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author Robbbert <Robbbert@users.noreply.github.com>2020-08-01 23:13:13 +1000
committer Robbbert <Robbbert@users.noreply.github.com>2020-08-01 23:13:13 +1000
commit47f2b1b1612fd395bf3e4b6e533c10a119e3292a (patch)
tree77d9dc4084cbc104c49a8466e726af10fba35b60 /src
parent8aae3f87634a42003fdbbecff3f4f391f49cb393 (diff)
dct11em: machine is now usable
Diffstat (limited to 'src')
-rw-r--r--src/mame/drivers/dct11em.cpp156
-rw-r--r--src/mame/layout/dct11em.lay48
2 files changed, 170 insertions, 34 deletions
diff --git a/src/mame/drivers/dct11em.cpp b/src/mame/drivers/dct11em.cpp
index 8888129d6be..c273b2b667a 100644
--- a/src/mame/drivers/dct11em.cpp
+++ b/src/mame/drivers/dct11em.cpp
@@ -6,14 +6,15 @@ DEC DCT11-EM (Evaluation Module)
2010-12-03 Skeleton driver.
+System currently works, but with some hacks to replace the unemulated DC319
+DLART (Digital Link Asynchronous Receiver/Transmitter).
+
TODO:
-- user LED
-- keyboard (not in manual so have to guess)
-- HALT and INT buttons (to HALT and PF input lines)
+- user LED (it's there but it doesn't work)
- DLART device to be emulated
-- hookups between DLART, UART and remaining interrupts
-- rs232 terminal
+- hookups between DLART (and its DL terminal), UART and remaining interrupts
+
****************************************************************************/
@@ -21,7 +22,9 @@ TODO:
#include "cpu/t11/t11.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
+#include "bus/rs232/rs232.h"
#include "machine/clock.h"
+#include "machine/terminal.h"
#include "dct11em.lh"
@@ -33,10 +36,14 @@ public:
, m_maincpu(*this, "maincpu")
, m_ppi(*this, "ppi")
, m_uart(*this, "uart")
+ , m_terminal(*this, "terminal")
+ , m_io_keyboard(*this, "X%u", 0U)
, m_digits(*this, "digit%d", 0U)
{ }
void dct11em(machine_config &config);
+ DECLARE_INPUT_CHANGED_MEMBER(halt_button);
+ DECLARE_INPUT_CHANGED_MEMBER(int_button);
private:
void machine_reset() override;
@@ -46,17 +53,24 @@ private:
void portc_w(u8);
u8 portc_r();
void irq_encoder(u8, bool);
+ u8 dlart_r(offs_t);
+ void dlart_w(offs_t, u8);
+ void kbd_put(u8 data);
+ u8 m_term_data;
u8 m_seg_lower;
u8 m_seg_upper;
u8 m_portc;
u16 m_irqs;
+ bool m_dlart_maintmode;
void mem_map(address_map &map);
required_device<t11_device> m_maincpu;
required_device<i8255_device> m_ppi;
required_device<i8251_device> m_uart;
+ required_device<generic_terminal_device> m_terminal;
+ required_ioport_array<5> m_io_keyboard;
output_finder<12> m_digits;
};
@@ -67,11 +81,54 @@ void dct11em_state::mem_map(address_map &map)
map(0x1000, 0x1fff).noprw(); // the ram test reads/writes here even though there's no ram
map(0x2000, 0x2fff).ram(); // expansion sockets, 2x 6116
map(0xa000, 0xdfff).rom();
- map(0xff20, 0xff27).lw8(NAME([this] (offs_t offset, u8 data) { m_ppi->write(offset>>1, data); }));
- map(0xff28, 0xff2b).lw8(NAME([this] (offs_t offset, u8 data) { m_uart->write(offset>>1, data); }));
+ map(0xff20, 0xff27).nopr().lw8(NAME([this] (offs_t offset, u8 data) { m_ppi->write(offset>>1, data); }));
+ map(0xff28, 0xff2b).nopr().lw8(NAME([this] (offs_t offset, u8 data) { m_uart->write(offset>>1, data); }));
map(0xff60, 0xff67).lr8(NAME([this] (offs_t offset) { return m_ppi->read(offset>>1); }));
