mirror of
https://github.com/holub/mame
synced 2025-04-23 08:49:55 +03:00
Further code cleanup.
Flipped Pooyan so it behaves more like Time Pilot. Fixed Time Pilot sprite offset. Changed tutankhm video rendering to be destination-based.
This commit is contained in:
Aaron Giles
parent
b7c8c89e4e
commit
dc7e9bba99
@ -20,12 +20,14 @@
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#define MASTER_CLOCK XTAL_14_31818MHz
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static READ8_HANDLER( timeplt_portB_r );
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static WRITE8_HANDLER( timeplt_filter_w );
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static UINT8 timeplt_last_irq_state;
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static int timeplt_last_irq_state;
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/*************************************
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*
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* Initialization
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*
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*************************************/
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static SOUND_START( timeplt )
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{
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@ -34,6 +36,94 @@ static SOUND_START( timeplt )
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}
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/*************************************
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*
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* Sound timer
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*
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*************************************/
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/* The timer clock which feeds the upper 4 bits of */
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/* AY-3-8910 port A is based on the same clock */
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/* feeding the sound CPU Z80. It is a divide by */
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/* 5120, formed by a standard divide by 512, */
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/* followed by a divide by 10 using a 4 bit */
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/* bi-quinary count sequence. (See LS90 data sheet */
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/* for an example). */
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/* */
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/* Bit 4 comes from the output of the divide by 1024 */
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/* 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 */
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/* Bit 5 comes from the QC output of the LS90 producing a sequence of */
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/* 0, 0, 1, 1, 0, 0, 1, 1, 1, 0 */
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/* Bit 6 comes from the QD output of the LS90 producing a sequence of */
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/* 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 */
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/* Bit 7 comes from the QA output of the LS90 producing a sequence of */
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/* 0, 0, 0, 0, 0, 1, 1, 1, 1, 1 */
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static READ8_HANDLER( timeplt_portB_r )
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{
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static const int timeplt_timer[10] =
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{
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0x00, 0x10, 0x20, 0x30, 0x40, 0x90, 0xa0, 0xb0, 0xa0, 0xd0
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};
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return timeplt_timer[(activecpu_gettotalcycles64() / 512) % 10];
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}
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/*************************************
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*
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* Filter controls
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*
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*************************************/
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static void filter_w(int chip, int channel, int data)
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{
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int C = 0;
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if (data & 1) C += 220000; /* 220000pF = 0.220uF */
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if (data & 2) C += 47000; /* 47000pF = 0.047uF */
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filter_rc_set_RC(3*chip + channel,FLT_RC_LOWPASS, 1000,5100,0,CAP_P(C));
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}
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static WRITE8_HANDLER( timeplt_filter_w )
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{
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filter_w(0, 0, (offset >> 6) & 3);
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filter_w(0, 1, (offset >> 8) & 3);
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filter_w(0, 2, (offset >> 10) & 3);
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filter_w(1, 0, (offset >> 0) & 3);
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filter_w(1, 1, (offset >> 2) & 3);
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filter_w(1, 2, (offset >> 4) & 3);
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}
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/*************************************
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*
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* External interfaces
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*
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*************************************/
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WRITE8_HANDLER( timeplt_sh_irqtrigger_w )
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{
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if (timeplt_last_irq_state == 0 && data)
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{
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/* setting bit 0 low then high triggers IRQ on the sound CPU */
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cpunum_set_input_line_and_vector(Machine, 1,0,HOLD_LINE,0xff);
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}
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timeplt_last_irq_state = data;
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}
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/*************************************
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*
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* Memory maps
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*
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*************************************/
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static ADDRESS_MAP_START( timeplt_sound_map, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x0000, 0x2fff) AM_ROM
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AM_RANGE(0x3000, 0x33ff) AM_MIRROR(0x0c00) AM_RAM
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@ -56,6 +146,13 @@ static ADDRESS_MAP_START( locomotn_sound_map, ADDRESS_SPACE_PROGRAM, 8 )
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ADDRESS_MAP_END
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/*************************************
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*
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* Sound chip interfaces
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*
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*************************************/
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static const struct AY8910interface timeplt_ay8910_interface =
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{
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soundlatch_r,
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@ -63,66 +160,12 @@ static const struct AY8910interface timeplt_ay8910_interface =
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};
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/* The timer clock which feeds the upper 4 bits of */
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/* AY-3-8910 port A is based on the same clock */
