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-rw-r--r--src/mame/drivers/craft.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/src/mame/drivers/craft.c b/src/mame/drivers/craft.c
new file mode 100644
index 00000000000..34411a3f335
--- /dev/null
+++ b/src/mame/drivers/craft.c
@@ -0,0 +1,269 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/*\
+* * Linus Akesson's "Craft"
+* *
+* * Driver by MooglyGuy
+\*/
+
+#include "emu.h"
+#include "cpu/avr8/avr8.h"
+#include "sound/dac.h"
+
+#define VERBOSE_LEVEL (0)
+
+#define ENABLE_VERBOSE_LOG (0)
+
+#define MASTER_CLOCK 20000000
+
+#define VISIBLE_CYCLES 480
+#define HSYNC_CYCLES 155
+#define LINE_CYCLES (VISIBLE_CYCLES + HSYNC_CYCLES)
+#define VISIBLE_LINES 480
+#define VSYNC_LINES 45
+#define LINES_PER_FRAME (VISIBLE_LINES + VSYNC_LINES)
+#define CYCLES_PER_FRAME (LINES_PER_FRAME * LINE_CYCLES)
+#define PIXELS_PER_FRAME (CYCLES_PER_FRAME)
+
+/****************************************************\
+* I/O devices *
+\****************************************************/
+
+class craft_state : public driver_device
+{
+public:
+ craft_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_dac(*this, "dac")
+ {
+ }
+
+ void video_update();
+
+ virtual void machine_start();
+
+ UINT32 m_last_cycles;
+ UINT64 m_frame_start_cycle;
+
+ UINT8 m_port_b;
+ UINT8 m_port_c;
+ UINT8 m_port_d;
+
+ UINT8 m_latched_color;
+ UINT8 m_pixels[PIXELS_PER_FRAME];
+
+ required_device<avr8_device> m_maincpu;
+
+ DECLARE_READ8_MEMBER(port_r);
+ DECLARE_WRITE8_MEMBER(port_w);
+ DECLARE_DRIVER_INIT(craft);
+ virtual void machine_reset();
+ UINT32 screen_update_craft(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+ inline void verboselog(int n_level, const char *s_fmt, ...) ATTR_PRINTF(3,4);
+ required_device<dac_device> m_dac;
+};
+
+inline void craft_state::verboselog(int n_level, const char *s_fmt, ...)
+{
+#if ENABLE_VERBOSE_LOG
+ if( VERBOSE_LEVEL >= n_level )
+ {
+ va_list v;
+ char buf[ 32768 ];
+ va_start( v, s_fmt );
+ vsprintf( buf, s_fmt, v );
+ va_end( v );
+ logerror( "%08x: %s", m_maincpu->safe_pc(), buf );
+ }
+#endif
+}
+
+void craft_state::machine_start()
+{
+}
+
+READ8_MEMBER(craft_state::port_r)
+{
+ switch( offset )
+ {
+ case 0x00: // Port A
+ case 0x01: // Port B
+ case 0x02: // Port C
+ case 0x03: // Port D
+ // Unhandled
+ return 0x00;
+ }
+
+ return 0;
+}
+
+WRITE8_MEMBER(craft_state::port_w)
+{
+ switch( offset )
+ {
+ case AVR8_IO_PORTA: // Port A
+ // Unhandled
+ break;
+
+ case AVR8_IO_PORTB: // Port B
+ {
+ UINT8 old_port_b = m_port_b;
+ UINT8 pins = data;
+ UINT8 changed = pins ^ old_port_b;
+ if(pins & changed & 0x02)
+ {
+ m_frame_start_cycle = m_maincpu->get_elapsed_cycles();
+ video_update();
+ }
+ if(changed & 0x08)
+ {
+ video_update();
+ m_latched_color = (pins & 0x08) ? (m_port_c & 0x3f) : 0x3f;
+ }
+ m_port_b = data;
+ break;
+ }
+
+ case AVR8_IO_PORTC: // Port C
+ video_update();
+ m_port_c = data;
+ m_latched_color = m_port_c;
+ break;
+
+ case AVR8_IO_PORTD: // Port D
+ {
+ m_port_d = data;
+ UINT8 audio_sample = (data & 0x02) | ((data & 0xf4) >> 2);
+ m_dac->write_unsigned8(audio_sample << 1);
+ break;
+ }
+ }
+}
+
+void craft_state::video_update()
+{
+ UINT64 cycles = m_maincpu->get_elapsed_cycles();
+ UINT32 frame_cycles = (UINT32)(cycles - m_frame_start_cycle);
+
+ if (m_last_cycles < frame_cycles)
+ {
+ for (UINT32 pixidx = m_last_cycles; pixidx < frame_cycles && pixidx < PIXELS_PER_FRAME; pixidx++)
+ {
