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https://github.com/holub/mame
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dragon.cpp: Added Premier Sprites board.
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@ -2960,6 +2960,8 @@ if (BUSES["COCO"]~=null) then
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MAME_DIR .. "src/devices/bus/coco/dragon_fdc.h",
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MAME_DIR .. "src/devices/bus/coco/dragon_jcbsnd.cpp",
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MAME_DIR .. "src/devices/bus/coco/dragon_jcbsnd.h",
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MAME_DIR .. "src/devices/bus/coco/dragon_sprites.cpp",
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MAME_DIR .. "src/devices/bus/coco/dragon_sprites.h",
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}
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end
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118
src/devices/bus/coco/dragon_sprites.cpp
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118
src/devices/bus/coco/dragon_sprites.cpp
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@ -0,0 +1,118 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/***************************************************************************
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Premier Microsystems Sprites
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***************************************************************************/
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#include "emu.h"
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#include "dragon_sprites.h"
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#include "screen.h"
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ROM_START(dragon_sprites)
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ROM_REGION(0x2000, "eprom", 0)
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ROM_LOAD("sprites.rom", 0x0000, 0x2000, CRC(b8f54eaf) SHA1(f1288653a12ba9a17ef721d0f4867160c3ca341f))
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ROM_END
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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DEFINE_DEVICE_TYPE(DRAGON_SPRITES, dragon_sprites_device, "dragon_sprites", "Dragon Sprites")
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// dragon_sprites_device - constructor
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//-------------------------------------------------
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dragon_sprites_device::dragon_sprites_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, DRAGON_SPRITES, tag, owner, clock)
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, device_cococart_interface(mconfig, *this )
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, m_eprom(*this, "eprom")
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, m_vdp(*this, "tms9929a")
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void dragon_sprites_device::device_start()
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{
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void dragon_sprites_device::device_add_mconfig(machine_config &config)
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{
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/* video hardware */
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TMS9929A(config, m_vdp, 10.738635_MHz_XTAL); // TODO: verify crystal, manual says 10.7MHz
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m_vdp->set_screen("screen");
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m_vdp->set_vram_size(0x4000);
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m_vdp->int_callback().set(FUNC(dragon_sprites_device::nmi_w));
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SCREEN(config, "screen", SCREEN_TYPE_RASTER);
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}
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const tiny_rom_entry *dragon_sprites_device::device_rom_region() const
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{
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return ROM_NAME( dragon_sprites );
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}
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//-------------------------------------------------
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// cts_read
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//-------------------------------------------------
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READ8_MEMBER(dragon_sprites_device::cts_read)
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{
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uint8_t data = 0x00;
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switch (offset)
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{
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case 0x2000:
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data = m_vdp->vram_read();
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break;
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case 0x2001:
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data = m_vdp->register_read();
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break;
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default:
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data = m_eprom->base()[offset & 0x1fff];
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break;
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}
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return data;
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}
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//-------------------------------------------------
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// cts_write
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//-------------------------------------------------
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WRITE8_MEMBER(dragon_sprites_device::cts_write)
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{
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switch (offset)
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{
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case 0x2000:
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m_vdp->vram_write(data);
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break;
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case 0x2001:
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m_vdp->register_write(data);
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break;
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};
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}
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WRITE_LINE_MEMBER(dragon_sprites_device::nmi_w)
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{
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// set the NMI line
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set_line_value(line::NMI, state);
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}
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48
src/devices/bus/coco/dragon_sprites.h
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48
src/devices/bus/coco/dragon_sprites.h
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@ -0,0 +1,48 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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#ifndef MAME_BUS_COCO_DRAGON_SPRITES_H
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#define MAME_BUS_COCO_DRAGON_SPRITES_H
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#pragma once
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#include "cococart.h"
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#include "video/tms9928a.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> dragon_sprites_device
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class dragon_sprites_device :
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public device_t,
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public device_cococart_interface
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{
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public:
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// construction/destruction
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dragon_sprites_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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// optional information overrides
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virtual void device_add_mconfig(machine_config &config) override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual DECLARE_READ8_MEMBER(cts_read) override;
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virtual DECLARE_WRITE8_MEMBER(cts_write) override;
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private:
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required_memory_region m_eprom;
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required_device<tms9929a_device> m_vdp;
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DECLARE_WRITE_LINE_MEMBER(nmi_w);
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};
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// device type definition
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DECLARE_DEVICE_TYPE(DRAGON_SPRITES, dragon_sprites_device)
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#endif // MAME_BUS_COCO_DRAGON_SPRITES_H
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@ -22,6 +22,7 @@
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#include "bus/coco/dragon_fdc.h"
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#include "bus/coco/dragon_jcbsnd.h"
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#include "bus/coco/dragon_sprites.h"
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#include "bus/coco/coco_pak.h"
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#include "bus/coco/coco_ssc.h"
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#include "bus/coco/coco_orch90.h"
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@ -170,6 +171,7 @@ void dragon_cart(device_slot_interface &device)
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device.option_add("premier_fdc", PREMIER_FDC);
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device.option_add("sdtandy_fdc", SDTANDY_FDC);
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device.option_add("jcbsnd", DRAGON_JCBSND);
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device.option_add("sprites", DRAGON_SPRITES);
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device.option_add("ssc", COCO_SSC);
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device.option_add("orch90", COCO_ORCH90);
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device.option_add("gmc", COCO_PAK_GMC);
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