// license:BSD-3-Clause // copyright-holders:Angelo Salese /*************************************************************************** Toshiba Pasopia Machine unusable due to keyboard issues. Cassette works. Sound uses the beeper, and works. Try SOUND a,b where a=1-82, b=1-255. TODO: - machine emulation needs merging with Pasopia 7 (video emulation is completely different tho) - screen resolution switching - Centronics printer interface - RS-232C serial interface - FDC and other I/O expansions - fix keyboard - colours - graphics ****************************************************************************/ #include "emu.h" #include "includes/pasopia.h" #include "cpu/z80/z80.h" #include "machine/i8255.h" #include "machine/z80ctc.h" #include "machine/z80pio.h" #include "video/mc6845.h" #include "imagedev/cassette.h" #include "sound/spkrdev.h" #include "speaker.h" #include "emupal.h" #include "screen.h" class pasopia_state : public driver_device { public: pasopia_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_p_chargen(*this, "chargen") , m_p_vram(*this, "vram") , m_ppi0(*this, "ppi0") , m_ppi1(*this, "ppi1") , m_ppi2(*this, "ppi2") , m_ctc(*this, "ctc") , m_pio(*this, "pio") , m_crtc(*this, "crtc") , m_palette(*this, "palette") , m_io_keyboard(*this, "KEY.%d", 0) , m_cass(*this, "cassette") , m_speaker(*this, "speaker") { } void pasopia(machine_config &config); void init_pasopia(); private: DECLARE_WRITE8_MEMBER(pasopia_ctrl_w); DECLARE_WRITE8_MEMBER(vram_addr_lo_w); DECLARE_WRITE8_MEMBER(vram_latch_w); DECLARE_READ8_MEMBER(vram_latch_r); DECLARE_READ8_MEMBER(portb_1_r); DECLARE_READ8_MEMBER(portb_2_r); DECLARE_WRITE8_MEMBER(porta_2_w); DECLARE_WRITE8_MEMBER(vram_addr_hi_w); DECLARE_WRITE8_MEMBER(screen_mode_w); DECLARE_READ8_MEMBER(rombank_r); DECLARE_READ8_MEMBER(keyb_r); DECLARE_WRITE8_MEMBER(mux_w); DECLARE_WRITE_LINE_MEMBER(speaker_w); MC6845_UPDATE_ROW(crtc_update_row); TIMER_CALLBACK_MEMBER(pio_timer); void pasopia_io(address_map &map); void pasopia_map(address_map &map); uint8_t m_hblank; uint16_t m_vram_addr; uint8_t m_vram_latch; uint8_t m_attr_latch; uint8_t m_gfx_mode; uint8_t m_mux_data; u8 m_porta_2; bool m_video_wl; bool m_ram_bank; bool m_spr_sw; emu_timer *m_pio_timer; virtual void machine_start() override; virtual void machine_reset() override; required_device m_maincpu; required_region_ptr m_p_chargen; required_region_ptr m_p_vram; required_device m_ppi0; required_device m_ppi1; required_device m_ppi2; required_device m_ctc; required_device m_pio; required_device m_crtc; required_device m_palette; required_ioport_array<12> m_io_keyboard; required_device m_cass; required_device m_speaker; }; // needed to scan the keyboard, as the pio emulation doesn't do it. TIMER_CALLBACK_MEMBER( pasopia_state::pio_timer ) { m_pio->port_b_write(keyb_r(generic_space(),0,0xff)); } MC6845_UPDATE_ROW( pasopia_state::crtc_update_row ) { const rgb_t *palette = m_palette->palette()->entry_list_raw(); uint8_t chr,gfx,xi,fg=7,bg=0; // colours need to be determined uint16_t mem=ma,x; uint32_t *p = &bitmap.pix32(y); for (x = 0; x < x_count; x++) { uint8_t inv = (x == cursor_x) ? 