Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-25 09:50:04 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

stuntair: Add 74LS259, NVRAM and watchdog timer; attempt at improving sound communication (nw)

Browse Source
This commit is contained in:
AJR 2017-09-11 22:01:09 -04:00
parent 5476bc8f7e
commit c686b7c413
1 changed files with 34 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
src/mame/drivers/stuntair.cpp
View File

@ -81,7 +81,10 @@ Bprom dump by f205v
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/74259.h"
#include "machine/gen_latch.h"
#include "machine/nvram.h"
#include "machine/watchdog.h"
#include "sound/ay8910.h"
#include "screen.h"
#include "speaker.h"
@ -127,9 +130,9 @@ public:
DECLARE_WRITE8_MEMBER(stuntair_bgram_w);
DECLARE_WRITE8_MEMBER(stuntair_bgattrram_w);
DECLARE_WRITE8_MEMBER(stuntair_bgxscroll_w);
DECLARE_WRITE8_MEMBER(stuntair_nmienable_w);
DECLARE_WRITE8_MEMBER(stuntair_spritebank0_w);
DECLARE_WRITE8_MEMBER(stuntair_spritebank1_w);
DECLARE_WRITE_LINE_MEMBER(nmi_enable_w);
DECLARE_WRITE_LINE_MEMBER(spritebank0_w);
DECLARE_WRITE_LINE_MEMBER(spritebank1_w);
DECLARE_WRITE8_MEMBER(stuntair_coin_w);
DECLARE_WRITE8_MEMBER(stuntair_sound_w);
DECLARE_WRITE8_MEMBER(ay8910_portb_w);
@ -274,25 +277,22 @@ WRITE8_MEMBER( stuntair_state::stuntair_bgxscroll_w )
}
WRITE8_MEMBER(stuntair_state::stuntair_spritebank0_w)
WRITE_LINE_MEMBER(stuntair_state::spritebank0_w)
{
m_spritebank0 = data&0x01;
// other bits are unused
m_spritebank0 = state;
}
WRITE8_MEMBER(stuntair_state::stuntair_spritebank1_w)
WRITE_LINE_MEMBER(stuntair_state::spritebank1_w)
{
m_spritebank1 = data&0x01;
// other bits are unused
m_spritebank1 = state;
}
WRITE8_MEMBER(stuntair_state::stuntair_nmienable_w)
WRITE_LINE_MEMBER(stuntair_state::nmi_enable_w)
{
m_nmi_enable = data&0x01;
m_nmi_enable = state;
if (!m_nmi_enable)
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
// other bits are unused
}
WRITE8_MEMBER(stuntair_state::stuntair_coin_w)
@ -309,27 +309,25 @@ WRITE8_MEMBER(stuntair_state::stuntair_coin_w)
WRITE8_MEMBER(stuntair_state::stuntair_sound_w)
{
// each command is written three times: with bit 7 set, then with bit 7 clear, then with bit 7 set again
// the 3 highest bits are ignored by the sound program
m_soundlatch->write(space, 0, data);
m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
m_audiocpu->set_input_line(INPUT_LINE_NMI, BIT(data, 7) ? CLEAR_LINE : ASSERT_LINE);
}
// main Z80
static ADDRESS_MAP_START( stuntair_map, AS_PROGRAM, 8, stuntair_state )
AM_RANGE(0x0000, 0x9fff) AM_ROM
AM_RANGE(0xc000, 0xc7ff) AM_RAM
AM_RANGE(0xc000, 0xc7ff) AM_RAM AM_SHARE("nvram")
AM_RANGE(0xc800, 0xcbff) AM_RAM_WRITE(stuntair_bgattrram_w) AM_SHARE("bgattrram")
AM_RANGE(0xd000, 0xd3ff) AM_RAM_WRITE(stuntair_bgram_w) AM_SHARE("bgram")
AM_RANGE(0xd800, 0xdfff) AM_RAM AM_SHARE("sprram")
