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|
// license:BSD-3-Clause
// copyright-holders:Patrick Mackinlay
/*
* A high level emulation implementation of the Intergraph InterPro keyboard,
* largely copied from the sunkbd and psi hle implementations.
*
* These keyboards have two primary banks of keys. The lower bank consists of
* a total of 67 regular keyboard keyswitches plus a numeric keypad with a
* further 18 keys. The upper bank consists of 57 membrane-style programmable
* function keys in groups of 9, 36 and 12 from left to right.
*
* The following describes the key labels and positions according to the
* standard US English keyboard layout. At least a German keyboard variant is
* known to have existed.
*
* Upper bank keys indicated here with asterisks are printed in white, as are
* all the A*, B* and C* keys; all the others are printed in brown.
*
* Setup* Home* 2nd A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 2nd
* Help Clear F* F*
* Screen
*
* Find Insert Print B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16
* Here Screen*
* Remove
*
* Select Prev Next C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16
* Screen Screen
*
*
* In between the banks on the right hand side, there is a row of LEDs, the
* first three are pictures, rather than the descriptions given here).
*
* Disk Lock ----- L1 L2 L3 L4
*
* Lower bank keys have up to 3 labels, in shifted and unshifted positions, and
* in red on the front face of the key-cap.
*
* Esc ~ ! @ # $ % ^ & * ( ) _ + Back Delete PF1 PF2 PF3 PF4
* ` 1 2 3 4 5 6 7 8 9 0 - = Space ± ÷ × +
* Esc Num Lk ScrlLk Sys
*
* Alt Tab Q W E R T Y U I O P { } 7 8 9 _
* Mode [ ]
* Home ↑ Pg Up Prt Sc
*
* Ctrl Caps A S D F G H J K L : " | Return 4 5 6 ,
* Lock
* ← → −
*
* Shift > Z X C V B N M , . ? Shift ▲ 1 2 3 =
* < ■
* End ↓ Pg Dn
*
* Hold Super- Line Repeat ◄ ■ ► 0 ◦
* Screen impose Feed ▼ . Enter
* Ins Del +
*
* Alt Mode and Caps Lock keys have locking switches, capturing the key in the
* depressed position, as well as physical leds visible on the keycaps
* themselves. The keyboard also has two physical buttons on the back face of
* the keyboard, circular button labelled Boot, and a square one labelled Reset.
*
* The keyboard uses a 1200bps serial protocol to communicate with the host,
* with 1 start bit, 8 data bits, 1 stop bit, and even parity. The protocol
* as far as is known consists of the following sequences:
*
* From Host Purpose Expected Response
* --------- ------- -----------------
* 0x1b 0x42 <xx> probably controls several functions:
*
* 0x01 sound bell?
* 0x04 keyclick on
* 0x08 membrane click on
* 0x20 bell tone loud/soft/none? (seems only loud/none)
*
* 0x1b 0x44 reset/diag 0xff <status>, where status bits are set to
* indicate diagnostic failure source: 0x8=EPROM
* checksum, 0x10=RAM error, 0x20=ROM checksum
*
* 0x1b 0x55 activate scan code keyup/down mode?
*
* The keyboard has a keyboard click function, and the LED indicators described
* earlier, meaning that there are additional commands to enable and disable
* these functions.
*
* The keyboard has at least two operating modes: a simple ASCII mode which is
* active after reset, and a scancode mode generating make/break codes with
* full support for all the qualifiers and other non-ASCII keys.
*
* In ASCII mode, the keyboard transmits ASCII codes corresponding to the key
* labels for keys which map to the ASCII character set. Modifiers are applied
* by the keyboard itself, and do not generate make/break codes of their own.