map(0xff68, 0xff6b).lr8(NAME([this] (offs_t offset) { return m_uart->read(offset>>1); }));
- //map(0xff70, 0xff7f). // DC309 DLART unemulated device - uart to terminal
+ //map(0xff70, 0xff7f). // DC319 DLART unemulated device - uart to terminal
+ map(0xff70, 0xff7f).rw(FUNC(dct11em_state::dlart_r), FUNC(dct11em_state::dlart_w));
+}
+
+// dummy routines to pass the DLART test and to talk to the ascii terminal
+u8 dct11em_state::dlart_r(offs_t offset)
+{
+ offset >>= 1;
+ switch (offset)
+ {
+ case 0:
+ if (m_term_data)
+ return 0xff;
+ else
+ return 0xfd;
+ case 1:
+ {
+ u8 ret = m_term_data;
+ irq_encoder(3, 0); // Release IRQ3
+ m_term_data = 0;
+ return ret;
+ }
+ default:
+ return 0xfd;
+ }
+}
+
+void dct11em_state::dlart_w(offs_t offset, u8 data)
+{
+ offset >>= 1;
+ switch (offset)
+ {
+ case 3:
+ if (m_dlart_maintmode)
+ m_term_data = data;
+ else
+ m_terminal->write(data);
+ break;
+ case 2:
+ m_dlart_maintmode = BIT(data, 4);
+ break;
+ default:
+ break;
+ }
}
void dct11em_state::porta_w(u8 data)
@@ -88,23 +145,22 @@ void dct11em_state::portc_w(u8 data)
if (BIT(data, 3))
{
m_seg_upper = m_seg_lower;
- irq_encoder(10, 0);
+ irq_encoder(10, 0); // Release IRQ10
}
if (data < 6)
{
m_digits[data] = m_seg_lower;
m_digits[data+6] = m_seg_upper;
}
- if (data == 10)
- output().set_value("led0", 0);
- else
- if (data == 11)
- output().set_value("led0", 1);
+ output().set_value("led0", (data!=9));
}
u8 dct11em_state::portc_r()
{
- return 0;
+ if (m_portc < 5)
+ return m_io_keyboard[m_portc]->read();
+ else
+ return 0;
}
/*
@@ -149,13 +205,59 @@ void dct11em_state::machine_start()
save_item(NAME(m_seg_upper));
save_item(NAME(m_portc));
save_item(NAME(m_irqs));
+ save_item(NAME(m_term_data));
+ save_item(NAME(m_dlart_maintmode));
}
/* Input ports */
static INPUT_PORTS_START( dct11em )
+ PORT_START("X0")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CLR") PORT_CODE(KEYCODE_SPACE)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("1/GOLED") PORT_CODE(KEYCODE_1) // Go with LEDs
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("4/PROTEC") PORT_CODE(KEYCODE_4) // Release protection
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("7/PC") PORT_CODE(KEYCODE_7)
+ PORT_START("X1")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("0/CANCEL") PORT_CODE(KEYCODE_0) // Cancel breakpoints
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("2/CONSOL") PORT_CODE(KEYCODE_2) // Start console
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("5") PORT_CODE(KEYCODE_5)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("8/PS") PORT_CODE(KEYCODE_8)
+ PORT_START("X2")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("EXA/ENTER") PORT_CODE(KEYCODE_ENTER)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("3/BAUD") PORT_CODE(KEYCODE_3) // Set baud rates
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("6/SP") PORT_CODE(KEYCODE_6)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("9/WP") PORT_CODE(KEYCODE_9)
+ PORT_START("X3")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ADV") PORT_CODE(KEYCODE_UP)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("BAC") PORT_CODE(KEYCODE_DOWN)
