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zaccaria.cpp: Add 74LS259; improve documentation (nw)

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This commit is contained in:
AJR 2017-08-06 19:45:07 -04:00
parent 6f4adb8f5a
commit ef2cf163ae
3 changed files with 30 additions and 32 deletions
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45
src/mame/drivers/zaccaria.cpp
View file

@ -2,7 +2,7 @@
// copyright-holders:Nicola Salmoria
/***************************************************************************
Jack Rabbit memory map (preliminary)
Zaccaria Z80µP hardware
driver by Nicola Salmoria
thanks to Andrea Babich for the manual.
@ -25,10 +25,10 @@ TODO:
Notes:
- There is a protection device on the memory board which is unidentified on the
schematics but appears to be a PAL16. It sits on bits 4-7 of the data bus, and
is read from locations where only bits 0-3 are connected to regular devices
(6400-6407 has 4-bit RAM, while 6c00-6c07 has a 4-bit input port).
- The protection device at 1A on the ROM board (1B11147) is unidentified on the
schematics but appears to be a PAL16L8 or PAL16R4. It sits on bits 4-7 of the
data bus, and is read from locations where only bits 0-3 are connected to regular
devices (6400-6407 has 4-bit RAM, while 6c00-6c07 has a 4-bit input port).
- The 6802 driving the TMS5220 has a push button connected to the NMI line. On
Zaccaria pinballs, when pressed, this causes the speech 6802 and the slave
@ -43,6 +43,7 @@ Notes:
#include "includes/zaccaria.h"
#include "cpu/z80/z80.h"
#include "machine/74259.h"
#include "machine/i8255.h"
#include "machine/watchdog.h"
#include "screen.h"
@ -58,7 +59,6 @@ void zaccaria_state::machine_start()
void zaccaria_state::machine_reset()
{
m_dsw_sel = 0;
m_nmi_mask = 0;
}
WRITE8_MEMBER(zaccaria_state::dsw_sel_w)
@ -133,14 +133,16 @@ READ8_MEMBER(zaccaria_state::prot2_r)
}
WRITE8_MEMBER(zaccaria_state::coin_w)
WRITE_LINE_MEMBER(zaccaria_state::coin_w)
{
machine().bookkeeping().coin_counter_w(0,data & 1);
machine().bookkeeping().coin_counter_w(0, state);
}
WRITE8_MEMBER(zaccaria_state::nmi_mask_w)
WRITE_LINE_MEMBER(zaccaria_state::nmi_mask_w)
{
m_nmi_mask = data & 1;
m_nmi_mask = state;
if (!m_nmi_mask)
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
}
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, zaccaria_state )
@ -151,12 +153,7 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, zaccaria_state )
AM_RANGE(0x6800, 0x683f) AM_WRITE(attributes_w) AM_SHARE("attributesram")
AM_RANGE(0x6840, 0x685f) AM_RAM AM_SHARE("spriteram")
AM_RANGE(0x6881, 0x68c0) AM_RAM AM_SHARE("spriteram2")
AM_RANGE(0x6c00, 0x6c00) AM_MIRROR(0x81f8) AM_WRITE(flip_screen_x_w)
AM_RANGE(0x6c01, 0x6c01) AM_MIRROR(0x81f8) AM_WRITE(flip_screen_y_w)
AM_RANGE(0x6c02, 0x6c02) AM_MIRROR(0x81f8) AM_WRITE(ressound_w)
AM_RANGE(0x6c06, 0x6c06) AM_MIRROR(0x81f8) AM_WRITE(coin_w)
AM_RANGE(0x6c07, 0x6c07) AM_MIRROR(0x81f8) AM_WRITE(nmi_mask_w)
AM_RANGE(0x6c00, 0x6c07) AM_MIRROR(0x81f8) AM_READ(prot2_r)
AM_RANGE(0x6c00, 0x6c07) AM_MIRROR(0x81f8) AM_READ(prot2_r) AM_DEVWRITE("mainlatch", ls259_device, write_d0)
AM_RANGE(0x6e00, 0x6e00) AM_MIRROR(0x81f8) AM_READ(dsw_r) AM_DEVWRITE("audiopcb", zac1b11142_audio_device, hs_w)
AM_RANGE(0x7000, 0x77ff) AM_RAM
AM_RANGE(0x7800, 0x7803) AM_DEVREADWRITE("ppi8255", i8255_device, read, write)
@ -165,11 +162,6 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, zaccaria_state )
ADDRESS_MAP_END
WRITE8_MEMBER(zaccaria_state::ressound_w)
{
m_audiopcb->ressound_w(data & 0x01);
}
static INPUT_PORTS_START( monymony )
PORT_START("DSW.0")
PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW 5I:1,2")
@ -333,8 +325,8 @@ GFXDECODE_END
INTERRUPT_GEN_MEMBER(zaccaria_state::vblank_irq)
{
if(m_nmi_mask)
device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE);
if (m_nmi_mask)
device.execute().set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
}
@ -348,6 +340,13 @@ static MACHINE_CONFIG_START( zaccaria )
MCFG_WATCHDOG_ADD("watchdog")
MCFG_DEVICE_ADD("mainlatch", LS259, 0) // 3G on 1B1141 I/O (Z80) board
MCFG_ADDRESSABLE_LATCH_Q0_OUT_CB(WRITELINE(zaccaria_state, flip_screen_x_w)) // VCMA
MCFG_ADDRESSABLE_LATCH_Q1_OUT_CB(WRITELINE(zaccaria_state, flip_screen_y_w)) // HCMA
MCFG_ADDRESSABLE_LATCH_Q2_OUT_CB(DEVWRITELINE("audiopcb", zac1b11142_audio_device, ressound_w)) // RESSOUND
MCFG_ADDRESSABLE_LATCH_Q6_OUT_CB(WRITELINE(zaccaria_state, coin_w)) // COUNT
MCFG_ADDRESSABLE_LATCH_Q7_OUT_CB(WRITELINE(zaccaria_state, nmi_mask_w)) // INTST
MCFG_DEVICE_ADD("ppi8255", I8255A, 0)
MCFG_I8255_IN_PORTA_CB(IOPORT("P1"))
MCFG_I8255_IN_PORTB_CB(IOPORT("P2"))

