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+// license:GPL-2.0+
+// copyright-holders:Kevin Thacker
+/******************************************************************************
+
+ pcw.c
+ system driver
+
+ Kevin Thacker [MESS driver]
+
+ Thankyou to Jacob Nevins, Richard Fairhurst and Cliff Lawson,
+ for their documentation that I used for the development of this
+ driver.
+
+ PCW came in 4 forms.
+ PCW8256, PCW8512, PCW9256, PCW9512
+
+ These systems were nicknamed "Joyce", apparently after a secretary who worked at
+ Amstrad plc.
+
+ These machines were designed for wordprocessing and other business applications.
+
+ The computer came with Locoscript (wordprocessor by Locomotive Software Ltd),
+ and CP/M+ (3.1).
+
+ The original PCW8256 system came with a keyboard, green-screen monitor
+ (which had 2 3" 80 track, double sided disc drives mounted vertically in it),
+ and a dedicated printer. The other systems had different design but shared the
+ same hardware.
+
+ Since it was primarily designed as a wordprocessor, there were not many games
+ written.
+ Some of the games available:
+ - Head Over Heels
+ - Infocom adventures (Hitchhikers Guide to the Galaxy etc)
+
+ However, it can use the CP/M OS, there is a large variety of CPM software that will
+ run on it!!!!!!!!!!!!!!
+
+ Later systems had:
+ - black/white monitor,
+ - dedicated printer was removed, and support for any printer was added
+ - 3" internal drive replaced by a 3.5" drive
+
+ All the logic for the system, except the FDC was found in a Amstrad designed custom
+ chip.
+
+ In the original PCW8256, there was no boot-rom. A boot-program was stored in the printer
+ chip, and this was activated when the PCW was first switched on. AFAIK there are no
+ dumps of this program, so I have written my own replacement.
+
+ The boot-program performs a simple task: Load sector 0, track 0 to &f000 in ram, and execute
+ &f010.
+
+ From here CP/M is booted, and the appropiate programs can be run.
+
+ The hardware:
+ - Z80 CPU running at 3.4 MHz
+ - UPD765 FDC
+ - mono display
+ - beep (a fixed Hz tone which can be turned on/off)
+ - 720x256 (PAL) bitmapped display, 720x200 (NTSC) bitmapped display
+ - Amstrad CPC6128 style keyboard
+
+ If there are special roms for any of the PCW series I would be interested in them
+ so I can implement the driver properly.
+
+ From comp.sys.amstrad.8bit FAQ:
+
+ "Amstrad made the following PCW systems :
+
+ - 1) PCW8256
+ - 2) PCW8512
+ - 3) PCW9512
+ - 4) PCW9512+
+ - 5) PcW10
+ - 6) PcW16
+
+ 1 had 180K drives, 2 had a 180K A drive and a 720K B drive, 3 had only
+ 720K drives. All subsequent models had 3.5" disks using CP/M format at
+ 720K until 6 when it switched to 1.44MB in MS-DOS format. The + of
+ model 4 was that it had a "real" parallel interface so could be sold
+ with an external printer such as the Canon BJ10. The PcW10 wasn't
+ really anything more than 4 in a more modern looking case.
+
+ The PcW16 is a radical digression who's sole "raison d'etre" was to
+ make a true WYSIWYG product but this meant a change in the screen and
+ processor (to 16MHz) etc. which meant that it could not be kept
+ compatible with the previous models (though documents ARE compatible)"
+
+
+ TODO:
+ - Printer hardware emulation (8256 etc)
+ - Parallel port emulation (9512, 9512+, 10)
+ - emulation of serial hardware
+ - emulation of other hardware...?
+ ******************************************************************************/
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "cpu/mcs48/mcs48.h"
+#include "machine/i8243.h"
+// upd765 interface
+#include "machine/upd765.h"
+// pcw video hardware
+#include "includes/pcw.h"
+// pcw/pcw16 beeper
+#include "sound/beep.h"
+#include "machine/ram.h"
+
+#include "pcw.lh"
+
+#define VERBOSE 1
+#define LOG(x) do { if (VERBOSE) logerror x; } while (0)
+
+static const UINT8 half_step_table[4] = { 0x01, 0x02, 0x04, 0x08 };
+static const UINT8 full_step_table[4] = { 0x03, 0x06, 0x0c, 0x09 };
+
+void pcw_state::pcw_update_interrupt_counter()
+{
+ /* never increments past 15! */
+ if (m_interrupt_counter==0x0f)
+ return;
+
+ /* increment count */
+ m_interrupt_counter++;
+}
+
+
+// set/reset INT and NMI lines
+void pcw_state::pcw_update_irqs()
+{
+ // set NMI line, remains set until FDC interrupt type is changed
+ if(m_nmi_flag != 0)
+ m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
+ else
+ m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
+
+ // set IRQ line, timer pulses IRQ line, all other devices hold it as necessary
+ if(m_fdc_interrupt_code == 1 && (m_system_status & 0x20))
+ {
+ m_maincpu->set_input_line(0, ASSERT_LINE);
+ return;
+ }
+
+ if(m_timer_irq_flag != 0)
+ {
+ m_maincpu->set_input_line(0, ASSERT_LINE);
+ return;
+ }
+
+ m_maincpu->set_input_line(0, CLEAR_LINE);
+}
+
+TIMER_CALLBACK_MEMBER(pcw_state::pcw_timer_pulse)
+{
+ m_timer_irq_flag = 0;
+ pcw_update_irqs();
+}
+
+/* callback for 1/300ths of a second interrupt */
+TIMER_DEVICE_CALLBACK_MEMBER(pcw_state::pcw_timer_interrupt)
+{
+ pcw_update_interrupt_counter();
+
+ m_timer_irq_flag = 1;
+ pcw_update_irqs();
+ machine().scheduler().timer_set(attotime::from_usec(100), timer_expired_delegate(FUNC(pcw_state::pcw_timer_pulse),this));
+}
+
+/* PCW uses UPD765 in NON-DMA mode. FDC Ints are connected to /INT or
+ * /NMI depending on choice (see system control below)
+ * fdc interrupt callback. set/clear fdc int */
+WRITE_LINE_MEMBER( pcw_state::pcw_fdc_interrupt )
+{
+ if (!state)
+ m_system_status &= ~(1<<5);
+ else
+ {
+ m_system_status |= (1<<5);
+ if(m_fdc_interrupt_code == 0) // NMI is held until interrupt type is changed
+ m_nmi_flag = 1;
+ }
+}
+
+
+/* Memory is banked in 16k blocks.