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("REG") PORT_CODE(KEYCODE_R)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ADR") PORT_CODE(KEYCODE_MINUS) // Address
+ PORT_START("X4")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("SST") PORT_CODE(KEYCODE_S) // Single-step
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("GO") PORT_CODE(KEYCODE_X)
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("BPT") PORT_CODE(KEYCODE_B) // Breakpoint
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("FNC") PORT_CODE(KEYCODE_LALT) // Function
+ PORT_START("X5")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("HALT") PORT_CODE(KEYCODE_H) PORT_CHANGED_MEMBER(DEVICE_SELF, dct11em_state, halt_button, 0)
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("INT") PORT_CODE(KEYCODE_I) PORT_CHANGED_MEMBER(DEVICE_SELF, dct11em_state, int_button, 0)
INPUT_PORTS_END
+INPUT_CHANGED_MEMBER(dct11em_state::halt_button)
+{
+ m_maincpu->set_input_line(t11_device::HLT_LINE, newval ? ASSERT_LINE : CLEAR_LINE);
+}
+
+INPUT_CHANGED_MEMBER(dct11em_state::int_button)
+{
+ m_maincpu->set_input_line(t11_device::PF_LINE, newval ? ASSERT_LINE : CLEAR_LINE);
+}
+
+void dct11em_state::kbd_put(u8 data)
+{
+ m_term_data = data;
+ irq_encoder(3, 1); // Assert IRQ3
+}
+
void dct11em_state::dct11em(machine_config &config)
{
/* basic machine hardware */
@@ -169,17 +271,31 @@ void dct11em_state::dct11em(machine_config &config)
m_ppi->out_pa_callback().set(FUNC(dct11em_state::porta_w)); // segments
// port B - expansion interface
m_ppi->in_pc_callback().set(FUNC(dct11em_state::portc_r)); // keyboard
- m_ppi->out_pc_callback().set(FUNC(dct11em_state::portc_w)); // various
+ m_ppi->out_pc_callback().set(FUNC(dct11em_state::portc_w)); // digits
I8251(config, m_uart, 2'457'600 / 8);
- // txc and rxc come from DLART pin 34
+ m_uart->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
+ m_uart->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));
+ m_uart->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
+ m_uart->rxrdy_handler().set([this] (bool state) { irq_encoder(7, state); });
+ m_uart->txrdy_handler().set([this] (bool state) { irq_encoder(6, state); });
clock_device &inta_clock(CLOCK(config, "inta_clock", 614'400 / 768)); // 800Hz, from DLART pin 25
- inta_clock.signal_handler().set([this] (bool state) { if (state) irq_encoder(10, 1); });
+ inta_clock.signal_handler().set([this] (bool state) { if (state) irq_encoder(10, 1); }); // Assert IRQ10
+
+ //clock_device &dlart_clock(CLOCK(config, "dlart_clock", 2'457'600 / 4)); --> to DLART CLK pin 32
+
+ clock_device &uart_clock(CLOCK(config, "uart_clock", 2'457'600 / 32)); // from DLART pin 34
+ uart_clock.signal_handler().set(m_uart, FUNC(i8251_device::write_txc));
+ uart_clock.signal_handler().append(m_uart, FUNC(i8251_device::write_rxc));
- //clock_device &dlart_clock(CLOCK(config, "dlart_clock", 7'500'000 / 4)); --> to DLART CLK pin 32
+ rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); // connection to host mainframe, does nothing for us
+ rs232.rxd_handler().set(m_uart, FUNC(i8251_device::write_rxd));
+ rs232.dsr_handler().set(m_uart, FUNC(i8251_device::write_dsr));
+ rs232.cts_handler().set(m_uart, FUNC(i8251_device::write_cts));
- //clock_device &uart_clock(CLOCK(config, "uart_clock", 2'457'600 / 8)); --> to UART CLK
