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// license:BSD-3-Clause
// copyright-holders:Carl
#include "pcd.h"
#include "cpu/mcs51/mcs51.h"
#include "cpu/mcs48/mcs48.h"
const device_type PCD_VIDEO = &device_creator<pcd_video_device>;
const device_type PCX_VIDEO = &device_creator<pcx_video_device>;
pcdx_video_device::pcdx_video_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) :
device_t(mconfig, type, name, tag, owner, clock, shortname, source),
m_maincpu(*this, ":maincpu"),
m_mcu(*this, "graphics"),
m_crtc(*this, "crtc"),
m_palette(*this, "palette"),
m_gfxdecode(*this, "gfxdecode")
{
}
pcd_video_device::pcd_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
pcdx_video_device(mconfig, PCD_VIDEO, "Siemens PC-D Video", tag, owner, clock, "pcd_video", __FILE__),
m_vram(32*1024),
m_charram(8*1024)
{
}
pcx_video_device::pcx_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
pcdx_video_device(mconfig, PCX_VIDEO, "Siemens PC-X Video", tag, owner, clock, "pcx_video", __FILE__),
device_serial_interface(mconfig, *this),
m_vram(4*1024),
m_charrom(*this, "char"),
m_pic2(*this, ":pic2"),
m_txd_handler(*this)
{
}
ROM_START( pcd_video )
ROM_REGION(0x400, "graphics", 0)
ROM_LOAD("s36361-d321-v1.bin", 0x000, 0x400, CRC(69baeb2a) SHA1(98b9cd0f38c51b4988a3aed0efcf004bedd115ff))
ROM_END
const rom_entry *pcd_video_device::device_rom_region() const
{
return ROM_NAME( pcd_video );
}
ROM_START( pcx_video )
ROM_REGION(0x2000, "char", 0)
ROM_LOAD("d12-graka.bin", 0x0000, 0x2000, CRC(e4933c16) SHA1(932ae1f0cd2b029b7f5fc3d2d1679e70b25c0828))
ROM_REGION(0x6000, "graphics", 0)
ROM_LOAD("d40-graka.bin", 0x0000, 0x2000, CRC(dce48252) SHA1(0d9a575b2d001168a36864d7bd5db1c3aca5fb8d))
ROM_LOAD("d39-graka.bin", 0x4000, 0x2000, CRC(02920e25) SHA1(145a6648d75c1dc4788f9bc7790281ef7e8f8426))
ROM_END
const rom_entry *pcx_video_device::device_rom_region() const
{
return ROM_NAME( pcx_video );
}
static const gfx_layout pcd_charlayout =
{
8, 14, /* 8 x 14 characters */
512, /* 512 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8 },
8*16
};
static GFXDECODE_START( pcx )
GFXDECODE_ENTRY( "char", 0x0000, pcd_charlayout, 0, 1 )
GFXDECODE_END
static MACHINE_CONFIG_FRAGMENT( pcd_video )
MCFG_CPU_ADD("graphics", I8741, XTAL_16MHz/2)
MCFG_DEVICE_DISABLE()
// video hardware
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_SIZE(640, 350)
MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 349)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_UPDATE_DEVICE("crtc", scn2674_device, screen_update)
MCFG_GFXDECODE_ADD("gfxdecode", "palette", empty)
MCFG_PALETTE_ADD("palette", 3)
MCFG_PALETTE_INIT_OWNER(pcdx_video_device, pcdx)
MCFG_SCN2674_VIDEO_ADD("crtc", 0, NULL);
MCFG_SCN2674_TEXT_CHARACTER_WIDTH(8)
MCFG_SCN2674_GFX_CHARACTER_WIDTH(16)
MCFG_SCN2674_DRAW_CHARACTER_CALLBACK_OWNER(pcd_video_device, display_pixels)
MCFG_VIDEO_SET_SCREEN("screen")
MACHINE_CONFIG_END
machine_config_constructor pcd_video_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( pcd_video );
}
static ADDRESS_MAP_START( pcx_vid_map, AS_PROGRAM, 8, pcx_video_device )
AM_RANGE(0x0000, 0x5fff) AM_ROM AM_REGION("graphics", 0)
ADDRESS_MAP_END
static ADDRESS_MAP_START( pcx_vid_io, AS_IO, 8, pcx_video_device )
AM_RANGE(0x8000, 0x8007) AM_DEVREADWRITE("crtc", scn2674_device, read, write)
AM_RANGE(0x8008, 0x8008) AM_READ(unk_r)