+
+ The upper 16 bytes of block 3, contains the keyboard
+ state. This is updated by the hardware.
+
+ block 3 could be paged into any bank, and this explains the
+ setup of the memory below.
+*/
+static ADDRESS_MAP_START(pcw_map, AS_PROGRAM, 8, pcw_state )
+ AM_RANGE(0x0000, 0x3fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank5")
+ AM_RANGE(0x4000, 0x7fff) AM_READ_BANK("bank2") AM_WRITE_BANK("bank6")
+ AM_RANGE(0x8000, 0xbfff) AM_READ_BANK("bank3") AM_WRITE_BANK("bank7")
+ AM_RANGE(0xc000, 0xffff) AM_READ_BANK("bank4") AM_WRITE_BANK("bank8")
+ADDRESS_MAP_END
+
+
+/* Keyboard is read by the MCU and sent as serial data to the gate array ASIC */
+READ8_MEMBER(pcw_state::pcw_keyboard_r)
+{
+ static const char *const keynames[] = {
+ "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7",
+ "LINE8", "LINE9", "LINE10", "LINE11", "LINE12", "LINE13", "LINE14", "LINE15"
+ };
+
+ return ioport(keynames[offset])->read();
+}
+
+READ8_MEMBER(pcw_state::pcw_keyboard_data_r)
+{
+ return m_mcu_keyboard_data[offset];
+}
+
+/* -----------------------------------------------------------------------
+ * PCW Banking
+ * ----------------------------------------------------------------------- */
+
+void pcw_state::pcw_update_read_memory_block(int block, int bank)
+{
+ address_space &space = m_maincpu->space(AS_PROGRAM);
+ char block_name[10];
+
+ sprintf(block_name,"bank%d",block+1);
+ /* bank 3? */
+ if (bank == 3)
+ {
+ /* when upper 16 bytes are accessed use keyboard read
+ handler */
+ space.install_read_handler(
+ block * 0x04000 + 0x3ff0, block * 0x04000 + 0x3fff, read8_delegate(FUNC(pcw_state::pcw_keyboard_data_r),this));
+// LOG(("MEM: read block %i -> bank %i\n",block,bank));
+ }
+ else
+ {
+ /* restore bank handler across entire block */
+ space.install_read_bank(block * 0x04000 + 0x0000, block * 0x04000 + 0x3fff,block_name);
+// LOG(("MEM: read block %i -> bank %i\n",block,bank));
+ }
+ membank(block_name)->set_base(m_ram->pointer() + ((bank * 0x4000) % m_ram->size()));
+}
+
+
+
+void pcw_state::pcw_update_write_memory_block(int block, int bank)
+{
+ char block_name[10];
+
+ sprintf(block_name,"bank%d",block+5);
+ membank(block_name)->set_base(m_ram->pointer() + ((bank * 0x4000) % m_ram->size()));
+// LOG(("MEM: write block %i -> bank %i\n",block,bank));
+}
+
+
+/* ----------------------------------------------------------------------- */
+
+/* &F4 O b7-b4: when set, force memory reads to access the same bank as
+writes for &C000, &0000, &8000, and &4000 respectively */
+
+void pcw_state::pcw_update_mem(int block, int data)
+{
+ /* expansion ram select.
+ if block is 0-7, selects internal ram instead for read/write
+ */
+ if (data & 0x080)
+ {
+ int bank;
+
+ /* same bank for reading and writing */
+ bank = data & 0x7f;
+
+ pcw_update_read_memory_block(block, bank);
+ pcw_update_write_memory_block(block, bank);
+ }
+ else
+ {
+ /* specify a different bank for reading and writing */
+ int write_bank;
+ int read_bank;
+ int mask=0;
+
+ switch (block)
+ {
+ case 0:
+ {
+ mask = (1<<6);
+ }
+ break;
+
+ case 1:
+ {
+ mask = (1<<4);
+ }
+ break;
+
+ case 2:
+ {
+ mask = (1<<5);
+ }
+ break;
+
+ case 3:
+ {
+ mask = (1<<7);
+ }
+ break;
+ }
+
+ if (m_bank_force & mask)
+ {
+ read_bank = data & 0x07;
+ }
+ else
+ {
+ read_bank = (data>>4) & 0x07;
+ }
+
+ pcw_update_read_memory_block(block, read_bank);
+
+ write_bank = data & 0x07;
+ pcw_update_write_memory_block(block, write_bank);
+ }
+
+ /* if boot is active, page in fake ROM */
+/* if ((m_boot) && (block==0))
+ {
+ unsigned char *FakeROM;
+
+ FakeROM = &memregion("maincpu")->base()[0x010000];
+
+ membank("bank1")->set_base(FakeROM);
+ }*/
+}
+
+/* from Jacob Nevins docs */
+int pcw_state::pcw_get_sys_status()
+{
+ return
+ m_interrupt_counter
+ | (m_screen->vblank() ? 0x40 : 0x00)
+ | (ioport("EXTRA")->read() & 0x010)
+ | (m_system_status & 0x20);
+}
+
+READ8_MEMBER(pcw_state::pcw_interrupt_counter_r)
+{
+ int data;
+
+ /* from Jacob Nevins docs */
+
+ /* get data */
+ data = pcw_get_sys_status();
+ /* clear int counter */
+ m_interrupt_counter = 0;
+ /* check interrupts */
+ pcw_update_irqs();
+ /* return data */
+ //LOG(("SYS: IRQ counter read, returning %02x\n",data));
+ return data;
+}
+
+
+WRITE8_MEMBER(pcw_state::pcw_bank_select_w)
+{
+ //LOG(("BANK: %2x %x\n",offset, data));
+ m_banks[offset] = data;
+
+ pcw_update_mem(offset, data);
+// popmessage("RAM Banks: %02x %02x %02x %02x Lock:%02x",m_banks[0],m_banks[1],m_banks[2],m_banks[3],m_bank_force);
+}
+
+WRITE8_MEMBER(pcw_state::pcw_bank_force_selection_w)
+{
+ m_bank_force = data;
+
+ pcw_update_mem(0, m_banks[0]);
+ pcw_update_mem(1, m_banks[1]);
+ pcw_update_mem(2, m_banks[2]);
+ pcw_update_mem(3, m_banks[3]);
+}
+
+
+WRITE8_MEMBER(pcw_state::pcw_roller_ram_addr_w)
+{
+ /*
+ Address of roller RAM. b7-5: bank (0-7). b4-1: address / 512. */
+
+ m_roller_ram_addr = (((data>>5) & 0x07)<<14) |
+ ((data & 0x01f)<<9);
+ LOG(("Roller-RAM: Address set to 0x%05x\n",m_roller_ram_addr));
+}
+
+WRITE8_MEMBER(pcw_state::pcw_pointer_table_top_scan_w)
+{
+ m_roller_ram_offset = data;
+ LOG(("Roller-RAM: offset set to 0x%05x\n",m_roller_ram_offset));
+}
+
+WRITE8_MEMBER(pcw_state::pcw_vdu_video_control_register_w)
+{
