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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Logotron Sprite Board
**********************************************************************/
#include "emu.h"
#include "sprite.h"
#include "screen.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(BBC_SPRITE, bbc_sprite_device, "bbc_sprite", "Logotron Sprite Board");
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void bbc_sprite_device::device_add_mconfig(machine_config &config)
{
TMS9129(config, m_vdp, 10.738635_MHz_XTAL);
m_vdp->int_callback().set(DEVICE_SELF_OWNER, FUNC(bbc_1mhzbus_slot_device::irq_w));
m_vdp->set_screen("screen");
m_vdp->set_vram_size(0x4000);
SCREEN(config, "screen", SCREEN_TYPE_RASTER);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// bbc_sprite_device - constructor
//-------------------------------------------------
bbc_sprite_device::bbc_sprite_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock)
: device_t(mconfig, BBC_SPRITE, tag, owner, clock)
, device_bbc_1mhzbus_interface(mconfig, *this)
, m_vdp(*this, "vdp")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void bbc_sprite_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void bbc_sprite_device::device_reset()
{
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
uint8_t bbc_sprite_device::fred_r(offs_t offset)
{
uint8_t data = 0xff;
switch (offset)
{
case 0xa0:
data = m_vdp->vram_read();
break;
case 0xa2:
data = m_vdp->register_read();
break;
}
return data;
}
void bbc_sprite_device::fred_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case 0xa1:
m_vdp->vram_write(data);
break;
case 0xa3:
m_vdp->register_write(data);
break;
}
}
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