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sdlc.cpp: WIP added bitbanger device

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This commit is contained in:
Joakim Larsson Edstrom 2019-10-19 22:49:33 +02:00
parent f28a4eb860
commit eef80ce011
2 changed files with 52 additions and 7 deletions
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37
src/devices/machine/sdlc.cpp
View File

@ -13,7 +13,7 @@
#define LOG_LINESTATE (1U << 3)
#define LOG_FRAMING (1U << 4)
//#define VERBOSE (LOG_GENERAL | LOG_RXBIT | LOG_RXFLAG | LOG_LINESTATE | LOG_FRAMING)
//#define VERBOSE (LOG_GENERAL | LOG_RXFLAG | LOG_LINESTATE | LOG_FRAMING)
#include "logmacro.h"
#define LOGRXBIT(...) LOGMASKED(LOG_RXBIT, __VA_ARGS__)
@ -22,7 +22,8 @@
#define LOGFRAMING(...) LOGMASKED(LOG_FRAMING, __VA_ARGS__)
DEFINE_DEVICE_TYPE(SDLC_LOGGER, sdlc_logger_device, "sdlc_logger", "SDLC/HDLC logger")
DEFINE_DEVICE_TYPE(SDLC_LOGGER, sdlc_logger_device, "sdlc_logger", "SDLC/HDLC logger")
DEFINE_DEVICE_TYPE(SDLC_BITBANGER, sdlc_bitbanger_device, "sdlc_bitbanger", "SDLC/HDLC bitbanger")
constexpr std::uint16_t device_sdlc_consumer_interface::POLY_SDLC;
@ -125,9 +126,8 @@ void device_sdlc_consumer_interface::rx_reset()
m_frame_check = 0xffffU;
}
sdlc_logger_device::sdlc_logger_device(machine_config const &mconfig, char const *tag, device_t *owner, std::uint32_t clock) :
device_t(mconfig, SDLC_LOGGER, tag, owner, clock),
sdlc_logger_device::sdlc_logger_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, std::uint32_t clock) :
device_t(mconfig, type, tag, owner, clock),
device_sdlc_consumer_interface(mconfig, *this),
m_data_nrzi(0U),
m_clock_active(1U),
@ -140,6 +140,11 @@ sdlc_logger_device::sdlc_logger_device(machine_config const &mconfig, char const
{
}
sdlc_logger_device::sdlc_logger_device(machine_config const &mconfig, char const *tag, device_t *owner, std::uint32_t clock) :
sdlc_logger_device(mconfig, SDLC_LOGGER, tag, owner, clock)
{
}
WRITE_LINE_MEMBER(sdlc_logger_device::clock_w)
{
if (bool(state) != bool(m_current_clock))
@ -222,7 +227,7 @@ void sdlc_logger_device::shift_residual_bits()
}
}
void sdlc_logger_device::log_frame(bool partial) const
void sdlc_logger_device::log_frame(bool partial)
{
if (m_frame_bits)
{
@ -300,3 +305,23 @@ void sdlc_logger_device::log_frame(bool partial) const
logerror("%s\n", msg.str());
}
}
sdlc_bitbanger_device::sdlc_bitbanger_device(machine_config const &mconfig, char const *tag, device_t *owner, std::uint32_t clock) : sdlc_logger_device(mconfig, SDLC_BITBANGER, tag, owner, clock)
{
}
void sdlc_bitbanger_device::log_frame(bool partial)
{
std::uint32_t const frame_bytes(get_frame_bits() >> 3);
if (frame_bytes)
{
std::ostringstream msg;
std::uint32_t const residual_bits(get_frame_bits() & 0x0007U);
for (std::uint32_t i = 0U; (frame_bytes > i) && (get_buffer_bytes() > i); ++i)
util::stream_format(msg, (i & 0x000fU) ? "-%02X" : "\n %02X", get_buffer()[i]);
if (residual_bits && (get_buffer_bits() >= get_frame_bits()))
util::stream_format(msg, (residual_bits > 4) ? "%s %02X&%02X" : "%s %01X&%01X", (frame_bytes & 0x000fU) ? "" : "\n ", get_buffer()[frame_bytes], (1U << residual_bits) - 1);
logerror("%s\n", msg.str());
}
}

22
src/devices/machine/sdlc.h
View File

@ -65,11 +65,18 @@ public:
DECLARE_WRITE_LINE_MEMBER(clock_active) { m_clock_active = state ? 1U : 0U; }
protected:
sdlc_logger_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, std::uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
using device_t::logerror;
std::uint32_t get_frame_bits(){ return m_frame_bits; }
std::size_t get_buffer_bytes(){ return BUFFER_BYTES; }
std::size_t get_buffer_bits(){ return BUFFER_BITS; }
std::uint8_t *get_buffer(){ return (std::uint8_t *) (&m_buffer[0]); }
private:
enum : std::size_t
{
@ -83,7 +90,7 @@ private:
virtual void data_bit(bool value) override;
void shift_residual_bits();
void log_frame(bool partial) const;
virtual void log_frame(bool partial);
std::uint8_t m_data_nrzi;
std::uint8_t m_clock_active;
@ -98,6 +105,19 @@ private:
};
class sdlc_bitbanger_device : public sdlc_logger_device
{
public:
sdlc_bitbanger_device(machine_config const &mconfig, char const *tag, device_t *owner, std::uint32_t clock);
protected:
private:
virtual void log_frame(bool partial) override;
};
DECLARE_DEVICE_TYPE(SDLC_LOGGER, sdlc_logger_device)
DECLARE_DEVICE_TYPE(SDLC_BITBANGER, sdlc_bitbanger_device)
#endif // MAME_MACHINE_SDLC_H