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avt : added notes from the remnants of the schematic (nw)

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Robbbert 2017-10-19 12:00:34 +11:00
parent aef651f228
commit 5421be9747
1 changed files with 26 additions and 19 deletions
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45
src/mame/drivers/avt.cpp
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@ -420,7 +420,7 @@
#include "machine/nvram.h" #include "machine/nvram.h"
#include "sound/ay8910.h" #include "sound/ay8910.h"
#include "video/mc6845.h" #include "video/mc6845.h"
//#include "machine/z80ctc.h" #include "machine/z80ctc.h"
#include "machine/z80pio.h" #include "machine/z80pio.h"
#include "screen.h" #include "screen.h"
#include "speaker.h" #include "speaker.h"
@ -438,7 +438,7 @@ public:
: driver_device(mconfig, type, tag) : driver_device(mconfig, type, tag)
, m_maincpu(*this,"maincpu") , m_maincpu(*this,"maincpu")
, m_crtc(*this, "crtc") , m_crtc(*this, "crtc")
, m_pio1(*this, "pio1") , m_pio0(*this, "pio0")
, m_videoram(*this, "videoram") , m_videoram(*this, "videoram")
, m_colorram(*this, "colorram") , m_colorram(*this, "colorram")
, m_gfxdecode(*this, "gfxdecode") , m_gfxdecode(*this, "gfxdecode")
@ -461,7 +461,7 @@ private:
virtual void video_start() override; virtual void video_start() override;
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_device<mc6845_device> m_crtc; 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_videoram;
required_shared_ptr<uint8_t> m_colorram; required_shared_ptr<uint8_t> m_colorram;
required_device<gfxdecode_device> m_gfxdecode; required_device<gfxdecode_device> m_gfxdecode;
@ -647,13 +647,8 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( avt_portmap, AS_IO, 8, avt_state ) static ADDRESS_MAP_START( avt_portmap, AS_IO, 8, avt_state )
ADDRESS_MAP_GLOBAL_MASK(0xff) ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("pio1", z80pio_device, read_alt, write_alt) AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("pio0", z80pio_device, read_alt, write_alt)
// AM_RANGE(0x00, 0x00) AM_READ_PORT("DSW1") AM_RANGE(0x08, 0x0b) AM_DEVREADWRITE("pio1", z80pio_device, read_alt, write_alt)
// 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(0x21, 0x21) AM_DEVWRITE("aysnd", ay8910_device, data_w) /* AY8910 data */ 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(0x23, 0x23) AM_DEVWRITE("aysnd", ay8910_device, address_w) /* AY8910 control */
AM_RANGE(0x28, 0x28) AM_WRITE(avt_6845_address_w) AM_RANGE(0x28, 0x28) AM_WRITE(avt_6845_address_w)
@ -663,7 +658,7 @@ ADDRESS_MAP_END
/* I/O byte R/W /* I/O byte R/W
(from avtbingo) (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) 02C3: DB 02 in a,($02)
02C5: 2F cpl 02C5: 2F cpl
@ -687,6 +682,7 @@ ADDRESS_MAP_END
1ACE: CD B6 2D call $2DB6 ----> nothing there!!! 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 poll the port 00h and compare with 0x03
1379: 0E 00 ld c,$00 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( 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( 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( 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 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END 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 // 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) 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[] = static const z80_daisy_config daisy_chain[] =
{ {
//{ "ctc0" },
{ "pio1" }, { "pio1" },
{ "pio2" }, { "pio0" },
//{ "ctc" },
{ nullptr } { nullptr }
}; };
static MACHINE_CONFIG_START( avt ) static MACHINE_CONFIG_START( avt )
/* basic machine hardware */ /* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, CPU_CLOCK) /* guess */ MCFG_CPU_ADD("maincpu", Z80, CPU_CLOCK) /* guess */
MCFG_Z80_DAISY_CHAIN(daisy_chain) 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_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_UPDATE_DRIVER(avt_state, screen_update_avt)
MCFG_SCREEN_PALETTE("palette") MCFG_SCREEN_PALETTE("palette")
MCFG_GFXDECODE_ADD("gfxdecode", "palette", avt) MCFG_GFXDECODE_ADD("gfxdecode", "palette", avt)
MCFG_PALETTE_ADD("palette", 8*16) 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_ADD("crtc", MC6845, "screen", CRTC_CLOCK) /* guess */
MCFG_MC6845_SHOW_BORDER_AREA(false) MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8) MCFG_MC6845_CHAR_WIDTH(8)
MCFG_MC6845_OUT_VSYNC_CB(DEVWRITELINE("ctc0", z80ctc_device, trg3))
/* sound hardware */ /* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("aysnd", AY8910, CPU_CLOCK/2) /* 1.25 MHz.?? */ MCFG_SOUND_ADD("aysnd", AY8910, CPU_CLOCK/2) /* 1.25 MHz.?? */
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) 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_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
MCFG_Z80PIO_IN_PB_CB(IOPORT("IN0")) 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)) 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 MACHINE_CONFIG_END