*
* The following non-ASCII sequences are recognised in the system software,
* and likely correspond to specific keyboard keys or buttons:
*
* Sequence Function
* -------- --------
* <esc> ^L Reboot, possibly maps to Reboot button
* <esc> ^M Unknown
* <esc> ^N Unknown, but operates as a toggle
* <esc> ^U Unknown
*
* TODO
* - unmapped keys
* - auto-repeat
* - key click and LED commands
* - alternative layouts
* - scancode make/break mode
*
*/
#include "emu.h"
#include "hle.h"
#include "machine/keyboard.ipp"
#include "speaker.h"
#define VERBOSE 0
#include "logmacro.h"
DEFINE_DEVICE_TYPE(INTERPRO_HLE_EN_US_KEYBOARD, bus::interpro::keyboard::hle_en_us_device, "kbd_hle_en_us", "InterPro Keyboard (HLE, US English)")
namespace bus::interpro::keyboard {
namespace {
u8 const TRANSLATION_TABLE[4][5][16] =
{
// unshifted
{
{ 0x1b, 0x60, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x2d, 0x3d, 0x08, 0x7f }, // 0
{ 0x00, 0x09, 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69, 0x6f, 0x70, 0x5b, 0x5d, 0x00, 0x00 }, // 1
{ 0x00, 0x00, 0x61, 0x73, 0x64, 0x66, 0x67, 0x68, 0x6a, 0x6b, 0x6c, 0x3b, 0x27, 0x5c, 0x0d, 0x00 }, // 2
{ 0x00, 0x3c, 0x7a, 0x78, 0x63, 0x76, 0x62, 0x6e, 0x6d, 0x2c, 0x2e, 0x2f, 0x00, 0x00, 0x00, 0x00 }, // 3
{ 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 4
},
// shifted
{
{ 0x1b, 0x7e, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5e, 0x26, 0x2a, 0x28, 0x29, 0x5f, 0x2b, 0x08, 0x7f }, // 0
{ 0x00, 0x09, 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49, 0x4f, 0x50, 0x7b, 0x7d, 0x00, 0x00 }, // 1
{ 0x00, 0x00, 0x41, 0x53, 0x44, 0x46, 0x47, 0x48, 0x4a, 0x4b, 0x4c, 0x3a, 0x22, 0x7c, 0x0d, 0x00 }, // 2
{ 0x00, 0x3e, 0x5a, 0x58, 0x43, 0x56, 0x42, 0x4e, 0x4d, 0x2c, 0x2e, 0x3f, 0x00, 0x00, 0x00, 0x00 }, // 3
{ 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 4
},
// unshifted-control
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 0
{ 0x00, 0x00, 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1b, 0x1d, 0x00, 0x00 }, // 1
{ 0x00, 0x00, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x00, 0x00, 0x1c, 0x00, 0x00 }, // 2
{ 0x00, 0x00, 0x1a, 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 3
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 4
},
// shifted-control
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 0
{ 0x00, 0x00, 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1b, 0x1d, 0x00, 0x00 }, // 1
{ 0x00, 0x00, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x00, 0x00, 0x1c, 0x00, 0x00 }, // 2
{ 0x00, 0x00, 0x1a, 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 3
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // 4
}
};
INPUT_PORTS_START(interpro_en_us)
PORT_START("modifiers")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_NAME("Control") PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_NAME("Shift") PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_NAME("Caps Lock") PORT_TOGGLE PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
PORT_START("row_0")
PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_NAME("Esc") PORT_CHAR(UCHAR_MAMEKEY(ESC))
PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~')
PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_NAME("Backspace") PORT_CHAR(8)
PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_NAME("Delete") PORT_CHAR(UCHAR_MAMEKEY(DEL))
PORT_START("row_1")
PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_UNUSED) // "Alt Mode"
PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_NAME("Tab") PORT_CHAR(9)
PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
PORT_START("row_2")
PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_UNUSED) // CTRL
PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_UNUSED) // LOCK
PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_NAME("Return") PORT_CHAR(13)
PORT_START("row_3")
PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_UNUSED) // LSHIFT
PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('<') PORT_CHAR('>')
PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
PORT_BIT(0x1000, IP_ACTIVE_HIGH, IPT_UNUSED) // RSHIFT
PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_NAME("Up") PORT_CHAR(UCHAR_MAMEKEY(UP))
PORT_START("row_4")
PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_UNUSED) // "Hold Screen"
PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_UNUSED) // "Superimpose"
PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_UNUSED) // "Line Feed"
PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_NAME("Space") PORT_CHAR(UCHAR_MAMEKEY(SPACE))
PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_UNUSED) // "Repeat"
PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_NAME("Left") PORT_CHAR(UCHAR_MAMEKEY(LEFT))
PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_NAME("Down") PORT_CHAR(UCHAR_MAMEKEY(DOWN))
PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_NAME("Right") PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
INPUT_PORTS_END
INPUT_PORTS_START(hle_en_us_device)
PORT_INCLUDE(interpro_en_us)
INPUT_PORTS_END
} // anonymous namespace
hle_device_base::hle_device_base(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock)
: device_t(mconfig, type, tag, owner, clock)
, device_buffered_serial_interface(mconfig, *this)
, device_interpro_keyboard_port_interface(mconfig, *this)
, device_matrix_keyboard_interface(mconfig, *this, "row_0", "row_1", "row_2", "row_3", "row_4")
, m_click_timer(nullptr)
, m_beeper(*this, "beeper")
, m_make_count(0U)
, m_rx_state(RX_IDLE)
, m_keyclick(0U)
, m_beeper_state(0U)
{
}
hle_device_base::~hle_device_base()
{
}
WRITE_LINE_MEMBER(hle_device_base::input_txd)
{
device_buffered_serial_interface::rx_w(state);
}
void hle_device_base::device_add_mconfig(machine_config &config)
{
SPEAKER(config, "bell").front_center();
BEEP(config, m_beeper, ATTOSECONDS_TO_HZ(480 * ATTOSECONDS_PER_MICROSECOND)).add_route(ALL_OUTPUTS, "bell", 1.0);
}
void hle_device_base::device_start()
{
m_click_timer = timer_alloc(FUNC(hle_device_base::click_tick), this);
save_item(NAME(m_make_count));
save_item(NAME(m_rx_state));
save_item(NAME(m_keyclick));
save_item(NAME(m_beeper_state));
}
void hle_device_base::device_reset()
{
// initialise state
clear_fifo();
m_make_count = 0U;
m_rx_state = RX_IDLE;
m_keyclick = 0U;
m_beeper_state = 0x00U;
// configure device_buffered_serial_interface
set_data_frame(START_BIT_COUNT, DATA_BIT_COUNT, PARITY, STOP_BITS);
set_rate(BAUD);
receive_register_reset();
transmit_register_reset();
// no beep
m_click_timer->reset();
// kick the base
reset_key_state();
start_processing(attotime::from_hz(1'200));
}
TIMER_CALLBACK_MEMBER(hle_device_base::click_tick)
{
m_beeper_state &= ~u8(BEEPER_CLICK);
m_beeper->set_state(m_beeper_state ? 1 : 0);
}
void hle_device_base::tra_callback()
{
output_rxd(transmit_register_get_data_bit());
}
void hle_device_base::tra_complete()
{
if (fifo_full())
start_processing(attotime::from_hz(1'200));
device_buffered_serial_interface::tra_complete();
}
void hle_device_base::key_make(u8 row, u8 column)
{
// we should have stopped processing if we filled the FIFO
assert(!fifo_full());
// send the make code, click if desired
transmit_byte(translate(row, column));
if (m_keyclick)
{
m_beeper_state |= u8(BEEPER_CLICK);
m_beeper->set_state(m_beeper_state ? 1 : 0);
m_click_timer->reset(attotime::from_msec(5));
}
// count keys
++m_make_count;
assert(m_make_count);
}
void hle_device_base::key_break(u8 row, u8 column)
{
// we should have stopped processing if we filled the FIFO
assert(!fifo_full());
assert(m_make_count);
--m_make_count;
// check our counting
assert(are_all_keys_up() == !bool(m_make_count));
}
void hle_device_base::transmit_byte(u8 byte)
{
LOG("transmit_byte 0x%02x\n", byte);
device_buffered_serial_interface::transmit_byte(byte);
if (fifo_full())
stop_processing();
}
void hle_device_base::received_byte(u8 byte)
{
LOG("received_byte 0x%02x\n", byte);
switch (m_rx_state)
{
case RX_COMMAND:
switch (byte)
{
case 0x42: // configure flags
m_rx_state = RX_FLAGS;
break;
case 0x44: // reset/diagnostic
transmit_byte(0xff);
transmit_byte(0x00);
m_rx_state = RX_IDLE;
break;
case 0x55:
break;
}
break;
case RX_FLAGS:
// FIXME: this logic is wrong (should decode the various fields), but
// generates bell sounds at the right time for now
switch (byte)
{
case 0x28:
LOG("bell on\n");
m_beeper_state |= u8(BEEPER_BELL);
m_beeper->set_state(m_beeper_state ? 1 : 0);
break;
case 0x29:
LOG("bell off\n");
m_beeper_state &= ~u8(BEEPER_BELL);
m_beeper->set_state(m_beeper_state ? 1 : 0);
break;
default:
break;
}
m_rx_state = RX_IDLE;
break;
case RX_IDLE:
if (byte == 0x1b)
m_rx_state = RX_COMMAND;
break;
}
}
hle_en_us_device::hle_en_us_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
: hle_device_base(mconfig, INTERPRO_HLE_EN_US_KEYBOARD, tag, owner, clock),
m_modifiers(*this, "modifiers")
{
}
ioport_constructor hle_en_us_device::device_input_ports() const
{
return INPUT_PORTS_NAME(hle_en_us_device);
}
u8 hle_en_us_device::translate(u8 row, u8 column)
{
u8 const modifiers(m_modifiers->read());
bool const ctrl(modifiers & 0x01);
bool const shift(bool(modifiers & 0x02) || (bool(modifiers & 0x04)));
bool const ctrl_shift(ctrl && shift);
unsigned const map(ctrl_shift ? 3 : ctrl ? 2 : shift ? 1 : 0);
return TRANSLATION_TABLE[map][row][column];
}
} // namespace bus::interpro::keyboard
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