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https://github.com/holub/mame
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catnmous sound support
This commit is contained in:
Vas Crabb
parent
6d14257032
commit
c379fd4d97
@ -2,9 +2,36 @@
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// copyright-holders:Vas Crabb
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/*
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Laser Battle / Lazarian (c) 1981 Zaccaria
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Cat and Mouse (c) 1982 Zaccaria
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audio emulation by Vas Crabb
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*/
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#include "includes/laserbat.h"
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READ8_MEMBER(laserbat_state_base::rhsc_r)
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{
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return m_rhsc;
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}
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WRITE8_MEMBER(laserbat_state_base::whsc_w)
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{
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m_whsc = data;
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}
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WRITE8_MEMBER(laserbat_state_base::csound1_w)
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{
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m_csound1 = data;
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}
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WRITE8_MEMBER(laserbat_state_base::csound2_w)
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{
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m_csound2 = data;
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}
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/*
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The Laser Battle/Lazarian sound board has a SN76477 CSG, two TMS3615
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tone synthesisers, and a TDA1010 power amplifier. It receives
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commands from the game board over a 16-bit unidirectional data bus.
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@ -99,30 +126,6 @@
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*/
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#include "includes/laserbat.h"
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READ8_MEMBER(laserbat_state_base::rhsc_r)
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{
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return m_rhsc;
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}
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WRITE8_MEMBER(laserbat_state_base::whsc_w)
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{
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m_whsc = data;
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}
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WRITE8_MEMBER(laserbat_state_base::csound1_w)
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{
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m_csound1 = data;
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}
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WRITE8_MEMBER(laserbat_state_base::csound2_w)
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{
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m_csound2 = data;
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}
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WRITE8_MEMBER(laserbat_state::csound2_w)
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{
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// there are a bunch of edge-triggered things, so grab changes
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@ -221,3 +224,153 @@ WRITE8_MEMBER(laserbat_state::csound2_w)
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// keep for detecting changes next time
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m_csound2 = data;
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}
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/*
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The Cat and Mouse sound board has a 6802 processor with three ROMs,
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a 6821 PIA, two AY-3-8910 PSGs, and some other logic and analog
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circuitry. Unfortunately we lack a schematic, so all knowledge of
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this board is based on tracing the sound program.
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The 6821 PIA is mapped at addresses $005C..$005F. The known PIA
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signal assignments are as follows:
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+------+-----------------------+
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| PA0 | PSG1/PSG2 DA0 |
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| PA1 | PSG1/PSG2 DA1 |
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| PA2 | PSG1/PSG2 DA2 |
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| PA3 | PSG1/PSG2 DA3 |
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| PA4 | PSG1/PSG2 DA4 |
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| PA5 | PSG1/PSG2 DA5 |
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| PA6 | PSG1/PSG2 DA6 |
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| PA7 | PSG1/PSG2 DA7 |
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| PB0 | PSG1 BC1 |
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| PB1 | PSG1 BDIR |
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| PB2 | PSG2 BC1 |
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| PB3 | PSG2 BDIR |
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| CA1 | Host interface bit 6 |
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| CB1 | periodic IRQ source |
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| IRQA | 6802 NMI |
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| IRQB | 6802 IRQ |
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+------+-----------------------+
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The program makes use of I/O port A on the first PSG as outputs. At
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a guess, it could have the same function as it does on other
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Zaccaria sound boards.
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The first PSG receives commands from the game board in the low five
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bits of port B. Commands are processed on receiving an NMI. The
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sound program always masks out the high three bits of the value so
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they could be connected to anything on the board.
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The I/O ports on the second PSG don't appear to be used at all.
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The game board sends commands to the sound board over a 16-bit
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unidirectional data bus. The CPU cannot write all sixteen lines
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atomically, it write to lines 1-8 as one group and 9-16 as another
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group. Not all bit functions are known:
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+-----+----------------------------------------------------------+
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| Bit | Function |
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+-----+----------------------------------------------------------+
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| 1 | PSG1 IOB0 |
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| 2 | PSG1 IOB1 |
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| 3 | PSG1 IOB2 |
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| 4 | PSG1 IOB3 |
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| 5 | PSG1 IOB4 |
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| 6 | PIA CA1 |
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| 7 | |
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| 8 | |
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| 9 | Used but unknown purpose |
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| 10 | |
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| 11 | |
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| 12 | |
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| 13 | |
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| 14 | |
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| 15 | |
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| 16 | Used but unknown purpose |
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+-----+----------------------------------------------------------+
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The game board makes the the audio output from the first S2636 PVI
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(5E) available on a pin at the sound board interface connector, but
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it may or may not be routed anywhere.
