diff options
Diffstat (limited to 'src/mame/drivers/avt.cpp')
| -rw-r--r-- | src/mame/drivers/avt.cpp | 45 |
1 files changed, 26 insertions, 19 deletions
diff --git a/src/mame/drivers/avt.cpp b/src/mame/drivers/avt.cpp index 6055a3ff35b..148629d8955 100644 --- a/src/mame/drivers/avt.cpp +++ b/src/mame/drivers/avt.cpp @@ -420,7 +420,7 @@ #include "machine/nvram.h" #include "sound/ay8910.h" #include "video/mc6845.h" -//#include "machine/z80ctc.h" +#include "machine/z80ctc.h" #include "machine/z80pio.h" #include "screen.h" #include "speaker.h" @@ -438,7 +438,7 @@ public: : driver_device(mconfig, type, tag) , m_maincpu(*this,"maincpu") , m_crtc(*this, "crtc") - , m_pio1(*this, "pio1") + , m_pio0(*this, "pio0") , m_videoram(*this, "videoram") , m_colorram(*this, "colorram") , m_gfxdecode(*this, "gfxdecode") @@ -461,7 +461,7 @@ private: virtual void video_start() override; required_device<cpu_device> m_maincpu; required_device<mc6845_device> m_crtc; - required_device<z80pio_device> m_pio1; + required_device<z80pio_device> m_pio0; required_shared_ptr<uint8_t> m_videoram; required_shared_ptr<uint8_t> m_colorram; required_device<gfxdecode_device> m_gfxdecode; @@ -647,13 +647,8 @@ ADDRESS_MAP_END static ADDRESS_MAP_START( avt_portmap, AS_IO, 8, avt_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("pio1", z80pio_device, read_alt, write_alt) -// AM_RANGE(0x00, 0x00) AM_READ_PORT("DSW1") -// AM_RANGE(0x01, 0x01) AM_READ_PORT("IN1") -// AM_RANGE(0x02, 0x02) AM_READ_PORT("IN0") - AM_RANGE(0x08, 0x0b) AM_DEVREADWRITE("pio2", z80pio_device, read_alt, write_alt) -// AM_RANGE(0x08, 0x08) AM_READ_PORT("IN2") -// AM_RANGE(0x09, 0x09) AM_READ_PORT("IN3") + AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("pio0", z80pio_device, read_alt, write_alt) + AM_RANGE(0x08, 0x0b) AM_DEVREADWRITE("pio1", z80pio_device, read_alt, write_alt) AM_RANGE(0x21, 0x21) AM_DEVWRITE("aysnd", ay8910_device, data_w) /* AY8910 data */ AM_RANGE(0x23, 0x23) AM_DEVWRITE("aysnd", ay8910_device, address_w) /* AY8910 control */ AM_RANGE(0x28, 0x28) AM_WRITE(avt_6845_address_w) @@ -663,7 +658,7 @@ ADDRESS_MAP_END /* I/O byte R/W (from avtbingo) - inputs are throusg port 02h, masked with 0x3F & 0x40. + inputs are through port 02h, masked with 0x3F & 0x40. 02C3: DB 02 in a,($02) 02C5: 2F cpl @@ -687,6 +682,7 @@ ADDRESS_MAP_END 1ACE: CD B6 2D call $2DB6 ----> nothing there!!! + This changes which lamps are lit depending on which ones are lit now.. poll the port 00h and compare with 0x03 1379: 0E 00 ld c,$00 @@ -901,7 +897,7 @@ static INPUT_PORTS_START( avtbingo ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(2) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_POKER_HOLD5 ) PORT_NAME("Column 5 UP") PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_POKER_HOLD4 ) PORT_NAME("Column 4 UP") - PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_7) PORT_NAME("IN0-7") // Used. Masked 0x40. See code at PC=0338. + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_7) PORT_NAME("IN0-7") // Used. Masked 0x40. See code at PC=0338. (SW2 to enter setup) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END @@ -938,19 +934,18 @@ GFXDECODE_END // our pio cannot detect a static interrupt, so we push the current switch state in, then it will work INTERRUPT_GEN_MEMBER(avt_state::avt_vblank_irq) { - m_pio1->port_b_write(ioport("IN0")->read()); + m_pio0->port_b_write(ioport("IN0")->read()); } static const z80_daisy_config daisy_chain[] = { + //{ "ctc0" }, { "pio1" }, - { "pio2" }, - //{ "ctc" }, + { "pio0" }, { nullptr } }; static MACHINE_CONFIG_START( avt ) - /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z80, CPU_CLOCK) /* guess */ MCFG_Z80_DAISY_CHAIN(daisy_chain) @@ -966,7 +961,6 @@ static MACHINE_CONFIG_START( avt ) MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1) /* 240x224 (through CRTC) */ MCFG_SCREEN_UPDATE_DRIVER(avt_state, screen_update_avt) MCFG_SCREEN_PALETTE("palette") - MCFG_GFXDECODE_ADD("gfxdecode", "palette", avt) MCFG_PALETTE_ADD("palette", 8*16) @@ -975,18 +969,31 @@ static MACHINE_CONFIG_START( avt ) MCFG_MC6845_ADD("crtc", MC6845, "screen", CRTC_CLOCK) /* guess */ MCFG_MC6845_SHOW_BORDER_AREA(false) MCFG_MC6845_CHAR_WIDTH(8) + MCFG_MC6845_OUT_VSYNC_CB(DEVWRITELINE("ctc0", z80ctc_device, trg3)) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("aysnd", AY8910, CPU_CLOCK/2) /* 1.25 MHz.?? */ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) - MCFG_DEVICE_ADD("pio1", Z80PIO, CPU_CLOCK) + // device never addressed by cpu + MCFG_DEVICE_ADD("ctc0", Z80CTC, CPU_CLOCK) // U27 + MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) + MCFG_Z80CTC_ZC0_CB(DEVWRITELINE("ctc0", z80ctc_device, trg1)) + // ZC1 not connected + // TRG2 to TP18; ZC2 to TP9; TRG3 to VSYNC; TRG0 to cpu_clock/4 + + MCFG_DEVICE_ADD("pio0", Z80PIO, CPU_CLOCK) // U23 MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_Z80PIO_IN_PB_CB(IOPORT("IN0")) + // PORT A appears to be lamp drivers + // PORT B d0-d5 = muxed inputs; d6 = SW2 pushbutton; d7 = ? - MCFG_DEVICE_ADD("pio2", Z80PIO, CPU_CLOCK) + MCFG_DEVICE_ADD("pio1", Z80PIO, CPU_CLOCK) // U22 MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) + // PORT A d0-d7 = TP13,TP12,TP11,TP10,TP8,TP7,TP5,TP3 + // PORT B d0-d7 = "Player2", DCOM, CCOM, BCOM, ACOM, LOCKOUT/TP6, TP4, 50/60HZ (held high, jumper on JP13 grounds it) + // DCOM,CCOM,BCOM,ACOM appear to be muxes MACHINE_CONFIG_END |