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/* feeding the sound CPU Z80. It is a divide by */
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/* 5120, formed by a standard divide by 512, */
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/* followed by a divide by 10 using a 4 bit */
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/* bi-quinary count sequence. (See LS90 data sheet */
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/* for an example). */
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/* */
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/* Bit 4 comes from the output of the divide by 1024 */
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/* 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 */
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/* Bit 5 comes from the QC output of the LS90 producing a sequence of */
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/* 0, 0, 1, 1, 0, 0, 1, 1, 1, 0 */
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/* Bit 6 comes from the QD output of the LS90 producing a sequence of */
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/* 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 */
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/* Bit 7 comes from the QA output of the LS90 producing a sequence of */
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/* 0, 0, 0, 0, 0, 1, 1, 1, 1, 1 */
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static const int timeplt_timer[10] =
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{
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0x00, 0x10, 0x20, 0x30, 0x40, 0x90, 0xa0, 0xb0, 0xa0, 0xd0
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};
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static READ8_HANDLER( timeplt_portB_r )
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{
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return timeplt_timer[(activecpu_gettotalcycles64() / 512) % 10];
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}
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static void filter_w(int chip, int channel, int data)
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{
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int C = 0;
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if (data & 1) C += 220000; /* 220000pF = 0.220uF */
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if (data & 2) C += 47000; /* 47000pF = 0.047uF */
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filter_rc_set_RC(3*chip + channel,FLT_RC_LOWPASS, 1000,5100,0,CAP_P(C));
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}
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static WRITE8_HANDLER( timeplt_filter_w )
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{
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filter_w(0, 0, (offset >> 6) & 3);
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filter_w(0, 1, (offset >> 8) & 3);
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filter_w(0, 2, (offset >> 10) & 3);
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filter_w(1, 0, (offset >> 0) & 3);
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filter_w(1, 1, (offset >> 2) & 3);
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filter_w(1, 2, (offset >> 4) & 3);
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}
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WRITE8_HANDLER( timeplt_sh_irqtrigger_w )
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{
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if (timeplt_last_irq_state == 0 && data)
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{
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/* setting bit 0 low then high triggers IRQ on the sound CPU */
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cpunum_set_input_line_and_vector(Machine, 1,0,HOLD_LINE,0xff);
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}
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timeplt_last_irq_state = data;
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}
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/*************************************
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*
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* Machine drivers
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*
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*************************************/
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MACHINE_DRIVER_START( timeplt_sound )
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@ -329,6 +329,6 @@ ROM_END
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*
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*************************************/
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GAME( 1982, pooyan, 0, pooyan, pooyan, 0, ROT270, "Konami", "Pooyan", GAME_SUPPORTS_SAVE )
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GAME( 1982, pooyans, pooyan, pooyan, pooyan, 0, ROT270, "[Konami] (Stern license)", "Pooyan (Stern)", GAME_SUPPORTS_SAVE )
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GAME( 1982, pootan, pooyan, pooyan, pooyan, 0, ROT270, "bootleg", "Pootan", GAME_SUPPORTS_SAVE )
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GAME( 1982, pooyan, 0, pooyan, pooyan, 0, ROT90, "Konami", "Pooyan", GAME_SUPPORTS_SAVE )
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GAME( 1982, pooyans, pooyan, pooyan, pooyan, 0, ROT90, "[Konami] (Stern license)", "Pooyan (Stern)", GAME_SUPPORTS_SAVE )
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GAME( 1982, pootan, pooyan, pooyan, pooyan, 0, ROT90, "bootleg", "Pootan", GAME_SUPPORTS_SAVE )
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@ -29,6 +29,7 @@ static tilemap *bg_tilemap;
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bit 0 -- 1 kohm resistor -- RED
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***************************************************************************/
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PALETTE_INIT( pooyan )
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{
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rgb_t palette[32];
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@ -69,42 +70,71 @@ PALETTE_INIT( pooyan )
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palette_set_color(machine, i, palette[(*color_prom++ & 0x0f) + 0x10]);
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}
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/*************************************
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*
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* Tilemap info callback
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*
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*************************************/
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static TILE_GET_INFO( get_bg_tile_info )
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{
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int attr = colorram[tile_index];
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int code = videoram[tile_index];
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int color = attr & 0x0f;
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int flags = TILE_FLIPYX(attr >> 6);
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SET_TILE_INFO(0, code, color, flags);
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}
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/*************************************
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*
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* Video startup
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*
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*************************************/
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VIDEO_START( pooyan )
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{
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bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 32,32);
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}
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/*************************************
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*
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* Memory write handlers
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*
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*************************************/
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WRITE8_HANDLER( pooyan_videoram_w )