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*/
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WRITE8_MEMBER(catnmous_state::csound1_w)
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{
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m_pia->ca1_w((data & 0x20) ? 1 : 0);
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m_csound1 = data;
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}
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READ8_MEMBER(catnmous_state::pia_porta_r)
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{
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UINT8 const control = m_pia->b_output();
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UINT8 data = 0xff;
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if (0x01 == (control & 0x03))
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data &= m_psg1->data_r(space, 0);
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if (0x04 == (control & 0x0c))
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data &= m_psg2->data_r(space, 0);
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return data;
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}
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WRITE8_MEMBER(catnmous_state::pia_porta_w)
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{
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UINT8 const control = m_pia->b_output();
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if (control & 0x02)
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m_psg1->data_address_w(space, (control >> 0) & 0x01, data);
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if (control & 0x08)
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m_psg2->data_address_w(space, (control >> 2) & 0x01, data);
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}
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WRITE8_MEMBER(catnmous_state::pia_portb_w)
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{
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if (data & 0x02)
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m_psg1->data_address_w(space, (data >> 0) & 0x01, m_pia->a_output());
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if (data & 0x08)
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m_psg2->data_address_w(space, (data >> 2) & 0x01, m_pia->a_output());
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}
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WRITE_LINE_MEMBER(catnmous_state::pia_irqa)
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{
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m_audiocpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE);
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}
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WRITE_LINE_MEMBER(catnmous_state::pia_irqb)
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{
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m_audiocpu->set_input_line(INPUT_LINE_IRQ0, state ? ASSERT_LINE : CLEAR_LINE);
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}
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WRITE8_MEMBER(catnmous_state::psg1_porta_w)
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{
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// similar to zaccaria.c since we have no clue how this board really works
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// this code could be completely wrong/inappropriate for this game for all we know
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static double const table[8] = {
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RES_K(8.2),
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RES_R(820),
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RES_K(3.3),
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RES_R(150),
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RES_K(5.6),
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RES_R(390),
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RES_K(1.5),
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RES_R(47) };
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RES_VOLTAGE_DIVIDER(RES_K(4.7), table[data & 0x07]);
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m_psg2->set_volume(1, 150 * RES_VOLTAGE_DIVIDER(RES_K(4.7), table[data & 0x07]));
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}
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READ8_MEMBER(catnmous_state::psg1_portb_r)
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{
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// the program masks out the three high bits - no clue what they're connected to
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return m_csound1 & 0x1f;
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}
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INTERRUPT_GEN_MEMBER(catnmous_state::cb1_toggle)
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{
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m_cb1 = !m_cb1;
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m_pia->cb1_w(m_cb1 ? 1 : 0);
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}
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@ -1,12 +1,15 @@
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// license:BSD-3-Clause
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// copyright-holders:Pierpaolo Prazzoli, Vas Crabb
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// copyright-holders:Vas Crabb
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/*
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Laser Battle / Lazarian (c) 1981 Zaccaria
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Cat and Mouse (c) 1982 Zaccaria
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original driver by Pierpaolo Prazzoli
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The two games have a similar video hardware, but sound hardware is
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The two games have identical game/video boards hardware, but
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completely different sound boards. Laser Battle/Lazarian have a
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dumb sound board with TMS organ and CSG chips driven directly by the
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game program. Cat'N'Mouse
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very different and they don't use the collision detection provided
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by the s2636 chips.
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@ -18,10 +21,14 @@
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written at I/O address 3. The sound board controls data direction
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on J7 and when input from sound board to game board is latched.
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Both Laser Battle/Lazarian and Cat and Mouse use the unidirectional
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interface on J3. It seems there are no games that actually use the
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bidirectional interface on J7.