+ GENERIC_TERMINAL(config, m_terminal, 0); // Main terminal for now
+ m_terminal->set_keyboard_callback(FUNC(dct11em_state::kbd_put));
}
/* ROM definition */
diff --git a/src/mame/layout/dct11em.lay b/src/mame/layout/dct11em.lay
index 44c10d9acaa..9046a2f438e 100644
--- a/src/mame/layout/dct11em.lay
+++ b/src/mame/layout/dct11em.lay
@@ -3,11 +3,21 @@
license:CC0
-->
<mamelayout version="2">
+ <element name="a_led">
+ <disk state="0">
+ <color red="0.0" green="0.75" blue="0.0" />
+ </disk>
+ <disk state="1">
+ <color red="0.0" green="0.15" blue="0.0" />
+ </disk>
+ </element>
+
<element name="digit" defstate="0">
<led7seg>
<color red="0.75" green="0.0" blue="0.0" />
</led7seg>
</element>
+
<element name="background">
<rect>
<bounds left="0" top="0" right="1" bottom="1" />
@@ -16,45 +26,55 @@ license:CC0
</element>
<view name="Default Layout">
+ <screen index="0">
+ <bounds x="0" y="0" width="362" height="262" />
+ </screen>
<!-- Black background -->
- <bezel element="background">
- <bounds left="97" top="0" right="405" bottom="195" />
+ <backdrop element="background">
+ <bounds left="0" top="262" right="274" bottom="350" />
+ </backdrop>
+
+ <bezel name="led0" element="a_led">
+ <bounds left="300" top="300" right="310" bottom="310" />
</bezel>
+
<bezel name="digit11" element="digit">
- <bounds left="107" top="10" right="155" bottom="90" />
+ <bounds left="10" top="267" right="44" bottom="305" />
</bezel>
<bezel name="digit10" element="digit">
- <bounds left="155" top="10" right="203" bottom="90" />
+ <bounds left="54" top="267" right="88" bottom="305" />
</bezel>
<bezel name="digit9" element="digit">
- <bounds left="203" top="10" right="251" bottom="90" />
+ <bounds left="98" top="267" right="132" bottom="305" />
</bezel>
<bezel name="digit8" element="digit">
- <bounds left="251" top="10" right="299" bottom="90" />
+ <bounds left="142" top="267" right="176" bottom="305" />
</bezel>
<bezel name="digit7" element="digit">
- <bounds left="299" top="10" right="347" bottom="90" />
+ <bounds left="186" top="267" right="220" bottom="305" />
</bezel>
<bezel name="digit6" element="digit">
- <bounds left="347" top="10" right="395" bottom="90" />
+ <bounds left="230" top="267" right="264" bottom="305" />
</bezel>
+
<bezel name="digit5" element="digit">
- <bounds left="107" top="105" right="155" bottom="185" />
+ <bounds left="10" top="307" right="44" bottom="345" />
</bezel>
<bezel name="digit4" element="digit">
- <bounds left="155" top="105" right="203" bottom="185" />
+ <bounds left="54" top="307" right="88" bottom="345" />
</bezel>
<bezel name="digit3" element="digit">
- <bounds left="203" top="105" right="251" bottom="185" />
+ <bounds left="98" top="307" right="132" bottom="345" />
</bezel>
<bezel name="digit2" element="digit">
- <bounds left="251" top="105" right="299" bottom="185" />
+ <bounds left="142" top="307" right="176" bottom="345" />
</bezel>
<bezel name="digit1" element="digit">
- <bounds left="299" top="105" right="347" bottom="185" />
+ <bounds left="186" top="307" right="220" bottom="345" />
</bezel>
<bezel name="digit0" element="digit">
- <bounds left="347" top="105" right="395" bottom="185" />
+ <bounds left="230" top="307" right="264" bottom="345" />
</bezel>
+
</view>
</mamelayout>