9
src/mame/includes/zaccaria.h
View file

@ -21,13 +21,12 @@ public:
DECLARE_READ8_MEMBER(dsw_r);
DECLARE_READ8_MEMBER(prot1_r);
DECLARE_READ8_MEMBER(prot2_r);
DECLARE_WRITE8_MEMBER(coin_w);
DECLARE_WRITE8_MEMBER(nmi_mask_w);
DECLARE_WRITE_LINE_MEMBER(coin_w);
DECLARE_WRITE_LINE_MEMBER(nmi_mask_w);
DECLARE_WRITE8_MEMBER(videoram_w);
DECLARE_WRITE8_MEMBER(attributes_w);
DECLARE_WRITE8_MEMBER(flip_screen_x_w);
DECLARE_WRITE8_MEMBER(flip_screen_y_w);
DECLARE_WRITE8_MEMBER(ressound_w);
DECLARE_WRITE_LINE_MEMBER(flip_screen_x_w);
DECLARE_WRITE_LINE_MEMBER(flip_screen_y_w);
DECLARE_WRITE8_MEMBER(dsw_sel_w);
TILE_GET_INFO_MEMBER(get_tile_info);
virtual void machine_start() override;

8
src/mame/video/zaccaria.cpp
View file

@ -168,14 +168,14 @@ WRITE8_MEMBER(zaccaria_state::attributes_w)
m_attributesram[offset] = data;
}
WRITE8_MEMBER(zaccaria_state::flip_screen_x_w)
WRITE_LINE_MEMBER(zaccaria_state::flip_screen_x_w)
{
flip_screen_x_set(data & 1);
flip_screen_x_set(state);
}
WRITE8_MEMBER(zaccaria_state::flip_screen_y_w)
WRITE_LINE_MEMBER(zaccaria_state::flip_screen_y_w)
{
flip_screen_y_set(data & 1);
flip_screen_y_set(state);
}