mirror of
https://github.com/7800-devtools/a7800.git
synced 2024-06-16 11:07:59 -04:00
xm updates, first pass
This commit is contained in:
msaarna@gmail.com
parent
9038f6346d
commit
19f1ca5ad4
2441
hash/a7800.xml
2441
hash/a7800.xml
File diff suppressed because it is too large
Load diff
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@ -23,8 +23,8 @@ if (BUSES["A7800"]~=null) then
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MAME_DIR .. "src/devices/bus/a7800/rom.h",
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MAME_DIR .. "src/devices/bus/a7800/hiscore.cpp",
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MAME_DIR .. "src/devices/bus/a7800/hiscore.h",
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MAME_DIR .. "src/devices/bus/a7800/xboard.cpp",
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MAME_DIR .. "src/devices/bus/a7800/xboard.h",
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MAME_DIR .. "src/devices/bus/a7800/xm.cpp",
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MAME_DIR .. "src/devices/bus/a7800/xm.h",
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MAME_DIR .. "src/devices/bus/a7800/cpuwiz.cpp",
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MAME_DIR .. "src/devices/bus/a7800/cpuwiz.h",
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}
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@ -6,7 +6,7 @@
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#pragma once
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#include "rom.h"
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#include "xboard.h"
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#include "xm.h"
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#include "hiscore.h"
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#include "cpuwiz.h"
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@ -21,7 +21,6 @@ static SLOT_INTERFACE_START(a7800_cart)
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SLOT_INTERFACE_INTERNAL("a78_abs", A78_ROM_ABSOLUTE)
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SLOT_INTERFACE_INTERNAL("a78_act", A78_ROM_ACTIVISION)
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SLOT_INTERFACE_INTERNAL("a78_hsc", A78_HISCORE)
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SLOT_INTERFACE_INTERNAL("a78_xboard", A78_XBOARD) // the actual XBoarD expansion (as passthru)
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SLOT_INTERFACE_INTERNAL("a78_xm", A78_XM) // the actual XM expansion (as passthru)
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SLOT_INTERFACE_INTERNAL("a78_megacart", A78_ROM_MEGACART)
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SLOT_INTERFACE_INTERNAL("a78_versa", A78_ROM_VERSABOARD)
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@ -300,7 +300,6 @@ static const a78_slot slot_list[] =
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{ A78_ABSOLUTE, "a78_abs" },
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{ A78_ACTIVISION, "a78_act" },
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{ A78_HSC, "a78_hsc" },
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{ A78_XB_BOARD, "a78_xboard" },
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{ A78_XM_BOARD, "a78_xm" },
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{ A78_MEGACART, "a78_megacart" },
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{ A78_VERSABOARD, "a78_versa" },
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@ -440,7 +439,7 @@ image_init_result a78_cart_slot_device::call_load()
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if (head[63])
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{
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osd_printf_info("This cart requires XBoarD / XM expansion\n");
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osd_printf_info("This cart requires XM expansion\n");
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osd_printf_info("Run it through the expansion to exploit this feature.\n");
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}
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@ -453,7 +452,7 @@ image_init_result a78_cart_slot_device::call_load()
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m_cart->ram_alloc(0x4000);
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if (m_type == A78_MEGACART || (m_type >= A78_VERSABOARD && m_type <= A78_VERSA_POK450))
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m_cart->ram_alloc(0x8000);
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if (m_type == A78_XB_BOARD || m_type == A78_XM_BOARD)
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if (m_type == A78_XM_BOARD)
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m_cart->ram_alloc(0x20000);
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if (m_type == A78_HSC || m_type == A78_XM_BOARD)
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{
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@ -1,230 +0,0 @@
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// license:BSD-3-Clause
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// copyright-holders:Fabio Priuli
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/***********************************************************************************************************
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A7800 XBoarD & XM expansions emulation
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The XBoarD should be socketed in the A7800 pcb in place of the Maria chip.
