diff options
Diffstat (limited to 'src/mame/machine/intv.cpp')
-rw-r--r-- | src/mame/machine/intv.cpp | 532 |
1 files changed, 532 insertions, 0 deletions
diff --git a/src/mame/machine/intv.cpp b/src/mame/machine/intv.cpp new file mode 100644 index 00000000000..391abbd4150 --- /dev/null +++ b/src/mame/machine/intv.cpp @@ -0,0 +1,532 @@ +// license:BSD-3-Clause +// copyright-holders:Nathan Woods,Frank Palazzolo +#include "emu.h" +#include "video/stic.h" +#include "includes/intv.h" +#include "cpu/cp1610/cp1610.h" + + + +WRITE16_MEMBER( intv_state::intvkbd_dualport16_w ) +{ + unsigned char *RAM; + + COMBINE_DATA(&m_intvkbd_dualport_ram[offset]); + + /* copy the LSB over to the 6502 OP RAM, in case they are opcodes */ + RAM = m_region_keyboard->base(); + RAM[offset] = (UINT8) (data >> 0); +} + +READ8_MEMBER( intv_state::intvkbd_dualport8_lsb_r ) +{ + return (UINT8) (m_intvkbd_dualport_ram[offset] >> 0); +} + +WRITE8_MEMBER( intv_state::intvkbd_dualport8_lsb_w ) +{ + unsigned char *RAM; + + m_intvkbd_dualport_ram[offset] &= ~0x00FF; + m_intvkbd_dualport_ram[offset] |= ((UINT16) data) << 0; + + /* copy over to the 6502 OP RAM, in case they are opcodes */ + RAM = m_region_keyboard->base(); + RAM[offset] = data; +} + + + +READ8_MEMBER( intv_state::intvkbd_dualport8_msb_r ) +{ + unsigned char rv; + + if (offset < 0x100) + { + switch (offset) + { + case 0x000: + rv = m_io_test->read() & 0x80; + logerror("TAPE: Read %02x from 0x40%02x - XOR Data?\n",rv,offset); + break; + case 0x001: + rv = (m_io_test->read() & 0x40) << 1; + logerror("TAPE: Read %02x from 0x40%02x - Sense 1?\n",rv,offset); + break; + case 0x002: + rv = (m_io_test->read() & 0x20) << 2; + logerror("TAPE: Read %02x from 0x40%02x - Sense 2?\n",rv,offset); + break; + case 0x003: + rv = (m_io_test->read() & 0x10) << 3; + logerror("TAPE: Read %02x from 0x40%02x - Tape Present\n",rv,offset); + break; + case 0x004: + rv = (m_io_test->read() & 0x08) << 4; + logerror("TAPE: Read %02x from 0x40%02x - Comp (339/1)\n",rv,offset); + break; + case 0x005: + rv = (m_io_test->read() & 0x04) << 5; + logerror("TAPE: Read %02x from 0x40%02x - Clocked Comp (339/13)\n",rv,offset); + break; + case 0x006: + if (m_sr1_int_pending) + rv = 0x00; + else + rv = 0x80; + logerror("TAPE: Read %02x from 0x40%02x - SR1 Int Pending\n",rv,offset); + break; + case 0x007: + if (m_tape_int_pending) + rv = 0x00; + else + rv = 0x80; + logerror("TAPE: Read %02x from 0x40%02x - Tape? Int Pending\n",rv,offset); + break; + case 0x060: /* Keyboard Read */ + rv = 0xff; + if (m_intvkbd_keyboard_col < 10) + rv = m_intv_keyboard[m_intvkbd_keyboard_col]->read(); + break; + case 0x80: + rv = 0x00; + logerror("TAPE: Read %02x from 0x40%02x, clear tape int pending\n",rv,offset); + m_tape_int_pending = 0; + break; + case 0xa0: + rv = 0x00; + logerror("TAPE: Read %02x from 0x40%02x, clear SR1 int pending\n",rv,offset); + m_sr1_int_pending = 0; + break; + case 0xc0: + case 0xc1: + case 0xc2: + case 0xc3: + case 