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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
tms57kdec.c
TMS57002 "DASP" emulator.
***************************************************************************/
#include "emu.h"
#include "debugger.h"
#include "tms57002.h"
inline int tms57002_device::xmode(uint32_t opcode, char type, cstate *cs)
{
if(((opcode & 0x400) && (type == 'c')) || (!(opcode & 0x400) && (type == 'd'))) {
if(opcode & 0x100)
return 0;
else if(opcode & 0x80)
cs->inc |= type == 'c' ? INC_CA : INC_ID;
return 1;
}
else if(opcode & 0x200)
cs->inc |= type == 'c' ? INC_CA : INC_ID;
return 1;
}
inline int tms57002_device::sfao(uint32_t st1)
{
return st1 & ST1_SFAO ? 1 : 0;
}
inline int tms57002_device::dbp(uint32_t st1)
{
return st1 & ST1_DBP ? 1 : 0;
}
inline int tms57002_device::crm(uint32_t st1)
{
int crm = (st1 & ST1_CRM) >> ST1_CRM_SHIFT;
return crm <= 2 ? crm : 0;
}
inline int tms57002_device::sfai(uint32_t st1)
{
return st1 & ST1_SFAI ? 1 : 0;
}
inline int tms57002_device::sfmo(uint32_t st1)
{
return (st1 & ST1_SFMO) >> ST1_SFMO_SHIFT;
}
inline int tms57002_device::rnd(uint32_t st1)
{
int rnd = (st1 & ST1_RND) >> ST1_RND_SHIFT;
return rnd <= 4 ? rnd : 0;
}
inline int tms57002_device::movm(uint32_t st1)
{
return st1 & ST1_MOVM ? 1 : 0;
}
inline int tms57002_device::sfma(uint32_t st1)
{
return (st1 & ST1_SFMA) >> ST1_SFMA_SHIFT;
}
void tms57002_device::decode_error(uint32_t opcode)
{
uint8_t opr[3];
if(unsupported_inst_warning)
return;
unsupported_inst_warning = 1;
opr[0] = opcode;
opr[1] = opcode >> 8;
opr[2] = opcode >> 16;
std::stringstream stream;
disasm_disassemble(stream, pc, opr, opr, 0);
popmessage("tms57002: %s - Contact Mamedev", stream.str());
}
void tms57002_device::decode_cat1(uint32_t opcode, unsigned short *op, cstate *cs)
{
switch(opcode >> 18) {
case 0x00: // nop
break;
#define CDEC1
#include "cpu/tms57002/tms57002.hxx"
#undef CDEC1
default:
decode_error(opcode);
break;
}
}
void tms57002_device::decode_cat2_pre(uint32_t opcode, unsigned short *op, cstate *cs)
{
switch((opcode >> 11) & 0x7f) {
case 0x00: // nop
break;
#define CDEC2A
#include "cpu/tms57002/tms57002.hxx"
#undef CDEC2A
default:
decode_error(opcode);
break;
}
}
void tms57002_device::decode_cat2_post(uint32_t opcode, unsigned short *op, cstate *cs)
{
switch((opcode >> 11) & 0x7f) {
case 0x00: // nop
break;
#define CDEC2B
#include "cpu/tms57002/tms57002.hxx"
#undef CDEC2B
default:
decode_error(opcode);
break;
}
}
void tms57002_device::decode_cat3(uint32_t opcode, unsigned short *op, cstate *cs)
{
switch((opcode >> 11) & 0x7f) {
case 0x00: // nop
break;
#define CDEC3
#include "cpu/tms57002/tms57002.hxx"
#undef CDEC3
default:
decode_error(opcode);
break;
}
}
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