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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#include "emu.h"
#include "m68008.h"
#include "m68kdasm.h"
DEFINE_DEVICE_TYPE(M68008, m68008_device, "m68008", "Motorola MC68008") // 48-pin plastic or ceramic DIP
DEFINE_DEVICE_TYPE(M68008FN, m68008fn_device, "m68008fn", "Motorola MC68008FN") // 52-pin PLCC
std::unique_ptr<util::disasm_interface> m68008_device::create_disassembler()
{
return std::make_unique<m68k_disassembler>(m68k_disassembler::TYPE_68008);
}
std::unique_ptr<util::disasm_interface> m68008fn_device::create_disassembler()
{
return std::make_unique<m68k_disassembler>(m68k_disassembler::TYPE_68008);
}
m68008_device::m68008_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: m68008_device(mconfig, M68008, tag, owner, clock)
{
}
m68008_device::m68008_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
: m68000_device(mconfig, type, tag, owner, clock),
m_mmu8(nullptr)
{
m_cpu_space_config.m_addr_width = m_cpu_space_config.m_logaddr_width = 20;
m_program_config.m_addr_width = m_program_config.m_logaddr_width = 20;
m_opcodes_config.m_addr_width = m_opcodes_config.m_logaddr_width = 20;
m_uprogram_config.m_addr_width = m_uprogram_config.m_logaddr_width = 20;
m_uopcodes_config.m_addr_width = m_uopcodes_config.m_logaddr_width = 20;
m_cpu_space_config.m_data_width = 8;
m_program_config.m_data_width = 8;
m_opcodes_config.m_data_width = 8;
m_uprogram_config.m_data_width = 8;
m_uopcodes_config.m_data_width = 8;
m_disable_specifics = true;
}
void m68008_device::device_start()
{
m68000_device::device_start();
m_s_program->specific(m_r_program8);
m_s_opcodes->specific(m_r_opcodes8);
m_s_uprogram->specific(m_r_uprogram8);
m_s_uopcodes->specific(m_r_uopcodes8);
m_s_cpu_space->specific(m_cpu_space8);
// Theoretically UB, in practice works, the alternative (putting
// everything in m68000_device) is annoying
if(m_mmu8) {
m_handlers_f = reinterpret_cast<const handler *>(s_handlers_if8);
m_handlers_p = reinterpret_cast<const handler *>(s_handlers_ip8);
} else {
m_handlers_f = reinterpret_cast<const handler *>(s_handlers_df8);
m_handlers_p = reinterpret_cast<const handler *>(s_handlers_dp8);
}
}
void m68008_device::update_user_super()
{
if(m_sr & SR_S) {
m_sp = 16;
m_program8 = m_r_program8;
m_opcodes8 = m_r_opcodes8;
if(m_mmu8)
m_mmu8->set_super(true);
} else {
m_sp = 15;
m_program8 = m_r_uprogram8;
m_opcodes8 = m_r_uopcodes8;
if(m_mmu8)
m_mmu8->set_super(false);
}
}
m68008fn_device::m68008fn_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: m68008_device(mconfig, M68008FN, tag, owner, clock)
{
m_cpu_space_config.m_addr_width = m_cpu_space_config.m_logaddr_width = 22;
m_program_config.m_addr_width = m_program_config.m_logaddr_width = 22;
m_opcodes_config.m_addr_width = m_opcodes_config.m_logaddr_width = 22;
m_uprogram_config.m_addr_width = m_uprogram_config.m_logaddr_width = 22;
m_uopcodes_config.m_addr_width = m_uopcodes_config.m_logaddr_width = 22;
m_cpu_space_config.m_data_width = 8;
m_program_config.m_data_width = 8;
m_opcodes_config.m_data_width = 8;
m_uprogram_config.m_data_width = 8;
m_uopcodes_config.m_data_width = 8;
}
void m68008fn_device::device_start()
{
m68008_device::device_start();
}
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