+ m_vdu_video_control_register = data;
+ LOG(("Roller-RAM: control reg set to 0x%02x\n",data));
+}
+
+WRITE8_MEMBER(pcw_state::pcw_system_control_w)
+{
+ upd765a_device *fdc = machine().device<upd765a_device>("upd765");
+ LOG(("SYSTEM CONTROL: %d\n",data));
+
+ switch (data)
+ {
+ /* end bootstrap */
+ case 0:
+ {
+ m_boot = 0;
+ pcw_update_mem(0, m_banks[0]);
+ }
+ break;
+
+ /* reboot */
+ case 1:
+ {
+ m_maincpu->set_input_line(INPUT_LINE_RESET, PULSE_LINE);
+ popmessage("SYS: Reboot");
+ }
+ break;
+
+ /* connect fdc interrupt to nmi */
+ case 2:
+ {
+ int fdc_previous_interrupt_code = m_fdc_interrupt_code;
+
+ m_fdc_interrupt_code = 0;
+
+ /* previously connected to INT? */
+ if (fdc_previous_interrupt_code == 1)
+ {
+ /* yes */
+
+ pcw_update_irqs();
+ }
+
+ }
+ break;
+
+
+ /* connect fdc interrupt to interrupt */
+ case 3:
+ {
+ int fdc_previous_interrupt_code = m_fdc_interrupt_code;
+
+ /* connect to INT */
+ m_fdc_interrupt_code = 1;
+
+ /* previously connected to NMI? */
+ if (fdc_previous_interrupt_code == 0)
+ {
+ /* yes */
+
+ /* clear nmi interrupt */
+ m_nmi_flag = 0;
+ }
+
+ /* re-issue interrupt */
+ pcw_update_irqs();
+ }
+ break;
+
+
+ /* connect fdc interrupt to neither */
+ case 4:
+ {
+ int fdc_previous_interrupt_code = m_fdc_interrupt_code;
+
+ m_fdc_interrupt_code = 2;
+
+ /* previously connected to NMI or INT? */
+ if ((fdc_previous_interrupt_code == 0) || (fdc_previous_interrupt_code == 1))
+ {
+ /* yes */
+
+ /* Clear NMI */
+ m_nmi_flag = 0;
+ }
+ pcw_update_irqs();
+
+ }
+ break;
+
+ /* set fdc terminal count */
+ case 5:
+ {
+ fdc->tc_w(true);
+ }
+ break;
+
+ /* clear fdc terminal count */
+ case 6:
+ {
+ fdc->tc_w(false);
+ }
+ break;
+
+ /* screen on */
+ case 7:
+ {
+ }
+ break;
+
+ /* screen off */
+ case 8:
+ {
+ }
+ break;
+
+ /* disc motor on */
+ case 9:
+ {
+ floppy_image_device *floppy;
+ floppy = machine().device<floppy_connector>(":upd765:0")->get_device();
+ if(floppy)
+ floppy->mon_w(0);
+ floppy = machine().device<floppy_connector>(":upd765:1")->get_device();
+ if(floppy)
+ floppy->mon_w(0);
+ }
+ break;
+
+ /* disc motor off */
+ case 10:
+ {
+ floppy_image_device *floppy;
+ floppy = machine().device<floppy_connector>(":upd765:0")->get_device();
+ if(floppy)
+ floppy->mon_w(1);
+ floppy = machine().device<floppy_connector>(":upd765:1")->get_device();
+ if(floppy)
+ floppy->mon_w(1);
+ }
+ break;
+
+ /* beep on */
+ case 11:
+ {
+ m_beeper->set_state(1);
+ }
+ break;
+
+ /* beep off */
+ case 12:
+ {
+ m_beeper->set_state(0);
+ }
+ break;
+
+ }
+}
+
+READ8_MEMBER(pcw_state::pcw_system_status_r)
+{
+ /* from Jacob Nevins docs */
+ UINT8 ret = pcw_get_sys_status();
+
+ return ret;
+}
+
+/* read from expansion hardware - additional hardware not part of
+the PCW custom ASIC */
+READ8_MEMBER(pcw_state::pcw_expansion_r)
+{
+ logerror("pcw expansion r: %04x\n",offset+0x080);
+
+ switch (offset+0x080)
+ {
+ case 0x0e0:
+ {
+ /* spectravideo joystick */
+ if (ioport("EXTRA")->read() & 0x020)
+ {
+ return ioport("SPECTRAVIDEO")->read();
+ }
+ else
+ {
+ return 0x0ff;
+ }
+ }
+
+ case 0x09f:
+ {
+ /* kempston joystick */
+ return ioport("KEMPSTON")->read();
+ }
+
+ case 0x0e1:
+ case 0x0e3:
+ {
+ return 0x7f;
+ }
+
+ case 0x085:
+ {
+ return 0x0fe;
+ }
+
+ case 0x087:
+ {
+ return 0x0ff;
+ }
+
+ }
+
+ /* result from floating bus/no peripherial at this port */
+ return 0x0ff;
+}
+
+/* write to expansion hardware - additional hardware not part of
+the PCW custom ASIC */
+WRITE8_MEMBER(pcw_state::pcw_expansion_w)
+{
+ logerror("pcw expansion w: %04x %02x\n",offset+0x080, data);
+}
+
+void pcw_state::pcw_printer_fire_pins(UINT16 pins)
+{
+ int x,line;
+ INT32 feed = (m_paper_feed / 2);
+
+ for(x=feed+PCW_PRINTER_HEIGHT-16;x<feed+PCW_PRINTER_HEIGHT-7;x++)
+ {
+ line = x % PCW_PRINTER_HEIGHT;
+ if((pins & 0x01) == 0)
+ m_prn_output->pix16(line, m_printer_headpos) = (UINT16)(pins & 0x01);
+ pins >>= 1;
+ }
+// if(m_printer_headpos < PCW_PRINTER_WIDTH)
+// m_printer_headpos++;
+}
+
+WRITE8_MEMBER(pcw_state::pcw_printer_data_w)
+{
+ m_printer_data = data;
+ machine().device<upi41_cpu_device>("printer_mcu")->upi41_master_w(space,0,data);
+ logerror("PRN [0xFC]: Sent command %02x\n",data);
+}
+
+WRITE8_MEMBER(pcw_state::pcw_printer_command_w)
+{
+ m_printer_command = data;
+ machine().device<upi41_cpu_device>("printer_mcu")->upi41_master_w(space,1,data);
+ logerror("PRN [0xFD]: Sent command %02x\n",data);
+}
+
+// print error type
+// should return 0xF8 if there are no errors
+// 0 = underrun
+// 1 = printer controller RAM fault
+// 3 = bad command
+// 5 = print error
+// anything else = no printer
+READ8_MEMBER(pcw_state::pcw_printer_data_r)
+{
+ return machine().device<upi41_cpu_device>("printer_mcu")->upi41_master_r(space,0);
+}
+
+// printer status
+// bit 7 - bail bar in
+// bit 6 - not currently executing a command
+// bit 5 - printer RAM is full
+// bit 4 - print head is not at left margin
+// bit 3 - sheet feeder is present
+// bit 2 - paper is present
+// bit 1 - busy
+// bit 0 - controller fault
+READ8_MEMBER(pcw_state::pcw_printer_status_r)
+{
+ return machine().device<upi41_cpu_device>("printer_mcu")->upi41_master_r(space,1);
+}
+
+/* MCU handlers */
+/* I/O ports: (likely to be completely wrong...)