AM_RANGE(0xa000, 0xa001) AM_READWRITE(vram_latch_r, vram_latch_w)
AM_RANGE(0xa002, 0xa003) AM_READWRITE(term_mcu_r, term_mcu_w)
AM_RANGE(0xc000, 0xc7ff) AM_RAM
AM_RANGE(MCS51_PORT_P1, MCS51_PORT_P1) AM_WRITE(p1_w)
ADDRESS_MAP_END
static ADDRESS_MAP_START( pcx_vram, AS_0, 8, pcx_video_device )
AM_RANGE(0x0000, 0x07ff) AM_READWRITE(vram_r, vram_w)
ADDRESS_MAP_END
static MACHINE_CONFIG_FRAGMENT( pcx_video )
MCFG_CPU_ADD("graphics", I8031, XTAL_24MHz/2)
MCFG_CPU_PROGRAM_MAP(pcx_vid_map)
MCFG_CPU_IO_MAP(pcx_vid_io)
// video hardware
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_SIZE(640, 350)
MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 349)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_UPDATE_DEVICE("crtc", scn2674_device, screen_update)
MCFG_GFXDECODE_ADD("gfxdecode", "palette", pcx)
MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
MCFG_SCN2674_VIDEO_ADD("crtc", 0, INPUTLINE("graphics", MCS51_INT0_LINE));
MCFG_SCN2674_TEXT_CHARACTER_WIDTH(8)
MCFG_SCN2674_GFX_CHARACTER_WIDTH(16)
MCFG_SCN2674_DRAW_CHARACTER_CALLBACK_OWNER(pcx_video_device, display_pixels)
MCFG_VIDEO_SET_SCREEN("screen")
MCFG_DEVICE_ADDRESS_MAP(AS_0, pcx_vram)
MACHINE_CONFIG_END
machine_config_constructor pcx_video_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( pcx_video );
}
SCN2674_DRAW_CHARACTER_MEMBER(pcd_video_device::display_pixels)
{
address <<= 1;
if(lg)
{
UINT16 data = m_vram[address + 1] | (m_vram[address] << 8);
for(int i = 0; i < 16; i++)
bitmap.pix32(y, x + i) = m_palette->pen((data & (1 << (15 - i))) ? 1 : 0);
}
else
{
UINT8 data, attr;
int bgnd = 0;
data = m_charram[m_vram[address] * 16 + linecount];
attr = m_vram[address + 1];
if(cursor && blink)
data = 0xff;
if(ul && (attr & 0x20))
data = 0xff;
if(attr & 8)
bgnd = 2;
if(attr & 0x10)
data = ~data;
for(int i = 0; i < 8; i++)
bitmap.pix32(y, x + i) = m_palette->pen((data & (1 << (7 - i))) ? 1 : bgnd);
}
}
SCN2674_DRAW_CHARACTER_MEMBER(pcx_video_device::display_pixels)
{
UINT8 data;
address <<= 1;
data = m_charrom[m_vram[address] * 16 + linecount + (m_vram[address + 1] & 0x20 ? 4096 : 0)];
if(cursor && blink)
data = 0xff;
if(m_p1 & 0x20)
data = ~data;
for(int i = 0; i < 8; i++)
bitmap.pix32(y, x + i) = m_palette->pen((data & (1 << (7 - i))) ? 1 : 0);
}
PALETTE_INIT_MEMBER(pcdx_video_device, pcdx)
{
palette.set_pen_color(0,rgb_t::black);
palette.set_pen_color(1,rgb_t::white);
palette.set_pen_color(2,rgb_t(128,128,128));
}
WRITE8_MEMBER(pcd_video_device::vram_w)
{
if(m_vram_sw)
m_vram[offset] = data;
else if(!(offset & 1))
{
offset >>= 1;
m_charram[offset & 0x1fff] = data;
m_gfxdecode->gfx(0)->mark_dirty(offset/16);
}
}
READ8_MEMBER(pcd_video_device::vram_r)
{
return m_vram[offset];
}
WRITE8_MEMBER(pcd_video_device::vram_sw_w)
{
m_vram_sw = data & 1;
}
READ8_MEMBER(pcd_video_device::mcu_r)
{
return 0x20;
}
WRITE8_MEMBER(pcd_video_device::mcu_w)
{
}
READ8_MEMBER(pcx_video_device::term_r)
{
switch(offset)
{
case 0:
m_pic2->ir0_w(CLEAR_LINE);
m_term_stat &= ~2;
return m_term_key;
case 1:
m_pic2->ir0_w(CLEAR_LINE);
return m_term_stat >> 1;
}
return 0xff;
}
WRITE8_MEMBER(pcx_video_device::term_w)
{
if(!offset)
{
m_mcu->set_input_line(MCS51_INT1_LINE, ASSERT_LINE);
m_term_char = data;
m_term_stat |= 4;
}
}
READ8_MEMBER(pcx_video_device::term_mcu_r)
{
switch(offset)
{
case 0:
m_mcu->set_input_line(MCS51_INT1_LINE, CLEAR_LINE);
m_pic2->ir0_w(ASSERT_LINE);
