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hp64k: rs232 port added

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This commit is contained in:
fulivi 2015-08-13 16:11:32 +02:00
parent 79e87536d5
commit c3d3c118f7
1 changed files with 45 additions and 5 deletions
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50
src/mess/drivers/hp64k.c
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@ -160,6 +160,7 @@
#include "sound/beep.h"
#include "machine/clock.h"
#include "machine/i8251.h"
#include "bus/rs232/rs232.h"
#define BIT_MASK(n) (1U << (n))
@ -224,7 +225,10 @@ public:
DECLARE_WRITE_LINE_MEMBER(hp64k_rts_w);
DECLARE_WRITE16_MEMBER(hp64k_loopback_w);
void hp64k_update_loopback(void);
DECLARE_WRITE_LINE_MEMBER(hp64k_rs232_rxd_w);
DECLARE_WRITE_LINE_MEMBER(hp64k_rs232_dcd_w);
DECLARE_WRITE_LINE_MEMBER(hp64k_rs232_cts_w);
DECLARE_WRITE16_MEMBER(hp64k_beep_w);
TIMER_DEVICE_CALLBACK_MEMBER(hp64k_beeper_off);
@ -249,6 +253,7 @@ private:
required_device<clock_device> m_baud_rate;
required_ioport m_s5_sw;
required_device<i8251_device> m_uart;
required_device<rs232_port_device> m_rs232;
// Character generator
const UINT8 *m_chargen;
@ -366,7 +371,8 @@ hp64k_state::hp64k_state(const machine_config &mconfig, device_type type, const
m_beep_timer(*this , "beep_timer"),
m_baud_rate(*this , "baud_rate"),
m_s5_sw(*this , "s5_sw"),
m_uart(*this , "uart")
m_uart(*this , "uart"),
m_rs232(*this , "rs232")
{
}
@ -1010,6 +1016,7 @@ WRITE_LINE_MEMBER(hp64k_state::hp64k_txd_w)
if (m_loopback) {
m_uart->write_rxd(state);
}
m_rs232->write_txd(state);
}
WRITE_LINE_MEMBER(hp64k_state::hp64k_dtr_w)
@ -1018,14 +1025,20 @@ WRITE_LINE_MEMBER(hp64k_state::hp64k_dtr_w)
if (m_loopback) {
m_uart->write_dsr(state);
}
m_rs232->write_dtr(state);
}
WRITE_LINE_MEMBER(hp64k_state::hp64k_rts_w)
{
if (BIT(m_s5_sw->read() , 0)) {
// Full duplex, RTS/ = 0
state = 0;
}
m_rts_state = state;
if (m_loopback) {
m_uart->write_cts(state);
}
m_rs232->write_rts(state);
}
WRITE16_MEMBER(hp64k_state::hp64k_loopback_w)
@ -1041,9 +1054,30 @@ void hp64k_state::hp64k_update_loopback(void)
m_uart->write_dsr(m_dtr_state);
m_uart->write_cts(m_rts_state);
} else {
m_uart->write_rxd(1);
m_uart->write_dsr(1);
m_uart->write_cts(1);
m_uart->write_rxd(m_rs232->rxd_r());
m_uart->write_dsr(m_rs232->dcd_r());
m_uart->write_cts(m_rs232->cts_r());
}
}
WRITE_LINE_MEMBER(hp64k_state::hp64k_rs232_rxd_w)
{
if (!m_loopback) {
m_uart->write_rxd(state);
}
}
WRITE_LINE_MEMBER(hp64k_state::hp64k_rs232_dcd_w)
{
if (!m_loopback) {
m_uart->write_dsr(state);
}
}
WRITE_LINE_MEMBER(hp64k_state::hp64k_rs232_cts_w)
{
if (!m_loopback) {
m_uart->write_cts(state);
}
}
@ -1385,6 +1419,12 @@ static MACHINE_CONFIG_START(hp64k , hp64k_state)
MCFG_I8251_TXD_HANDLER(WRITELINE(hp64k_state , hp64k_txd_w));
MCFG_I8251_DTR_HANDLER(WRITELINE(hp64k_state , hp64k_dtr_w));
MCFG_I8251_RTS_HANDLER(WRITELINE(hp64k_state , hp64k_rts_w));
MCFG_RS232_PORT_ADD("rs232" , default_rs232_devices , NULL)
MCFG_RS232_RXD_HANDLER(WRITELINE(hp64k_state , hp64k_rs232_rxd_w))
MCFG_RS232_DCD_HANDLER(WRITELINE(hp64k_state , hp64k_rs232_dcd_w))
MCFG_RS232_CTS_HANDLER(WRITELINE(hp64k_state , hp64k_rs232_cts_w))
MACHINE_CONFIG_END
ROM_START(hp64k)