summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/v1050.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mess/drivers/v1050.c')
-rw-r--r--src/mess/drivers/v1050.c1155
1 files changed, 1155 insertions, 0 deletions
diff --git a/src/mess/drivers/v1050.c b/src/mess/drivers/v1050.c
new file mode 100644
index 00000000000..c33f6bec171
--- /dev/null
+++ b/src/mess/drivers/v1050.c
@@ -0,0 +1,1155 @@
+/*
+
+Visual 1050
+
+PCB Layout
+----------
+
+REV B-1
+
+|---------------------------------------------------------------------------------------------------|
+| |----------| |
+| 9216 | ROM0 | LS74 |
+| |----------| |
+-- LS00 7406 LS255 LS393 4164 4164 |
+|| |-----------| |----------| |
+|| | WD1793 | LS14 7407 - LS393 LS74 | 8251A | 4164 4164 |
+|| |-----------| | |----------| |
+|C | 4164 4164 |
+|N 7406 LS00 LS74 LS14 |C LS20 LS08 LS75 |
+|1 |N 4164 4164 |
+|| |5 |
+|| 7406 LS195 LS244 | LS04 LS32 LS08 4164 4164 |
+|| - |
+|| |------------| |--------| 4164 4164 |
+-- BAT | 8255A | | 8214 | LS139 LS32 LS138 LS17 |
+-- |------------| |--------| - 4164 4164 |
+|| |C |
+|| |--------| LS00 LS00 |N LS00 LS32 LS138 4164 4164 |
+|C | 8251A | |6 |
+|N |--------| |------------| - |------------| |
+|2 | 8255A | | Z80A | |
+|| 1488 1489 RTC |------------| LS00 LS32 |------------| LS257 LS257 |
+|| |
+-- |------------| |------------| |
+| LS04 | 8255A | | 8255A | |
+| |------------| |------------| |
+| |
+| 7404 LS257 LS257 |
+| 16MHz |
+| LS04 LS74 LS257 9016 9016 |
+| |
+-- LS74 LS04 LS74 LS163 9016 9016 |
+|| |
+|| 9016 9016 |
+|| LS02 LS163 LS74 7404 7404 |
+|| 9016 9016 |
+|| |
+|C LS244 LS10 LS257 LS362 |----------| 9016 9016 |
+|N | ROM1 | |
+|3 LS245 7404 LS273 LS32 |----------| 9016 9016 |
+|| |
+|| 7407 LS174 LS32 9016 9016 |
+|| 15.36MHz |
+|| |------------| 9016 9016 |
+-- LS09 LS04 LS12 | 6502 | |
+| |------------| 9016 9016 |
+-- |
+|C LS175 LS86 LS164 LS164 9016 9016 |
+|N |------------| |
+|4 | 6845 | LS253 LS253 |
+-- 7426 LS02 LS74 LS00 LS164 |------------| |
+| LS253 LS253 |
+| REV B-1 W/O 1059 S/N 492 |
+|---------------------------------------------------------------------------------------------------|
+
+Notes:
+ All IC's shown.
+
+ ROM0 - "IC 244-032 V1.0"
+ ROM1 - "IC 244-033 V1.0"
+ Z80A - Zilog Z8400APS Z80A CPU
+ 6502 - Synertek SY6502A CPU
+ 4164 - NEC D4164-2 64Kx1 Dynamic RAM
+ 9016 - AMD AM9016EPC 16Kx1 Dynamic RAM
+ 8214 - NEC uPB8214C Priority Interrupt Control Unit
+ 8255A - NEC D8255AC-5 Programmable Peripheral Interface
+ 8251A - NEC D8251AC Programmable Communication Interface
+ WD1793 - Mitsubishi MB8877 Floppy Disc Controller
+ 9216 - SMC FDC9216 Floppy Disk Data Separator
+ 1488 - Motorola MC1488 Quad Line EIA-232D Driver
+ 1489 - Motorola MC1489 Quad Line Receivers
+ 6845 - Hitachi HD46505SP CRT Controller
+ RTC - OKI MSM58321RS Real Time Clock
+ BAT - 3.4V battery
+ CN1 - parallel connector
+ CN2 - serial connector
+ CN3 - winchester connector
+ CN4 - monitor connector
+ CN5 - floppy data connector
+ CN6 - floppy power connector
+
+*/
+
+/*
+
+ TODO:
+
+ - write to banked RAM at 0x0000-0x1fff when ROM is active
+ - real keyboard w/i8049
+ - keyboard beeper (NE555 wired in strange mix of astable/monostable modes)
+ - Winchester (Tandon TM501/CMI CM-5412 10MB drive on Xebec S1410 controller)
+
+ chdman -createblankhd tm501.chd 306 2 32 256
+ chdman -createblankhd cm5412.chd 306 4 17 512
+
+*/
+
+#include "includes/v1050.h"
+#include "machine/scsihd.h"
+
+void v1050_state::set_interrupt(UINT8 mask, int state)
+{
+ if (state)
+ {
+ m_int_state |= mask;
+ }
+ else
+ {
+ m_int_state &= ~mask;
+ }
+
+ m_pic->r_w(~(m_int_state & m_int_mask));
+}
+
