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Diffstat (limited to 'src/devices/bus/ti8x/bitsocket.cpp')
-rw-r--r--src/devices/bus/ti8x/bitsocket.cpp44
1 files changed, 41 insertions, 3 deletions
diff --git a/src/devices/bus/ti8x/bitsocket.cpp b/src/devices/bus/ti8x/bitsocket.cpp
index 4168c09af91..46c832ffecd 100644
--- a/src/devices/bus/ti8x/bitsocket.cpp
+++ b/src/devices/bus/ti8x/bitsocket.cpp
@@ -1,14 +1,49 @@
// license:BSD-3-Clause
// copyright-holders:Vas Crabb
+/*
+ Sends raw assert/release signals over a socket. Seriously limits
+ transfer rates and probably won't work if there's much latency, but it
+ allows communication between instances using non-standard protocols.
+
+ bit 0 = data
+ bit 1 = set tip
+ bit 2 = set ring
+ */
#include "emu.h"
#include "bitsocket.h"
+#include "imagedev/bitbngr.h"
+
+
+namespace {
+
+class bit_socket_device
+ : public device_t
+ , public device_ti8x_link_port_interface
+{
+public:
+ bit_socket_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock);
+
+protected:
+ enum
+ {
+ TIMER_ID_POLL = 1
+ };
+
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual void device_start() override;
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
-DEFINE_DEVICE_TYPE(TI8X_BIT_SOCKET, bus::ti8x::bit_socket_device, "ti8x_bitsock", "TI-8x Bit Socket")
+ virtual DECLARE_WRITE_LINE_MEMBER(input_tip) override;
+ virtual DECLARE_WRITE_LINE_MEMBER(input_ring) override;
+private:
+ required_device<bitbanger_device> m_stream;
+ emu_timer * m_poll_timer;
+ bool m_tip_in, m_ring_in;
+};
-namespace bus::ti8x {
bit_socket_device::bit_socket_device(
machine_config const &mconfig,
@@ -78,4 +113,7 @@ WRITE_LINE_MEMBER(bit_socket_device::input_ring)
m_stream->output((m_ring_in ? 0x01 : 0x00) | 0x04);
}
-} // namespace bus::ti8x
+} // anonymous namespace
+
+
+DEFINE_DEVICE_TYPE_PRIVATE(TI8X_BIT_SOCKET, device_ti8x_link_port_interface, bit_socket_device, "ti8x_bitsock", "TI-8x Bit Socket")