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-rw-r--r--src/mame/machine/intv.cpp532
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);
+}