m_term_stat &= ~4;
return m_term_char;
case 1:
return m_term_stat;
}
return 0;
}
WRITE8_MEMBER(pcx_video_device::term_mcu_w)
{
if(!offset)
{
m_term_key = data;
m_pic2->ir0_w(ASSERT_LINE);
m_term_stat |= 2;
}
}
WRITE8_MEMBER(pcx_video_device::vram_w)
{
offset <<= 1;
m_vram[offset] = m_vram_latch_w[0];
m_vram[offset+1] = m_vram_latch_w[1];
}
READ8_MEMBER(pcx_video_device::vram_r)
{
offset <<= 1;
m_vram_latch_r[0] = m_vram[offset];
m_vram_latch_r[1] = m_vram[offset+1];
return m_vram[offset];
}
WRITE8_MEMBER(pcx_video_device::vram_latch_w)
{
m_vram_latch_w[offset] = data;
}
READ8_MEMBER(pcx_video_device::vram_latch_r)
{
return m_vram_latch_r[offset];
}
READ8_MEMBER(pcdx_video_device::detect_r)
{
return 0;
}
WRITE8_MEMBER(pcdx_video_device::detect_w)
{
}
READ8_MEMBER(pcx_video_device::unk_r)
{
return 0x80;
}
WRITE8_MEMBER(pcx_video_device::p1_w)
{
m_p1 = data;
}
void pcd_video_device::device_start()
{
m_maincpu->space(AS_IO).install_readwrite_handler(0xfb00, 0xfb01, 0, 0, read8_delegate(FUNC(pcdx_video_device::detect_r), this), write8_delegate(FUNC(pcdx_video_device::detect_w), this), 0xff00);
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xf0000, 0xf7fff, 0, 0, read8_delegate(FUNC(pcd_video_device::vram_r), this), write8_delegate(FUNC(pcd_video_device::vram_w), this), 0xffff);
m_gfxdecode->set_gfx(0, global_alloc(gfx_element(machine().device<palette_device>("palette"), pcd_charlayout, &m_charram[0], 0, 1, 0)));
}
void pcd_video_device::device_reset()
{
m_vram_sw = 1;
}
DEVICE_ADDRESS_MAP_START(map, 16, pcd_video_device)
AM_RANGE(0x00, 0x0f) AM_DEVWRITE8("crtc", scn2674_device, write, 0x00ff)
AM_RANGE(0x00, 0x0f) AM_DEVREAD8("crtc", scn2674_device, read, 0xff00)
AM_RANGE(0x20, 0x21) AM_WRITE8(vram_sw_w, 0x00ff)
AM_RANGE(0x30, 0x33) AM_READWRITE8(mcu_r, mcu_w, 0x00ff)
ADDRESS_MAP_END
void pcx_video_device::device_start()
{
mcs51_cpu_device *mcu = downcast<mcs51_cpu_device *>(m_mcu.target());
m_maincpu->space(AS_IO).install_readwrite_handler(0xfb00, 0xfb01, 0, 0, read8_delegate(FUNC(pcdx_video_device::detect_r), this), write8_delegate(FUNC(pcdx_video_device::detect_w), this), 0x00ff);
m_txd_handler.resolve_safe();
// set serial callbacks
mcu->i8051_set_serial_tx_callback(WRITE8_DELEGATE(pcx_video_device, tx_callback));
mcu->i8051_set_serial_rx_callback(READ8_DELEGATE(pcx_video_device, rx_callback));
set_data_frame(1, 8, PARITY_NONE, STOP_BITS_1);
set_rate(600*2); // FIXME: fix the keyboard when the mc2661 baud rate calc is fixed
}
void pcx_video_device::device_reset()
{
m_term_key = 0;
m_term_stat = 0;
transmit_register_reset();
receive_register_reset();
m_txd_handler(1);
}
DEVICE_ADDRESS_MAP_START(map, 16, pcx_video_device)
AM_RANGE(0x0, 0xf) AM_READWRITE8(term_r, term_w, 0xffff)
ADDRESS_MAP_END
READ8_MEMBER(pcx_video_device::rx_callback)
{
return get_received_char();
}
WRITE8_MEMBER(pcx_video_device::tx_callback)
{
transmit_register_setup(data);
}
void pcx_video_device::tra_callback()
{
m_txd_handler(transmit_register_get_data_bit());
}
void pcx_video_device::rcv_complete()
{
receive_register_extract();
m_mcu->set_input_line(MCS51_RX_LINE, ASSERT_LINE);
m_mcu->set_input_line(MCS51_RX_LINE, CLEAR_LINE);
}
void pcx_video_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
device_serial_interface::device_timer(timer, id, param, ptr);
}
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