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{
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videoram[offset] = data;
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tilemap_mark_tile_dirty(bg_tilemap, offset);
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}
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WRITE8_HANDLER( pooyan_colorram_w )
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{
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colorram[offset] = data;
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tilemap_mark_tile_dirty(bg_tilemap, offset);
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}
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WRITE8_HANDLER( pooyan_flipscreen_w )
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{
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if (flip_screen != (data & 0x01))
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{
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flip_screen_set(data & 0x01);
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tilemap_mark_all_tiles_dirty(ALL_TILEMAPS);
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}
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flip_screen_set(~data & 0x01);
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}
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static TILE_GET_INFO( get_bg_tile_info )
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{
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int attr = colorram[tile_index];
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int code = videoram[tile_index] + 8 * (attr & 0x20);
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int color = attr & 0x0f;
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int flags = ((attr & 0x40) ? TILE_FLIPX : 0) | ((attr & 0x80) ? TILE_FLIPY : 0);
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SET_TILE_INFO(0, code, color, flags);
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}
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VIDEO_START( pooyan )
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{
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bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows,
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TILEMAP_TYPE_PEN, 8, 8, 32, 32);
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}
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/*************************************
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*
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* Sprite rendering
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*
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*************************************/
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static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect)
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{
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@ -112,17 +142,33 @@ static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const re
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for (offs = 0x10;offs < 0x40;offs += 2)
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{
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int sx = spriteram[offs];
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int sy = 240 - spriteram_2[offs + 1];
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int code = spriteram[offs + 1];
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int color = spriteram_2[offs] & 0x0f;
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int flipx = ~spriteram_2[offs] & 0x40;
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int flipy = spriteram_2[offs] & 0x80;
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/* Sprite flipscreen is supported by software */
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drawgfx(bitmap,machine->gfx[1],
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spriteram[offs + 1],
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spriteram_2[offs] & 0x0f,
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spriteram_2[offs] & 0x40, ~spriteram_2[offs] & 0x80,
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240-spriteram[offs], spriteram_2[offs + 1],
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code,
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color,
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flipx, flipy,
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sx, sy,
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cliprect,
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TRANSPARENCY_PEN, 0);
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}
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}
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/*************************************
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*
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* Video update
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*
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*************************************/
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VIDEO_UPDATE( pooyan )
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{
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tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
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@ -1,3 +1,11 @@
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/***************************************************************************
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Time Pilot
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driver by Nicola Salmoria
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***************************************************************************/
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#include "driver.h"
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#include "timeplt.h"
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@ -32,6 +40,7 @@ static emu_timer *scanline_timer;
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bit 0 -- not connected
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***************************************************************************/
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PALETTE_INIT( timeplt )
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{
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rgb_t palette[32];
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@ -78,37 +87,39 @@ PALETTE_INIT( timeplt )
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/***************************************************************************
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Callbacks for the TileMap code
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***************************************************************************/
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/*************************************
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*
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* Tilemap info callback
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*
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*************************************/
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static TILE_GET_INFO( get_tile_info )
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{
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UINT8 attr = colorram[tile_index];
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int attr = colorram[tile_index];
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int code = videoram[tile_index] + 8 * (attr & 0x20);
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int color = attr & 0x1f;
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int flags = TILE_FLIPYX(attr >> 6);
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tileinfo->category = (attr & 0x10) >> 4;
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SET_TILE_INFO(
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0,
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videoram[tile_index] + ((attr & 0x20) << 3),
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attr & 0x1f,
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TILE_FLIPYX(attr >> 6));
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SET_TILE_INFO(0, code, color, flags);
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}
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/***************************************************************************
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Start the video hardware emulation.
