diff options
Diffstat (limited to 'src/mess/drivers/jr100.c')
-rw-r--r-- | src/mess/drivers/jr100.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/src/mess/drivers/jr100.c b/src/mess/drivers/jr100.c new file mode 100644 index 00000000000..87f7caf9fe1 --- /dev/null +++ b/src/mess/drivers/jr100.c @@ -0,0 +1,410 @@ +/*************************************************************************** + + 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 "machine/6522via.h" +#include "imagedev/cassette.h" +#include "sound/wave.h" +#include "sound/speaker.h" +#include "sound/beep.h" +#include "imagedev/snapquik.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"){ } + + required_shared_ptr<UINT8> m_ram; + required_shared_ptr<UINT8> m_pcg; + required_shared_ptr<UINT8> m_vram; + UINT8 m_keyboard_line; + bool m_use_pcg; + UINT8 m_speaker; + UINT16 m_t1latch; + UINT8 m_beep_en; + DECLARE_WRITE8_MEMBER(jr100_via_w); +}; + + + + +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) + beep_set_state(machine().device(BEEPER_TAG),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) + { + beep_set_state(machine().device(BEEPER_TAG),1); + beep_set_frequency(machine().device(BEEPER_TAG),894886.25 / (double)(m_t1latch) / 2.0); + } + } + via6522_device *via = machine().device<via6522_device>("via"); + via->write(space,offset,data); +} + +static ADDRESS_MAP_START(jr100_mem, AS_PROGRAM, 8, jr100_state ) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x3fff) AM_RAM AM_SHARE("ram") + AM_RANGE(0xc000, 0xc0ff) AM_RAM AM_SHARE("pcg") + AM_RANGE(0xc100, 0xc3ff) AM_RAM AM_SHARE("vram") + AM_RANGE(0xc800, 0xc80f) AM_DEVREAD("via", via6522_device, read) AM_WRITE(jr100_via_w) + AM_RANGE(0xe000, 0xffff) AM_ROM +ADDRESS_MAP_END + +/* 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 + +static MACHINE_START(jr100) +{ + beep_set_frequency(machine.device(BEEPER_TAG),0); + beep_set_state(machine.device(BEEPER_TAG),0); +} + +static MACHINE_RESET(jr100) +{ +} + +static VIDEO_START( jr100 ) +{ +} + +static SCREEN_UPDATE_IND16( jr100 ) +{ + jr100_state *state = screen.machine().driver_data<jr100_state>(); + int x,y,xi,yi; + + UINT8 *rom_pcg = state->memregion("maincpu")->base() + 0xe000; + for (y = 0; y < 24; y++) + { + for (x = 0; x < 32; x++) + { + UINT8 tile = state->m_vram[x + y*32]; + UINT8 attr = tile >> 7; + // ATTR is inverted for normal char or use PCG in case of CMODE1 + UINT8 *gfx_data = rom_pcg; + if (state->m_use_pcg && attr) { + gfx_data = state->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 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( jr100 ) + GFXDECODE_ENTRY( "maincpu", 0xe000, tiles8x8_layout, 0, 1 ) +GFXDECODE_END + +static const char *const keynames[] = { + "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7", + "LINE8", NULL, NULL, NULL, NULL, NULL, NULL, NULL +}; + + +static READ8_DEVICE_HANDLER(jr100_via_read_b) +{ + jr100_state *state = device->machine().driver_data<jr100_state>(); + UINT8 val = 0x1f; + if (keynames[state->m_keyboard_line]) { + val = state->ioport(keynames[state->m_keyboard_line])->read(); + } + return val; +} + +static WRITE8_DEVICE_HANDLER(jr100_via_write_a ) +{ + jr100_state *state = device->machine().driver_data<jr100_state>(); + state->m_keyboard_line = data & 0x0f; +} + +static WRITE8_DEVICE_HANDLER(jr100_via_write_b ) +{ + jr100_state *state = device->machine().driver_data<jr100_state>(); + state->m_use_pcg = (data & 0x20) ? TRUE : FALSE; + state->m_speaker = data>>7; +} + +static WRITE_LINE_DEVICE_HANDLER(jr100_via_write_cb2) +{ + device->machine().device<cassette_image_device>(CASSETTE_TAG)->output(state ? -1.0 : +1.0); +} +static const via6522_interface jr100_via_intf = +{ + DEVCB_NULL, /* in_a_func */ + DEVCB_HANDLER(jr100_via_read_b), /* in_b_func */ + DEVCB_NULL, /* in_ca1_func */ + DEVCB_NULL, /* in_cb1_func */ + DEVCB_NULL, /* in_ca2_func */ + DEVCB_NULL, /* in_cb2_func */ + DEVCB_HANDLER(jr100_via_write_a), /* out_a_func */ + DEVCB_HANDLER(jr100_via_write_b), /* out_b_func */ + DEVCB_NULL, /* out_ca1_func */ + DEVCB_NULL, /* out_cb1_func */ + DEVCB_NULL, /* out_ca2_func */ + DEVCB_LINE(jr100_via_write_cb2), /* out_cb2_func */ + DEVCB_NULL /* irq_func */ +}; +static const cassette_interface jr100_cassette_interface = +{ + cassette_default_formats, + NULL, + (cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED), + NULL, + NULL +}; + +static TIMER_DEVICE_CALLBACK( sound_tick ) +{ + jr100_state *state = timer.machine().driver_data<jr100_state>(); + device_t *speaker = timer.machine().device(SPEAKER_TAG); + speaker_level_w(speaker,state->m_speaker); + state->m_speaker = 0; + + via6522_device *via = timer.machine().device<via6522_device>("via"); + double level = (timer.machine().device<cassette_image_device>(CASSETTE_TAG)->input()); + if (level > 0.0) { + via->write_ca1(0); + via->write_cb1(0); + } else { + via->write_ca1(1); + via->write_cb1(1); + } + + +} + +static UINT32 readByLittleEndian(UINT8 *buf,int pos) +{ + return buf[pos] + (buf[pos+1] << 8) + (buf[pos+2] << 16) + (buf[pos+3] << 24); +} + +static QUICKLOAD_LOAD(jr100) +{ + jr100_state *state = image.device().machine().driver_data<jr100_state>(); + int quick_length; + UINT8 buf[0x10000]; + int read_; + quick_length = image.length(); + if (quick_length >= 0xffff) + return IMAGE_INIT_FAIL; + read_ = image.fread(buf, quick_length); + if (read_ != quick_length) + return IMAGE_INIT_FAIL; + + if (buf[0]!=0x50 || buf[1]!=0x52 || buf[2]!=0x4F || buf[3]!=0x47) { + // this is not PRG + return IMAGE_INIT_FAIL; + } + int pos = 4; + if (readByLittleEndian(buf,pos)!=1) { + // not version 1 of PRG file + return IMAGE_INIT_FAIL; + } + pos += 4; + UINT32 len =readByLittleEndian(buf,pos); pos+= 4; + pos += len; // skip name + UINT32 start_address = readByLittleEndian(buf,pos); pos+= 4; + UINT32 code_length = readByLittleEndian(buf,pos); pos+= 4; + UINT32 flag = readByLittleEndian(buf,pos); pos+= 4; + + UINT32 end_address = start_address + code_length - 1; + // copy code + memcpy(state->m_ram + start_address,buf + pos,code_length); + if (flag == 0) { + state->m_ram[end_address + 1] = 0xdf; + state->m_ram[end_address + 2] = 0xdf; + state->m_ram[end_address + 3] = 0xdf; + state->m_ram[6 ] = (end_address >> 8 & 0xFF); + state->m_ram[7 ] = (end_address & 0xFF); + state->m_ram[8 ] = ((end_address + 1) >> 8 & 0xFF); + state->m_ram[9 ] = ((end_address + 1) & 0xFF); + state->m_ram[10] = ((end_address + 2) >> 8 & 0xFF); + state->m_ram[11] = ((end_address + 2) & 0xFF); + state->m_ram[12] = ((end_address + 3) >> 8 & 0xFF); + state->m_ram[13] = ((end_address + 3) & 0xFF); + } + + return IMAGE_INIT_PASS; +} + +static MACHINE_CONFIG_START( jr100, jr100_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",M6802, XTAL_14_31818MHz / 4) // clock devided internaly by 4 + MCFG_CPU_PROGRAM_MAP(jr100_mem) + + MCFG_MACHINE_START(jr100) + MCFG_MACHINE_RESET(jr100) + + /* 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_STATIC(jr100) + + MCFG_GFXDECODE(jr100) + MCFG_PALETTE_LENGTH(2) + MCFG_PALETTE_INIT(black_and_white) + + MCFG_VIDEO_START(jr100) + + MCFG_VIA6522_ADD("via", XTAL_14_31818MHz / 16, jr100_via_intf) + + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) + MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + + MCFG_SOUND_ADD(BEEPER_TAG, BEEP, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS,"mono",0.50) + + MCFG_CASSETTE_ADD( CASSETTE_TAG, jr100_cassette_interface ) + + MCFG_TIMER_ADD_PERIODIC("sound_tick", sound_tick, attotime::from_hz(XTAL_14_31818MHz / 16)) + + /* quickload */ + MCFG_QUICKLOAD_ADD("quickload", 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 INIT COMPANY FULLNAME FLAGS */ +COMP( 1981, jr100, 0, 0, jr100, jr100, driver_device, 0, "National", "JR-100", 0) +COMP( 1981, jr100u, jr100, 0, jr100, jr100, driver_device, 0, "Panasonic", "JR-100U", 0) |