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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/*******************************************************************
Toshiba TLCS-900 emulation
TODO:
- implement the remaining internal mcu features (serial transfer, etc)
- add support for 900 minimum and normal modes
*******************************************************************/
#include "emu.h"
#include "tlcs900.h"
#include "dasm900.h"
tlcs900_device::tlcs900_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
cpu_device(mconfig, type, tag, owner, clock),
m_am8_16(0),
m_mnemonic_80(s_mnemonic_80),
m_mnemonic_88(s_mnemonic_88),
m_mnemonic_90(s_mnemonic_90),
m_mnemonic_98(s_mnemonic_98),
m_mnemonic_a0(s_mnemonic_a0),
m_mnemonic_b0(s_mnemonic_b0),
m_mnemonic_b8(s_mnemonic_b8),
m_mnemonic_c0(s_mnemonic_c0),
m_mnemonic_c8(s_mnemonic_c8),
m_mnemonic_d0(s_mnemonic_d0),
m_mnemonic_d8(s_mnemonic_d8),
m_mnemonic_e0(s_mnemonic_e0),
m_mnemonic_e8(s_mnemonic_e8),
m_mnemonic_f0(s_mnemonic_f0),
m_mnemonic(s_mnemonic)
{
}
tlcs900h_device::tlcs900h_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
tlcs900_device(mconfig, type, tag, owner, clock)
{
m_mnemonic_80 = s_mnemonic_80;
m_mnemonic_88 = s_mnemonic_88;
m_mnemonic_90 = s_mnemonic_90;
m_mnemonic_98 = s_mnemonic_98;
m_mnemonic_a0 = s_mnemonic_a0;
m_mnemonic_b0 = s_mnemonic_b0;
m_mnemonic_b8 = s_mnemonic_b8;
m_mnemonic_c0 = s_mnemonic_c0;
m_mnemonic_c8 = s_mnemonic_c8;
m_mnemonic_d0 = s_mnemonic_d0;
m_mnemonic_d8 = s_mnemonic_d8;
m_mnemonic_e0 = s_mnemonic_e0;
m_mnemonic_e8 = s_mnemonic_e8;
m_mnemonic_f0 = s_mnemonic_f0;
m_mnemonic = s_mnemonic;
}
device_memory_interface::space_config_vector tlcs900_device::memory_space_config() const
{
return space_config_vector {
std::make_pair(AS_PROGRAM, &m_program_config)
};
}
std::unique_ptr<util::disasm_interface> tlcs900_device::create_disassembler()
{
return std::make_unique<tlcs900_disassembler>();
}
/* Flag defines */
#define FLAG_CF 0x01
#define FLAG_NF 0x02
#define FLAG_VF 0x04
#define FLAG_HF 0x10
#define FLAG_ZF 0x40
#define FLAG_SF 0x80
inline uint8_t tlcs900_device::RDOP()
{
uint8_t data;
if ( m_prefetch_clear )
{
for ( int i = 0; i < 4; i++ )
{
m_prefetch[ i ] = RDMEM( m_pc.d + i );
}
m_prefetch_index = 0;
m_prefetch_clear = false;
}
else
{
m_prefetch[ m_prefetch_index ] = RDMEM( m_pc.d + 3 );
m_prefetch_index = ( m_prefetch_index + 1 ) & 0x03;
}
data = m_prefetch[ m_prefetch_index ];
m_pc.d++;
return data;
}
void tlcs900_device::device_start()
{
m_program = &space( AS_PROGRAM );
m_pc.d = 0;
memset(m_xwa, 0x00, sizeof(m_xwa));
memset(m_xbc, 0x00, sizeof(m_xbc));
memset(m_xde, 0x00, sizeof(m_xde));
memset(m_xhl, 0x00, sizeof(m_xhl));
m_xix.d = 0;
m_xiy.d = 0;