+void v1050_state::bankswitch()
+{
+ address_space *program = m_maincpu->memory().space(AS_PROGRAM);
+
+ int bank = (m_bank >> 1) & 0x03;
+
+ if (BIT(m_bank, 0))
+ {
+ program->install_readwrite_bank(0x0000, 0x1fff, "bank1");
+ membank("bank1")->set_entry(bank);
+ }
+ else
+ {
+ program->install_read_bank(0x0000, 0x1fff, "bank1");
+ program->unmap_write(0x0000, 0x1fff);
+ membank("bank1")->set_entry(3);
+ }
+
+ membank("bank2")->set_entry(bank);
+
+ if (bank == 2)
+ {
+ program->unmap_readwrite(0x4000, 0xbfff);
+ }
+ else
+ {
+ program->install_readwrite_bank(0x4000, 0x7fff, "bank3");
+ program->install_readwrite_bank(0x8000, 0xbfff, "bank4");
+ membank("bank3")->set_entry(bank);
+ membank("bank4")->set_entry(bank);
+ }
+
+ membank("bank5")->set_entry(bank);
+}
+
+// Keyboard HACK
+
+static const UINT8 V1050_KEYCODES[4][12][8] =
+{
+ { // unshifted
+ { 0xc0, 0xd4, 0xd8, 0xdc, 0xe0, 0xe4, 0xe8, 0xec },
+ { 0xf0, 0xfc, 0x90, 0xf4, 0xf8, 0x94, 0xc4, 0xc8 },
+ { 0xcc, 0xd0, 0x1b, 0x31, 0x32, 0x33, 0x34, 0x35 },
+ { 0x36, 0x37, 0x38, 0x39, 0x30, 0x2d, 0x3d, 0x60 },
+ { 0x08, 0x88, 0x8c, 0x71, 0x77, 0x65, 0x72, 0x74 },
+ { 0x79, 0x75, 0x69, 0x6f, 0x70, 0x5b, 0x5d, 0x0d },
+ { 0x7f, 0x00, 0x80, 0x61, 0x73, 0x64, 0x66, 0x67 },
+ { 0x68, 0x6a, 0x6b, 0x6c, 0x3b, 0x27, 0x5c, 0x84 },
+ { 0x00, 0x7a, 0x78, 0x63, 0x76, 0x62, 0x6e, 0x6d },
+ { 0x2c, 0x2e, 0x2f, 0x00, 0x0a, 0x20, 0x81, 0x82 },
+ { 0xb7, 0xb8, 0xb9, 0xad, 0xb4, 0xb5, 0xb6, 0xac },
+ { 0xb1, 0xb2, 0xb3, 0x83, 0xb0, 0xae, 0x00, 0x00 },
+ },
+
+ { // shifted
+ { 0xc1, 0xd5, 0xd9, 0xdd, 0xe1, 0xe5, 0xe9, 0xed },
+ { 0xf1, 0xfd, 0x91, 0xf5, 0xf9, 0x95, 0xc5, 0xc9 },
+ { 0xcd, 0xd1, 0x1b, 0x21, 0x40, 0x23, 0x24, 0x25 },
+ { 0x5e, 0x26, 0x2a, 0x28, 0x29, 0x5f, 0x2b, 0x7e },
+ { 0x08, 0x89, 0x8d, 0x51, 0x57, 0x45, 0x52, 0x54 },
+ { 0x59, 0x55, 0x49, 0x4f, 0x50, 0x7b, 0x7d, 0x0d },
+ { 0x7f, 0x00, 0x80, 0x41, 0x53, 0x44, 0x46, 0x47 },
+ { 0x48, 0x4a, 0x4b, 0x4c, 0x3a, 0x22, 0x7c, 0x85 },
+ { 0x00, 0x5a, 0x58, 0x43, 0x56, 0x42, 0x4e, 0x4d },
+ { 0x3c, 0x3e, 0x3f, 0x0a, 0x20, 0x81, 0x82, 0xb7 },
+ { 0xb8, 0xb9, 0xad, 0xb4, 0xb5, 0xb6, 0xac, 0xb1 },
+ { 0xb2, 0xb3, 0x83, 0xb0, 0xa0, 0x00, 0x00, 0x00 },
+ },
+
+ { // control
+ { 0xc2, 0xd6, 0xda, 0xde, 0xe2, 0xe6, 0xea, 0xee },
+ { 0xf2, 0xfe, 0x92, 0xf6, 0xfa, 0x96, 0xc6, 0xca },
+ { 0xce, 0xd2, 0x1b, 0x31, 0x32, 0x33, 0x34, 0x35 },
+ { 0x36, 0x37, 0x38, 0x39, 0x30, 0x2d, 0x3d, 0x00 },
+ { 0x08, 0x8a, 0x8e, 0x11, 0x17, 0x05, 0x12, 0x14 },
+ { 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1b, 0x1d, 0x0d },
+ { 0x7f, 0x00, 0x80, 0x01, 0x13, 0x04, 0x06, 0x07 },
+ { 0x08, 0x0a, 0x0b, 0x0c, 0x3b, 0x27, 0x1c, 0x86 },
+ { 0x00, 0x1a, 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d },
+ { 0x2c, 0x2e, 0x2f, 0x0a, 0x20, 0x81, 0x82, 0xb7 },
+ { 0xb8, 0xb9, 0xad, 0xb4, 0xb5, 0xb6, 0xac, 0xb1 },
+ { 0xb2, 0xb3, 0x83, 0xb0, 0xae, 0x00, 0x00, 0x00 },
+ },
+
+ { // shift & control
+ { 0xc3, 0xd7, 0xdb, 0xdf, 0xe3, 0xe7, 0xeb, 0xef },
+ { 0xf3, 0xff, 0x93, 0xf7, 0xfb, 0x97, 0xc7, 0xcb },
+ { 0xcf, 0xd3, 0x1b, 0x21, 0x00, 0x23, 0x24, 0x25 },
+ { 0x1e, 0x26, 0x2a, 0x28, 0x29, 0x1f, 0x2b, 0x1e },
+ { 0x08, 0x8b, 0x8f, 0x11, 0x17, 0x05, 0x12, 0x14 },
+ { 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1b, 0x1d, 0x0d },
+ { 0x7f, 0x00, 0x80, 0x01, 0x13, 0x04, 0x06, 0x07 },
+ { 0x08, 0x0a, 0x0b, 0x0c, 0x3a, 0x22, 0x1c, 0x87 },
+ { 0x00, 0x1a, 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d },
+ { 0x3c, 0x3e, 0x3f, 0x0a, 0x20, 0x81, 0x82, 0xb7 },
+ { 0xb8, 0xb9, 0xad, 0xb4, 0xb5, 0xb6, 0xac, 0xb1 },
+ { 0xb2, 0xb3, 0x83, 0xb0, 0xae, 0x00, 0x00, 0x00 },
+ }
+};
+
+void v1050_state::scan_keyboard()
+{