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***************************************************************************/
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/*************************************
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*
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* Per-scanline callback
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*
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*************************************/
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static TIMER_CALLBACK( scanline_interrupt )
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{
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int scanline = param;
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video_screen_update_partial(0, scanline - 1);
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/* we need to use partial updates to handle multiplexed sprites */
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video_screen_update_partial(0, scanline);
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/* only need to hit on visible scanlines */
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scanline++;
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if (scanline > machine->screen[0].visarea.max_y)
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scanline = machine->screen[0].visarea.min_y;
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@ -116,21 +127,29 @@ static TIMER_CALLBACK( scanline_interrupt )
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}
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/*************************************
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*
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* Video startup
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*
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*************************************/
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VIDEO_START( timeplt )
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{
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bg_tilemap = tilemap_create(get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,8,8,32,32);
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/* create a timer for scanline updates */
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scanline_timer = timer_alloc(scanline_interrupt, NULL);
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timer_adjust(scanline_timer, video_screen_get_time_until_pos(0, 0, 0), 0, attotime_never);
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}
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/***************************************************************************
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Memory handlers
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***************************************************************************/
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/*************************************
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*
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* Memory write handlers
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*
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*************************************/
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WRITE8_HANDLER( timeplt_videoram_w )
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{
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@ -138,17 +157,20 @@ WRITE8_HANDLER( timeplt_videoram_w )
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tilemap_mark_tile_dirty(bg_tilemap,offset);
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}
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WRITE8_HANDLER( timeplt_colorram_w )
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{
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colorram[offset] = data;
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tilemap_mark_tile_dirty(bg_tilemap,offset);
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}
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WRITE8_HANDLER( timeplt_flipscreen_w )
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{
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flip_screen_set(~data & 1);
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}
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READ8_HANDLER( timeplt_scanline_r )
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{
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return video_screen_get_vpos(0);
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@ -156,30 +178,27 @@ READ8_HANDLER( timeplt_scanline_r )
