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SPARC keyboard: remove transmit delay hack, emulate keyclick [Vas Crabb]

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This commit is contained in:
Vas Crabb 2016-07-21 01:24:48 +10:00
parent 4477e5d4b0
commit 9711a68c54
2 changed files with 42 additions and 28 deletions
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65
src/devices/bus/rs232/sparckbd.cpp
View File

@ -6,9 +6,8 @@
/*
TODO: implement keyclick
TODO: determine default keyclick state on real keyboard
TODO: use 1,200 Baud properly once we work out what's going on with the SCC
TODO: scancodes for extra key on international layout
HLE SPARC serial keyboard compatible with Sun Type 4/5/6
@ -16,7 +15,7 @@
0000 0001 reset (keyboard responds with self test pass/fail)
0000 0010 bell on (480us period)
0000 0011 bell off
0000 1010 enable keyclick (5us duration 480us period on make)
0000 1010 enable keyclick (5ms duration 480us period on make)
0000 1011 disable keyclick
0000 1110 ---- lscn LED (1 = on, l = caps lock, s = scroll lock, c = compose, n = num lock)
0000 1111 layout request (keyboard responds with layout response)
@ -299,7 +298,7 @@ sparc_keyboard_device::sparc_keyboard_device(
, device_serial_interface(mconfig, *this)
, device_rs232_port_interface(mconfig, *this)
, m_scan_timer(nullptr)
, m_tx_delay_timer(nullptr)
, m_click_timer(nullptr)
, m_dips(*this, "DIP")
, m_key_inputs{
{ *this, "ROW0" }, { *this, "ROW1" },
@ -314,6 +313,7 @@ sparc_keyboard_device::sparc_keyboard_device(
, m_tail(0)
, m_empty(0)
, m_rx_state(RX_IDLE)
, m_keyclick(0)
, m_beeper_state(0)
{
}
@ -340,7 +340,7 @@ void sparc_keyboard_device::device_start()
device_serial_interface::register_save_state(machine().save(), this);
m_scan_timer = timer_alloc(SCAN_TIMER_ID);
m_tx_delay_timer = timer_alloc(TX_DELAY_TIMER_ID);
m_click_timer = timer_alloc(CLICK_TIMER_ID);
save_item(NAME(m_current_keys));
save_item(NAME(m_next_row));
@ -349,6 +349,7 @@ void sparc_keyboard_device::device_start()
save_item(NAME(m_tail));
save_item(NAME(m_empty));
save_item(NAME(m_rx_state));
save_item(NAME(m_keyclick));
save_item(NAME(m_beeper_state));
}
@ -362,11 +363,12 @@ void sparc_keyboard_device::device_reset()
m_head = m_tail = 0;
m_empty = 1;
m_rx_state = RX_IDLE;
m_keyclick = 0;
m_beeper_state = 0;
// configure device_serial_interface
set_data_frame(1, 8, PARITY_NONE, STOP_BITS_1);
set_rate(1200);
set_rate(1'200);
receive_register_reset();
transmit_register_reset();
@ -391,7 +393,7 @@ void sparc_keyboard_device::device_reset()
// kick the scan timer
m_scan_timer->adjust(attotime::from_hz(1'200), 0, attotime::from_hz(1'200));
m_tx_delay_timer->reset();
m_click_timer->reset();
}
@ -403,20 +405,9 @@ void sparc_keyboard_device::device_timer(emu_timer &timer, device_timer_id id, i
scan_row();
break;
case TX_DELAY_TIMER_ID:
assert(is_transmit_register_empty());
assert(!m_empty || (m_head == m_tail));
assert(m_head < ARRAY_LENGTH(m_fifo));
assert(m_tail < ARRAY_LENGTH(m_fifo));
if (!m_empty)
{