0xc4: + case 0xc5: + case 0xc6: + case 0xc7: + case 0xc8: + case 0xc9: + case 0xca: + case 0xcb: + case 0xcc: + case 0xcd: + case 0xce: + case 0xcf: + /* TMS9927 regs */ + rv = intvkbd_tms9927_r(space, offset-0xc0); + break; + default: + rv = (m_intvkbd_dualport_ram[offset]&0x0300)>>8; + logerror("Unknown read %02x from 0x40%02x\n",rv,offset); + break; + } + return rv; + } + else + return (m_intvkbd_dualport_ram[offset]&0x0300)>>8; +} + +static const char *const tape_motor_mode_desc[8] = +{ + "IDLE", "IDLE", "IDLE", "IDLE", + "EJECT", "PLAY/RECORD", "REWIND", "FF" +}; + +WRITE8_MEMBER( intv_state::intvkbd_dualport8_msb_w ) +{ + unsigned int mask; + + if (offset < 0x100) + { + switch (offset) + { + case 0x020: + m_tape_motor_mode &= 3; + if (data & 1) + m_tape_motor_mode |= 4; + logerror("TAPE: Motor Mode: %s\n",tape_motor_mode_desc[m_tape_motor_mode]); + break; + case 0x021: + m_tape_motor_mode &= 5; + if (data & 1) + m_tape_motor_mode |= 2; + logerror("TAPE: Motor Mode: %s\n",tape_motor_mode_desc[m_tape_motor_mode]); + break; + case 0x022: + m_tape_motor_mode &= 6; + if (data & 1) + m_tape_motor_mode |= 1; + logerror("TAPE: Motor Mode: %s\n",tape_motor_mode_desc[m_tape_motor_mode]); + break; + case 0x023: + case 0x024: + case 0x025: + case 0x026: + case 0x027: + m_tape_unknown_write[offset - 0x23] = (data & 1); + break; + case 0x040: + m_tape_unknown_write[5] = (data & 1); + break; + case 0x041: + if (data & 1) + logerror("TAPE: Tape Interrupts Enabled\n"); + else + logerror("TAPE: Tape Interrupts Disabled\n"); + m_tape_interrupts_enabled = (data & 1); + break; + case 0x042: + if (data & 1) + logerror("TAPE: Cart Bus Interrupts Disabled\n"); + else + logerror("TAPE: Cart Bus Interrupts Enabled\n"); + break; + case 0x043: + if (data & 0x01) + m_intvkbd_text_blanked = 0; + else + m_intvkbd_text_blanked = 1; + break; + case 0x044: + m_intvkbd_keyboard_col &= 0x0e; + m_intvkbd_keyboard_col |= (data&0x01); + break; + case 0x045: + m_intvkbd_keyboard_col &= 0x0d; + m_intvkbd_keyboard_col |= ((data&0x01)<<1); + break; + case 0x046: + m_intvkbd_keyboard_col &= 0x0b; + m_intvkbd_keyboard_col |= ((data&0x01)<<2); + break; + case 0x047: + m_intvkbd_keyboard_col &= 0x07; + m_intvkbd_keyboard_col |= ((data&0x01)<<3); + break; + case 0x80: + logerror("TAPE: Write to 0x40%02x, clear tape int pending\n",offset); + m_tape_int_pending = 0; + break; + case 0xa0: + logerror("TAPE: Write to 0x40%02x, clear SR1 int pending\n",offset); + m_sr1_int_pending = 0; + break; + case 0xc0: + case 0xc1: + case 0xc2: + case 0xc3: + case 0xc4: + case 0xc5: + case 0xc6: + case 0xc7: + case 0xc8: + case 0xc9: + case 0xca: + case 0xcb: + case 0xcc: + case 0xcd: + case 0xce: + case 0xcf: + /* TMS9927 regs */ + intvkbd_tms9927_w(space, offset-0xc0, data); + break; + default: + logerror("%04X: Unknown write %02x to 0x40%02x\n",space.device().safe_pc(),data,offset); + break; + } + } + else + { + mask = m_intvkbd_dualport_ram[offset] & 