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// license:BSD-3-Clause
// copyright-holders:Angelo Salese, ElSemi
/*****************************************************************************
*
* MB86235 "TGPx4" (c) Fujitsu
*
* Written by Angelo Salese & ElSemi
*
* TODO:
* - Everything!
*
*****************************************************************************/
#include "emu.h"
#include "debugger.h"
#include "mb86235.h"
const device_type MB86235 = &device_creator<mb86235_cpu_device>;
#define mb86235_readop(A) m_program->read_dword(A)
#define mb86235_readmem(A) m_program->read_dword(A)
#define mb86235_writemem(A,B) m_program->write_dword((A),B)
/***********************************
* illegal opcodes
***********************************/
void mb86235_cpu_device::mb86235_illegal()
{
//logerror("mb86235 illegal opcode at 0x%04x\n", m_pc);
m_icount -= 1;
}
/* Execute cycles */
void mb86235_cpu_device::execute_run()
{
UINT32 opcode;
do
{
debugger_instruction_hook(this, m_pc);
opcode = mb86235_readop(m_pc);
//m_pc++;
switch( opcode )
{
default:
mb86235_illegal();
break;
}
} while( m_icount > 0 );
}
void mb86235_cpu_device::device_start()
{
m_program = &space(AS_PROGRAM);
save_item(NAME(m_pc));
save_item(NAME(m_flags));
// Register state for debugger
//state_add( CP1610_R0, "PC", m_pc ).formatstr("%02X");
state_add( STATE_GENPC, "curpc", m_pc ).noshow();
state_add( STATE_GENFLAGS, "GENFLAGS", m_flags ).noshow();
m_icountptr = &m_icount;
}
void mb86235_cpu_device::device_reset()
{
}
#if 0
void mb86235_cpu_device::execute_set_input(int irqline, int state)
{
switch(irqline)
{
case MB86235_INT_INTRM:
m_intrm_pending = (state == ASSERT_LINE);
m_intrm_state = state;
break;
case MB86235_RESET:
if (state == ASSERT_LINE)
m_reset_pending = 1;
m_reset_state = state;
break;
case MB86235_INT_INTR:
if (state == ASSERT_LINE)
m_intr_pending = 1;
m_intr_state = state;
break;
}
}
#endif
mb86235_cpu_device::mb86235_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: cpu_device(mconfig, MB86235, "MB86235", tag, owner, clock, "mb86235", __FILE__)
, m_program_config("program", ENDIANNESS_LITTLE, 32, 32, -2)
{
}
void mb86235_cpu_device::state_string_export(const device_state_entry &entry, std::string &str)
{
switch (entry.index())
{
case STATE_GENFLAGS:
strprintf(str, "%c%c%c%c",
m_flags & 0x80 ? 'S':'.',
m_flags & 0x40 ? 'Z':'.',
m_flags & 0x20 ? 'V':'.',
m_flags & 0x10 ? 'C':'.');
break;
}
}
offs_t mb86235_cpu_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
{
extern CPU_DISASSEMBLE( mb86235 );
return CPU_DISASSEMBLE_NAME(mb86235)(this, buffer, pc, oprom, opram, options);
}
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