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/***************************************************************************
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Display refresh
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***************************************************************************/
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/*************************************
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*
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* Sprite rendering
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*
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*************************************/
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static void draw_sprites(running_machine *machine, mame_bitmap *bitmap,const rectangle *cliprect)
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{
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const gfx_element *gfx = machine->gfx[1];
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int offs;
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for (offs = 0x3e;offs >= 0x10;offs -= 2)
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{
|
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int code,color,sx,sy,flipx,flipy;
|
||||
int sx = spriteram[offs];
|
||||
int sy = 241 - spriteram_2[offs + 1];
|
||||
|
||||
sx = spriteram[offs];
|
||||
sy = 240 - spriteram_2[offs + 1];
|
||||
int code = spriteram[offs + 1];
|
||||
int color = spriteram_2[offs] & 0x3f;
|
||||
int flipx = ~spriteram_2[offs] & 0x40;
|
||||
int flipy = spriteram_2[offs] & 0x80;
|
||||
|
||||
code = spriteram[offs + 1];
|
||||
color = spriteram_2[offs] & 0x3f;
|
||||
flipx = ~spriteram_2[offs] & 0x40;
|
||||
flipy = spriteram_2[offs] & 0x80;
|
||||
|
||||
drawgfx(bitmap,gfx,
|
||||
drawgfx(bitmap,machine->gfx[1],
|
||||
code,
|
||||
color,
|
||||
flipx,flipy,
|
||||
@ -188,6 +207,14 @@ static void draw_sprites(running_machine *machine, mame_bitmap *bitmap,const rec
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Video update
|
||||
*
|
||||
*************************************/
|
||||
|
||||
VIDEO_UPDATE( timeplt )
|
||||
{
|
||||
tilemap_draw(bitmap,cliprect,bg_tilemap,0,0);
|
||||
|
||||
@ -22,6 +22,12 @@ static UINT8 tutankhm_flip_screen_y;
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Write handlers
|
||||
*
|
||||
*************************************/
|
||||
|
||||
WRITE8_HANDLER( tutankhm_flip_screen_x_w )
|
||||
{
|
||||
tutankhm_flip_screen_x = data & 0x01;
|
||||
@ -34,6 +40,13 @@ WRITE8_HANDLER( tutankhm_flip_screen_y_w )
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Palette management
|
||||
*
|
||||
*************************************/
|
||||
|
||||
static void get_pens(pen_t *pens)
|
||||
{
|
||||
offs_t i;
|
||||
@ -47,6 +60,13 @@ static void get_pens(pen_t *pens)
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Video startup
|
||||
*
|
||||
*************************************/
|
||||
|
||||
VIDEO_START( tutankhm )
|
||||
{
|
||||
state_save_register_global_array(junofrst_blitterdata);
|
||||
@ -55,42 +75,34 @@ VIDEO_START( tutankhm )
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Video update
|
||||
*
|
||||
*************************************/
|
||||
|
||||
VIDEO_UPDATE( tutankhm )
|
||||
{
|
||||
int xorx = tutankhm_flip_screen_x ? 255 : 0;
|
||||
int xory = tutankhm_flip_screen_y ? 255 : 0;
|
||||
pen_t pens[NUM_PENS];
|
||||
offs_t offs;
|
||||
int x, y;
|
||||
|
||||
get_pens(pens);
|
||||
|
||||
for (offs = 0; offs < videoram_size; offs++)
|
||||
|
||||
for (y = cliprect->min_y; y <= cliprect->max_y; y++)
|
||||
{
|
||||
int i;
|
||||
|
||||
UINT8 data = videoram[offs];
|
||||
|
||||
UINT8 y = offs >> 7;
|
||||
UINT8 x = offs << 1;
|
||||
|
||||
for (i = 0; i < 2; i++)
|
||||
UINT32 *dst = BITMAP_ADDR32(bitmap, y, 0);
|
||||
|
||||
for (x = cliprect->min_x; x <= cliprect->max_x; x++)
|
||||
{
|
||||
UINT8 sy = y;
|
||||
UINT8 sx = x;
|
||||
|
||||
pen_t pen = pens[data & 0x0f];
|
||||
|
||||
/* adjust for scrolling */
|
||||
if (x < 192)
|
||||
{
|
||||
sy = sy - *tutankhm_scroll;
|
||||
}
|
||||
|
||||
if (tutankhm_flip_screen_y) sy = 255 - sy;
|
||||
if (tutankhm_flip_screen_x) sx = 255 - sx;
|
||||
|
||||
*BITMAP_ADDR32(bitmap, sy, sx) = pen;
|
||||
|
||||
x = x + 1;
|
||||
data = data >> 4;
|
||||
UINT8 effx = x ^ xorx;
|
||||
UINT8 yscroll = (effx < 192) ? *tutankhm_scroll : 0;
|
||||
UINT8 effy = (y ^ xory) + yscroll;
|
||||
UINT8 vrambyte = videoram[effy * 128 + effx / 2];
|
||||
UINT8 shifted = vrambyte >> (4 * (effx % 2));
|
||||
dst[x] = pens[shifted & 0x0f];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user