
+ for (int y = 0; y < m_display_maxy; y++)
+ if (m_display_cache[y] != active_state[y])
+ {
+ if (m_7seg_mask[y] != 0)
+ output_set_digit_value(y, active_state[y] & m_7seg_mask[y]);
+
+ const int mul = (m_display_maxx <= 10) ? 10 : 100;
+ for (int x = 0; x < m_display_maxx; x++)
+ output_set_lamp_value(y * mul + x, active_state[y] >> x & 1);
+ }
+
+ memcpy(m_display_cache, active_state, sizeof(m_display_cache));
+}
+
+TIMER_DEVICE_CALLBACK_MEMBER(hh_pic16_state::display_decay_tick)
+{
+ // slowly turn off unpowered segments
+ for (int y = 0; y < m_display_maxy; y++)
+ for (int x = 0; x < m_display_maxx; x++)
+ if (!(m_display_state[y] >> x & 1) && m_display_decay[y][x] != 0)
+ m_display_decay[y][x]--;
+
+ display_update();
+}
+
+void hh_pic16_state::display_matrix(int maxx, int maxy, UINT32 setx, UINT32 sety)
+{
+ m_display_maxx = maxx;
+ m_display_maxy = maxy;
+
+ // update current state
+ UINT32 mask = (1 << maxx) - 1;
+ for (int y = 0; y < maxy; y++)
+ m_display_state[y] = (sety >> y & 1) ? (setx & mask) : 0;
+
+ display_update();
+}
@@ -51,21 +167,52 @@ void hh_pic16_state::machine_start()
/***************************************************************************
Ideal Maniac, by Ralph Baer
- * PIC1655-036
+ * PIC1655A-036
***************************************************************************/
+WRITE8_MEMBER(hh_pic16_state::maniac_output_w)
+{
+ // B,C: outputs
+ offset -= PIC16C5x_PORTB;
+ if (offset)
+ m_c = data;
+ else
+ m_b = data;
+
+ // d7: speaker out/enable
+ m_speaker->level_w((m_b & m_c) >> 7 & 1);
+
+ // d0-d6: 7seg
+ m_display_maxx = 7;
+ m_display_maxy = 2;
+
+ m_7seg_mask[offset] = 0x7f;
+ m_display_state[offset] = ~data & 0x7f;
+ display_update();
+}
+
static INPUT_PORTS_START( maniac )
+ PORT_START("IN.0") // port A
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) // bottom-right
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) // upper-right
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) // bottom-left
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) // upper-left
INPUT_PORTS_END
static MACHINE_CONFIG_START( maniac, hh_pic16_state )
/* basic machine hardware */
- MCFG_CPU_ADD("maincpu", PIC16C55, 500000)
+ MCFG_CPU_ADD("maincpu", PIC16C55, 850000) // RC osc. R=13.4K, C=470pf, but unknown RC curve - measured 800-890kHz
+ MCFG_PIC16C5x_READ_A_CB(IOPORT("IN.0"))
+ MCFG_PIC16C5x_WRITE_B_CB(WRITE8(hh_pic16_state, maniac_output_w))
+ MCFG_PIC16C5x_WRITE_C_CB(WRITE8(hh_pic16_state, maniac_output_w))
+ MCFG_PIC16C5x_SET_CONFIG(0) // ?
+ MCFG_TIMER_DRIVER_ADD_PERIODIC("display_decay", hh_pic16_state, display_decay_tick, attotime::from_msec(1))
MCFG_DEFAULT_LAYOUT(layout_maniac)
/* no video! */
@@ -78,10 +225,20 @@ MACHINE_CONFIG_END
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
ROM_START( maniac )
ROM_REGION( 0x0800, "maincpu", 0 )
- ROM_LOAD( "1655-036", 0x0000, 0x0400, CRC(a96f7011) SHA1(e97ae44d3c1e74c7e1024bb0bdab03eecdc9f827) )
+ ROM_LOAD( "pic1655a-036", 0x0000, 0x0400, CRC(a96f7011) SHA1(e97ae44d3c1e74c7e1024bb0bdab03eecdc9f827) )
ROM_END
-CONS( 1979, maniac, 0, 0, maniac, maniac, driver_device, 0, "Ideal", "Maniac", GAME_SUPPORTS_SAVE | GAME_NOT_WORKING )
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY, FULLNAME, FLAGS */
+CONS( 1979, maniac, 0, 0, maniac, maniac, driver_device, 0, "Ideal", "Maniac", GAME_SUPPORTS_SAVE | GAME_NOT_WORKING )