// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************
JR-100 National / Panasonic
23/08/2010 Initial driver version
TODO:
- beeper doesn't work correctly when a key is pressed (should have
more time but it's quickly shut off), presumably there are M6802
timing bugs that causes this quirk.
****************************************************************************/
#include "emu.h"
#include "cpu/m6800/m6800.h"
#include "imagedev/cassette.h"
#include "imagedev/snapquik.h"
#include "machine/6522via.h"
#include "machine/timer.h"
#include "sound/beep.h"
#include "sound/spkrdev.h"
#include "sound/wave.h"
#include "screen.h"
#include "speaker.h"
class jr100_state : public driver_device
{
public:
jr100_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_ram(*this, "ram"),
m_pcg(*this, "pcg"),
m_vram(*this, "vram"),
m_via(*this, "via"),
m_cassette(*this, "cassette"),
m_beeper(*this, "beeper"),
m_speaker(*this, "speaker"),
m_region_maincpu(*this, "maincpu"),
m_line0(*this, "LINE0"),
m_line1(*this, "LINE1"),
m_line2(*this, "LINE2"),
m_line3(*this, "LINE3"),
m_line4(*this, "LINE4"),
m_line5(*this, "LINE5"),
m_line6(*this, "LINE6"),
m_line7(*this, "LINE7"),
m_line8(*this, "LINE8") ,
m_maincpu(*this, "maincpu") { }
required_shared_ptr<uint8_t> m_ram;
required_shared_ptr<uint8_t> m_pcg;
required_shared_ptr<uint8_t> m_vram;
uint8_t m_keyboard_line;
bool m_use_pcg;
uint8_t m_speaker_data;
uint16_t m_t1latch;
uint8_t m_beep_en;
DECLARE_WRITE8_MEMBER(jr100_via_w);
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
uint32_t screen_update_jr100(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
TIMER_DEVICE_CALLBACK_MEMBER(sound_tick);
DECLARE_READ8_MEMBER(jr100_via_read_b);
DECLARE_WRITE8_MEMBER(jr100_via_write_a);
DECLARE_WRITE8_MEMBER(jr100_via_write_b);
DECLARE_WRITE_LINE_MEMBER(jr100_via_write_cb2);
uint32_t readByLittleEndian(uint8_t *buf,int pos);
DECLARE_QUICKLOAD_LOAD_MEMBER(jr100);
void jr100(machine_config &config);
void jr100_mem(address_map &map);
protected:
required_device<via6522_device> m_via;
required_device<cassette_image_device> m_cassette;
required_device<beep_device> m_beeper;
required_device<speaker_sound_device> m_speaker;
required_memory_region m_region_maincpu;
required_ioport m_line0;
required_ioport m_line1;
required_ioport m_line2;
required_ioport m_line3;
required_ioport m_line4;
required_ioport m_line5;
required_ioport m_line6;
required_ioport m_line7;
required_ioport m_line8;
required_device<cpu_device> m_maincpu;
};
WRITE8_MEMBER(jr100_state::jr100_via_w)
{
/* ACR: beeper masking */
if(offset == 0x0b)
{
//printf("BEEP %s\n",((data & 0xe0) == 0xe0) ? "ON" : "OFF");
m_beep_en = ((data & 0xe0) == 0xe0);
if(!m_beep_en)
m_beeper->set_state(0);
}
/* T1L-L */
if(offset == 0x04)
{
m_t1latch = (m_t1latch & 0xff00) | (data & 0xff);
//printf("BEEP T1CL %02x\n",data);
}
/* T1L-H */
if(offset == 0x05)
{
m_t1latch = (m_t1latch & 0xff) | ((data & 0xff) << 8);
//printf("BEEP T1CH %02x\n",data);
/* writing here actually enables the beeper, if above masking condition is satisfied */
if(m_beep_en)
{
m_beeper->set_state(1);
m_beeper->set_clock(894886.25 / (double)(m_t1latch) / 2.0);
}
}
m_via->write(space,offset,data);
}
void jr100_state::jr100_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x3fff).ram().share("ram");
map(0xc000, 0xc0ff).ram().share("pcg");
map(0xc100, 0xc3ff).ram().share("vram");
map(0xc800, 0xc80f).r(m_via, FUNC(via6522_device::read)).w(this, FUNC(jr100_state::jr100_via_w));
map(0xe000, 0xffff).rom();
}
/* Input ports */
INPUT_PORTS_START( jr100 )
PORT_START("LINE0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) // Z
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) // X
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) // C
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE1")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) // A
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) // S
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) // D
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) // F
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) // G
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE2")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) // Q
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) // W
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) // E
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) // R
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) // T
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE3")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) // 1
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) // 2
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) // 3
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) // 4
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) // 5
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE4")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) // 6
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) // 7
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) // 8
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) // 9
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) // 0
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE5")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) // Y
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) // U
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) // I
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) // O
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) // P
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE6")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) // H
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) // J
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) // K
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) // L
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) // ;
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE7")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) // V
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) // B
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) // N
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) // M
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) // ,
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("LINE8")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) // .