+ static const char *const keynames[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6", "ROW7", "ROW8", "ROW9", "ROW10", "ROW11" };
+ int table = 0, row, col;
+ int keydata = 0xff;
+
+ UINT8 line_mod = ioport("ROW12")->read();
+
+ if((line_mod & 0x07) && (line_mod & 0x18))
+ {
+ table = 3; // shift & control
+ }
+ else if (line_mod & 0x07)
+ {
+ table = 1; // shifted
+ }
+ else if (line_mod & 0x18)
+ {
+ table = 2; // ctrl
+ }
+
+ // scan keyboard
+ for (row = 0; row < 12; row++)
+ {
+ UINT8 data = ioport(keynames[row])->read();
+
+ for (col = 0; col < 8; col++)
+ {
+ if (!BIT(data, col))
+ {
+ // latch key data
+ keydata = V1050_KEYCODES[table][row][col];
+
+ if (m_keydata != keydata)
+ {
+ m_keydata = keydata;
+ m_keyavail = 1;
+
+ set_interrupt(INT_KEYBOARD, 1);
+ return;
+ }
+ }
+ }
+ }
+
+ m_keydata = keydata;
+}
+
+static TIMER_DEVICE_CALLBACK( v1050_keyboard_tick )
+{
+ v1050_state *state = timer.machine().driver_data<v1050_state>();
+
+ state->scan_keyboard();
+}
+
+READ8_MEMBER( v1050_state::kb_data_r )
+{
+ m_keyavail = 0;
+
+ set_interrupt(INT_KEYBOARD, 0);
+
+ return m_keydata;
+}
+
+READ8_MEMBER( v1050_state::kb_status_r )
+{
+ UINT8 val = m_uart_kb->status_r(space, 0);
+
+ return val | (m_keyavail ? 0x02 : 0x00);
+}
+
+// Z80 Read/Write Handlers
+
+WRITE8_MEMBER( v1050_state::v1050_i8214_w )
+{
+ m_pic->b_w((data >> 1) & 0x07);
+ m_pic->sgs_w(BIT(data, 4));
+}
+
+READ8_MEMBER( v1050_state::vint_clr_r )
+{
+ set_interrupt(INT_VSYNC, 0);
+
+ return 0xff;
+}
+
+WRITE8_MEMBER( v1050_state::vint_clr_w )
+{
+ set_interrupt(INT_VSYNC, 0);
+}
+
+READ8_MEMBER( v1050_state::dint_clr_r )
+{
+ set_interrupt(INT_DISPLAY, 0);
+
+ return 0xff;
+}
+
+WRITE8_MEMBER( v1050_state::dint_clr_w )
+{
+ set_interrupt(INT_DISPLAY, 0);
+}
+
+WRITE8_MEMBER( v1050_state::bank_w )
+{
+ m_bank = data;
+
+ bankswitch();
+}
+
+// SY6502A Read/Write Handlers
+
+WRITE8_MEMBER( v1050_state::dint_w )
+{
+ set_interrupt(INT_DISPLAY, 1);
+}
+
+WRITE8_MEMBER( v1050_state::dvint_clr_w )
+{
+ device_set_input_line(m_subcpu, INPUT_LINE_IRQ0, CLEAR_LINE);
+}
+
+READ8_MEMBER( v1050_state::sasi_status_r )
+{
+ /*
+
+ bit description
+
+ 0 REQ-
+ 1 BUSY
+ 2 MESSAGE
+ 3 C/D-
+ 4 I-/O
+ 5
+ 6
+ 7
+
+ */
+
+ UINT8 data = 0;
+
+ data |= scsi_req_r(m_sasibus);
+ data |= !scsi_bsy_r(m_sasibus) << 1;
+ data |= !scsi_msg_r(m_sasibus) << 2;
+ data |= !scsi_cd_r(m_sasibus) << 3;
+ data |= scsi_io_r(m_sasibus) << 4;
+
+ return data;
+}
+
+static TIMER_DEVICE_CALLBACK( sasi_ack_tick )
+{
+ v1050_state *state = timer.machine().driver_data<v1050_state>();
+
+ scsi_ack_w(state->m_sasibus, 1);
+}
+
+static TIMER_DEVICE_CALLBACK( sasi_rst_tick )
+{
+ v1050_state *state = timer.machine().driver_data<v1050_state>();
+
+ scsi_rst_w(state->m_sasibus, 1);
+}
+
+WRITE8_MEMBER( v1050_state::sasi_ctrl_w )
+{
+ /*
+
+ bit description
+
+ 0 SEL
+ 1 ACK
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7 RST
+
+ */
+
+ scsi_sel_w(m_sasibus, !BIT(data, 0));
+
+ if (BIT(data, 1))
+ {
+ // send acknowledge pulse
+ scsi_ack_w(m_sasibus, 0);
+
+ m_timer_ack->adjust(attotime::from_nsec(100));
+ }
+
+ if (BIT(data, 7))
+ {
+ // send reset pulse
+ scsi_rst_w(m_sasibus, 0);
+
+ m_timer_rst->adjust(attotime::from_nsec(100));
+ }
+}
+
+// Memory Maps
+
+static ADDRESS_MAP_START( v1050_mem, AS_PROGRAM, 8, v1050_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x1fff) AM_RAMBANK("bank1")
+ AM_RANGE(0x2000, 0x3fff) AM_RAMBANK("bank2")
+ AM_RANGE(0x4000, 0x7fff) AM_RAMBANK("bank3")
+ AM_RANGE(0x8000, 0xbfff) AM_RAMBANK("bank4")
+ AM_RANGE(0xc000, 0xffff) AM_RAMBANK("bank5")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( v1050_io, AS_IO, 8, v1050_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x84, 0x87) AM_DEVREADWRITE(I8255A_DISP_TAG, i8255_device, read, write)
