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Diffstat (limited to 'src/devices/bus/isa/finalchs.c')
-rw-r--r--src/devices/bus/isa/finalchs.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/devices/bus/isa/finalchs.c b/src/devices/bus/isa/finalchs.c
new file mode 100644
index 00000000000..212a05cad87
--- /dev/null
+++ b/src/devices/bus/isa/finalchs.c
@@ -0,0 +1,127 @@
+// license:BSD-3-Clause
+// copyright-holders:Jonathan Gevaryahu
+/***************************************************************************
+
+ Final Chess Card by TASC
+
+ TODO:
+ - skeleton, just boots the CPU
+
+***************************************************************************/
+
+#include "emu.h"
+#include "finalchs.h"
+#include "cpu/m6502/m65c02.h"
+
+WRITE8_MEMBER( isa8_finalchs_device::io7ff8_write )
+{
+ m_FCH_latch_data = data;
+}
+
+READ8_MEMBER( isa8_finalchs_device::io7ff8_read )
+{
+ static unsigned char table[] = { 0xff, 0xfd, 0xfe };
+ static int i = -1;
+ i++;
+ if (i == 3) i = 0;
+ return table[i]; // exercise the NMI handler for now with known commands
+}
+
+READ8_MEMBER( isa8_finalchs_device::io6000_read )
+{
+ return 0x55;
+}
+
+WRITE8_MEMBER( isa8_finalchs_device::io6000_write )
+{
+ m_FCH_latch_data = data;
+}
+
+static ADDRESS_MAP_START(finalchs_mem , AS_PROGRAM, 8, isa8_finalchs_device)
+ AM_RANGE( 0x0000, 0x1fff ) AM_RAM
+ AM_RANGE( 0x7ff8, 0x7ff8 ) AM_READ(io7ff8_read)
+ AM_RANGE( 0x7ff8, 0x7ff8 ) AM_WRITE(io7ff8_write)
+ AM_RANGE( 0x6000, 0x6000 ) AM_READ(io6000_read)
+ AM_RANGE( 0x6000, 0x6000 ) AM_WRITE(io6000_write)
+ AM_RANGE( 0x8000, 0xffff ) AM_ROM
+ADDRESS_MAP_END
+
+static MACHINE_CONFIG_FRAGMENT( finalchs_config )
+ MCFG_CPU_ADD("maincpu",M65C02,5000000)
+ MCFG_CPU_PROGRAM_MAP(finalchs_mem)
+MACHINE_CONFIG_END
+
+ROM_START(finalchs)
+ ROM_REGION(0x10000,"maincpu",0)
+ ROM_LOAD("finalchs.bin", 0x8000, 0x8000, CRC(c8e72dff) SHA1(f422b19a806cef4fadd580caefaaf8c32b644098))
+ROM_END
+
+READ8_MEMBER( isa8_finalchs_device::finalchs_r )
+{
+ return 0;
+}
+
+WRITE8_MEMBER( isa8_finalchs_device::finalchs_w )
+{
+}
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type ISA8_FINALCHS = &device_creator<isa8_finalchs_device>;
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor isa8_finalchs_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( finalchs_config );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// isa8_finalchs_device - constructor
+//-------------------------------------------------
+
+isa8_finalchs_device::isa8_finalchs_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, ISA8_FINALCHS, "Final Chess Card", tag, owner, clock, "finalchs", __FILE__),
+ device_isa8_card_interface( mconfig, *this )
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void isa8_finalchs_device::device_start()
+{
+ set_isa_device();
+ //the included setup program allows any port from 0x100 to 0x1F0 to be selected, at increments of 0x10
+ //picked the following at random until we get dips hooked up
+ m_isa->install_device(0x160, 0x0161, 0, 0, read8_delegate(FUNC(isa8_finalchs_device::finalchs_r), this), write8_delegate(FUNC(isa8_finalchs_device::finalchs_w), this));
+// timer_pulse(machine, ATTOTIME_IN_HZ(1), NULL, 0, cause_M6502_irq);
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void isa8_finalchs_device::device_reset()
+{
+ m_FCH_latch_data = 0;
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *isa8_finalchs_device::device_rom_region() const
+{
+ return ROM_NAME( finalchs );
+}