+ * (write)
+ * all are active low
+ * P1: pins 0-7
+ * P2 bit 0: pin 8
+ * P2 bit 1: serial shift/store clock
+ * P2 bit 2: serial shift store data
+ * P2 bit 3: serial shift/store strobe
+ * P2 bit 4: print head motor
+ * P2 bit 5: paper feed motor
+ * P2 bit 6: fire pins
+ * (read)
+ * P2 bit 7: bail bar status (0 if out)
+ * T0: Paper sensor (?)
+ * T1: Print head location (1 if not at left margin)
+ */
+TIMER_CALLBACK_MEMBER(pcw_state::pcw_stepper_callback)
+{
+ //popmessage("PRN: P2 bits %s %s %s\nSerial: %02x\nHeadpos: %i",m_printer_p2 & 0x40 ? " " : "6",m_printer_p2 & 0x20 ? " " : "5",m_printer_p2 & 0x10 ? " " : "4",m_printer_shift_output,m_printer_headpos);
+ if((m_printer_p2 & 0x10) == 0) // print head motor active
+ {
+ UINT8 stepper_state = (m_printer_shift_output >> 4) & 0x0f;
+ if(stepper_state == full_step_table[(m_head_motor_state + 1) & 0x03])
+ {
+ m_printer_headpos += 2;
+ m_head_motor_state++;
+ logerror("Printer head moved forward by 2 to %i\n",m_printer_headpos);
+ }
+ if(stepper_state == half_step_table[(m_head_motor_state + 1) & 0x03])
+ {
+ m_printer_headpos += 1;
+ m_head_motor_state++;
+ logerror("Printer head moved forward by 1 to %i\n",m_printer_headpos);
+ }
+ if(stepper_state == full_step_table[(m_head_motor_state - 1) & 0x03])
+ {
+ m_printer_headpos -= 2;
+ m_head_motor_state--;
+ logerror("Printer head moved back by 2 to %i\n",m_printer_headpos);
+ }
+ if(stepper_state == half_step_table[(m_head_motor_state - 1) & 0x03])
+ {
+ m_printer_headpos -= 1;
+ m_head_motor_state--;
+ logerror("Printer head moved back by 1 to %i\n",m_printer_headpos);
+ }
+ if(m_printer_headpos < 0)
+ m_printer_headpos = 0;
+ if(m_printer_headpos > PCW_PRINTER_WIDTH)
+ m_printer_headpos = PCW_PRINTER_WIDTH;
+ m_head_motor_state &= 0x03;
+ m_printer_p2 |= 0x10;
+ }
+ if((m_printer_p2 & 0x20) == 0) // line feed motor active
+ {
+ UINT8 stepper_state = m_printer_shift_output & 0x0f;
+ if(stepper_state == full_step_table[(m_linefeed_motor_state + 1) & 0x03])
+ {
+ m_paper_feed++;
+ if(m_paper_feed > PCW_PRINTER_HEIGHT*2)
+ m_paper_feed = 0;
+ m_linefeed_motor_state++;
+ }
+ if(stepper_state == half_step_table[(m_linefeed_motor_state + 1) & 0x03])
+ {
+ m_paper_feed++;
+ if(m_paper_feed > PCW_PRINTER_HEIGHT*2)
+ m_paper_feed = 0;
+ m_linefeed_motor_state++;
+ }
+ m_linefeed_motor_state &= 0x03;
+ m_printer_p2 |= 0x20;
+ }
+}
+
+TIMER_CALLBACK_MEMBER(pcw_state::pcw_pins_callback)
+{
+ pcw_printer_fire_pins(m_printer_pins);
+ m_printer_p2 |= 0x40;
+}
+
+READ8_MEMBER(pcw_state::mcu_printer_p1_r)
+{
+// logerror("PRN: MCU reading data from P1\n");
+ return m_printer_pins & 0x00ff;
+}
+
+WRITE8_MEMBER(pcw_state::mcu_printer_p1_w)
+{
+ m_printer_pins = (m_printer_pins & 0x0100) | data;
+ //popmessage("PRN: Print head position = %i",m_printer_headpos);
+ logerror("PRN: MCU writing %02x to P1 [%03x/%03x]\n",data,m_printer_pins,~m_printer_pins & 0x1ff);
+}
+
+READ8_MEMBER(pcw_state::mcu_printer_p2_r)
+{
+ UINT8 ret = 0x00;
+// logerror("PRN: MCU reading data from P2\n");
+ ret |= 0x80; // make sure bail bar is in
+ ret |= (m_printer_p2 & 0x70);
+ ret |= (m_printer_pins & 0x100) ? 0x01 : 0x00; // ninth pin
+ ret |= 0x0e;
+ return ret;
+}
+
+WRITE8_MEMBER(pcw_state::mcu_printer_p2_w)
+{
+ //logerror("PRN: MCU writing %02x to P2\n",data);
+ m_printer_p2 = data & 0x70;
+
+ // handle shift/store
+ m_printer_serial = data & 0x04; // data
+ if((data & 0x02) != 0) // clock
+ {
+ m_printer_shift <<= 1;
+ if(m_printer_serial == 0)
+ m_printer_shift &= ~0x01;
+ else
+ m_printer_shift |= 0x01;
+ }
+ if((data & 0x08) != 0) // strobe
+ {
+ logerror("Strobe active [%02x]\n",m_printer_shift);
+ m_printer_shift_output = m_printer_shift;
+ m_prn_stepper->adjust(PERIOD_OF_555_MONOSTABLE(22000,0.00000001));
