// license:BSD-3-Clause // copyright-holders:ElSemi #include "emu.h" #include "debugger.h" #include "se3208.h" /* SE3208 CPU Emulator by ElSemi For information about this CPU: www.adc.co.kr */ #define FLAG_C 0x0080 #define FLAG_V 0x0010 #define FLAG_S 0x0020 #define FLAG_Z 0x0040 #define FLAG_M 0x0200 #define FLAG_E 0x0800 #define FLAG_AUT 0x1000 #define FLAG_ENI 0x2000 #define FLAG_NMI 0x4000 #define CLRFLAG(f) m_SR&=~(f); #define SETFLAG(f) m_SR|=(f); #define TESTFLAG(f) (m_SR&(f)) #define EXTRACT(val,sbit,ebit) (((val)>>sbit)&((1<<((ebit-sbit)+1))-1)) #define SEX8(val) ((val&0x80)?(val|0xFFFFFF00):(val&0xFF)) #define SEX16(val) ((val&0x8000)?(val|0xFFFF0000):(val&0xFFFF)) #define ZEX8(val) ((val)&0xFF) #define ZEX16(val) ((val)&0xFFFF) #define SEX(bits,val) ((val)&(1<<(bits-1))?((val)|(~((1<; se3208_device::se3208_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : cpu_device(mconfig, SE3208, "SE3208", tag, owner, clock, "se3208", __FILE__) , m_program_config("program", ENDIANNESS_LITTLE, 32, 32, 0) { } UINT32 se3208_device::read_dword_unaligned(address_space &space, UINT32 address) { if (address & 3) return space.read_byte(address) | space.read_byte(address+1)<<8 | space.read_byte(address+2)<<16 | space.read_byte(address+3)<<24; else return space.read_dword(address); } UINT16 se3208_device::read_word_unaligned(address_space &space, UINT32 address) { if (address & 1) return space.read_byte(address) | space.read_byte(address+1)<<8; else return space.read_word(address); } void se3208_device::write_dword_unaligned(address_space &space, UINT32 address, UINT32 data) { if (address & 3) { space.write_byte(address, data & 0xff); space.write_byte(address+1, (data>>8)&0xff); space.write_byte(address+2, (data>>16)&0xff); space.write_byte(address+3, (data>>24)&0xff); } else { space.write_dword(address, data); } } void se3208_device::write_word_unaligned(address_space &space, UINT32 address, UINT16 data) { if (address & 1) { space.write_byte(address, data & 0xff); space.write_byte(address+1, (data>>8)&0xff); } else { space.write_word(address, data); } } UINT8 se3208_device::SE3208_Read8(UINT32 addr) { return m_program->read_byte(addr); } UINT16 se3208_device::SE3208_Read16(UINT32 addr) { return read_word_unaligned(*m_program,addr); } UINT32 se3208_device::SE3208_Read32(UINT32 addr) { return read_dword_unaligned(*m_program,addr); } void se3208_device::SE3208_Write8(UINT32 addr,UINT8 val) { m_program->write_byte(addr,val); } void se3208_device::SE3208_Write16(UINT32 addr,UINT16 val) { write_word_unaligned(*m_program,addr,val); } void se3208_device::SE3208_Write32(UINT32 addr,UINT32 val) { write_dword_unaligned(*m_program,addr,val); } UINT32 se3208_device::AddWithFlags(UINT32 a,UINT32 b) { UINT32 r=a+b; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if(((((a&b)|(~r&(a|b)))>>31))&1) SETFLAG(FLAG_C); if(((((a^r)&(b^r))>>31))&1) SETFLAG(FLAG_V); return r; } UINT32 se3208_device::SubWithFlags(UINT32 a,UINT32 b) //a-b { UINT32 r=a-b; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if((((b&r)|(~a&(b|r)))>>31)&1) SETFLAG(FLAG_C); if((((b^a)&(r^a))>>31)&1) SETFLAG(FLAG_V); return r; } UINT32 se3208_device::AdcWithFlags(UINT32 a,UINT32 b) { UINT32 C=(m_SR&FLAG_C)?1:0; UINT32 r=a+b+C; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if(((((a&b)|(~r&(a|b)))>>31))&1) SETFLAG(FLAG_C); if(((((a^r)&(b^r))>>31))&1) SETFLAG(FLAG_V); return r; } UINT32 se3208_device::SbcWithFlags(UINT32 a,UINT32 b) { UINT32 C=(m_SR&FLAG_C)?1:0; UINT32 r=a-b-C; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if((((b&r)|(~a&(b|r)))>>31)&1) SETFLAG(FLAG_C); if((((b^a)&(r^a))>>31)&1) SETFLAG(FLAG_V); return r; } UINT32 se3208_device::MulWithFlags(UINT32 a,UINT32 b) { INT64 r=(INT64) a*(INT64) b; CLRFLAG(FLAG_V); if(r>>32) SETFLAG(FLAG_V); return (UINT32) (r&0xffffffff); } UINT32 se3208_device::NegWithFlags(UINT32 a) { return SubWithFlags(0,a); } UINT32 se3208_device::AsrWithFlags(UINT32 Val, UINT8 By) { signed int v=(signed int) Val; v>>=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(By-1))) SETFLAG(FLAG_C); return (UINT32) v; } UINT32 se3208_device::LsrWithFlags(UINT32 Val, UINT8 By) { UINT32 v=Val; v>>=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(By-1))) SETFLAG(FLAG_C); return v; } UINT32 