0x00ff; + m_intvkbd_dualport_ram[offset] = mask | ((data<<8)&0x0300); + } +} + + +READ16_MEMBER( intv_state::intv_stic_r ) +{ + if (m_bus_copy_mode || !m_stic->read_stic_handshake()) + return m_stic->read(space, offset, mem_mask); + else + return offset; +} + +WRITE16_MEMBER( intv_state::intv_stic_w ) +{ + if (m_bus_copy_mode || !m_stic->read_stic_handshake()) + m_stic->write(space, offset, data, mem_mask); +} + + +READ16_MEMBER( intv_state::intv_gram_r ) +{ + //logerror("read: %d = GRAM(%d)\n",state->m_gram[offset],offset); + if (m_bus_copy_mode || !m_stic->read_stic_handshake()) + return m_stic->gram_read(space, offset, mem_mask); + else + return offset; +} + +WRITE16_MEMBER( intv_state::intv_gram_w ) +{ + if (m_bus_copy_mode || !m_stic->read_stic_handshake()) + m_stic->gram_write(space, offset, data, mem_mask); +} + +READ16_MEMBER( intv_state::intv_ram8_r ) +{ + //logerror("%x = ram8_r(%x)\n",state->m_ram8[offset],offset); + return (int)m_ram8[offset]; +} + +WRITE16_MEMBER( intv_state::intv_ram8_w ) +{ + //logerror("ram8_w(%x) = %x\n",offset,data); + m_ram8[offset] = data&0xff; +} + +READ16_MEMBER( intv_state::intv_ram16_r ) +{ + //logerror("%x = ram16_r(%x)\n",state->m_ram16[offset],offset); + return (int)m_ram16[offset]; +} + +WRITE16_MEMBER( intv_state::intv_ram16_w ) +{ + //logerror("%g: WRITING TO GRAM offset = %d\n",machine.time(),offset); + //logerror("ram16_w(%x) = %x\n",offset,data); + m_ram16[offset] = data & 0xffff; +} + +READ8_MEMBER( intv_state::intvkb_iocart_r ) +{ + if (m_iocart1->exists()) + return m_iocart1->read_rom(space, offset, mem_mask); + else if (m_iocart2->exists()) + return m_iocart2->read_rom(space, offset, mem_mask); + else + return m_region_keyboard->u8(offset + 0xe000); +} + + +/* Set Reset and INTR/INTRM Vector */ +void intv_state::machine_reset() +{ + m_maincpu->set_input_line_vector(CP1610_RESET, 0x1000); + + /* These are actually the same vector, and INTR is unused */ + m_maincpu->set_input_line_vector(CP1610_INT_INTRM, 0x1004); + m_maincpu->set_input_line_vector(CP1610_INT_INTR, 0x1004); + + /* Set initial PC */ + m_maincpu->set_state_int(CP1610_R7, 0x1000); +} + +void intv_state::machine_start() +{ + // TODO: split these for intvkbd & intvecs?? + for (int i = 0; i < 4; i++) + { + char str[8]; + sprintf(str, "KEYPAD%i", i + 1); + m_keypad[i] = ioport(str); + } + for (int i = 0; i < 4; i++) + { + char str[6]; + sprintf(str, "DISC%i", i + 1); + m_disc[i] = ioport(str); + } + for (int i = 0; i < 4; i++) + { + char str[7]; + sprintf(str, "DISCX%i", i + 1); + m_discx[i] = ioport(str); + sprintf(str, "DISCY%i", i + 1); + m_discy[i] = ioport(str); + } + + save_item(NAME(m_bus_copy_mode)); + save_item(NAME(m_backtab_row)); + save_item(NAME(m_ram16)); + save_item(NAME(m_sr1_int_pending)); + save_item(NAME(m_ram8)); + + // intvkbd + if (m_is_keybd) + { + for (int i = 0; i < 10; i++) + { + char