m_xiz.d = 0;
m_xnsp.d = 0;
m_xssp.d = 0;
memset(m_dmas, 0x00, sizeof(m_dmas));
memset(m_dmad, 0x00, sizeof(m_dmad));
memset(m_dmac, 0x00, sizeof(m_dmac));
memset(m_dmam, 0x00, sizeof(m_dmam));
save_item( NAME(m_xwa) );
save_item( NAME(m_xbc) );
save_item( NAME(m_xde) );
save_item( NAME(m_xhl) );
save_item( NAME(m_xix) );
save_item( NAME(m_xiy) );
save_item( NAME(m_xiz) );
save_item( NAME(m_xssp) );
save_item( NAME(m_xnsp) );
save_item( NAME(m_pc) );
save_item( NAME(m_sr) );
save_item( NAME(m_f2) );
save_item( NAME(m_dmas) );
save_item( NAME(m_dmad) );
save_item( NAME(m_dmac) );
save_item( NAME(m_dmam) );
save_item( NAME(m_timer_pre) );
save_item( NAME(m_timer) );
save_item( NAME(m_timer_change) );
save_item( NAME(m_level) );
save_item( NAME(m_check_irqs) );
save_item( NAME(m_ad_cycles_left) );
save_item( NAME(m_nmi_state) );
save_item( NAME(m_prefetch_clear) );
save_item( NAME(m_prefetch_index) );
save_item( NAME(m_prefetch) );
save_item( NAME(m_halted) );
save_item( NAME(m_regbank) );
state_add( TLCS900_PC, "PC", m_pc.d ).formatstr("%08X");
state_add( TLCS900_XWA0, "XWA0", m_xwa[0].d ).formatstr("%08X");
state_add( TLCS900_XBC0, "XBC0", m_xbc[0].d ).formatstr("%08X");
state_add( TLCS900_XDE0, "XDE0", m_xde[0].d ).formatstr("%08X");
state_add( TLCS900_XHL0, "XHL0", m_xhl[0].d ).formatstr("%08X");
state_add( TLCS900_XWA1, "XWA1", m_xwa[1].d ).formatstr("%08X");
state_add( TLCS900_XBC1, "XBC1", m_xbc[1].d ).formatstr("%08X");
state_add( TLCS900_XDE1, "XDE1", m_xde[1].d ).formatstr("%08X");
state_add( TLCS900_XHL1, "XHL1", m_xhl[1].d ).formatstr("%08X");
state_add( TLCS900_XWA2, "XWA2", m_xwa[2].d ).formatstr("%08X");
state_add( TLCS900_XBC2, "XBC2", m_xbc[2].d ).formatstr("%08X");
state_add( TLCS900_XDE2, "XDE2", m_xde[2].d ).formatstr("%08X");
state_add( TLCS900_XHL2, "XHL2", m_xhl[2].d ).formatstr("%08X");
state_add( TLCS900_XWA3, "XWA3", m_xwa[3].d ).formatstr("%08X");
state_add( TLCS900_XBC3, "XBC3", m_xbc[3].d ).formatstr("%08X");
state_add( TLCS900_XDE3, "XDE3", m_xde[3].d ).formatstr("%08X");
state_add( TLCS900_XHL3, "XHL3", m_xhl[3].d ).formatstr("%08X");
state_add( TLCS900_XIX, "XIX", m_xix.d ).formatstr("%08X");
state_add( TLCS900_XIY, "XIY", m_xiy.d ).formatstr("%08X");
state_add( TLCS900_XIZ, "XIZ", m_xiz.d ).formatstr("%08X");
state_add( TLCS900_XNSP, "XNSP", m_xnsp.d ).formatstr("%08X");
state_add( TLCS900_XSSP, "XSSP", m_xssp.d ).formatstr("%08X");
state_add( TLCS900_DMAS0, "DMAS0", m_dmas[0].d ).formatstr("%08X");
state_add( TLCS900_DMAD0, "DMAD0", m_dmad[0].d ).formatstr("%08X");
state_add( TLCS900_DMAC0, "DMAC0", m_dmac[0].w.l ).formatstr("%04X");
state_add( TLCS900_DMAM0, "DMAM0", m_dmam[0].b.l ).formatstr("%02X");
state_add( TLCS900_DMAS1, "DMAS1", m_dmas[1].d ).formatstr("%08X");