+// AM_RANGE(0x88, 0x88) AM_DEVREADWRITE(I8251A_KB_TAG, i8251_device, data_r, data_w)
+// AM_RANGE(0x89, 0x89) AM_DEVREADWRITE(I8251A_KB_TAG, i8251_device, status_r, control_w)
+ AM_RANGE(0x88, 0x88) AM_READ(kb_data_r) AM_DEVWRITE(I8251A_KB_TAG, i8251_device, data_w)
+ AM_RANGE(0x89, 0x89) AM_READ(kb_status_r) AM_DEVWRITE(I8251A_KB_TAG, i8251_device, control_w)
+ AM_RANGE(0x8c, 0x8c) AM_DEVREADWRITE(I8251A_SIO_TAG, i8251_device, data_r, data_w)
+ AM_RANGE(0x8d, 0x8d) AM_DEVREADWRITE(I8251A_SIO_TAG, i8251_device, status_r, control_w)
+ AM_RANGE(0x90, 0x93) AM_DEVREADWRITE(I8255A_MISC_TAG, i8255_device, read, write)
+ AM_RANGE(0x94, 0x97) AM_DEVREADWRITE_LEGACY(MB8877_TAG, wd17xx_r, wd17xx_w)
+ AM_RANGE(0x9c, 0x9f) AM_DEVREADWRITE(I8255A_RTC_TAG, i8255_device, read, write)
+ AM_RANGE(0xa0, 0xa0) AM_READWRITE(vint_clr_r, vint_clr_w)
+ AM_RANGE(0xb0, 0xb0) AM_READWRITE(dint_clr_r, dint_clr_w)
+ AM_RANGE(0xc0, 0xc0) AM_WRITE(v1050_i8214_w)
+ AM_RANGE(0xd0, 0xd0) AM_WRITE(bank_w)
+ AM_RANGE(0xe0, 0xe0) AM_DEVREADWRITE_LEGACY(SASIBUS_TAG, scsi_data_r, scsi_data_w)
+ AM_RANGE(0xe1, 0xe1) AM_READWRITE(sasi_status_r, sasi_ctrl_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( v1050_crt_mem, AS_PROGRAM, 8, v1050_state )
+ AM_RANGE(0x0000, 0x7fff) AM_READWRITE(videoram_r, videoram_w) AM_SHARE("video_ram")
+ AM_RANGE(0x8000, 0x8000) AM_DEVWRITE(H46505_TAG, mc6845_device, address_w)
+ AM_RANGE(0x8001, 0x8001) AM_DEVREADWRITE(H46505_TAG, mc6845_device, register_r, register_w)
+ AM_RANGE(0x9000, 0x9003) AM_DEVREADWRITE(I8255A_M6502_TAG, i8255_device, read, write)
+ AM_RANGE(0xa000, 0xa000) AM_READWRITE(attr_r, attr_w)
+ AM_RANGE(0xb000, 0xb000) AM_WRITE(dint_w)
+ AM_RANGE(0xc000, 0xc000) AM_WRITE(dvint_clr_w)
+ AM_RANGE(0xe000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+// Input Ports
+
+static INPUT_PORTS_START( v1050 )
+ PORT_START("ROW0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) // HELP
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F5)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F6)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F7)
+
+ PORT_START("ROW1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F8)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F9)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F10)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F11)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F12)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F13)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F14)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F15)
+
+ PORT_START("ROW2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) // F16
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) // F17
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+
+ PORT_START("ROW3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~')
+
+ PORT_START("ROW4")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BACKSPACE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK") PORT_CODE(KEYCODE_PAUSE)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
+
+ PORT_START("ROW5")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
+
+ PORT_START("ROW6")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
+
+ PORT_START("ROW7")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SCRLOCK)
+
+ PORT_START("ROW8")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) // SHIFT
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
+
+ PORT_START("ROW9")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) // SHIFT