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Laser Battle/Lazarian notes:
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* Cocktail cabinet has an additional "image commutation board"
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consuming the screen flip output, presumably flipping the image by
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means of dark magic
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reversing the deflection coil connections
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* Player 2 inputs are only used in cocktail mode
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* Tilt input resets Laser Battle, but just causes loss of one credit
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in Lazarian
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@ -35,7 +42,7 @@
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TODO:
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- work out where all the magic layer offsets come from
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- second bank of DIP switches in laserbat
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- second bank of DIP switches in laserbat and catnmous
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- sound in laserbat (with schematics) and in catnmous
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*/
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@ -99,8 +106,6 @@ READ8_MEMBER(laserbat_state_base::rrowx_r)
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/*
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Color handling with 2716.14L and 82S100.10M
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2716.14L address lines are connected as follows:
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A0 4H
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@ -134,7 +139,7 @@ static ADDRESS_MAP_START( laserbat_map, AS_PROGRAM, 8, laserbat_state_base )
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AM_RANGE(0x6000, 0x73ff) AM_ROM
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AM_RANGE(0x7800, 0x7bff) AM_ROM
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AM_RANGE(0x1400, 0x14ff) AM_MIRROR(0x6000) AM_WRITENOP // always 0 (bullet ram in Quasar)
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AM_RANGE(0x1400, 0x14ff) AM_MIRROR(0x6000) AM_WRITENOP
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AM_RANGE(0x1500, 0x15ff) AM_MIRROR(0x6000) AM_DEVREADWRITE("pvi1", s2636_device, read_data, write_data)
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AM_RANGE(0x1600, 0x16ff) AM_MIRROR(0x6000) AM_DEVREADWRITE("pvi2", s2636_device, read_data, write_data)
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AM_RANGE(0x1700, 0x17ff) AM_MIRROR(0x6000) AM_DEVREADWRITE("pvi3", s2636_device, read_data, write_data)
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@ -159,7 +164,8 @@ ADDRESS_MAP_END
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static ADDRESS_MAP_START( catnmous_sound_map, AS_PROGRAM, 8, catnmous_state )
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AM_RANGE(0x0000, 0x007f) AM_RAM
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AM_RANGE(0x500c, 0x500f) AM_DEVREADWRITE("pia", pia6821_device, read, write)
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AM_RANGE(0xf000, 0xffff) AM_ROM
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AM_RANGE(0xc000, 0xcfff) AM_ROM
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AM_RANGE(0xe000, 0xffff) AM_ROM
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ADDRESS_MAP_END
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@ -348,7 +354,7 @@ static INPUT_PORTS_START( catnmous )
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// PORT_DIPSETTING( 0x50, DEF_STR(Infinite) )
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// PORT_DIPSETTING( 0x60, DEF_STR(Infinite) )
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// PORT_DIPSETTING( 0x70, DEF_STR(Infinite) )
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PORT_DIPNAME( 0x80, 0x80, "Game Over Melody" ) PORT_DIPLOCATION("SW-1:8")
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PORT_DIPNAME( 0x80, 0x80, DEF_STR(Demo_Sounds) ) PORT_DIPLOCATION("SW-1:8")
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PORT_DIPSETTING( 0x00, DEF_STR(Off) )
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PORT_DIPSETTING( 0x80, DEF_STR(On) )
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INPUT_PORTS_END
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@ -387,70 +393,11 @@ static GFXDECODE_START( laserbat )
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GFXDECODE_END
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/* Cat'N Mouse sound ***********************************/
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WRITE_LINE_MEMBER(catnmous_state::zaccaria_irq0a)
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{
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m_audiocpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE);
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}
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WRITE_LINE_MEMBER(catnmous_state::zaccaria_irq0b)
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{
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m_audiocpu->set_input_line(0, state ? ASSERT_LINE : CLEAR_LINE);
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}
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READ8_MEMBER(catnmous_state::zaccaria_port0a_r)
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{
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ay8910_device *ay8910 = (m_active_8910 == 0) ? m_ay1 : m_ay2;
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return ay8910->data_r(space, 0);
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}
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WRITE8_MEMBER(catnmous_state::zaccaria_port0a_w)
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{
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m_port0a = data;
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}
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WRITE8_MEMBER(catnmous_state::zaccaria_port0b_w)
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{
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/* bit 1 goes to 8910 #0 BDIR pin */
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if ((m_last_port0b & 0x02) == 0x02 && (data & 0x02) == 0x00)