+ }
+
+ if(data & 0x40)
+ m_prn_pins->adjust(PERIOD_OF_555_MONOSTABLE(22000,0.0000000068));
+
+ if(data & 0x01)
+ m_printer_pins |= 0x0100;
+ else
+ m_printer_pins &= ~0x0100;
+ m_printer_p2_prev = data;
+}
+
+// Paper sensor
+READ8_MEMBER(pcw_state::mcu_printer_t1_r)
+{
+ return 1;
+}
+
+// Print head location (0 if at left margin, otherwise 1)
+READ8_MEMBER(pcw_state::mcu_printer_t0_r)
+{
+ if(m_printer_headpos == 0)
+ return 0;
+ else
+ return 1;
+}
+
+/*
+ * Keyboard MCU (i8048)
+ * P1 = keyboard scan row select (low 8 bits)
+ * P2 = bits 7-4: keyboard scan row select (high 4 bits)
+ * bit 1: keyboard serial clock
+ * bit 0: keyboard serial data
+ */
+void pcw_state::mcu_transmit_serial(UINT8 bit)
+{
+ int seq;
+
+ /* Keyboard data is sent in serial from the MCU through the keyboard port, to the ASIC
+ Sends a string of 12-bit sequences, first 4 bits are the RAM location (from &3ff0),
+ then 8 bits for the data to be written there. */
+ seq = m_mcu_transmit_count % 12;
+ if(seq < 4)
+ {
+ if(bit == 0)
+ m_mcu_selected &= ~(8 >> seq);
+ else
+ m_mcu_selected |= (8 >> seq);
+ }
+ else
+ {
+ seq -= 4;
+ if(bit == 0)
+ m_mcu_buffer &= ~(128 >> seq);
+ else
+ m_mcu_buffer |= (128 >> seq);
+ }
+ m_mcu_transmit_count++;
+ if(m_mcu_transmit_count >= 12)
+ {
+ m_mcu_keyboard_data[m_mcu_selected] = m_mcu_buffer;
+ m_mcu_transmit_count = 0;
+ }
+}
+
+READ8_MEMBER(pcw_state::mcu_kb_scan_r)
+{
+ return m_kb_scan_row & 0xff;
+}
+
+WRITE8_MEMBER(pcw_state::mcu_kb_scan_w)
+{
+ m_kb_scan_row = (m_kb_scan_row & 0xff00) | data;
+}
+
+READ8_MEMBER(pcw_state::mcu_kb_scan_high_r)
+{
+ return (m_kb_scan_row & 0xff00) >> 8;
+}
+
+WRITE8_MEMBER(pcw_state::mcu_kb_scan_high_w)
+{
+ if((m_mcu_prev & 0x02) && !(data & 0x02)) // bit is transmitted on high-to-low clock transition
+ {
+ mcu_transmit_serial(data & 0x01);
+ m_mcu_transmit_reset_seq = 0;
+ }
+
+ if((m_mcu_prev & 0x01) != (data & 0x01)) // two high->low transitions on the data pin signals the beginning of a new transfer
+ {
+ m_mcu_transmit_reset_seq++;
+ if(m_mcu_transmit_reset_seq > 3)
+ m_mcu_transmit_count = 0;
+ }
+
+ m_kb_scan_row = (m_kb_scan_row & 0x00ff) | ((data & 0xff) << 8);
+ m_mcu_prev = data;
+}
+
+READ8_MEMBER(pcw_state::mcu_kb_data_r)
+{
+ UINT16 scan_bits = ((m_kb_scan_row & 0xf000) >> 4) | (m_kb_scan_row & 0xff);
+ int x;
+
+ for(x=0;x<12;x++)
+ {
+ if(!(scan_bits & 1))
+ return pcw_keyboard_r(space,x);
+ else
+ scan_bits >>= 1;
+ }
+ return 0xff;
+}
+
+READ8_MEMBER(pcw_state::mcu_kb_t1_r)
+{
+ return 1;
+}
+
+READ8_MEMBER(pcw_state::mcu_kb_t0_r)
+{
+ return 0;
+}
+
+/* TODO: Implement parallel port! */
+READ8_MEMBER(pcw_state::pcw9512_parallel_r)
+{
+ if (offset==1)
+ {
+ return 0xff^0x020;
+ }
+
+ logerror("pcw9512 parallel r: offs: %04x\n", (int) offset);
+ return 0x00;
+}
+
+/* TODO: Implement parallel port! */
+WRITE8_MEMBER(pcw_state::pcw9512_parallel_w)
+{
+ logerror("pcw9512 parallel w: offs: %04x data: %02x\n",offset,data);
+}
+
+static ADDRESS_MAP_START(pcw_io, AS_IO, 8, pcw_state )
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x000, 0x001) AM_MIRROR(0x7e) AM_DEVICE("upd765", upd765a_device, map)
+ AM_RANGE(0x080, 0x0ef) AM_READWRITE(pcw_expansion_r, pcw_expansion_w)
+ AM_RANGE(0x0f0, 0x0f3) AM_WRITE( pcw_bank_select_w)
+ AM_RANGE(0x0f4, 0x0f4) AM_READWRITE(pcw_interrupt_counter_r, pcw_bank_force_selection_w)
+ AM_RANGE(0x0f5, 0x0f5) AM_WRITE( pcw_roller_ram_addr_w)
+ AM_RANGE(0x0f6, 0x0f6) AM_WRITE( pcw_pointer_table_top_scan_w)
+ AM_RANGE(0x0f7, 0x0f7) AM_WRITE( pcw_vdu_video_control_register_w)
+ AM_RANGE(0x0f8, 0x0f8) AM_READWRITE(pcw_system_status_r, pcw_system_control_w)
+ AM_RANGE(0x0fc, 0x0fc) AM_READWRITE(pcw_printer_data_r, pcw_printer_data_w)