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LINE FEED") PORT_CODE(KEYCODE_ENTER_PAD)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_NUMLOCK) // DOWN
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_NUMLOCK) // UP
+
+ PORT_START("ROW10")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 7") PORT_CODE(KEYCODE_7_PAD)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 8") PORT_CODE(KEYCODE_8_PAD)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 9") PORT_CODE(KEYCODE_9_PAD)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad -") PORT_CODE(KEYCODE_MINUS_PAD)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 4") PORT_CODE(KEYCODE_4_PAD)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 5") PORT_CODE(KEYCODE_5_PAD)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 6") PORT_CODE(KEYCODE_6_PAD)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
+
+ PORT_START("ROW11")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 1") PORT_CODE(KEYCODE_1_PAD)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 2") PORT_CODE(KEYCODE_2_PAD)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 3") PORT_CODE(KEYCODE_3_PAD)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 0") PORT_CODE(KEYCODE_0_PAD)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad +") PORT_CODE(KEYCODE_PLUS_PAD)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
+
+ PORT_START("ROW12")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT SHIFT") PORT_CODE(KEYCODE_RSHIFT)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT CTRL") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
+INPUT_PORTS_END
+
+// 8214 Interface
+
+static WRITE_LINE_DEVICE_HANDLER( pic_int_w )
+{
+ if (state == ASSERT_LINE)
+ {
+ device_set_input_line(device, INPUT_LINE_IRQ0, ASSERT_LINE);
+ }
+}
+
+static I8214_INTERFACE( pic_intf )
+{
+ DEVCB_DEVICE_LINE(Z80_TAG, pic_int_w),
+ DEVCB_NULL
+};
+
+// MSM58321 Interface
+
+static MSM58321_INTERFACE( rtc_intf )
+{
+ DEVCB_NULL
+};
+
+// Display 8255A Interface
+
+static WRITE8_DEVICE_HANDLER( disp_ppi_pc_w )
+{
+ i8255_device *ppi = static_cast<i8255_device*>(device);
+
+ ppi->pc2_w(BIT(data, 6));
+ ppi->pc4_w(BIT(data, 7));
+}
+
+static I8255A_INTERFACE( disp_ppi_intf )
+{
+ DEVCB_DEVICE_MEMBER(I8255A_M6502_TAG, i8255_device, pb_r), // Port A read
+ DEVCB_NULL, // Port A write
+ DEVCB_NULL, // Port B read
+ DEVCB_NULL, // Port B write
+ DEVCB_NULL, // Port C read
+ DEVCB_DEVICE_HANDLER(I8255A_M6502_TAG, disp_ppi_pc_w) // Port C write
+};
+
+static WRITE8_DEVICE_HANDLER( m6502_ppi_pc_w )
+{
+ i8255_device *ppi = static_cast<i8255_device*>(device);
+
+ ppi->pc2_w(BIT(data, 7));
+ ppi->pc4_w(BIT(data, 6));
+}
+
+static I8255A_INTERFACE( m6502_ppi_intf )
+{
+ DEVCB_DEVICE_MEMBER(I8255A_DISP_TAG, i8255_device, pb_r), // Port A read
+ DEVCB_NULL, // Port A write
+ DEVCB_NULL, // Port B read
+ DEVCB_NULL, // Port B write
+ DEVCB_NULL, // Port C read
+ DEVCB_DEVICE_HANDLER(I8255A_DISP_TAG, m6502_ppi_pc_w) // Port C write
+};
+
+// Miscellanous 8255A Interface
+
+WRITE8_MEMBER( v1050_state::misc_ppi_pa_w )
+{
+ /*
+
+ bit signal description
+
+ PA0 f_ds<0> drive 0 select
+ PA1 f_ds<1> drive 1 select
+ PA2 f_ds<2> drive 2 select
+ PA3 f_ds<3> drive 3 select
+ PA4 f_side_1 floppy side select
+ PA5 f_pre_comp precompensation
+ PA6 f_motor_on* floppy motor
+ PA7 f_dden* double density select
+
+ */
+
+ int f_motor_on = !BIT(data, 6);
+
+ // floppy drive select
+ if (!BIT(data, 0)) wd17xx_set_drive(m_fdc, 0);
+ if (!BIT(data, 1)) wd17xx_set_drive(m_fdc, 1);
+ if (!BIT(data, 2)) wd17xx_set_drive(m_fdc, 2);
+ if (!BIT(data, 3)) wd17xx_set_drive(m_fdc, 3);
+
+ // floppy side select
