mirror of
https://github.com/holub/mame
synced 2025-06-04 03:46:29 +03:00
small cleanup
This commit is contained in:
hap
parent
a65f0f36a3
commit
9bb341b6b7
@ -109,9 +109,6 @@ public:
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required_shared_ptr<UINT16> m_paletteram;
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/* internal states */
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UINT8 m_misc_io_data[0x10]; /* holds values written to the I/O chip */
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/* protection-related tracking */
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segac2_prot_delegate m_prot_func; /* emulation of protection chip */
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UINT8 m_prot_write_buf; /* remembers what was written */
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@ -172,10 +169,10 @@ public:
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DECLARE_WRITE16_MEMBER( segac2_upd7759_w );
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DECLARE_READ16_MEMBER( palette_r );
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DECLARE_WRITE16_MEMBER( palette_w );
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DECLARE_WRITE16_MEMBER( control_w );
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DECLARE_READ16_MEMBER( prot_r );
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DECLARE_WRITE16_MEMBER( prot_w );
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DECLARE_WRITE16_MEMBER( counter_timer_w );
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DECLARE_WRITE8_MEMBER( control_w );
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DECLARE_READ8_MEMBER( prot_r );
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DECLARE_WRITE8_MEMBER( prot_w );
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DECLARE_WRITE8_MEMBER( counter_timer_w );
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DECLARE_READ16_MEMBER( printer_r );
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DECLARE_WRITE16_MEMBER( print_club_camera_w );
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DECLARE_READ16_MEMBER(ichirjbl_prot_r);
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@ -220,7 +217,6 @@ public:
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MACHINE_START_MEMBER(segac2_state,segac2)
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{
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save_item(NAME(m_misc_io_data));
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save_item(NAME(m_prot_write_buf));
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save_item(NAME(m_prot_read_buf));
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@ -476,11 +472,8 @@ WRITE8_MEMBER(segac2_state::io_porth_w)
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******************************************************************************/
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WRITE16_MEMBER(segac2_state::control_w )
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WRITE8_MEMBER(segac2_state::control_w)
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{
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/* skip if not LSB */
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if (!ACCESSING_BITS_0_7)
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return;
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data &= 0x0f;
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/* bit 0 controls display enable */
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@ -511,7 +504,7 @@ WRITE16_MEMBER(segac2_state::control_w )
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******************************************************************************/
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/* protection chip reads */
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READ16_MEMBER(segac2_state::prot_r )
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READ8_MEMBER(segac2_state::prot_r)
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{
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if (LOG_PROTECTION) logerror("%06X:protection r=%02X\n", space.device().safe_pcbase(), m_prot_read_buf);
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return m_prot_read_buf | 0xf0;
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@ -519,16 +512,12 @@ READ16_MEMBER(segac2_state::prot_r )
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/* protection chip writes */
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WRITE16_MEMBER(segac2_state::prot_w )
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WRITE8_MEMBER(segac2_state::prot_w)
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{
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int new_sp_palbase = (data >> 2) & 3;
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int new_bg_palbase = data & 3;
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int table_index;
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/* only works for the LSB */
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if (!ACCESSING_BITS_0_7)
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return;
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/* compute the table index */
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table_index = (m_prot_write_buf << 4) | m_prot_read_buf;
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@ -562,42 +551,38 @@ WRITE16_MEMBER(segac2_state::prot_w )
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******************************************************************************/
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WRITE16_MEMBER(segac2_state::counter_timer_w )
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WRITE8_MEMBER(segac2_state::counter_timer_w)
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{
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/* only LSB matters */
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if (ACCESSING_BITS_0_7)
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/*int value = data & 1;*/
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switch (data & 0x1e)
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{
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/*int value = data & 1;*/
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switch (data & 0x1e)
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{
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case 0x00: /* player 1 start/stop */
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case 0x02: /* player 2 start/stop */