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It adds to the system additional 128K of RAM and an onboard pokey.
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The XM seems to work the same as XBoarD, but it also features HighScore savings
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(using the same ROM as Atari HighScore cart)
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Currently, we emulate both of these as a passthru cart, even if not 100% accurate for the XBoarD
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Memory map:
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POKEY1 $0450 $045F 16 bytes
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POKEY2* $0460 $046F 16 bytes
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XCTRL $0470 $047F 1 byte
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RAM $4000 $7FFF 16384 bytes
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XCTRL Bit Description
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+-------------------------------+
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| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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+-------------------------------+
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| | | | | | | |
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| | | | | | | +-- Bank select bit 0 \
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| | | | | | +------ Bank select bit 1 | Totally 128 KByte in 16 KByte banks
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| | | | | +---------- Bank select bit 2 /
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| | | | +-------------- Enable memory bit (1 = Memory enabled, 0 after power on)
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| | | +------------------ Enable POKEY bit** (1 = POKEY enabled, 0 after power on)
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| | |
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NA NA NA = Not Available or Not Used
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* = Can be mounted piggy back on the first POKEY. Description how to do this will come when i have tried it out.
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** This bit controls both POKEY chip select signals.
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TODO:
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- verify what happens when 2 POKEYs are present
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***********************************************************************************************************/
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#include "emu.h"
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#include "xboard.h"
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#include "a78_carts.h"
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#include "speaker.h"
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//-------------------------------------------------
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// constructor
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//-------------------------------------------------
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DEFINE_DEVICE_TYPE(A78_XBOARD, a78_xboard_device, "a78_xboard", "Atari 7800 XBoarD expansion")
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DEFINE_DEVICE_TYPE(A78_XM, a78_xm_device, "a78_xm", "Atari 7800 XM expansion module")
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a78_xboard_device::a78_xboard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: a78_rom_device(mconfig, type, tag, owner, clock)
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, m_xbslot(*this, "xb_slot")
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, m_pokey(*this, "xb_pokey")
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, m_reg(0), m_ram_bank(0)
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{
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}
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a78_xboard_device::a78_xboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: a78_xboard_device(mconfig, A78_XBOARD, tag, owner, clock)
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{
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}
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a78_xm_device::a78_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: a78_xboard_device(mconfig, A78_XM, tag, owner, clock)
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, m_ym(*this, "xm_ym2151"), m_ym_enabled(0)
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{
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}
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void a78_xboard_device::device_start()
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{
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save_item(NAME(m_reg));
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save_item(NAME(m_ram_bank));
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}
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void a78_xboard_device::device_reset()
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{
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m_reg = 0;
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m_ram_bank = 0;
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}
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void a78_xm_device::device_start()
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{
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save_item(NAME(m_reg));
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save_item(NAME(m_ram_bank));
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save_item(NAME(m_ym_enabled));
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}
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void a78_xm_device::device_reset()
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{
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m_reg = 0;
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m_ram_bank = 0;
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m_ym_enabled = 0;
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}
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MACHINE_CONFIG_MEMBER( a78_xboard_device::device_add_mconfig )
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MCFG_A78_CARTRIDGE_ADD("xb_slot", a7800_cart, nullptr)
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MCFG_SPEAKER_STANDARD_MONO("xb_speaker")
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MCFG_SOUND_ADD("xb_pokey", POKEY, XTAL_14_31818MHz/8)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
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MACHINE_CONFIG_END
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MACHINE_CONFIG_MEMBER( a78_xm_device::device_add_mconfig )
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MCFG_A78_CARTRIDGE_ADD("xb_slot", a7800_cart, nullptr)
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MCFG_SPEAKER_STANDARD_MONO("xb_speaker")
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MCFG_SOUND_ADD("xb_pokey", POKEY, XTAL_14_31818MHz/8)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
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MCFG_SOUND_ADD("xm_ym2151", YM2151, XTAL_14_31818MHz/4)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
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MACHINE_CONFIG_END
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/*-------------------------------------------------
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mapper specific handlers
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-------------------------------------------------*/
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/*-------------------------------------------------
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XBoarD: passthru + 128K RAM + POKEY
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-------------------------------------------------*/
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READ8_MEMBER(a78_xboard_device::read_40xx)
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{