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{
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/* bit 0 goes to the 8910 #0 BC1 pin */
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m_ay1->data_address_w(space, m_last_port0b >> 0, m_port0a);
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}
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else if ((m_last_port0b & 0x02) == 0x00 && (data & 0x02) == 0x02)
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{
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/* bit 0 goes to the 8910 #0 BC1 pin */
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if (m_last_port0b & 0x01)
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m_active_8910 = 0;
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}
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/* bit 3 goes to 8910 #1 BDIR pin */
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if ((m_last_port0b & 0x08) == 0x08 && (data & 0x08) == 0x00)
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{
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/* bit 2 goes to the 8910 #1 BC1 pin */
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m_ay2->data_address_w(space, m_last_port0b >> 2, m_port0a);
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}
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else if ((m_last_port0b & 0x08) == 0x00 && (data & 0x08) == 0x08)
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{
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/* bit 2 goes to the 8910 #1 BC1 pin */
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if (m_last_port0b & 0x04)
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m_active_8910 = 1;
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}
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m_last_port0b = data;
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}
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INTERRUPT_GEN_MEMBER(laserbat_state_base::laserbat_interrupt)
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{
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device.execute().set_input_line_and_vector(0, HOLD_LINE, 0x0a);
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}
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INTERRUPT_GEN_MEMBER(catnmous_state::zaccaria_cb1_toggle)
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{
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m_pia->cb1_w(m_cb1_toggle & 1);
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m_cb1_toggle ^= 1;
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}
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DRIVER_INIT_MEMBER(laserbat_state_base, laserbat)
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{
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m_scanline_timer = timer_alloc(TIMER_SCANLINE);
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@ -492,20 +439,7 @@ void catnmous_state::machine_start()
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{
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laserbat_state_base::machine_start();
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save_item(NAME(m_active_8910));
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save_item(NAME(m_port0a));
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save_item(NAME(m_last_port0b));
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save_item(NAME(m_cb1_toggle));
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}
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void catnmous_state::machine_reset()
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{
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laserbat_state_base::machine_reset();
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m_active_8910 = 0;
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m_port0a = 0;
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m_last_port0b = 0;
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m_cb1_toggle = 0;
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save_item(NAME(m_cb1));
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}
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void laserbat_state_base::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
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@ -589,22 +523,22 @@ static MACHINE_CONFIG_DERIVED_CLASS( catnmous, laserbat_base, catnmous_state )
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// sound board devices
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MCFG_CPU_ADD("audiocpu", M6802, 3580000) // ?
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MCFG_CPU_PROGRAM_MAP(catnmous_sound_map)
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MCFG_CPU_PERIODIC_INT_DRIVER(catnmous_state, zaccaria_cb1_toggle, (double)3580000/4096)
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MCFG_CPU_PERIODIC_INT_DRIVER(catnmous_state, cb1_toggle, (double)3580000/4096)
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MCFG_DEVICE_ADD("pia", PIA6821, 0)
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MCFG_PIA_READPA_HANDLER(READ8(catnmous_state, zaccaria_port0a_r))
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MCFG_PIA_WRITEPA_HANDLER(WRITE8(catnmous_state, zaccaria_port0a_w))
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MCFG_PIA_WRITEPB_HANDLER(WRITE8(catnmous_state, zaccaria_port0b_w))
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MCFG_PIA_IRQA_HANDLER(WRITELINE(catnmous_state, zaccaria_irq0a))
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MCFG_PIA_IRQB_HANDLER(WRITELINE(catnmous_state, zaccaria_irq0b))
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MCFG_PIA_READPA_HANDLER(READ8(catnmous_state, pia_porta_r))
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MCFG_PIA_WRITEPA_HANDLER(WRITE8(catnmous_state, pia_porta_w))
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MCFG_PIA_WRITEPB_HANDLER(WRITE8(catnmous_state, pia_portb_w))
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MCFG_PIA_IRQA_HANDLER(WRITELINE(catnmous_state, pia_irqa))
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MCFG_PIA_IRQB_HANDLER(WRITELINE(catnmous_state, pia_irqb))
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("ay1", AY8910, 3580000/2) // ?
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MCFG_AY8910_PORT_B_READ_CB(READ8(driver_device, soundlatch_byte_r))
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MCFG_SOUND_ADD("psg1", AY8910, 3580000/2) // ?