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) // space
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) // :
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) // enter
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) // -
PORT_BIT(0xE0, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
void jr100_state::machine_start()
{
}
void jr100_state::machine_reset()
{
}
void jr100_state::video_start()
{
}
uint32_t jr100_state::screen_update_jr100(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int x,y,xi,yi;
uint8_t *rom_pcg = m_region_maincpu->base() + 0xe000;
for (y = 0; y < 24; y++)
{
for (x = 0; x < 32; x++)
{
uint8_t tile = m_vram[x + y*32];
uint8_t attr = tile >> 7;
// ATTR is inverted for normal char or use PCG in case of CMODE1
uint8_t *gfx_data = rom_pcg;
if (m_use_pcg && attr) {
gfx_data = m_pcg;
attr = 0; // clear attr so bellow code stay same
}
tile &= 0x7f;
for(yi=0;yi<8;yi++)
{
for(xi=0;xi<8;xi++)
{
uint8_t pen = (gfx_data[(tile*8)+yi]>>(7-xi) & 1);
bitmap.pix16(y*8+yi, x*8+xi) = attr ^ pen;
}
}
}
}
return 0;
}
static const gfx_layout tiles8x8_layout =
{
8,8,
RGN_FRAC(1,1),
1,
{ 0 },
{ 0, 1, 2, 3, 4, 5, 6, 7, 8 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*8
};
static GFXDECODE_START( gfx_jr100 )
GFXDECODE_ENTRY( "maincpu", 0xe000, tiles8x8_layout, 0, 1 )
GFXDECODE_END
READ8_MEMBER(jr100_state::jr100_via_read_b)
{
uint8_t val = 0x1f;
switch ( m_keyboard_line )
{
case 0: val = m_line0->read(); break;
case 1: val = m_line1->read(); break;
case 2: val = m_line2->read(); break;
case 3: val = m_line3->read(); break;
case 4: val = m_line4->read(); break;
case 5: val = m_line5->read(); break;
case 6: val = m_line6->read(); break;
case 7: val = m_line7->read(); break;
case 8: val = m_line8->read(); break;
}
return val;
}
WRITE8_MEMBER(jr100_state::jr100_via_write_a)
{
m_keyboard_line = data & 0x0f;
}
WRITE8_MEMBER(jr100_state::jr100_via_write_b)
{
m_use_pcg = (data & 0x20) ? true : false;
m_speaker_data = data>>7;
}
WRITE_LINE_MEMBER(jr100_state::jr100_via_write_cb2)
{
m_cassette->output(state ? -1.0 : +1.0);
}
TIMER_DEVICE_CALLBACK_MEMBER(jr100_state::sound_tick)
{
m_speaker->level_w(m_speaker_data);
m_speaker_data = 0;
double level = (m_cassette->input());
if (level > 0.0) {
m_via->write_ca1(0);
m_via->write_cb1(0);
} else {
m_via->write_ca1(1);
m_via->write_cb1(1);
}
}
uint32_t jr100_state::readByLittleEndian(uint8_t *buf,int pos)
{
return buf[pos] + (buf[pos+1] << 8) + (buf[pos+2] << 16) + (buf[pos+3] << 24);
}
QUICKLOAD_LOAD_MEMBER( jr100_state,jr100)
{
int quick_length;
uint8_t buf[0x10000];
int read_;
quick_length = image.length();
if (quick_length >= 0xffff)
return image_init_result::FAIL;
read_ = image.fread(buf, quick_length);
if (read_ != quick_length)
return image_init_result::FAIL;
if (buf[0]!=0x50 || buf[1]!=0x52 || buf[2]!=0x4F || buf[3]!=0x47) {
// this is not PRG
return image_init_result::FAIL;
}
int pos = 4;
if (readByLittleEndian(buf,pos)!=1) {