str[5]; + sprintf(str, "ROW%i", i); + m_intv_keyboard[i] = ioport(str); + } + + save_item(NAME(m_intvkbd_text_blanked)); + save_item(NAME(m_intvkbd_keyboard_col)); + save_item(NAME(m_tape_int_pending)); + save_item(NAME(m_tape_interrupts_enabled)); + save_item(NAME(m_tape_unknown_write)); + save_item(NAME(m_tape_motor_mode)); + save_item(NAME(m_tms9927_num_rows)); + save_item(NAME(m_tms9927_cursor_col)); + save_item(NAME(m_tms9927_cursor_row)); + save_item(NAME(m_tms9927_last_row)); + } + + if (m_cart && m_cart->exists()) + { + // RAM + switch (m_cart->get_type()) + { + case INTV_RAM: + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xd000, 0xd7ff, read16_delegate(FUNC(intv_cart_slot_device::read_ram),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_ram),(intv_cart_slot_device*)m_cart)); + break; + case INTV_GFACT: + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x8800, 0x8fff, read16_delegate(FUNC(intv_cart_slot_device::read_ram),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_ram),(intv_cart_slot_device*)m_cart)); + break; + case INTV_VOICE: + m_cart->late_subslot_setup(); + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x0080, 0x0081, read16_delegate(FUNC(intv_cart_slot_device::read_speech),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_speech),(intv_cart_slot_device*)m_cart)); + + // passthru for RAM-equipped carts + m_maincpu->space(AS_PROGRAM).install_write_handler(0x8800, 0x8fff, write16_delegate(FUNC(intv_cart_slot_device::write_88),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xd000, 0xd7ff, write16_delegate(FUNC(intv_cart_slot_device::write_d0),(intv_cart_slot_device*)m_cart)); + break; + case INTV_ECS: + m_cart->late_subslot_setup(); + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x00f0, 0x00ff, read16_delegate(FUNC(intv_cart_slot_device::read_ay),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_ay),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x4000, 0x47ff, read16_delegate(FUNC(intv_cart_slot_device::read_ram),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_ram),(intv_cart_slot_device*)m_cart)); + + m_maincpu->space(AS_PROGRAM).install_write_handler(0x2000, 0x2fff, write16_delegate(FUNC(intv_cart_slot_device::write_rom20),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0x7000, 0x7fff, write16_delegate(FUNC(intv_cart_slot_device::write_rom70),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xe000, 0xefff, write16_delegate(FUNC(intv_cart_slot_device::write_rome0),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xf000, 0xffff, write16_delegate(FUNC(intv_cart_slot_device::write_romf0),(intv_cart_slot_device*)m_cart)); + + // passthru for Intellivoice expansion + m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x0080, 0x0081, read16_delegate(FUNC(intv_cart_slot_device::read_speech),(intv_cart_slot_device*)m_cart), write16_delegate(FUNC(intv_cart_slot_device::write_speech),(intv_cart_slot_device*)m_cart)); + + // passthru for RAM-equipped carts + m_maincpu->space(AS_PROGRAM).install_write_handler(0x8800, 