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MCFG_AY8910_PORT_B_READ_CB(READ8(catnmous_state, psg1_portb_r))
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
|
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|
||||
MCFG_SOUND_ADD("ay2", AY8910, 3580000/2) // ?
|
||||
MCFG_SOUND_ADD("psg2", AY8910, 3580000/2) // ?
|
||||
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
|
||||
|
||||
MACHINE_CONFIG_END
|
||||
@ -706,7 +640,7 @@ Sound Board 1b11107
|
||||
|
||||
6802
|
||||
6821
|
||||
8910
|
||||
2*8910
|
||||
*/
|
||||
|
||||
ROM_START( catnmous )
|
||||
@ -746,8 +680,8 @@ ROM_START( catnmous )
|
||||
ROM_LOAD( "82s100.13m", 0x0000, 0x00f5, CRC(6b724cdb) SHA1(8a0ca3b171b103661a3b2fffbca3d7162089e243) )
|
||||
|
||||
ROM_REGION( 0x10000, "audiocpu", 0 )
|
||||
ROM_LOAD( "sound01.1d", 0xd000, 0x1000, CRC(f65cb9d0) SHA1(a2fe7563c6da055bf6aa20797b2d9fa184f0133c) )
|
||||
ROM_LOAD( "sound01.1f", 0xe000, 0x1000, CRC(473c44de) SHA1(ff08b02d45a2c23cabb5db716aa203225a931424) )
|
||||
ROM_LOAD( "sound01.1f", 0xc000, 0x1000, CRC(473c44de) SHA1(ff08b02d45a2c23cabb5db716aa203225a931424) )
|
||||
ROM_LOAD( "sound01.1d", 0xe000, 0x1000, CRC(f65cb9d0) SHA1(a2fe7563c6da055bf6aa20797b2d9fa184f0133c) )
|
||||
ROM_LOAD( "sound01.1e", 0xf000, 0x1000, CRC(1bd90c93) SHA1(20fd2b765a42e25cf7f716e6631b8c567785a866) )
|
||||
ROM_END
|
||||
|
||||
@ -788,13 +722,13 @@ ROM_START( catnmousa )
|
||||
ROM_LOAD( "catnmousa_82s100.13m", 0x0000, 0x00f5, CRC(6b724cdb) SHA1(8a0ca3b171b103661a3b2fffbca3d7162089e243) BAD_DUMP )
|
||||
|
||||
ROM_REGION( 0x10000, "audiocpu", 0 )
|
||||
ROM_LOAD( "snd.1d", 0xd000, 0x1000, CRC(f65cb9d0) SHA1(a2fe7563c6da055bf6aa20797b2d9fa184f0133c) )
|
||||
ROM_LOAD( "snd.1f", 0xe000, 0x1000, CRC(473c44de) SHA1(ff08b02d45a2c23cabb5db716aa203225a931424) )
|
||||
ROM_LOAD( "snd.1f", 0xc000, 0x1000, CRC(473c44de) SHA1(ff08b02d45a2c23cabb5db716aa203225a931424) )
|
||||
ROM_LOAD( "snd.1d", 0xe000, 0x1000, CRC(f65cb9d0) SHA1(a2fe7563c6da055bf6aa20797b2d9fa184f0133c) )
|
||||
ROM_LOAD( "snd.1e", 0xf000, 0x1000, CRC(1bd90c93) SHA1(20fd2b765a42e25cf7f716e6631b8c567785a866) )
|
||||
ROM_END
|
||||
|
||||
|
||||
GAME( 1981, laserbat, 0, laserbat, laserbat, laserbat_state_base, laserbat, ROT0, "Zaccaria", "Laser Battle", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1981, lazarian, laserbat, laserbat, lazarian, laserbat_state_base, laserbat, ROT0, "Zaccaria (Bally Midway license)", "Lazarian", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1982, catnmous, 0, catnmous, catnmous, laserbat_state_base, laserbat, ROT90, "Zaccaria", "Cat and Mouse (set 1)", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE)
|
||||
GAME( 1982, catnmousa,catnmous, catnmous, catnmous, laserbat_state_base, laserbat, ROT90, "Zaccaria", "Cat and Mouse (set 2)", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE)
|
||||
GAME( 1981, laserbat, 0, laserbat, laserbat, laserbat_state_base, laserbat, ROT0, "Zaccaria", "Laser Battle", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1981, lazarian, laserbat, laserbat, lazarian, laserbat_state_base, laserbat, ROT0, "Zaccaria (Bally Midway license)", "Lazarian", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1982, catnmous, 0, catnmous, catnmous, laserbat_state_base, laserbat, ROT90, "Zaccaria", "Cat and Mouse (set 1)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1982, catnmousa, catnmous, catnmous, catnmous, laserbat_state_base, laserbat, ROT90, "Zaccaria", "Cat and Mouse (set 2)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Pierpaolo Prazzoli, Vas Crabb