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if (BIT(m_reg, 3) && offset < 0x4000)
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return m_ram[offset + (m_ram_bank * 0x4000)];
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else
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return m_xbslot->read_40xx(space, offset);
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}
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WRITE8_MEMBER(a78_xboard_device::write_40xx)
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{
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if (BIT(m_reg, 3) && offset < 0x4000)
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m_ram[offset + (m_ram_bank * 0x4000)] = data;
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else
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m_xbslot->write_40xx(space, offset, data);
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}
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READ8_MEMBER(a78_xboard_device::read_04xx)
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{
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if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
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return m_pokey->read(space, offset & 0x0f);
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else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
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return m_xbslot->read_04xx(space, offset - 0x10); // access second POKEY
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else
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return 0xff;
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}
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WRITE8_MEMBER(a78_xboard_device::write_04xx)
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{
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if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
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m_pokey->write(space, offset & 0x0f, data);
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else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
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m_xbslot->write_04xx(space, offset - 0x10, data); // access second POKEY
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else if (offset >= 0x70 && offset < 0x80)
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{
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m_reg = data;
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m_ram_bank = m_reg & 7;
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}
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}
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/*-------------------------------------------------
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XM: Same as above but also featuring High Score savings
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-------------------------------------------------*/
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READ8_MEMBER(a78_xm_device::read_10xx)
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{
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return m_nvram[offset];
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}
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WRITE8_MEMBER(a78_xm_device::write_10xx)
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{
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m_nvram[offset] = data;
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}
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READ8_MEMBER(a78_xm_device::read_30xx)
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{
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return m_rom[offset];
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}
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READ8_MEMBER(a78_xm_device::read_04xx)
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{
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if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
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return m_pokey->read(space, offset & 0x0f);
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else if (m_ym_enabled && offset >= 0x60 && offset <= 0x61)
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return m_ym->read(space, offset & 1);
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else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
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return m_xbslot->read_04xx(space, offset - 0x10); // access second POKEY
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else
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return 0xff;
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}
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WRITE8_MEMBER(a78_xm_device::write_04xx)
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{
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if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
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m_pokey->write(space, offset & 0x0f, data);
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else if (m_ym_enabled && offset >= 0x60 && offset <= 0x61)
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m_ym->write(space, offset & 1, data);
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else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
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m_xbslot->write_04xx(space, offset - 0x10, data); // access second POKEY
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else if (offset >= 0x70 && offset < 0x80)
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{
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//printf("regs 0x%X\n", data);
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if (data == 0x84)
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m_ym_enabled = 1;
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m_reg = data;
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m_ram_bank = m_reg & 7;
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}
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}
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187
src/devices/bus/a7800/xm.cpp
Normal file
187
src/devices/bus/a7800/xm.cpp
Normal file
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@ -0,0 +1,187 @@
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// license:BSD-3-Clause
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// copyright-holders:Fabio Priuli, Mike Saarna
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/***********************************************************************************************************
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A7800 XM expansion module emulation
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pokey $450
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ym2151 $460 (R) FM status register
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$460 (W) FM address register
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$461 (RW) FM data register
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cntrl1 $470
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d0 rof lo on
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d1 rof hi on
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d2 0=bios,1=top slot
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d3 1=hsc on
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d4 1=pokey on
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d5 1=bank0 on 4000-5fff
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d6 1=bank1 on 6000-7fff
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d7 1=ym2151 on
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cntrl2 $478 - SALLY RAM bank 8K page multiplexer.
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d0-d3 sally ram page 0 a0-a3
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d4-d7 sally ram page 1 a0-a3
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cntrl3 $47c - MARIA RAM bank 8K page multiplexer.