// not version 1 of PRG file
return image_init_result::FAIL;
}
pos += 4;
uint32_t len =readByLittleEndian(buf,pos); pos+= 4;
pos += len; // skip name
uint32_t start_address = readByLittleEndian(buf,pos); pos+= 4;
uint32_t code_length = readByLittleEndian(buf,pos); pos+= 4;
uint32_t flag = readByLittleEndian(buf,pos); pos+= 4;
uint32_t end_address = start_address + code_length - 1;
// copy code
memcpy(m_ram + start_address,buf + pos,code_length);
if (flag == 0) {
m_ram[end_address + 1] = 0xdf;
m_ram[end_address + 2] = 0xdf;
m_ram[end_address + 3] = 0xdf;
m_ram[6 ] = (end_address >> 8 & 0xFF);
m_ram[7 ] = (end_address & 0xFF);
m_ram[8 ] = ((end_address + 1) >> 8 & 0xFF);
m_ram[9 ] = ((end_address + 1) & 0xFF);
m_ram[10] = ((end_address + 2) >> 8 & 0xFF);
m_ram[11] = ((end_address + 2) & 0xFF);
m_ram[12] = ((end_address + 3) >> 8 & 0xFF);
m_ram[13] = ((end_address + 3) & 0xFF);
}
return image_init_result::PASS;
}
MACHINE_CONFIG_START(jr100_state::jr100)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",M6802, XTAL(14'318'181) / 4) // clock devided internaly by 4
MCFG_DEVICE_PROGRAM_MAP(jr100_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(256, 192) /* border size not accurate */
MCFG_SCREEN_VISIBLE_AREA(0, 256 - 1, 0, 192 - 1)
MCFG_SCREEN_UPDATE_DRIVER(jr100_state, screen_update_jr100)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_jr100)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_DEVICE_ADD("via", VIA6522, XTAL(14'318'181) / 16)
MCFG_VIA6522_READPB_HANDLER(READ8(*this, jr100_state,jr100_via_read_b))
MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(*this, jr100_state,jr100_via_write_a))
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(*this, jr100_state,jr100_via_write_b))
MCFG_VIA6522_CB2_HANDLER(WRITELINE(*this, jr100_state, jr100_via_write_cb2))
SPEAKER(config, "mono").front_center();
WAVE(config, "wave", "cassette").add_route(ALL_OUTPUTS, "mono", 0.25);
SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 1.00);
MCFG_DEVICE_ADD("beeper", BEEP, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS,"mono",0.50)
MCFG_CASSETTE_ADD( "cassette" )
MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED)
MCFG_TIMER_DRIVER_ADD_PERIODIC("sound_tick", jr100_state, sound_tick, attotime::from_hz(XTAL(14'318'181) / 16))
/* quickload */
MCFG_QUICKLOAD_ADD("quickload", jr100_state, jr100, "prg", 2)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( jr100 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "jr100.rom", 0xe000, 0x2000, CRC(951d08a1) SHA1(edae3daaa94924e444bbe485ac2bcd5cb5b22ca2))
ROM_END
ROM_START( jr100u )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "jr100u.rom", 0xe000, 0x2000, CRC(f589dd8d) SHA1(78a51f2ae055bf4dc1b0887a6277f5dbbd8ba512))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1981, jr100, 0, 0, jr100, jr100, jr100_state, empty_init, "National", "JR-100", 0 )
COMP( 1981, jr100u, jr100, 0, jr100, jr100, jr100_state, empty_init, "Panasonic", "JR-100U", 0 )