state_add( TLCS900_DMAD1, "DMAD1", m_dmad[1].d ).formatstr("%08X");
state_add( TLCS900_DMAC1, "DMAC1", m_dmac[1].w.l ).formatstr("%04X");
state_add( TLCS900_DMAM1, "DMAM1", m_dmam[1].b.l ).formatstr("%02X");
state_add( TLCS900_DMAS2, "DMAS2", m_dmas[2].d ).formatstr("%08X");
state_add( TLCS900_DMAD2, "DMAD2", m_dmad[2].d ).formatstr("%08X");
state_add( TLCS900_DMAC2, "DMAC2", m_dmac[2].w.l ).formatstr("%04X");
state_add( TLCS900_DMAM2, "DMAM2", m_dmam[2].b.l ).formatstr("%02X");
state_add( TLCS900_DMAS3, "DMAS3", m_dmas[3].d ).formatstr("%08X");
state_add( TLCS900_DMAD3, "DMAD3", m_dmad[3].d ).formatstr("%08X");
state_add( TLCS900_DMAC3, "DMAC3", m_dmac[3].w.l ).formatstr("%04X");
state_add( TLCS900_DMAM3, "DMAM3", m_dmam[3].b.l ).formatstr("%02X");
state_add( STATE_GENPC, "GENPC", m_pc.d ).noshow();
state_add( STATE_GENPCBASE, "CURPC", m_pc.d ).noshow();
state_add( STATE_GENFLAGS, "GENFLAGS", m_sr.w.l ).formatstr("%12s").noshow();
set_icountptr(m_icount);
}
void tlcs900_device::device_reset()
{
m_pc.d = 0x00008000;
/* system mode, iff set to 111, min mode, register bank 0 */
m_sr.d = 0xF000;
m_regbank = 0;
m_xssp.d = 0x0100;
m_halted = 0;
m_check_irqs = 0;
m_prefetch_clear = true;
}
void tlcs900h_device::device_reset()
{
m_pc.b.l = RDMEM( 0xFFFF00 );
m_pc.b.h = RDMEM( 0xFFFF01 );
m_pc.b.h2 = RDMEM( 0xFFFF02 );
m_pc.b.h3 = 0;
/* system mode, iff set to 111, max mode, register bank 0 */
m_sr.d = 0xF800;
m_regbank = 0;
m_xssp.d = 0x0100;
m_halted = 0;
m_check_irqs = 0;
m_prefetch_clear = true;
}
void tlcs900_device::state_string_export(const device_state_entry &entry, std::string &str) const
{
switch (entry.index())
{
case STATE_GENFLAGS:
str = string_format("%c%d%c%d%c%c%c%c%c%c%c%c",
m_sr.w.l & 0x8000 ? 'S' : 'U',
( m_sr.w.l & 0x7000 ) >> 12,
m_sr.w.l & 0x0800 ? 'M' : 'N',
( m_sr.w.l & 0x0700 ) >> 8,
m_sr.w.l & 0x0080 ? 'S' : '.',
m_sr.w.l & 0x0040 ? 'Z' : '.',
m_sr.w.l & 0x0020 ? '1' : '.',
m_sr.w.l & 0x0010 ? 'H' : '.',
m_sr.w.l & 0x0008 ? '1' : '.',
m_sr.w.l & 0x0004 ? 'V' : '.',
m_sr.w.l & 0x0002 ? 'N' : '.',
m_sr.w.l & 0x0001 ? 'C' : '.' );
break;
}
}
#include "900tbl.hxx"
#include "900htbl.hxx"
void tlcs900_device::execute_run()
{
do
{
const tlcs900inst *inst;
m_cycles = 0;
if ( m_check_irqs )
{
tlcs900_check_irqs();
m_check_irqs = 0;
}
debugger_instruction_hook( m_pc.d );
if ( m_halted )
{
m_cycles += 8;
}
else
{
m_op = RDOP();
inst = &m_mnemonic[m_op];
prepare_operands( inst );
/* Execute the instruction */
(this->*inst->opfunc)();
m_cycles += inst->cycles;
}
tlcs900_handle_ad();
tlcs900_handle_timers();
tlcs900_check_hdma();
m_icount -= m_cycles;
} while ( m_icount > 0 );
}
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