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d0-d3 maria ram page 0 a0-a3
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d4-d7 maria ram page 1 a0-a3
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cntrl4 $471
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d0 1=pia on
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d1-d3 flash bank lo a1-a3
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d4-d6 flash bank hi a1-a3
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d7 1=top slot lock
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cntrl5 $472
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d0 1=48k ram enable
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d1 1=ram we# disabled
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d2 1=bios enabled (in test mode)
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d3 1=POKEY enable/disable locked
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d4 1=HSC enable/disable locked - cannot disable after enable
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d5 1=PAL HSC enabled, 0=NTSC HSC enabled - cannot disable after enable
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RAM0 $4000 $5FFF 8192 bytes
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RAM1 $6000 $7FFF 8192 bytes
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***********************************************************************************************************/
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#include "emu.h"
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#include "xm.h"
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#include "a78_carts.h"
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#include "speaker.h"
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//-------------------------------------------------
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// constructor
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//-------------------------------------------------
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DEFINE_DEVICE_TYPE(A78_XM, a78_xm_device, "a78_xm", "Atari 7800 XM expansion module")
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a78_xm_device::a78_xm_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: a78_rom_device(mconfig, type, tag, owner, clock)
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, m_xmslot(*this, "xm_slot")
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, m_pokey(*this, "xm_pokey")
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, m_ym(*this, "xm_ym2151")
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, m_cntrl1(0), m_cntrl2(0),m_cntrl3(0),m_cntrl4(0),m_cntrl5(0)
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{
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}
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a78_xm_device::a78_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: a78_xm_device(mconfig, A78_XM, tag, owner, clock)
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{
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}
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void a78_xm_device::device_start()
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{
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save_item(NAME(m_cntrl1));
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save_item(NAME(m_cntrl2));
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save_item(NAME(m_cntrl3));
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save_item(NAME(m_cntrl4));
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save_item(NAME(m_cntrl5));
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}
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void a78_xm_device::device_reset()
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{
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m_cntrl1= 0;
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m_cntrl2= 0;