se3208_device::AslWithFlags(UINT32 Val, UINT8 By) { UINT32 v=Val; v<<=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(32-By))) SETFLAG(FLAG_C); return v; } INST(INVALIDOP) { //assert(false); } INST(LDB) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); m_R[SrcDst]=SEX8(Val); CLRFLAG(FLAG_E); } INST(STB) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write8(Index+Offset,ZEX8(m_R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDS) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; Offset<<=1; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); m_R[SrcDst]=SEX16(Val); CLRFLAG(FLAG_E); } INST(STS) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=1; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write16(Index+Offset,ZEX16(m_R[SrcDst])); CLRFLAG(FLAG_E); } INST(LD) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); m_R[SrcDst]=SE3208_Read32(Index+Offset); CLRFLAG(FLAG_E); } INST(ST) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write32(Index+Offset,m_R[SrcDst]); CLRFLAG(FLAG_E); } INST(LDBU) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); m_R[SrcDst]=ZEX8(Val); CLRFLAG(FLAG_E); } INST(LDSU) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; Offset<<=1; if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); m_R[SrcDst]=ZEX16(Val); CLRFLAG(FLAG_E); } INST(LERI) { UINT32 Imm=EXTRACT(Opcode,0,13); if(TESTFLAG(FLAG_E)) m_ER=(EXTRACT(m_ER,0,17)<<14)|Imm; else m_ER=SEX(14,Imm); SETFLAG(FLAG_E); } INST(LDSP) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); m_R[SrcDst]=SE3208_Read32(Index+Offset); CLRFLAG(FLAG_E); } INST(STSP) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write32(Index+Offset,m_R[SrcDst]); CLRFLAG(FLAG_E); } void se3208_device::PushVal(UINT32 Val) { m_SP-=4; SE3208_Write32(m_SP,Val); } UINT32 se3208_device::PopVal() { UINT32 Val=SE3208_Read32(m_SP); m_SP+=4; return Val; } INST(PUSH) { UINT32 Set=EXTRACT(Opcode,0,10); if(Set&(1<<10)) PushVal(m_PC); if(Set&(1<<9)) PushVal(m_SR); if(Set&(1<<8)) PushVal(m_ER); if(Set&(1<<7)) PushVal(m_R[7]); if(Set&(1<<6)) PushVal(m_R[6]); if(Set&(1<<5)) PushVal(m_R[5]); if(Set&(1<<4)) PushVal(m_R[4]); if(Set&(1<<3)) PushVal(m_R[3]); if(Set&(1<<2)) PushVal(m_R[2]); if(Set&(1<<1)) PushVal(m_R[1]); if(Set&(1<<0)) PushVal(m_R[0]); } INST(POP) { UINT32 Set=EXTRACT(Opcode,0,10); if(Set&(1<<0)) m_R[0]=PopVal(); if(Set&(1<<1)) m_R[1]=PopVal(); if(Set&(1<<2)) m_R[2]=PopVal(); if(Set&(1<<3)) m_R[3]=PopVal(); if(Set&(1<<4)) m_R[4]=PopVal(); if(Set&(1<<5)) m_R[5]=PopVal(); if(Set&(1<<6)) m_R[6]=PopVal(); if(Set&(1<<7)) m_R[7]=PopVal(); if(Set&(1<<8)) m_ER=PopVal(); if(Set&(1<<9)) m_SR=PopVal(); if(Set&(1<<10)) { m_PC=PopVal()-2; //PC automatically incresases by 2 } } INST(LEATOSP) { UINT32 Offset=EXTRACT(Opcode,9,12); UINT32 Index=EXTRACT(Opcode,3,5); if(Index) Index=m_R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); else Offset=SEX(4,Offset); m_SP=Index+Offset; CLRFLAG(FLAG_E); } INST(LEAFROMSP) { UINT32 Offset=EXTRACT(Opcode,9,12); UINT32 Index=EXTRACT(Opcode,3,5); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); else Offset=SEX(4,Offset); m_R[Index]=m_SP+Offset; CLRFLAG(FLAG_E); } INST(LEASPTOSP) { UINT32 Offset=EXTRACT(Opcode,0,7); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,23)<<8)|(Offset&0xff); else Offset=SEX(10,Offset); m_SP=m_SP+Offset; CLRFLAG(FLAG_E); } INST(MOV) { UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,9,11); m_R[Dst]=m_R[Src]; } INST(LDI) { UINT32 Dst=EXTRACT(Opcode,8,10); UINT32 Imm=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX8(Imm); m_R[Dst]=Imm; CLRFLAG(FLAG_E); } INST(LDBSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); m_R[SrcDst]=SEX8(Val); CLRFLAG(FLAG_E); } INST(STBSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write8(Index+Offset,ZEX8(m_R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDSSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); m_R[SrcDst]=SEX16(Val); CLRFLAG(FLAG_E); } INST(STSSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); SE3208_Write16(Index+Offset,ZEX16(m_R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDBUSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); m_R[SrcDst]=ZEX8(Val); CLRFLAG(FLAG_E); } INST(LDSUSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=m_SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); m_R[SrcDst]=ZEX16(Val); CLRFLAG(FLAG_E); } INST(ADDI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=AddWithFlags(m_R[Src],Imm); CLRFLAG(FLAG_E); } INST(SUBI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=SubWithFlags(m_R[Src],Imm); CLRFLAG(FLAG_E); } INST(ADCI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=AdcWithFlags(m_R[Src],Imm); CLRFLAG(FLAG_E); } INST(SBCI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=SbcWithFlags(m_R[Src],Imm); CLRFLAG(FLAG_E); } INST(ANDI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=m_R[Src]&Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(ORI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=m_R[Src]|Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(XORI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); m_R[Dst]=m_R[Src]^Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(CMPI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); SubWithFlags(m_R[Src],Imm); CLRFLAG(FLAG_E); } INST(TSTI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst; if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(m_ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Dst=m_R[Src]&Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Dst) SETFLAG(FLAG_Z); if(Dst&0x80000000) SETFLAG(FLAG_S); } INST(ADD) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=AddWithFlags(m_R[Src1],m_R[Src2]); } INST(SUB) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=SubWithFlags(m_R[Src1],m_R[Src2]); } INST(ADC) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=AdcWithFlags(m_R[Src1],m_R[Src2]); } INST(SBC) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=SbcWithFlags(m_R[Src1],m_R[Src2]); } INST(AND) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=m_R[Src1]&m_R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(OR) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=m_R[Src1]|m_R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(XOR) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=m_R[Src1]^m_R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(CMP) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); SubWithFlags(m_R[Src1],m_R[Src2]); } INST(TST) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst; Dst=m_R[Src1]&m_R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!Dst) SETFLAG(FLAG_Z); if(Dst&0x80000000) SETFLAG(FLAG_S); } INST(MULS) { UINT32 Src2=EXTRACT(Opcode,6,8); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); m_R[Dst]=MulWithFlags(m_R[Src1],m_R[Src2]); CLRFLAG(FLAG_E); } INST(NEG) { UINT32 Dst=EXTRACT(Opcode,9,11); UINT32 Src=EXTRACT(Opcode,3,5); m_R[Dst]=NegWithFlags(m_R[Src]); } INST(CALL) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; PushVal(m_PC+2); m_PC=m_PC+Offset; CLRFLAG(FLAG_E); } INST(JV) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_V)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JNV) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_V)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JC) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_C)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JNC) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_C)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JP) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_S)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JM) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_S)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JNZ) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_Z)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JZ) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JGE) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(S^V)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JLE) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z) || (S^V)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JHI) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(TESTFLAG(FLAG_Z) || TESTFLAG(FLAG_C))) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JLS) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z) || TESTFLAG(FLAG_C)) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JGT) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(TESTFLAG(FLAG_Z) || (S^V))) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JLT) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(S^V) { m_PC=m_PC+Offset; } CLRFLAG(FLAG_E); } INST(JMP) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(m_ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; m_PC=m_PC+Offset; CLRFLAG(FLAG_E); } INST(JR) { UINT32 