|
||||
// copyright-holders:Vas Crabb
|
||||
/*************************************************************************
|
||||
|
||||
Laser Battle / Lazarian - Cat and Mouse
|
||||
@ -185,43 +185,42 @@ class catnmous_state : public laserbat_state_base
|
||||
public:
|
||||
catnmous_state(const machine_config &mconfig, device_type type, const char *tag)
|
||||
: laserbat_state_base(mconfig, type, tag)
|
||||
, m_pia(*this, "pia")
|
||||
, m_audiocpu(*this, "audiocpu")
|
||||
, m_ay1(*this, "ay1")
|
||||
, m_ay2(*this, "ay2")
|
||||
, m_active_8910(0)
|
||||
, m_port0a(0)
|
||||
, m_last_port0b(0)
|
||||
, m_cb1_toggle(0)
|
||||
, m_pia(*this, "pia")
|
||||
, m_psg1(*this, "psg1")
|
||||
, m_psg2(*this, "psg2")
|
||||
, m_cb1(false)
|
||||
{
|
||||
}
|
||||
|
||||
// control ports
|
||||
DECLARE_WRITE_LINE_MEMBER(zaccaria_irq0a);
|
||||
DECLARE_WRITE_LINE_MEMBER(zaccaria_irq0b);
|
||||
DECLARE_READ8_MEMBER(zaccaria_port0a_r);
|
||||
DECLARE_WRITE8_MEMBER(zaccaria_port0a_w);
|
||||
DECLARE_WRITE8_MEMBER(zaccaria_port0b_w);
|
||||
// sound control ports
|
||||
virtual DECLARE_WRITE8_MEMBER(csound1_w) override;
|
||||
|
||||
// PIA handlers
|
||||
DECLARE_READ8_MEMBER(pia_porta_r);
|
||||
DECLARE_WRITE8_MEMBER(pia_porta_w);
|
||||
DECLARE_WRITE8_MEMBER(pia_portb_w);
|
||||
DECLARE_WRITE_LINE_MEMBER(pia_irqa);
|
||||
DECLARE_WRITE_LINE_MEMBER(pia_irqb);
|
||||
|
||||
// PSG handlers
|
||||
DECLARE_WRITE8_MEMBER(psg1_porta_w);
|
||||
DECLARE_READ8_MEMBER(psg1_portb_r);
|
||||
|
||||
// periodic signal generators
|
||||
INTERRUPT_GEN_MEMBER(zaccaria_cb1_toggle);
|
||||
INTERRUPT_GEN_MEMBER(cb1_toggle);
|
||||
|
||||
protected:
|
||||
|
||||
// initialisation/startup
|
||||
virtual void machine_start() override;
|
||||
virtual void machine_reset() override;
|
||||
|
||||
// sound board devices
|
||||
required_device<pia6821_device> m_pia;
|
||||
required_device<cpu_device> m_audiocpu;
|
||||
required_device<ay8910_device> m_ay1;
|
||||
required_device<ay8910_device> m_ay2;
|
||||
|
||||
required_device<pia6821_device> m_pia;
|
||||
required_device<ay8910_device> m_psg1;
|
||||
required_device<ay8910_device> m_psg2;
|
||||
|
||||
// control line states
|
||||
int m_active_8910;
|
||||
int m_port0a;
|
||||
int m_last_port0b;
|
||||
int m_cb1_toggle;
|
||||
bool m_cb1;
|
||||
};
|
||||
|
||||
@ -53,7 +53,8 @@
|
||||
up indicating when player 2 is playing. In a cocktail cabinet this
|
||||
goes to an "image commutation board". It's not connected to
|
||||
anything in an upright cabinet. The "image commutation board" must
|
||||
flip the image somehow, presumably by dark magic.
|
||||
flip the image somehow, presumably by reversing the deflection coil
|
||||
connections.
|
||||
|
||||
There are still issues with horizontal alignment between layers. I
|
||||
have the schematic, yet I really can't understand where these issues
|
||||
|
||||
Loading…
Reference in New Issue
Block a user