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BACTA Datalogger: fixed regressions

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This commit is contained in:
James Wallace 2020-08-19 21:01:02 +01:00
parent 055379b5bc
commit 0ca0f8e385
1 changed files with 17 additions and 15 deletions
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18
src/mame/machine/bacta_datalogger.cpp
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@ -5,7 +5,7 @@
#define LOG_DATA (1U << 1) #define LOG_DATA (1U << 1)
#define VERBOSE (LOG_DATA) //#define VERBOSE (LOG_DATA)
//#define LOG_OUTPUT_STREAM std::cout //#define LOG_OUTPUT_STREAM std::cout
#include "logmacro.h" #include "logmacro.h"
@ -38,7 +38,7 @@ bacta_datalogger_device::bacta_datalogger_device(const machine_config &mconfig,
: device_t(mconfig, BACTA_DATALOGGER, tag, owner, clock), : device_t(mconfig, BACTA_DATALOGGER, tag, owner, clock),
device_serial_interface(mconfig, *this), device_serial_interface(mconfig, *this),
m_rxd_handler(*this), m_rxd_handler(*this),
m_last_input(0), m_last_input(-1),
m_output_char(0) m_output_char(0)
{ {
} }
@ -68,10 +68,11 @@ void bacta_datalogger_device::tx_queue()
{ {
if (is_transmit_register_empty()) if (is_transmit_register_empty())
{ {
if (m_output_char != 0) if (m_output_char != -1)
{ {
set_tra_rate(1200);
transmit_register_setup(m_output_char); transmit_register_setup(m_output_char);
m_output_char = 0; m_output_char = -1;
} }
} }
} }
@ -83,6 +84,8 @@ void bacta_datalogger_device::tra_callback()
void bacta_datalogger_device::tra_complete() void bacta_datalogger_device::tra_complete()
{ {
// Shut down transmitter until there's a character
set_tra_rate(attotime::never);
tx_queue(); tx_queue();
} }
@ -93,7 +96,9 @@ void bacta_datalogger_device::rcv_complete()
receive_register_extract(); receive_register_extract();
data = get_received_char(); data = get_received_char();
if (data > 0x7f) if (data != 0x00)
{
if (data > 0x80)
{ {
data &= ~0x80; data &= ~0x80;
LOGDATA("Retransmission of %x\n",data); LOGDATA("Retransmission of %x\n",data);
@ -102,9 +107,6 @@ void bacta_datalogger_device::rcv_complete()
return; return;
} }
} }
if (data != 0x00)
{
m_last_input = data; m_last_input = data;
switch (data) switch (data)
{ {