+ wd17xx_set_side(m_fdc, BIT(data, 4));
+
+ // floppy motor
+ floppy_mon_w(m_floppy0, BIT(data, 6));
+ floppy_mon_w(m_floppy1, BIT(data, 6));
+ floppy_drive_set_ready_state(m_floppy0, f_motor_on, 1);
+ floppy_drive_set_ready_state(m_floppy1, f_motor_on, 1);
+
+ // density select
+ wd17xx_dden_w(m_fdc, BIT(data, 7));
+}
+
+static WRITE8_DEVICE_HANDLER( misc_ppi_pb_w )
+{
+ centronics_device *centronics = device->machine().device<centronics_device>(CENTRONICS_TAG);
+ centronics->write( *device->machine().memory().first_space() , 0, ~data & 0xff);
+}
+
+static READ8_DEVICE_HANDLER( misc_ppi_pc_r )
+{
+ /*
+
+ bit signal description
+
+ PC0 pr_strobe printer strobe
+ PC1 f_int_enb floppy interrupt enable
+ PC2 baud_sel_a
+ PC3 baud_sel_b
+ PC4 pr_busy* printer busy
+ PC5 pr_pe* printer paper end
+ PC6
+ PC7
+
+ */
+
+ UINT8 data = 0;
+ centronics_device *centronics = device->machine().device<centronics_device>(CENTRONICS_TAG);
+ data |= centronics->not_busy_r() << 4;
+ data |= centronics->pe_r() << 5;
+
+ return data;
+}
+
+WRITE8_MEMBER( v1050_state::misc_ppi_pc_w )
+{
+ /*
+
+ bit signal description
+
+ PC0 pr_strobe printer strobe
+ PC1 f_int_enb floppy interrupt enable
+ PC2 baud_sel_a
+ PC3 baud_sel_b
+ PC4 pr_busy* printer busy
+ PC5 pr_pe* printer paper end
+ PC6
+ PC7
+
+ */
+
+ // printer strobe
+ m_centronics->strobe_w(BIT(data, 0));
+
+ // floppy interrupt enable
+ m_f_int_enb = BIT(data, 1);
+
+ if (!m_f_int_enb)
+ {
+ set_interrupt(INT_FLOPPY, 0);
+ device_set_input_line(m_maincpu, INPUT_LINE_NMI, CLEAR_LINE);
+ }
+
+ // baud select
+ int baud_sel = (data >> 2) & 0x03;
+
+ if (baud_sel != m_baud_sel)
+ {
+ attotime period = attotime::never;
+
+ switch (baud_sel)
+ {
+ case 0: period = attotime::from_hz((double)XTAL_16MHz/4/13/16); break;
+ case 1: period = attotime::from_hz((double)XTAL_16MHz/4/13/8); break;
+ case 2: period = attotime::from_hz((double)XTAL_16MHz/4/8); break;
+ case 3: period = attotime::from_hz((double)XTAL_16MHz/4/13/2); break;
+ }
+
+ m_timer_sio->adjust(attotime::zero, 0, period);
+
+ m_baud_sel = baud_sel;
+ }
+}
+
+static I8255A_INTERFACE( misc_ppi_intf )
+{
+ DEVCB_NULL, // Port A read
+ DEVCB_DRIVER_MEMBER(v1050_state, misc_ppi_pa_w), // Port A write
+ DEVCB_NULL, // Port B read
+ DEVCB_DEVICE_HANDLER(CENTRONICS_TAG, misc_ppi_pb_w), // Port B write
+ DEVCB_DEVICE_HANDLER(CENTRONICS_TAG, misc_ppi_pc_r), // Port C read
+ DEVCB_DRIVER_MEMBER(v1050_state, misc_ppi_pc_w) // Port C write
+};
+
+// Real Time Clock 8255A Interface
+
+WRITE8_MEMBER( v1050_state::rtc_ppi_pb_w )
+{
+ /*
+
+ bit signal description
+
+ PB0 RS-232
+ PB1 Winchester
+ PB2 keyboard
+ PB3 floppy disk interrupt
+ PB4 vertical interrupt
+ PB5 display interrupt
+ PB6 expansion B
+ PB7 expansion A
+
+ */
+
+ m_int_mask = data;
+}
+
+READ8_MEMBER( v1050_state::rtc_ppi_pc_r )
+{
+ /*
+
+ bit signal description
+
+ PC0
+ PC1
+ PC2
+ PC3 clock busy
+ PC4
+ PC5
+ PC6
+ PC7
+
+ */
+
+ return m_rtc->busy_r() << 3;
+}
+
+WRITE8_MEMBER( v1050_state::rtc_ppi_pc_w )
+{
+ /*
+
+ bit signal description
+
+ PC0
+ PC1
+ PC2
+ PC3
+ PC4 clock address write
+ PC5 clock data write
+ PC6 clock data read
+ PC7 clock device select
+
+ */
+
+ m_rtc->address_write_w(BIT(data, 4));
+ m_rtc->write_w(BIT(data, 5));
+ m_rtc->read_w(BIT(data, 6));
+ m_rtc->cs2_w(BIT(data, 7));
+}
+
+static I8255A_INTERFACE( rtc_ppi_intf )
+{
+ DEVCB_DEVICE_MEMBER(MSM58321RS_TAG, msm58321_device, read),
+ DEVCB_DEVICE_MEMBER(MSM58321RS_TAG, msm58321_device, write),
+ DEVCB_NULL,
+ DEVCB_DRIVER_MEMBER(v1050_state, rtc_ppi_pb_w),
+ DEVCB_DRIVER_MEMBER(v1050_state, rtc_ppi_pc_r),
+ DEVCB_DRIVER_MEMBER(v1050_state, rtc_ppi_pc_w)
+};
+
+// Keyboard 8251A Interface