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case 0x04: /* ??? */
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case 0x06: /* ??? */
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case 0x08: /* player 1 game timer? */
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case 0x0a: /* player 2 game timer? */
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case 0x0c: /* ??? */
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case 0x0e: /* ??? */
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break;
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case 0x00: /* player 1 start/stop */
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case 0x02: /* player 2 start/stop */
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case 0x04: /* ??? */
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case 0x06: /* ??? */
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case 0x08: /* player 1 game timer? */
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case 0x0a: /* player 2 game timer? */
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case 0x0c: /* ??? */
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case 0x0e: /* ??? */
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break;
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case 0x10: /* coin counter */
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// coin_counter_w(space.machine(), 0,1);
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// coin_counter_w(space.machine(), 0,0);
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break;
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case 0x10: /* coin counter */
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// coin_counter_w(space.machine(), 0,1);
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// coin_counter_w(space.machine(), 0,0);
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break;
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case 0x12: /* set coinage info -- followed by two 4-bit values */
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break;
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case 0x12: /* set coinage info -- followed by two 4-bit values */
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break;
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case 0x14: /* game timer? (see Tant-R) */
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case 0x16: /* intro timer? (see Tant-R) */
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case 0x18: /* ??? */
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case 0x1a: /* ??? */
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case 0x1c: /* ??? */
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break;
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case 0x14: /* game timer? (see Tant-R) */
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case 0x16: /* intro timer? (see Tant-R) */
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case 0x18: /* ??? */
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case 0x1a: /* ??? */
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case 0x1c: /* ??? */
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break;
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case 0x1e: /* reset */
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break;
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}
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case 0x1e: /* reset */
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break;
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}
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}
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@ -610,12 +595,12 @@ WRITE16_MEMBER(segac2_state::counter_timer_w )
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******************************************************************************/
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READ16_MEMBER(segac2_state::printer_r )
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READ16_MEMBER(segac2_state::printer_r)
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{
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return m_cam_data;
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}
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WRITE16_MEMBER(segac2_state::print_club_camera_w )
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WRITE16_MEMBER(segac2_state::print_club_camera_w)
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{
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m_cam_data = data;
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}
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@ -633,11 +618,11 @@ WRITE16_MEMBER(segac2_state::print_club_camera_w )
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static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, segac2_state )
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AM_RANGE(0x000000, 0x1fffff) AM_ROM
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AM_RANGE(0x800000, 0x800001) AM_MIRROR(0x13fdfe) AM_READWRITE(prot_r, prot_w)
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AM_RANGE(0x800200, 0x800201) AM_MIRROR(0x13fdfe) AM_WRITE(control_w)
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AM_RANGE(0x800000, 0x800001) AM_MIRROR(0x13fdfe) AM_READWRITE8(prot_r, prot_w, 0x00ff)
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AM_RANGE(0x800200, 0x800201) AM_MIRROR(0x13fdfe) AM_WRITE8(control_w, 0x00ff)
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AM_RANGE(0x840000, 0x84001f) AM_MIRROR(0x13fee0) AM_DEVREADWRITE8("io", sega_315_5296_device, read, write, 0x00ff)
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AM_RANGE(0x840100, 0x840107) AM_MIRROR(0x13fef8) AM_DEVREADWRITE8("ymsnd", ym3438_device, read, write, 0x00ff)
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AM_RANGE(0x880100, 0x880101) AM_MIRROR(0x13fefe) AM_WRITE(counter_timer_w)
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AM_RANGE(0x880100, 0x880101) AM_MIRROR(0x13fefe) AM_WRITE8(counter_timer_w, 0x00ff)
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AM_RANGE(0x8c0000, 0x8c0fff) AM_MIRROR(0x13f000) AM_READWRITE(palette_r, palette_w) AM_SHARE("paletteram")
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AM_RANGE(0xc00000, 0xc0001f) AM_MIRROR(0x18ff00) AM_DEVREADWRITE("gen_vdp", sega315_5313_device, vdp_r, vdp_w)
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AM_RANGE(0xe00000, 0xe0ffff) AM_MIRROR(0x1f0000) AM_RAM AM_SHARE("nvram")
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