0x8fff, write16_delegate(FUNC(intv_cart_slot_device::write_88),(intv_cart_slot_device*)m_cart)); + m_maincpu->space(AS_PROGRAM).install_write_handler(0xd000, 0xd7ff, write16_delegate(FUNC(intv_cart_slot_device::write_d0),(intv_cart_slot_device*)m_cart)); + break; + } + + m_cart->save_ram(); + } +} + + +TIMER_CALLBACK_MEMBER(intv_state::intv_interrupt_complete) +{ + m_maincpu->set_input_line(CP1610_INT_INTRM, CLEAR_LINE); + m_bus_copy_mode = 0; +} + +TIMER_CALLBACK_MEMBER(intv_state::intv_btb_fill) +{ + UINT8 row = m_backtab_row; + //m_maincpu->adjust_icount(-STIC_ROW_FETCH); + + for (int column = 0; column < STIC_BACKTAB_WIDTH; column++) + m_stic->write_to_btb(row, column, m_ram16[column + row * STIC_BACKTAB_WIDTH]); + + m_backtab_row += 1; +} + +INTERRUPT_GEN_MEMBER(intv_state::intv_interrupt) +{ + int delay = m_stic->read_row_delay(); + m_maincpu->set_input_line(CP1610_INT_INTRM, ASSERT_LINE); + m_sr1_int_pending = 1; + m_bus_copy_mode = 1; + m_backtab_row = 0; + + m_maincpu->adjust_icount(-(12*STIC_ROW_BUSRQ+STIC_FRAME_BUSRQ)); // Account for stic cycle stealing + timer_set(m_maincpu->cycles_to_attotime(STIC_VBLANK_END), TIMER_INTV_INTERRUPT_COMPLETE); + for (int row = 0; row < STIC_BACKTAB_HEIGHT; row++) + { + timer_set(m_maincpu->cycles_to_attotime(STIC_FIRST_FETCH-STIC_FRAME_BUSRQ+STIC_CYCLES_PER_SCANLINE*STIC_Y_SCALE*delay + (STIC_CYCLES_PER_SCANLINE*STIC_Y_SCALE*STIC_CARD_HEIGHT - STIC_ROW_BUSRQ)*row), TIMER_INTV_BTB_FILL); + } + + if (delay == 0) + { + m_maincpu->adjust_icount(-STIC_ROW_BUSRQ); // extra row fetch occurs if vertical delay == 0 + } + + m_stic->screenrefresh(); +} + +/* hand 0 == left, 1 == right, 2 == ECS hand controller 1, 3 == ECS hand controller 2 */ +UINT8 intv_state::intv_control_r(int hand) +{ + static const UINT8 keypad_table[] = + { + 0xFF, 0x3F, 0x9F, 0x5F, 0xD7, 0xB7, 0x77, 0xDB, + 0xBB, 0x7B, 0xDD, 0xBD, 0x7D, 0xDE, 0xBE, 0x7E + }; + + static const UINT8 disc_table[] = + { + 0xF3, 0xE3, 0xE7, 0xF7, 0xF6, 0xE6, 0xEE, 0xFE, + 0xFC, 0xEC, 0xED, 0xFD, 0xF9, 0xE9, 0xEB, 0xFB + }; + + static const UINT8 discyx_table[5][5] = + { + { 0xE3, 0xF3, 0xFB, 0xEB, 0xE9 }, + { 0xE7, 0xE3, 0xFB, 0xE9, 0xF9 }, + { 0xF7, 0xF7, 0xFF, 0xFD, 0xFD }, + { 0xF6, 0xE6, 0xFE, 0xEC, 0xED }, + { 0xE6, 0xEE, 0xFE, 0xFC, 0xEC } + }; + + int x, y; + UINT8 rv = 0xFF; + + /* keypad */ + x = m_keypad[hand]->read(); + for (y = 0; y < 16; y++) + { + if (x & (1 << y)) + { + rv &= keypad_table[y]; + } + } + + switch ((m_io_options->read() >> hand) & 1) + { + case 0: /* disc == digital */ + default: + + x = m_disc[hand]->read(); + for (y = 0; y < 16; y++) + { + if (x & (1 << y)) + { + rv &= disc_table[y]; + } + } + break; + + case 1: /* disc == _fake_ analog */ + + x = m_discx[hand]->read(); + y = m_discy[hand]->read(); + rv &= discyx_table[y / 32][x / 32]; + } + + return rv; +} + +READ8_MEMBER( intv_state::intv_left_control_r ) +{ + return intv_control_r(0); +} + +READ8_MEMBER( intv_state::intv_right_control_r ) +{ + return intv_control_r(1); +} |