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m_cntrl3= 0;
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m_cntrl4= 0;
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m_cntrl5= 0;
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}
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MACHINE_CONFIG_MEMBER( a78_xm_device::device_add_mconfig )
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MCFG_A78_CARTRIDGE_ADD("xm_slot", a7800_cart, nullptr)
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MCFG_SPEAKER_STANDARD_MONO("xm_speaker")
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MCFG_SOUND_ADD("xm_pokey", POKEY, XTAL_14_31818MHz/8)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xm_speaker", 1.00)
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MCFG_SOUND_ADD("xm_ym2151", YM2151, XTAL_14_31818MHz/4)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xm_speaker", 1.00)
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MACHINE_CONFIG_END
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/*-------------------------------------------------
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mapper specific handlers
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||||
-------------------------------------------------*/
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READ8_MEMBER(a78_xm_device::read_40xx)
|
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{
|
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if (BIT(m_cntrl1, 5) && offset < 0x2000)
|
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return m_ram[ (offset + ((m_cntrl2&15) * 0x4000)) ];
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else if (BIT(m_cntrl1, 6) && offset >0x1ffff && offset < 0x4000)
|
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return m_ram[ (offset + (((m_cntrl2>>4)&15) * 0x4000)) ];
|
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else
|
||||
return m_xmslot->read_40xx(space, offset);
|
||||
// TODO: implement ROF bits in cntrl1
|
||||
}
|
||||
|
||||
WRITE8_MEMBER(a78_xm_device::write_40xx)
|
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{
|
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if (BIT(m_cntrl1, 5) && offset < 0x2000)
|
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m_ram[ (offset + ((m_cntrl2&15) * 0x4000)) ] = data;
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else if (BIT(m_cntrl1, 6) && offset >0x1ffff && offset < 0x4000)
|
||||
m_ram[ (offset + (((m_cntrl2>>4)&15) * 0x4000)) ] = data;
|
||||
else
|
||||
m_xmslot->write_40xx(space, offset, data);
|
||||
// TODO: implement ROF bits in cntrl1
|
||||
}
|
||||
|
||||
|
||||
READ8_MEMBER(a78_xm_device::read_10xx)
|
||||
{
|
||||
if (BIT(m_cntrl1, 3))
|
||||
return m_nvram[offset];
|
||||
else
|
||||
return 0xff;
|
||||
}
|
||||
|
||||
WRITE8_MEMBER(a78_xm_device::write_10xx)
|
||||
{
|
||||
if (BIT(m_cntrl1, 3))
|
||||
m_nvram[offset] = data;
|
||||
}
|
||||
|
||||
READ8_MEMBER(a78_xm_device::read_30xx)
|
||||
{
|
||||
if (BIT(m_cntrl1, 3))
|
||||
return m_rom[offset];
|
||||
else
|
||||
return 0xff;
|
||||
}
|
||||
|
||||
READ8_MEMBER(a78_xm_device::read_04xx)
|
||||
{
|
||||
if (BIT(m_cntrl1, 4) && offset >= 0x50 && offset < 0x60)
|
||||
return m_pokey->read(space, offset & 0x0f);
|
||||
else if (BIT(m_cntrl1, 7) && offset >= 0x60 && offset <= 0x61)
|
||||
return m_ym->read(space, offset & 1);
|
||||
else
|
||||
return 0xff;
|
||||
}
|
||||
|
||||
WRITE8_MEMBER(a78_xm_device::write_04xx)
|
||||
{
|
||||
if (BIT(m_cntrl1, 4) && offset >= 0x50 && offset < 0x60)
|
||||
m_pokey->write(space, offset & 0x0f, data);
|
||||
else if (BIT(m_cntrl1, 7) && offset >= 0x60 && offset <= 0x61)
|
||||
m_ym->write(space, offset & 1, data);
|
||||
else if (offset == 0x70)
|
||||
m_cntrl1 = data;
|
||||
else if (offset == 0x78)
|
||||
m_cntrl2 = data;
|
||||
else if (offset == 0x7c)
|
||||
m_cntrl3 = data;
|
||||
else if (offset == 0x71)
|
||||
m_cntrl4 = data;
|
||||
else if (offset == 0x72)
|