0xff : 0; mem = ma + x; chr = m_p_vram[mem & 0x7ff]; /* get pattern of pixels for that character scanline */ gfx = m_p_chargen[(chr<<3) | ra] ^ inv; /* Display a scanline of a character */ for (xi = 0; xi < 8; xi++) *p++ = palette[BIT(gfx, 7-xi) ? fg : bg]; } } WRITE8_MEMBER( pasopia_state::pasopia_ctrl_w ) { m_ram_bank = BIT(data, 1); membank("bank1")->set_entry(m_ram_bank); } void pasopia_state::pasopia_map(address_map &map) { map(0x0000, 0x7fff).bankr("bank1").bankw("bank2"); map(0x8000, 0xffff).ram(); } void pasopia_state::pasopia_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x00, 0x03).rw(m_ppi0, FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x08, 0x0b).rw(m_ppi1, FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x10, 0x10).rw(m_crtc, FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w)); map(0x11, 0x11).rw(m_crtc, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); // 0x18 - 0x1b pac2 // 0x1c - 0x1f something map(0x20, 0x23).rw(m_ppi2, FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x28, 0x2b).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0x30, 0x33).rw(m_pio, FUNC(z80pio_device::read), FUNC(z80pio_device::write)); // 0x38 printer map(0x3c, 0x3c).w(FUNC(pasopia_state::pasopia_ctrl_w)); } /* Input ports */ static INPUT_PORTS_START( pasopia ) PASOPIA_KEYBOARD INPUT_PORTS_END void pasopia_state::machine_start() { m_hblank = 0; membank("bank1")->set_entry(0); membank("bank2")->set_entry(0); } void pasopia_state::machine_reset() { m_porta_2 = 0xFF; m_cass->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); } WRITE8_MEMBER( pasopia_state::vram_addr_lo_w ) { m_vram_addr = (m_vram_addr & 0x3f00) | data; } WRITE8_MEMBER( pasopia_state::vram_latch_w ) { m_vram_latch = data; } READ8_MEMBER( pasopia_state::vram_latch_r ) { return m_p_vram[m_vram_addr]; } READ8_MEMBER( pasopia_state::portb_1_r ) { /* x--- ---- attribute latch -x-- ---- hblank --x- ---- vblank ---x ---- LCD system mode, active low */ uint8_t grph_latch,lcd_mode; m_hblank ^= 0x40; //TODO grph_latch = (m_p_vram[m_vram_addr | 0x4000] & 0x80); lcd_mode = 0x10; return m_hblank | lcd_mode | grph_latch; //bit 4: LCD mode } READ8_MEMBER( pasopia_state::portb_2_r ) { return (m_cass->input() > +0.04) ? 0x20 : 0; } WRITE8_MEMBER( pasopia_state::porta_2_w ) { m_cass->output(BIT(data, 4) ? -1.0 : +1.0); u8 changed = data ^ m_porta_2; m_porta_2 = data; if (BIT(changed, 5)) { m_cass->change_state(BIT(data, 5) ? CASSETTE_MOTOR_DISABLED : CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR); } } WRITE_LINE_MEMBER( pasopia_state::speaker_w ) { if (state) { m_spr_sw ^= 1; if (BIT(m_mux_data, 7)) m_speaker->level_w(m_spr_sw); } } WRITE8_MEMBER( pasopia_state::vram_addr_hi_w ) { m_attr_latch = (data & 0x80) | (m_attr_latch & 0x7f); if ( BIT(data, 6) && !m_video_wl ) { m_p_vram[m_vram_addr] = m_vram_latch; m_p_vram[m_vram_addr | 0x4000] = m_attr_latch; } m_video_wl = BIT(data, 6); m_vram_addr = (m_vram_addr & 0xff) | ((data & 0x3f) << 8); } WRITE8_MEMBER( pasopia_state::screen_mode_w ) { m_gfx_mode = (data & 0xe0) >> 5; m_attr_latch = (m_attr_latch & 0x80) | (data & 7); printf("Screen Mode=%02x\n",data); } READ8_MEMBER( pasopia_state::rombank_r ) { return (m_ram_bank) ? 4 : 0; } READ8_MEMBER( pasopia_state::keyb_r ) { u8 data = 0xff; for (u8 i = 0; i < 3; i++) if (BIT(m_mux_data, i+4)) for (u8 j = 0; j < 4; j++) if (BIT(m_mux_data, j)) data &= m_io_keyboard[i*4+j]->read(); return data; } WRITE8_MEMBER( pasopia_state::mux_w ) { m_mux_data = data; } static const gfx_layout p7_chars_8x8 = { 8,8, RGN_FRAC(1,1), 1, { 0 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8 }; static GFXDECODE_START( gfx_pasopia ) GFXDECODE_ENTRY( "chargen", 0x0000, p7_chars_8x8, 0, 4 ) GFXDECODE_END static const z80_daisy_config pasopia_daisy[] = { { "ctc" }, { "pio" }, // { "fdc" }, /* TODO */ { nullptr } }; void pasopia_state::init_pasopia() { /* We preset all banks here, so that bankswitching will incur no speed penalty. 