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-rw-r--r--src/devices/bus/comx35/thermal.cpp127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/devices/bus/comx35/thermal.cpp b/src/devices/bus/comx35/thermal.cpp
new file mode 100644
index 00000000000..e74b62978d6
--- /dev/null
+++ b/src/devices/bus/comx35/thermal.cpp
@@ -0,0 +1,127 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ COMX-35 Thermal Printer Card emulation
+
+**********************************************************************/
+
+#include "thermal.h"
+
+
+
+//**************************************************************************
+// MACROS/CONSTANTS
+//**************************************************************************
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type COMX_THM = &device_creator<comx_thm_device>;
+
+
+//-------------------------------------------------
+// ROM( comx_thm )
+//-------------------------------------------------
+
+ROM_START( comx_thm )
+ ROM_REGION( 0x2000, "c000", 0 )
+ ROM_LOAD( "thermal.bin", 0x0000, 0x1000, CRC(41a72ba8) SHA1(3a8760c78bd8c7bec2dbf26657b930c9a6814803) )
+ROM_END
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *comx_thm_device::device_rom_region() const
+{
+ return ROM_NAME( comx_thm );
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// comx_thm_device - constructor
+//-------------------------------------------------
+
+comx_thm_device::comx_thm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, COMX_THM, "COMX-35 Thermal Printer Card", tag, owner, clock, "comx_thm", __FILE__),
+ device_comx_expansion_card_interface(mconfig, *this),
+ m_rom(*this, "c000")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void comx_thm_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void comx_thm_device::device_reset()
+{
+}
+
+
+//-------------------------------------------------
+// comx_mrd_r - memory read
+//-------------------------------------------------
+
+UINT8 comx_thm_device::comx_mrd_r(address_space &space, offs_t offset, int *extrom)
+{
+ UINT8 data = 0;
+
+ if (offset >= 0xc000 && offset < 0xd000)
+ {
+ data = m_rom->base()[offset & 0xfff];
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// comx_io_r - I/O read
+//-------------------------------------------------
+
+UINT8 comx_thm_device::comx_io_r(address_space &space, offs_t offset)
+{
+ /*
+ INP 2 is used for the printer status, where:
+ b0=1: Printer Not Ready
+ b1=1: Energizing Head
+ b2=1: Head At Position 0
+ */
+
+ return 0;
+}
+
+
+//-------------------------------------------------
+// comx_io_w - I/O write
+//-------------------------------------------------
+
+void comx_thm_device::comx_io_w(address_space &space, offs_t offset, UINT8 data)
+{
+ /*
+ OUT 2 is used to control the thermal printer where:
+ Q = 0, b0-7: Pixel 1 to 8
+ Q = 1, b7: Pixel 9 (if b0-6=#21)
+ Q = 1, b3=1: Move head right
+ Q = 1, b0-7=#12: Move head left
+ */
+}