||||
m_cntrl5 = data;
|
||||
// else do nothing
|
||||
}
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
// license:BSD-3-Clause
|
||||
// copyright-holders:Fabio Priuli
|
||||
#ifndef MAME_BUS_A7800_XBOARD_H
|
||||
#define MAME_BUS_A7800_XBOARD_H
|
||||
#ifndef MAME_BUS_A7800_XM_H
|
||||
#define MAME_BUS_A7800_XM_H
|
||||
|
||||
#pragma once
|
||||
|
||||
|
|
@ -11,36 +11,9 @@
|
|||
#include "sound/ym2151.h"
|
||||
|
||||
|
||||
// ======================> a78_xboard_device
|
||||
|
||||
class a78_xboard_device : public a78_rom_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
a78_xboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
// reading and writing
|
||||
virtual DECLARE_READ8_MEMBER(read_04xx) override;
|
||||
virtual DECLARE_WRITE8_MEMBER(write_04xx) override;
|
||||
virtual DECLARE_READ8_MEMBER(read_40xx) override;
|
||||
virtual DECLARE_WRITE8_MEMBER(write_40xx) override;
|
||||
|
||||
protected:
|
||||
a78_xboard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
|
||||
required_device<a78_cart_slot_device> m_xbslot;
|
||||
required_device<pokey_device> m_pokey;
|
||||
int m_reg, m_ram_bank;
|
||||
};
|
||||
|
||||
|
||||
// ======================> a78_xm_device
|
||||
|
||||
class a78_xm_device : public a78_xboard_device
|
||||
class a78_xm_device : public a78_rom_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
|
|
@ -49,24 +22,32 @@ public:
|
|||
// reading and writing
|
||||
virtual DECLARE_READ8_MEMBER(read_04xx) override;
|
||||
virtual DECLARE_WRITE8_MEMBER(write_04xx) override;
|
||||
virtual DECLARE_READ8_MEMBER(read_40xx) override;
|
||||
virtual DECLARE_WRITE8_MEMBER(write_40xx) override;
|
||||
virtual DECLARE_READ8_MEMBER(read_10xx) override;
|
||||
virtual DECLARE_WRITE8_MEMBER(write_10xx) override;
|
||||
virtual DECLARE_READ8_MEMBER(read_30xx) override;
|
||||
|
||||
protected:
|
||||
a78_xm_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
|
||||
required_device<a78_cart_slot_device> m_xmslot;
|
||||
required_device<pokey_device> m_pokey;
|
||||
required_device<ym2151_device> m_ym;
|
||||
int m_ym_enabled;
|
||||
int m_cntrl1;
|
||||
int m_cntrl2;
|
||||
int m_cntrl3;
|
||||
int m_cntrl4;
|
||||
int m_cntrl5;
|
||||
};
|
||||
|
||||
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(A78_XBOARD, a78_xboard_device)
|
||||
DECLARE_DEVICE_TYPE(A78_XM, a78_xm_device)
|
||||
|
||||
|
||||
#endif // MAME_BUS_A7800_XBOARD_H
|
||||
#endif // MAME_BUS_A7800_XM_H
|
||||
|
|
@ -1123,7 +1123,6 @@ void a7800_state::machine_start()
|
|||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x1000, 0x17ff, read8_delegate(FUNC(a78_cart_slot_device::read_10xx),(a78_cart_slot_device*)m_cart), write8_delegate(FUNC(a78_cart_slot_device::write_10xx),(a78_cart_slot_device*)m_cart));
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x3000, 0x3fff, read8_delegate(FUNC(a78_cart_slot_device::read_30xx),(a78_cart_slot_device*)m_cart), write8_delegate(FUNC(a78_cart_slot_device::write_30xx),(a78_cart_slot_device*)m_cart));
|
||||
break;
|
||||
case A78_XB_BOARD:
|
||||
case A78_TYPE0_POK450:
|
||||
case A78_TYPE1_POK450:
|
||||
case A78_TYPE6_POK450:
|
||||
|
|
@ -1417,4 +1416,4 @@ CONS( 1986, a7800u1, a7800, 0, a7800u1_ntsc, a7800, a7800_state, a78
|
|||
CONS( 1986, a7800u2, a7800, 0, a7800u2_ntsc, a7800, a7800_state, a7800u2_ntsc, "Atari", "Atari 7800 (NTSC) Hot", MACHINE_SUPPORTS_SAVE )
|
||||
CONS( 1986, a7800p, a7800, 0, a7800_pal, a7800, a7800_state, a7800_pal, "Atari", "Atari 7800 (PAL) Cool", MACHINE_SUPPORTS_SAVE )
|
||||
CONS( 1986, a7800pu1, a7800, 0, a7800u1_pal, a7800, a7800_state, a7800u1_pal, "Atari", "Atari 7800 (PAL) Warm", MACHINE_SUPPORTS_SAVE )
|
||||
CONS( 1986, a7800pu2, a7800, 0, a7800u2_pal, a7800, a7800_state, a7800u2_pal, "Atari", "Atari 7800 (PAL) Hot", MACHINE_SUPPORTS_SAVE )
|
||||
CONS( 1986, a7800pu2, a7800, 0, a7800u2_pal, a7800, a7800_state, a7800u2_pal, "Atari", "Atari 7800 (PAL) Hot", MACHINE_SUPPORTS_SAVE )
|
||||
|
|
|
|||
Loading…
Reference in a new issue