Src=EXTRACT(Opcode,0,3); m_PC=m_R[Src]-2; CLRFLAG(FLAG_E); } INST(CALLR) { UINT32 Src=EXTRACT(Opcode,0,3); PushVal(m_PC+2); m_PC=m_R[Src]-2; CLRFLAG(FLAG_E); } INST(ASR) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) m_R[Dst]=AsrWithFlags(m_R[Dst],m_R[Cnt]&0x1f); else m_R[Dst]=AsrWithFlags(m_R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(LSR) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) m_R[Dst]=LsrWithFlags(m_R[Dst],m_R[Cnt]&0x1f); else m_R[Dst]=LsrWithFlags(m_R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(ASL) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) m_R[Dst]=AslWithFlags(m_R[Dst],m_R[Cnt]&0x1f); else m_R[Dst]=AslWithFlags(m_R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(EXTB) { UINT32 Dst=EXTRACT(Opcode,0,3); UINT32 Val=m_R[Dst]; m_R[Dst]=SEX8(Val); CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(EXTS) { UINT32 Dst=EXTRACT(Opcode,0,3); UINT32 Val=m_R[Dst]; m_R[Dst]=SEX16(Val); CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!m_R[Dst]) SETFLAG(FLAG_Z); if(m_R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(SET) { UINT32 Imm=EXTRACT(Opcode,0,3); m_SR|=(1<direct(); m_PC=SE3208_Read32(0); m_SR=0; m_IRQ=CLEAR_LINE; m_NMI=CLEAR_LINE; } void se3208_device::SE3208_NMI() { PushVal(m_PC); PushVal(m_SR); CLRFLAG(FLAG_NMI|FLAG_ENI|FLAG_E|FLAG_M); m_PC=SE3208_Read32(4); } void se3208_device::SE3208_Interrupt() { if(!TESTFLAG(FLAG_ENI)) return; PushVal(m_PC); PushVal(m_SR); CLRFLAG(FLAG_ENI|FLAG_E|FLAG_M); if(!(TESTFLAG(FLAG_AUT))) m_PC=SE3208_Read32(8); else m_PC=SE3208_Read32(4*standard_irq_callback(0)); } void se3208_device::execute_run() { do { UINT16 Opcode=m_direct->read_decrypted_word(m_PC, WORD_XOR_LE(0)); debugger_instruction_hook(this, m_PC); (this->*OpTable[Opcode])(Opcode); m_PPC=m_PC; m_PC+=2; //Check interrupts if(m_NMI==ASSERT_LINE) { SE3208_NMI(); m_NMI=CLEAR_LINE; } else if(m_IRQ==ASSERT_LINE && TESTFLAG(FLAG_ENI)) { SE3208_Interrupt(); } --(m_icount); } while(m_icount>0); } void se3208_device::device_start() { BuildTable(); m_program = &space(AS_PROGRAM); m_direct = &m_program->direct(); save_item(NAME(m_R)); save_item(NAME(m_PC)); save_item(NAME(m_SR)); save_item(NAME(m_SP)); save_item(NAME(m_ER)); save_item(NAME(m_IRQ)); save_item(NAME(m_NMI)); state_add( SE3208_PC, "PC", m_PC).formatstr("%08X"); state_add( SE3208_SR, "SR", m_SR).formatstr("%08X"); state_add( SE3208_ER, "ER", m_ER).formatstr("%08X"); state_add( SE3208_SP, "SP", m_SP).formatstr("%08X"); state_add( SE3208_R0, "R0", m_R[ 0]).formatstr("%08X"); state_add( SE3208_R1, "R1", m_R[ 1]).formatstr("%08X"); state_add( SE3208_R2, "R2", m_R[ 2]).formatstr("%08X"); state_add( SE3208_R3, "R3", m_R[ 3]).formatstr("%08X"); state_add( SE3208_R4, "R4", m_R[ 4]).formatstr("%08X"); state_add( SE3208_R5, "R5", m_R[ 5]).formatstr("%08X"); state_add( SE3208_R6, "R6", m_R[ 6]).formatstr("%08X"); state_add( SE3208_R7, "R7", m_R[ 7]).formatstr("%08X"); state_add( SE3208_PPC, "PPC", m_PPC).formatstr("%08X"); state_add(STATE_GENPC, "GENPC", m_PC).noshow(); state_add(STATE_GENSP, "GENSP", m_SP).noshow(); state_add(STATE_GENFLAGS, "GENFLAGS", m_SR).formatstr("%10s").noshow(); state_add(STATE_GENPCBASE, "GENPCBASE", m_PPC).noshow(); m_icountptr = &m_icount; } void se3208_device::state_string_export(const device_state_entry &entry, std::string &str) { switch (entry.index()) { case STATE_GENFLAGS: strprintf(str, "%c%c%c%c %c%c%c%c%c", m_SR&FLAG_C?'C':'.', m_SR&FLAG_V?'V':'.', m_SR&FLAG_S?'S':'.', m_SR&FLAG_Z?'Z':'.', m_SR&FLAG_M?'M':'.', m_SR&FLAG_E?'E':'.', m_SR&FLAG_AUT?'A':'.', m_SR&FLAG_ENI?'I':'.', m_SR&FLAG_NMI?'N':'.' ); break; } } void se3208_device::execute_set_input( int line, int state ) { if(line==INPUT_LINE_NMI) //NMI m_NMI=state; else m_IRQ=state; } offs_t se3208_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options) { extern CPU_DISASSEMBLE( se3208 ); return CPU_DISASSEMBLE_NAME(se3208)(this, buffer, pc, oprom, opram, options); }