+ AM_RANGE(0x0fd, 0x0fd) AM_READWRITE(pcw_printer_status_r, pcw_printer_command_w)
+ADDRESS_MAP_END
+
+
+
+static ADDRESS_MAP_START(pcw9512_io, AS_IO, 8, pcw_state )
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x000, 0x001) AM_MIRROR(0x7e) AM_DEVICE("upd765", upd765a_device, map)
+ AM_RANGE(0x080, 0x0ef) AM_READWRITE(pcw_expansion_r, pcw_expansion_w)
+ AM_RANGE(0x0f0, 0x0f3) AM_WRITE( pcw_bank_select_w)
+ AM_RANGE(0x0f4, 0x0f4) AM_READWRITE(pcw_interrupt_counter_r, pcw_bank_force_selection_w)
+ AM_RANGE(0x0f5, 0x0f5) AM_WRITE( pcw_roller_ram_addr_w)
+ AM_RANGE(0x0f6, 0x0f6) AM_WRITE( pcw_pointer_table_top_scan_w)
+ AM_RANGE(0x0f7, 0x0f7) AM_WRITE( pcw_vdu_video_control_register_w)
+ AM_RANGE(0x0f8, 0x0f8) AM_READWRITE(pcw_system_status_r, pcw_system_control_w)
+ AM_RANGE(0x0fc, 0x0fd) AM_READWRITE(pcw9512_parallel_r, pcw9512_parallel_w)
+ADDRESS_MAP_END
+
+/* i8041 MCU */
+static ADDRESS_MAP_START(pcw_printer_io, AS_IO, 8, pcw_state )
+ AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_READWRITE(mcu_printer_p2_r,mcu_printer_p2_w)
+ AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(mcu_printer_p1_r, mcu_printer_p1_w)
+ AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1) AM_READ(mcu_printer_t1_r)
+ AM_RANGE(MCS48_PORT_T0, MCS48_PORT_T0) AM_READ(mcu_printer_t0_r)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(pcw_keyboard_io, AS_IO, 8, pcw_state )
+ AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(mcu_kb_scan_r,mcu_kb_scan_w)
+ AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_READWRITE(mcu_kb_scan_high_r,mcu_kb_scan_high_w)
+ AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1) AM_READ(mcu_kb_t1_r)
+ AM_RANGE(MCS48_PORT_T0, MCS48_PORT_T0) AM_READ(mcu_kb_t0_r)
+ AM_RANGE(MCS48_PORT_BUS, MCS48_PORT_BUS) AM_READ(mcu_kb_data_r)
+ADDRESS_MAP_END
+
+
+TIMER_CALLBACK_MEMBER(pcw_state::setup_beep)
+{
+ m_beeper->set_state(0);
+ m_beeper->set_frequency(3750);
+}
+
+
+void pcw_state::machine_start()
+{
+ m_fdc_interrupt_code = 2;
+}
+
+void pcw_state::machine_reset()
+{
+ UINT8* code = memregion("printer_mcu")->base();
+ int x;
+ /* ram paging is actually undefined at power-on */
+
+ m_bank_force = 0xf0; // banks are locked for CPC-style paging - Batman expects this
+
+ m_banks[0] = 0x80;
+ m_banks[1] = 0x81;
+ m_banks[2] = 0x82;
+ m_banks[3] = 0x83;
+
+ pcw_update_mem(0, m_banks[0]);
+ pcw_update_mem(1, m_banks[1]);
+ pcw_update_mem(2, m_banks[2]);
+ pcw_update_mem(3, m_banks[3]);
+
+ m_boot = 0; // System starts up in bootstrap mode, disabled until it's possible to emulate it.
+
+ /* copy boot code into RAM - yes, it's skipping a step */
+ memset(m_ram->pointer(),0x00,m_ram->size());
+ for(x=0;x<256;x++)
+ m_ram->pointer()[x+2] = code[x+0x300];
+
+ /* and hack our way past the MCU side of the boot process */
+ code[0x01] = 0x40;
+
+ m_printer_status = 0xff;
+ m_printer_command = 0xff;
+ m_printer_data = 0x00;
+ m_printer_headpos = 0x00; // bring printer head to left margin
+ m_printer_shift = 0;
+ m_printer_shift_output = 0;
+}
+
+DRIVER_INIT_MEMBER(pcw_state,pcw)
+{
+ m_maincpu->set_input_line_vector(0, 0x0ff);
+
+ /* lower 4 bits are interrupt counter */
+ m_system_status = 0x000;
+ m_system_status &= ~((1<<6) | (1<<5) | (1<<4));
+
+ m_interrupt_counter = 0;
+
+ m_roller_ram_offset = 0;
+
+ /* timer interrupt */
+ machine().scheduler().timer_set(attotime::zero, timer_expired_delegate(FUNC(pcw_state::setup_beep),this));
+
+ m_prn_stepper = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pcw_state::pcw_stepper_callback),this));
+ m_prn_pins = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pcw_state::pcw_pins_callback),this));
+}
+
+
+/*
+b7: k2 k1 [+] . , space V X Z del< alt
+b6: k3 k5 1/2 / M N B C lock k.