AM_RANGE(0xe000, 0xe000) AM_READ_PORT("DSWB") AM_WRITE(stuntair_coin_w)
AM_RANGE(0xe800, 0xe800) AM_READ_PORT("DSWA") AM_WRITE(stuntair_bgxscroll_w)
AM_RANGE(0xf000, 0xf000) AM_READ_PORT("IN2")
AM_RANGE(0xf001, 0xf001) AM_WRITE(stuntair_nmienable_w)
AM_RANGE(0xf002, 0xf002) AM_READ_PORT("IN3")
AM_RANGE(0xf003, 0xf003) AM_READNOP AM_WRITE(stuntair_spritebank1_w)
// AM_RANGE(0xf004, 0xf004) AM_WRITENOP
AM_RANGE(0xf005, 0xf005) AM_WRITE(stuntair_spritebank0_w)
// AM_RANGE(0xf006, 0xf006) AM_WRITENOP
// AM_RANGE(0xf007, 0xf007) AM_WRITENOP
AM_RANGE(0xf003, 0xf003) AM_DEVREAD("watchdog", watchdog_timer_device, reset_r)
AM_RANGE(0xf000, 0xf007) AM_DEVWRITE("mainlatch", ls259_device, write_d0)
AM_RANGE(0xf800, 0xfbff) AM_RAM_WRITE(stuntair_fgram_w) AM_SHARE("fgram")
AM_RANGE(0xfc03, 0xfc03) AM_WRITE(stuntair_sound_w)
ADDRESS_MAP_END
@ -356,7 +354,7 @@ ADDRESS_MAP_END
***************************************************************************/
static INPUT_PORTS_START( stuntair )
PORT_START("DSWB") // the bit order is scrambled, but this matches the text above
PORT_START("DSWB") // the bit order is scrambled (see table at 05B0), but this matches the text above
PORT_DIPNAME( 0x18, 0x00, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SWB:2,1")
PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
@ -378,7 +376,7 @@ static INPUT_PORTS_START( stuntair )
PORT_DIPSETTING( 0x01, "4" )
PORT_DIPSETTING( 0x81, "5" )
PORT_START("DSWA") // the bit order is scrambled, not sure if the dip locations are correct
PORT_START("DSWA") // the bit order is scrambled (table at 05B0 also used), not sure if the dip locations are correct
PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x10, "SWA:1" ) // test related? $05c7
PORT_DIPNAME( 0x28, 0x08, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SWA:2,3") // $298f
PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
@ -520,6 +518,20 @@ static MACHINE_CONFIG_START( stuntair )
MCFG_CPU_IO_MAP(stuntair_sound_portmap)
MCFG_CPU_PERIODIC_INT_DRIVER(stuntair_state, irq0_line_hold, 420) // drives music tempo, timing is approximate based on PCB audio recording.. and where is irq ack?
MCFG_DEVICE_ADD("mainlatch", LS259, 0) // type and location not verified
MCFG_ADDRESSABLE_LATCH_Q0_OUT_CB(NOOP) // set but never cleared
MCFG_ADDRESSABLE_LATCH_Q1_OUT_CB(WRITELINE(stuntair_state, nmi_enable_w))
MCFG_ADDRESSABLE_LATCH_Q2_OUT_CB(NOOP) // cleared at start
MCFG_ADDRESSABLE_LATCH_Q3_OUT_CB(WRITELINE(stuntair_state, spritebank1_w))
MCFG_ADDRESSABLE_LATCH_Q4_OUT_CB(NOOP) // cleared at start
MCFG_ADDRESSABLE_LATCH_Q5_OUT_CB(WRITELINE(stuntair_state, spritebank0_w))
MCFG_ADDRESSABLE_LATCH_Q6_OUT_CB(NOOP) // cleared at start
MCFG_ADDRESSABLE_LATCH_Q7_OUT_CB(NOOP) // cleared at start
MCFG_NVRAM_ADD_0FILL("nvram")
MCFG_WATCHDOG_ADD("watchdog")
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60) // ?