+
+static TIMER_DEVICE_CALLBACK( kb_8251_tick )
+{
+ v1050_state *state = timer.machine().driver_data<v1050_state>();
+
+ state->m_uart_kb->transmit_clock();
+ state->m_uart_kb->receive_clock();
+}
+
+WRITE_LINE_MEMBER( v1050_state::kb_rxrdy_w )
+{
+ set_interrupt(INT_KEYBOARD, state);
+}
+
+static const i8251_interface kb_8251_intf =
+{
+ DEVCB_DEVICE_LINE_MEMBER(V1050_KEYBOARD_TAG, v1050_keyboard_device, so_r),
+ DEVCB_DEVICE_LINE_MEMBER(V1050_KEYBOARD_TAG, v1050_keyboard_device, si_w),
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_DRIVER_LINE_MEMBER(v1050_state, kb_rxrdy_w),
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL
+};
+
+// Serial 8251A Interface
+
+static TIMER_DEVICE_CALLBACK( sio_8251_tick )
+{
+ v1050_state *state = timer.machine().driver_data<v1050_state>();
+
+ state->m_uart_sio->transmit_clock();
+ state->m_uart_sio->receive_clock();
+}
+
+WRITE_LINE_MEMBER( v1050_state::sio_rxrdy_w )
+{
+ m_rxrdy = state;
+
+ set_interrupt(INT_RS_232, m_rxrdy | m_txrdy);
+}
+
+WRITE_LINE_MEMBER( v1050_state::sio_txrdy_w )
+{
+ m_txrdy = state;
+
+ set_interrupt(INT_RS_232, m_rxrdy | m_txrdy);
+}
+
+static const i8251_interface sio_8251_intf =
+{
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_DRIVER_LINE_MEMBER(v1050_state, sio_rxrdy_w),
+ DEVCB_DRIVER_LINE_MEMBER(v1050_state, sio_txrdy_w),
+ DEVCB_NULL,
+ DEVCB_NULL
+};
+
+// MB8877 Interface
+
+WRITE_LINE_MEMBER( v1050_state::fdc_intrq_w )
+{
+ if (m_f_int_enb)
+ {
+ set_interrupt(INT_FLOPPY, state);
+ }
+ else
+ {
+ set_interrupt(INT_FLOPPY, 0);
+ }
+}
+
+WRITE_LINE_MEMBER( v1050_state::fdc_drq_w )
+{
+ if (m_f_int_enb)
+ {
+ device_set_input_line(m_maincpu, INPUT_LINE_NMI, state);
+ }
+ else
+ {
+ device_set_input_line(m_maincpu, INPUT_LINE_NMI, CLEAR_LINE);
+ }
+}
+
+static const wd17xx_interface fdc_intf =
+{
+ DEVCB_NULL,
+ DEVCB_DRIVER_LINE_MEMBER(v1050_state, fdc_intrq_w),
+ DEVCB_DRIVER_LINE_MEMBER(v1050_state, fdc_drq_w),
+ { FLOPPY_0, FLOPPY_1, NULL, NULL }
+};
+
+static LEGACY_FLOPPY_OPTIONS_START( v1050 )
+ LEGACY_FLOPPY_OPTION( v1050, "dsk", "Visual 1050 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
+ HEADS([1])
+ TRACKS([80])
+ SECTORS([10])
+ SECTOR_LENGTH([512])
+ FIRST_SECTOR_ID([1]))
+LEGACY_FLOPPY_OPTIONS_END
+
+static const floppy_interface v1050_floppy_interface =
+{
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ FLOPPY_STANDARD_5_25_DSHD,
+ LEGACY_FLOPPY_OPTIONS_NAME(v1050),
+ "floppy_5_25",
+ NULL
+};
+
+
+//-------------------------------------------------
+// SCSIBus_interface sasi_intf
+//-------------------------------------------------
+
+static const SCSIConfigTable sasi_dev_table =
+{
+ 1,
+ {
+ { SCSI_ID_0, "harddisk0" }
+ }
+};
+
+static const SCSIBus_interface sasi_intf =
+{
+ &sasi_dev_table,
+ NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL
+};
+
+// Machine Initialization
+
+static IRQ_CALLBACK( v1050_int_ack )
+{
+ v1050_state *state = device->machine().driver_data<v1050_state>();
+
+ UINT8 vector = 0xf0 | (state->m_pic->a_r() << 1);
+
+ //logerror("Interrupt Acknowledge Vector: %02x\n", vector);
+
+ device_set_input_line(state->m_maincpu, INPUT_LINE_IRQ0, CLEAR_LINE);
+
+ return vector;
+}
+
+void v1050_state::machine_start()
+{
+ address_space *program = m_maincpu->memory().space(AS_PROGRAM);
+
+ // initialize SASI bus
+ init_scsibus(m_sasibus, 256);
+
+ // initialize I8214
+ m_pic->etlg_w(1);
+ m_pic->inte_w(1);
+
+ // initialize RTC
+ m_rtc->cs1_w(1);
+
+ // set CPU interrupt callback
+ device_set_irq_callback(m_maincpu, v1050_int_ack);
+
+ // setup memory banking
+ UINT8 *ram = machine().device<ram_device>(RAM_TAG)->pointer();
+