printf("SPARC keyboard: send queued: %02x\n", m_fifo[m_head]);
fflush(stdout);
transmit_register_setup(m_fifo[m_head]);
m_head = (m_head + 1) & 0x0fU;
m_empty = (m_head == m_tail) ? 1 : 0;
}
case CLICK_TIMER_ID:
m_beeper_state &= ~UINT8(BEEPER_CLICK);
m_beeper->set_state(m_beeper_state ? 1 : 0);
break;
default:
@ -433,7 +424,18 @@ void sparc_keyboard_device::tra_callback()
void sparc_keyboard_device::tra_complete()
{
m_tx_delay_timer->reset(attotime::from_hz(1'200 / 10));
assert(!m_empty || (m_head == m_tail));
assert(m_head < ARRAY_LENGTH(m_fifo));
assert(m_tail < ARRAY_LENGTH(m_fifo));
if (!m_empty)
{
printf("SPARC keyboard: send queued: %02x\n", m_fifo[m_head]);
fflush(stdout);
transmit_register_setup(m_fifo[m_head]);
m_head = (m_head + 1) & 0x0fU;
m_empty = (m_head == m_tail) ? 1 : 0;
}
}
@ -489,7 +491,7 @@ void sparc_keyboard_device::rcv_complete()
case 0x0aU:
printf("SPARC keyboard: keyclick on\n");
fflush(stdout);
logerror("Keyclick on");
m_keyclick = 1;
m_rx_state = RX_IDLE;
break;
@ -497,7 +499,10 @@ void sparc_keyboard_device::rcv_complete()
case 0x0bU:
printf("SPARC keyboard: keyclick off\n");
fflush(stdout);
logerror("Keyclick off");
m_keyclick = 0;
m_click_timer->reset();
m_beeper_state &= ~UINT8(BEEPER_CLICK);
m_beeper->set_state(m_beeper_state ? 1 : 0);
m_rx_state = RX_IDLE;
break;
@ -531,7 +536,7 @@ void sparc_keyboard_device::scan_row()
UINT16 const row(m_key_inputs[m_next_row]->read());
UINT16 &current(m_current_keys[m_next_row]);
bool keyup(false);
bool keydown(false), keyup(false);
for (UINT8 bit = 0; (bit < 16) && (m_empty || (m_head != m_tail)); ++bit)
{
@ -539,12 +544,20 @@ void sparc_keyboard_device::scan_row()
if ((row ^ current) & mask)
{
UINT8 const make_break((row & mask) ? 0x00U : 0x80U);
keydown = keydown || !bool(make_break);
keyup = keyup || bool(make_break);
current = (current & ~mask) | (row & mask);
send_byte(make_break | (m_next_row << 4) | bit);
}
}
if (keydown && m_keyclick)
{
m_beeper_state |= UINT8(BEEPER_CLICK);
m_beeper->set_state(m_beeper_state ? 1 : 0);
m_click_timer->reset(attotime::from_msec(5));
}
if (keyup)
{
UINT16 const acc(
@ -567,7 +580,7 @@ void sparc_keyboard_device::send_byte(UINT8 code)
assert(m_head < ARRAY_LENGTH(m_fifo));
assert(m_tail < ARRAY_LENGTH(m_fifo));
if (m_empty && is_transmit_register_empty() && (m_tx_delay_timer->remaining() == attotime::never))
if (m_empty && is_transmit_register_empty())
{
printf("SPARC keyboard: send immediately: %02x\n", code);
fflush(stdout);

5
src/devices/bus/rs232/sparckbd.h
View File

@ -35,7 +35,7 @@ private:
// device_serial_interface uses 10'000 range
enum {
SCAN_TIMER_ID = 20'000,
TX_DELAY_TIMER_ID
CLICK_TIMER_ID
};
// TODO: ensure these don't clash with diagnostic LEDs on host computer
@ -60,7 +60,7 @@ private:
void send_byte(UINT8 code);
emu_timer *m_scan_timer;
emu_timer *m_tx_delay_timer;
emu_timer *m_click_timer;
required_ioport m_dips;
required_ioport m_key_inputs[8];
required_device<beep_device> m_beeper;
@ -74,6 +74,7 @@ private:
UINT8 m_rx_state;
UINT8 m_keyclick;
UINT8 m_beeper_state;
};