0000 indicates ROMs, 8000 indicates RAM. */ uint8_t *ram = memregion("maincpu")->base(); membank("bank1")->configure_entries(0, 2, &ram[0x0000], 0x8000); membank("bank2")->configure_entry(0, &ram[0x8000]); m_pio_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pasopia_state::pio_timer), this)); m_pio_timer->adjust(attotime::from_hz(50), 0, attotime::from_hz(50)); } void pasopia_state::pasopia(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 15.9744_MHz_XTAL / 4); m_maincpu->set_addrmap(AS_PROGRAM, &pasopia_state::pasopia_map); m_maincpu->set_addrmap(AS_IO, &pasopia_state::pasopia_io); m_maincpu->set_daisy_config(pasopia_daisy); /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(14.318181_MHz_XTAL / 2, 456, 0, 296, 262, 0, 192); screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update)); GFXDECODE(config, "gfxdecode", m_palette, gfx_pasopia); PALETTE(config, m_palette).set_entries(8); /* Devices */ HD6845S(config, m_crtc, 14.318181_MHz_XTAL / 16); m_crtc->set_screen("screen"); m_crtc->set_show_border_area(false); m_crtc->set_char_width(8); m_crtc->set_update_row_callback(FUNC(pasopia_state::crtc_update_row)); I8255A(config, m_ppi0); m_ppi0->out_pa_callback().set(FUNC(pasopia_state::vram_addr_lo_w)); m_ppi0->out_pb_callback().set(FUNC(pasopia_state::vram_latch_w)); m_ppi0->in_pc_callback().set(FUNC(pasopia_state::vram_latch_r)); I8255A(config, m_ppi1); m_ppi1->out_pa_callback().set(FUNC(pasopia_state::screen_mode_w)); m_ppi1->in_pb_callback().set(FUNC(pasopia_state::portb_1_r)); m_ppi1->out_pc_callback().set(FUNC(pasopia_state::vram_addr_hi_w)); I8255A(config, m_ppi2); m_ppi2->in_pc_callback().set(FUNC(pasopia_state::rombank_r)); m_ppi2->out_pa_callback().set(FUNC(pasopia_state::porta_2_w)); m_ppi2->in_pb_callback().set(FUNC(pasopia_state::portb_2_r)); Z80CTC(config, m_ctc, 15.9744_MHz_XTAL / 4); m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_ctc->zc_callback<1>().set(FUNC(pasopia_state::speaker_w)); m_ctc->zc_callback<2>().set(m_ctc, FUNC(z80ctc_device::trg3)); Z80PIO(config, m_pio, 15.9744_MHz_XTAL / 4); m_pio->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_pio->out_pa_callback().set(FUNC(pasopia_state::mux_w)); m_pio->in_pb_callback().set(FUNC(pasopia_state::keyb_r)); /* sound hardware */ SPEAKER(config, "mono").front_center(); SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50); CASSETTE(config, m_cass); m_cass->set_default_state(CASSETTE_PLAY | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_ENABLED); m_cass->add_route(ALL_OUTPUTS, "mono", 0.05); } /* ROM definition */ ROM_START( pasopia ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "tbasic.rom", 0x0000, 0x8000, CRC(f53774ff) SHA1(bbec45a3bad8d184505cc6fe1f6e2e60a7fb53f2)) ROM_REGION( 0x0800, "chargen", 0 ) ROM_LOAD( "font.rom", 0x0000, 0x0800, BAD_DUMP CRC(a91c45a9) SHA1(a472adf791b9bac3dfa6437662e1a9e94a88b412)) //stolen from pasopia7 ROM_REGION( 0x8000, "vram", ROMREGION_ERASE00 ) ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1982, pasopia, 0, 0, pasopia, pasopia, pasopia_state, init_pasopia, "Toshiba", "Personal Computer Pasopia PA7010", MACHINE_NOT_WORKING )