+ membank("bank1")->configure_entries(0, 2, ram, 0x10000);
+ membank("bank1")->configure_entry(2, ram + 0x1c000);
+ membank("bank1")->configure_entry(3, memregion(Z80_TAG)->base());
+
+ program->install_readwrite_bank(0x2000, 0x3fff, "bank2");
+ membank("bank2")->configure_entries(0, 2, ram + 0x2000, 0x10000);
+ membank("bank2")->configure_entry(2, ram + 0x1e000);
+
+ program->install_readwrite_bank(0x4000, 0x7fff, "bank3");
+ membank("bank3")->configure_entries(0, 2, ram + 0x4000, 0x10000);
+
+ program->install_readwrite_bank(0x8000, 0xbfff, "bank4");
+ membank("bank4")->configure_entries(0, 2, ram + 0x8000, 0x10000);
+
+ program->install_readwrite_bank(0xc000, 0xffff, "bank5");
+ membank("bank5")->configure_entries(0, 3, ram + 0xc000, 0);
+
+ bankswitch();
+
+ // register for state saving
+ save_item(NAME(m_int_mask));
+ save_item(NAME(m_int_state));
+ save_item(NAME(m_f_int_enb));
+ save_item(NAME(m_keylatch));
+ save_item(NAME(m_keydata));
+ save_item(NAME(m_keyavail));
+ save_item(NAME(m_rxrdy));
+ save_item(NAME(m_txrdy));
+ save_item(NAME(m_baud_sel));
+ save_item(NAME(m_bank));
+}
+
+void v1050_state::machine_reset()
+{
+ m_bank = 0;
+
+ bankswitch();
+
+ m_timer_sio->adjust(attotime::zero, 0, attotime::from_hz((double)XTAL_16MHz/4/13/16));
+}
+
+// Machine Driver
+
+static MACHINE_CONFIG_START( v1050, v1050_state )
+ // basic machine hardware
+ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_16MHz/4)
+ MCFG_CPU_PROGRAM_MAP(v1050_mem)
+ MCFG_CPU_IO_MAP(v1050_io)
+ MCFG_QUANTUM_PERFECT_CPU(Z80_TAG)
+
+ MCFG_CPU_ADD(M6502_TAG, M6502, XTAL_15_36MHz/16)
+ MCFG_CPU_PROGRAM_MAP(v1050_crt_mem)
+ MCFG_QUANTUM_PERFECT_CPU(M6502_TAG)
+
+ // keyboard HACK
+ MCFG_TIMER_ADD_PERIODIC("keyboard", v1050_keyboard_tick, attotime::from_hz(60))
+
+ // video hardware
+ MCFG_FRAGMENT_ADD(v1050_video)
+
+ // devices
+ MCFG_I8214_ADD(UPB8214_TAG, XTAL_16MHz/4, pic_intf)
+ MCFG_MSM58321_ADD(MSM58321RS_TAG, XTAL_32_768kHz, rtc_intf)
+ MCFG_I8255A_ADD(I8255A_DISP_TAG, disp_ppi_intf)
+ MCFG_I8255A_ADD(I8255A_MISC_TAG, misc_ppi_intf)
+ MCFG_I8255A_ADD(I8255A_RTC_TAG, rtc_ppi_intf)
+ MCFG_I8255A_ADD(I8255A_M6502_TAG, m6502_ppi_intf)
+ MCFG_I8251_ADD(I8251A_KB_TAG, /*XTAL_16MHz/8,*/ kb_8251_intf)
+ MCFG_I8251_ADD(I8251A_SIO_TAG, /*XTAL_16MHz/8,*/ sio_8251_intf)
+ MCFG_MB8877_ADD(MB8877_TAG, /*XTAL_16MHz/16,*/ fdc_intf )
+ MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(v1050_floppy_interface)
+ MCFG_TIMER_ADD_PERIODIC(TIMER_KB_TAG, kb_8251_tick, attotime::from_hz((double)XTAL_16MHz/4/13/8))
+ MCFG_TIMER_ADD(TIMER_SIO_TAG, sio_8251_tick)
+
+ // SASI bus
+ MCFG_SCSIBUS_ADD(SASIBUS_TAG, sasi_intf)
+ MCFG_TIMER_ADD(TIMER_ACK_TAG, sasi_ack_tick)
+ MCFG_TIMER_ADD(TIMER_RST_TAG, sasi_rst_tick)
+ MCFG_DEVICE_ADD("harddisk0", SCSIHD, 0)
+
+ // keyboard
+ MCFG_V1050_KEYBOARD_ADD()
+
+ // software lists
+ MCFG_SOFTWARE_LIST_ADD("disk_list","v1050")
+
+ // printer
+ MCFG_CENTRONICS_PRINTER_ADD(CENTRONICS_TAG, standard_centronics)
+
+ // internal ram
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("128K")
+MACHINE_CONFIG_END
+
+// ROMs
+
+ROM_START( v1050 )
+ ROM_REGION( 0x10000, Z80_TAG, 0 )
+ ROM_LOAD( "e244-032 rev 1.2.u86", 0x0000, 0x2000, CRC(46f847a7) SHA1(374db7a38a9e9230834ce015006e2f1996b9609a) )
+
+ ROM_REGION( 0x10000, M6502_TAG, 0 )
+ ROM_LOAD( "e244-033 rev 1.1.u77", 0xe000, 0x2000, CRC(c0502b66) SHA1(bc0015f5b14f98110e652eef9f7c57c614683be5) )
+ROM_END
+
+// System Drivers
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS
+COMP( 1983, v1050, 0, 0, v1050, v1050, driver_device, 0, "Visual Technology Inc", "Visual 1050", GAME_IMPERFECT_GRAPHICS | GAME_SUPPORTS_SAVE | GAME_NO_SOUND | GAME_IMPERFECT_KEYBOARD )