+b5: k6 k4 shift ; K J F D A enter
+b4: k9 k8 k7 ?? L H G S tab f8
+b3: paste copy # P I Y T W Q [-]
+b2: f2 cut return [ O U R E stop can
+b1: k0 ptr ] - 9 7 5 3 2 extra
+b0: f4 exit del> = 0 8 6 4 1 f6
+ &3FF0 &3FF1 &3FF2 &3FF3 &3FF4 &3FF5 &3FF6 &3FF7 &3FF8 &3FF9 &3FFA
+
+2008-05 FP:
+Small note about atural keyboard: currently,
+- "Paste" is mapped to 'F9'
+- "Exit" is mapped to 'F10'
+- "Ptr" is mapped to 'Print Screen'
+- "Cut" is mapped to 'F11'
+- "Copy" is mapped to 'F12'
+- "Stop" is mapped to 'Esc'
+- [+] is mapped to 'Page Up'
+- [-] is mapped to 'Page Down'
+- "Extra" is mapped to 'Home'
+- "Can" is mapped to 'Insert'
+*/
+
+static INPUT_PORTS_START(pcw)
+ /* keyboard "ports". These are poked automatically into the PCW address space */
+
+ PORT_START("LINE0") /* 0x03ff0 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F3 F4") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_CHAR(UCHAR_MAMEKEY(F4))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F1 F2") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_CHAR(UCHAR_MAMEKEY(F2))
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Paste") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(F9))
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
+
+ PORT_START("LINE1") /* 0x03ff1 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Exit") PORT_CODE(KEYCODE_PGDN) PORT_CHAR(UCHAR_MAMEKEY(F10))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ptr") PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(PRTSCR))
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Cut") PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR(UCHAR_MAMEKEY(F11))
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Copy") PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(UCHAR_MAMEKEY(F12))
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+
+ PORT_START("LINE2") /* 0x03ff2 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DEL>") PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('#') PORT_CHAR('>')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x40, 0xff, IPT_UNUSED)
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[+]") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(PGUP)) // 1st key on the left from 'Spacebar'
+
+ PORT_START("LINE3") /* 0x03ff3 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\xA7') PORT_CHAR('<')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
+
+ PORT_START("LINE4") /* 0x03ff4 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
+
+ PORT_START("LINE5") /* 0x03ff5 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') 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_U) PORT_CHAR('u') PORT_CHAR('U')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
+ 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_SPACE) PORT_CHAR(' ')
+
+ PORT_START("LINE6") /* 0x03ff6 */
+ 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_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
+
+ PORT_START("LINE7") /* 0x03ff7 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('\xA3')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
+ 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_C) PORT_CHAR('c') PORT_CHAR('C')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
+
+ PORT_START("LINE8") /* 0x03ff8 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Stop") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
+ 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_TAB) PORT_CHAR('\t')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
+
+ PORT_START("LINE9") /* 0x03ff9 */
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5 F6") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_CHAR(UCHAR_MAMEKEY(F6))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Extra") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(HOME))
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Can") PORT_CODE(KEYCODE_PGUP) PORT_CHAR(UCHAR_MAMEKEY(INSERT))
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[-]") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(PGDN)) // 1st key on the right from 'Spacebar'
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F7 F8") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) PORT_CHAR(UCHAR_MAMEKEY(F8))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DEL<") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+
+ PORT_START("LINE10") /* 0x03ffa */
+ PORT_BIT(0x07f,0x7f, IPT_UNUSED)
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Alt") PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(LALT)) PORT_CHAR(UCHAR_MAMEKEY(RALT))
+
+ /* at this point the following reflect the above key combinations but in a incomplete
+ way. No details available at this time */
+ PORT_START("LINE11") /* 0x03ffb */
+ PORT_BIT(0xff, 0xff, IPT_UNUSED)
+
+ PORT_START("LINE12") /* 0x03ffc */
+ PORT_BIT(0xff, 0xff, IPT_UNUSED)
+
+ /* 2008-05 FP: not sure if this key is correct, "Caps Lock" is already mapped above.
+ For now, I let it with no default mapping. */
+ PORT_START("LINE13") /* 0x03ffd */
+ PORT_BIT(0xff, 0xff, IPT_UNUSED)
+// PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT LOCK") //PORT_CODE(KEYCODE_CAPSLOCK)
+// PORT_BIT(0x80, 0xff, IPT_UNUSED)
+
+ PORT_START("LINE14") /* 0x03ffe */
+ PORT_BIT ( 0xff, 0xff, IPT_UNUSED )
+
+ PORT_START("LINE15") /* 0x03fff */
+ PORT_BIT ( 0xff, 0xff, IPT_UNUSED )
+
+ /* from here on are the pretend dipswitches for machine config etc */
+ PORT_START("EXTRA")
+ /* frame rate option */
+ PORT_DIPNAME( 0x10, 0x010, "50/60Hz Frame Rate Option")
+ PORT_DIPSETTING( 0x00, "60Hz")
+ PORT_DIPSETTING( 0x10, "50Hz" )
+ /* spectravideo joystick enabled */
+ PORT_DIPNAME( 0x20, 0x020, "Spectravideo Joystick Enabled")
+ PORT_DIPSETTING( 0x00, DEF_STR(No))
+ PORT_DIPSETTING( 0x20, DEF_STR(Yes) )
+
+ /* Spectravideo joystick */
+ /* bit 7: 0
+ 6: 1
+ 5: 1
+ 4: 1 if in E position
+ 3: 1 if N
+ 2: 1 if W
+ 1: 1 if fire pressed
+ 0: 1 if S
+ */
+
+ PORT_START("SPECTRAVIDEO")
+ PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN)
+ PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_BUTTON1)
+ PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT)
+ PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP)
+ PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT)
+ PORT_BIT(0x020, 0x020, IPT_UNUSED)
+ PORT_BIT(0x040, 0x040, IPT_UNUSED)
+ PORT_BIT(0x080, 0x00, IPT_UNUSED)
+
+ /* Kempston joystick */
+ PORT_START("KEMPSTON")
+ PORT_BIT( 0xff, 0x00, IPT_UNUSED)
+INPUT_PORTS_END
+
+static SLOT_INTERFACE_START( pcw_floppies )
+ SLOT_INTERFACE( "3dsdd", FLOPPY_3_DSDD )
+SLOT_INTERFACE_END
+
+/* PCW8256, PCW8512, PCW9256 */
+static MACHINE_CONFIG_START( pcw, pcw_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, 4000000) /* clock supplied to chip, but in reality it is 3.4 MHz */
+ MCFG_CPU_PROGRAM_MAP(pcw_map)
+ MCFG_CPU_IO_MAP(pcw_io)
+
+ MCFG_CPU_ADD("printer_mcu", I8041, 11000000) // 11MHz
+ MCFG_CPU_IO_MAP(pcw_printer_io)
+
+ MCFG_CPU_ADD("keyboard_mcu", I8048, 5000000) // 5MHz
+ MCFG_CPU_IO_MAP(pcw_keyboard_io)
+
+// MCFG_QUANTUM_TIME(attotime::from_hz(50))
+ MCFG_QUANTUM_PERFECT_CPU("maincpu")
+
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(PCW_SCREEN_WIDTH, PCW_SCREEN_HEIGHT)
+ MCFG_SCREEN_VISIBLE_AREA(0, PCW_SCREEN_WIDTH-1, 0, PCW_SCREEN_HEIGHT-1)
+ MCFG_SCREEN_UPDATE_DRIVER(pcw_state, screen_update_pcw)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", PCW_NUM_COLOURS)
+ MCFG_PALETTE_INIT_OWNER(pcw_state, pcw)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD("beeper", BEEP, 0)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+
+ MCFG_UPD765A_ADD("upd765", true, true)
+ MCFG_UPD765_INTRQ_CALLBACK(WRITELINE(pcw_state, pcw_fdc_interrupt))
+
+ MCFG_FLOPPY_DRIVE_ADD("upd765:0", pcw_floppies, "3dsdd", floppy_image_device::default_floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD("upd765:1", pcw_floppies, "3dsdd", floppy_image_device::default_floppy_formats)
+
+ MCFG_SOFTWARE_LIST_ADD("disk_list","pcw")
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("256K")
+
+ MCFG_TIMER_DRIVER_ADD_PERIODIC("pcw_timer", pcw_state, pcw_timer_interrupt, attotime::from_hz(300))
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( pcw8256, pcw )
+ MCFG_SCREEN_ADD("printer",RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_SIZE( PCW_PRINTER_WIDTH, PCW_PRINTER_HEIGHT )
+ MCFG_SCREEN_VISIBLE_AREA(0, PCW_PRINTER_WIDTH-1, 0, PCW_PRINTER_HEIGHT-1)
+ MCFG_SCREEN_UPDATE_DRIVER(pcw_state, screen_update_pcw_printer)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_DEFAULT_LAYOUT( layout_pcw )
+
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_DERIVED( pcw8512, pcw )
+ MCFG_SCREEN_ADD("printer",RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_SIZE( PCW_PRINTER_WIDTH, PCW_PRINTER_HEIGHT )
+ MCFG_SCREEN_VISIBLE_AREA(0, PCW_PRINTER_WIDTH-1, 0, PCW_PRINTER_HEIGHT-1)
+ MCFG_SCREEN_UPDATE_DRIVER(pcw_state, screen_update_pcw_printer)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_DEFAULT_LAYOUT( layout_pcw )
+
+ /* internal ram */
+ MCFG_RAM_MODIFY(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("512K")
+MACHINE_CONFIG_END
+
+/* PCW9512, PCW9512+, PCW10 */
+static MACHINE_CONFIG_DERIVED( pcw9512, pcw )
+ MCFG_CPU_MODIFY( "maincpu" )
+ MCFG_CPU_IO_MAP(pcw9512_io)
+
+ /* internal ram */
+ MCFG_RAM_MODIFY(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("512K")
+MACHINE_CONFIG_END
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START(pcw8256)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_FILL(0x0000,0x10000,0x00) \
+ ROM_REGION(0x400,"printer_mcu",0) // i8041 9-pin dot-matrix
+ ROM_LOAD("40026.ic701", 0, 0x400, CRC(ee8890ae) SHA1(91679cc5e07464ac55ef9a10f7095b2438223332))
+ ROM_REGION(0x400,"keyboard_mcu",0) // i8048
+ ROM_LOAD("40027.ic801", 0, 0x400, CRC(25260958) SHA1(210e7e25228c79d2920679f217d68e4f14055825))
+ROM_END
+
+ROM_START(pcw8512)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_FILL(0x0000,0x10000,0x00) \
+ ROM_REGION(0x400,"printer_mcu",0) // i8041 9-pin dot-matrix
+ ROM_LOAD("40026.ic701", 0, 0x400, CRC(ee8890ae) SHA1(91679cc5e07464ac55ef9a10f7095b2438223332))
+ ROM_REGION(0x400,"keyboard_mcu",0) // i8048
+ ROM_LOAD("40027.ic801", 0, 0x400, CRC(25260958) SHA1(210e7e25228c79d2920679f217d68e4f14055825))
+ROM_END
+
+ROM_START(pcw9256)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_FILL(0x0000,0x10000,0x00) \
+ ROM_REGION(0x2000,"printer_mcu",0) // i8041 9-pin dot-matrix
+ ROM_LOAD("40026.ic701", 0, 0x400, CRC(ee8890ae) SHA1(91679cc5e07464ac55ef9a10f7095b2438223332))
+ ROM_REGION(0x400,"keyboard_mcu",0) // i8048
+ ROM_LOAD("40027.ic801", 0, 0x400, CRC(25260958) SHA1(210e7e25228c79d2920679f217d68e4f14055825))
+ROM_END
+
+ROM_START(pcw9512)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_FILL(0x0000,0x10000,0x00) \
+ ROM_REGION(0x2000,"printer_mcu",0) // i8041 daisywheel (schematics say i8039?)
+ ROM_LOAD("40103.ic109", 0, 0x2000, CRC(a64d450a) SHA1(ebbf0ef19d39912c1c127c748514dd299915f88b))
+ ROM_REGION(0x400,"keyboard_mcu",0) // i8048
+ ROM_LOAD("40027.ic801", 0, 0x400, CRC(25260958) SHA1(210e7e25228c79d2920679f217d68e4f14055825))
+ROM_END
+
+ROM_START(pcw10)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_FILL(0x0000,0x10000,0x00) \
+ ROM_REGION(0x2000,"printer_mcu",0) // i8041 9-pin dot matrix
+ ROM_LOAD("40026.ic701", 0, 0x400, CRC(ee8890ae) SHA1(91679cc5e07464ac55ef9a10f7095b2438223332))
+ ROM_REGION(0x400,"keyboard_mcu",0) // i8048
+ ROM_LOAD("40027.ic801", 0, 0x400, CRC(25260958) SHA1(210e7e25228c79d2920679f217d68e4f14055825))
+ROM_END
+
+
+/* these are all variants on the pcw design */
+/* major difference is memory configuration and drive type */
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
+COMP( 1985, pcw8256, 0, 0, pcw8256, pcw, pcw_state, pcw, "Amstrad plc", "PCW8256", MACHINE_NOT_WORKING)
+COMP( 1985, pcw8512, pcw8256, 0, pcw8512, pcw, pcw_state, pcw, "Amstrad plc", "PCW8512", MACHINE_NOT_WORKING)
+COMP( 1987, pcw9256, pcw8256, 0, pcw8256, pcw, pcw_state, pcw, "Amstrad plc", "PCW9256", MACHINE_NOT_WORKING)
+COMP( 1987, pcw9512, pcw8256, 0, pcw9512, pcw, pcw_state, pcw, "Amstrad plc", "PCW9512 (+)", MACHINE_NOT_WORKING)
+COMP( 1993, pcw10, pcw8256, 0, pcw8512, pcw, pcw_state, pcw, "Amstrad plc", "PCW10", MACHINE_NOT_WORKING)