/*************************************************************************** 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"), 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 m_ram; required_shared_ptr m_pcg; required_shared_ptr m_vram; UINT8 m_keyboard_line; bool m_use_pcg; UINT8 m_speaker_data; UINT16 m_t1latch; UINT8 m_beep_en; DECLARE_WRITE8_MEMBER(jr100_via_w); virtual void machine_start(); virtual void machine_reset(); virtual void video_start(); UINT32 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 readByLittleEndian(UINT8 *buf,int pos); DECLARE_QUICKLOAD_LOAD_MEMBER(jr100); protected: required_device m_via; required_device m_cassette; required_device m_beeper; required_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 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_frequency(894886.25 / (double)(m_t1latch) / 2.0); } } m_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 void jr100_state::machine_start() { m_beeper->set_frequency(0); m_beeper->set_state(0); } void jr100_state::machine_reset() { } void jr100_state::video_start() { } UINT32 jr100_state::screen_update_jr100(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int x,y,xi,yi; UINT8 *rom_pcg = m_region_maincpu->base() + 0xe000; for (y = 0; y < 24; y++) { for (x = 0; x < 32; x++) { UINT8 tile = 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 (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 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 READ8_MEMBER(jr100_state::jr100_via_read_b) { UINT8 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 jr100_state::readByLittleEndian(UINT8 *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 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(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_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) /* 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_GFXDECODE_ADD("gfxdecode", "palette", jr100) MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") MCFG_DEVICE_ADD("via", VIA6522, XTAL_14_31818MHz / 16) MCFG_VIA6522_READPB_HANDLER(READ8(jr100_state,jr100_via_read_b)) MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(jr100_state,jr100_via_write_a)) MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(jr100_state,jr100_via_write_b)) MCFG_VIA6522_CB2_HANDLER(WRITELINE(jr100_state, jr100_via_write_cb2)) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) MCFG_SOUND_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_31818MHz / 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 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)