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dragon.cpp: Added Premier Sprites board.

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This commit is contained in:
Nigel Barnes 2019-05-11 17:28:14 +01:00
parent d4ab3c5549
commit e0f9fdf1f8
4 changed files with 170 additions and 0 deletions
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2
scripts/src/bus.lua
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@ -2960,6 +2960,8 @@ if (BUSES["COCO"]~=null) then
MAME_DIR .. "src/devices/bus/coco/dragon_fdc.h",
MAME_DIR .. "src/devices/bus/coco/dragon_jcbsnd.cpp",
MAME_DIR .. "src/devices/bus/coco/dragon_jcbsnd.h",
MAME_DIR .. "src/devices/bus/coco/dragon_sprites.cpp",
MAME_DIR .. "src/devices/bus/coco/dragon_sprites.h",
}
end

118
src/devices/bus/coco/dragon_sprites.cpp Normal file
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@ -0,0 +1,118 @@
// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/***************************************************************************
Premier Microsystems Sprites
***************************************************************************/
#include "emu.h"
#include "dragon_sprites.h"
#include "screen.h"
ROM_START(dragon_sprites)
ROM_REGION(0x2000, "eprom", 0)
ROM_LOAD("sprites.rom", 0x0000, 0x2000, CRC(b8f54eaf) SHA1(f1288653a12ba9a17ef721d0f4867160c3ca341f))
ROM_END
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
DEFINE_DEVICE_TYPE(DRAGON_SPRITES, dragon_sprites_device, "dragon_sprites", "Dragon Sprites")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// dragon_sprites_device - constructor
//-------------------------------------------------
dragon_sprites_device::dragon_sprites_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, DRAGON_SPRITES, tag, owner, clock)
, device_cococart_interface(mconfig, *this )
, m_eprom(*this, "eprom")
, m_vdp(*this, "tms9929a")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void dragon_sprites_device::device_start()
{
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void dragon_sprites_device::device_add_mconfig(machine_config &config)
{
/* video hardware */
TMS9929A(config, m_vdp, 10.738635_MHz_XTAL); // TODO: verify crystal, manual says 10.7MHz
m_vdp->set_screen("screen");
m_vdp->set_vram_size(0x4000);
m_vdp->int_callback().set(FUNC(dragon_sprites_device::nmi_w));
SCREEN(config, "screen", SCREEN_TYPE_RASTER);
}
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const tiny_rom_entry *dragon_sprites_device::device_rom_region() const
{
return ROM_NAME( dragon_sprites );
}
//-------------------------------------------------
// cts_read
//-------------------------------------------------
READ8_MEMBER(dragon_sprites_device::cts_read)
{
uint8_t data = 0x00;
switch (offset)
{
case 0x2000:
data = m_vdp->vram_read();
break;
case 0x2001:
data = m_vdp->register_read();
break;
default:
data = m_eprom->base()[offset & 0x1fff];
break;
}
return data;
}
//-------------------------------------------------
// cts_write
//-------------------------------------------------
WRITE8_MEMBER(dragon_sprites_device::cts_write)
{
switch (offset)
{
case 0x2000:
m_vdp->vram_write(data);
break;
case 0x2001:
m_vdp->register_write(data);
break;
};
}
WRITE_LINE_MEMBER(dragon_sprites_device::nmi_w)
{
// set the NMI line
set_line_value(line::NMI, state);
}

48
src/devices/bus/coco/dragon_sprites.h Normal file
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@ -0,0 +1,48 @@
// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
#ifndef MAME_BUS_COCO_DRAGON_SPRITES_H
#define MAME_BUS_COCO_DRAGON_SPRITES_H
#pragma once
#include "cococart.h"
#include "video/tms9928a.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> dragon_sprites_device
class dragon_sprites_device :
public device_t,
public device_cococart_interface
{
public:
// construction/destruction
dragon_sprites_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
protected:
// device-level overrides
virtual void device_start() override;
virtual DECLARE_READ8_MEMBER(cts_read) override;
virtual DECLARE_WRITE8_MEMBER(cts_write) override;
private:
required_memory_region m_eprom;
required_device<tms9929a_device> m_vdp;
DECLARE_WRITE_LINE_MEMBER(nmi_w);
};
// device type definition
DECLARE_DEVICE_TYPE(DRAGON_SPRITES, dragon_sprites_device)
#endif // MAME_BUS_COCO_DRAGON_SPRITES_H

2
src/mame/drivers/dragon.cpp
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@ -22,6 +22,7 @@
#include "bus/coco/dragon_fdc.h"
#include "bus/coco/dragon_jcbsnd.h"
#include "bus/coco/dragon_sprites.h"
#include "bus/coco/coco_pak.h"
#include "bus/coco/coco_ssc.h"
#include "bus/coco/coco_orch90.h"
@ -170,6 +171,7 @@ void dragon_cart(device_slot_interface &device)
device.option_add("premier_fdc", PREMIER_FDC);
device.option_add("sdtandy_fdc", SDTANDY_FDC);
device.option_add("jcbsnd", DRAGON_JCBSND);
device.option_add("sprites", DRAGON_SPRITES);
device.option_add("ssc", COCO_SSC);
device.option_add("orch90", COCO_ORCH90);
device.option_add("gmc", COCO_PAK_GMC);