+ m_pixels[pixidx] = m_latched_color;
+ }
+ }
+ else
+ {
+ UINT32 end_clear = sizeof(m_pixels) - m_last_cycles;
+ UINT32 start_clear = frame_cycles;
+ end_clear = (end_clear > PIXELS_PER_FRAME) ? (PIXELS_PER_FRAME - m_last_cycles) : end_clear;
+ start_clear = (start_clear > PIXELS_PER_FRAME) ? PIXELS_PER_FRAME : start_clear;
+ if (m_last_cycles < PIXELS_PER_FRAME)
+ {
+ memset(m_pixels + m_last_cycles, 0, end_clear);
+ }
+ if (start_clear < PIXELS_PER_FRAME)
+ {
+ memset(m_pixels, 0, start_clear);
+ }
+ }
+
+ m_last_cycles = frame_cycles;
+}
+
+/****************************************************\
+* Address maps *
+\****************************************************/
+
+static ADDRESS_MAP_START( craft_prg_map, AS_PROGRAM, 8, craft_state )
+ AM_RANGE(0x0000, 0x1fff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( craft_data_map, AS_DATA, 8, craft_state )
+ AM_RANGE(0x0100, 0x04ff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( craft_io_map, AS_IO, 8, craft_state )
+ AM_RANGE(AVR8_IO_PORTA, AVR8_IO_PORTD) AM_READWRITE( port_r, port_w )
+ADDRESS_MAP_END
+
+/****************************************************\
+* Input ports *
+\****************************************************/
+
+static INPUT_PORTS_START( craft )
+ PORT_START("MAIN")
+ PORT_BIT(0xff, IP_ACTIVE_HIGH, IPT_UNUSED)
+INPUT_PORTS_END
+
+/****************************************************\
+* Video hardware *
+\****************************************************/
+
+UINT32 craft_state::screen_update_craft(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+ for(int y = 0; y < LINES_PER_FRAME; y++)
+ {
+ UINT32 *line = &bitmap.pix32(y);
+ for(int x = 0; x < LINE_CYCLES; x++)
+ {
+ UINT8 pixel = m_pixels[y * LINE_CYCLES + x];
+ UINT8 r = 0x55 * ((pixel & 0x30) >> 4);
+ UINT8 g = 0x55 * ((pixel & 0x0c) >> 2);
+ UINT8 b = 0x55 * (pixel & 0x03);
+ line[x] = 0xff000000 | (r << 16) | (g << 8) | b;
+ }
+ }
+ return 0;
+}
+
+/****************************************************\
+* Machine definition *
+\****************************************************/
+
+DRIVER_INIT_MEMBER(craft_state,craft)
+{
+}
+
+void craft_state::machine_reset()
+{
+ m_dac->write_unsigned8(0x00);
+
+ m_frame_start_cycle = 0;
+ m_last_cycles = 0;
+}
+
+static MACHINE_CONFIG_START( craft, craft_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", ATMEGA88, MASTER_CLOCK)
+ MCFG_CPU_PROGRAM_MAP(craft_prg_map)
+ MCFG_CPU_DATA_MAP(craft_data_map)
+ MCFG_CPU_IO_MAP(craft_io_map)
+ MCFG_CPU_AVR8_EEPROM("eeprom")
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(59.99)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(1429)) /* accurate */
+ MCFG_SCREEN_SIZE(635, 525)
+ MCFG_SCREEN_VISIBLE_AREA(47, 526, 36, 515)
+ MCFG_SCREEN_UPDATE_DRIVER(craft_state, screen_update_craft)
+ MCFG_PALETTE_ADD("palette", 0x1000)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("avr8")
+ MCFG_SOUND_ADD("dac", DAC, 0)
+ MCFG_SOUND_ROUTE(0, "avr8", 1.00)
+MACHINE_CONFIG_END
+
+ROM_START( craft )
+ ROM_REGION( 0x2000, "maincpu", 0 ) /* Main program store */
+ ROM_LOAD( "craft.bin", 0x0000, 0x2000, CRC(2e6f9ad2) SHA1(75e495bf18395d74289ca7ee2649622fc4010457) )
+ ROM_REGION( 0x200, "eeprom", 0 ) /* on-die eeprom */
+ ROM_LOAD( "eeprom.raw", 0x0000, 0x0200, CRC(e18a2af9) SHA1(81fc6f2d391edfd3244870214fac37929af0ac0c) )
+ROM_END
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
+CONS(2008, craft, 0, 0, craft, craft, craft_state, craft, "Linus Akesson", "Craft", MACHINE_NOT_WORKING)