// license:BSD-3-Clause // copyright-holders:Peter Trauner /* assumed res=left+right+c sbc is like adc with inverted carry and right side (decrement, compare the same) (like in the m6502 processors) */ uint8_t lh5801_cpu_device::lh5801_add_generic(int left, int right, int carry) { int res=left+right+carry; int v,c; m_t&=~(H|V|Z|C); if (!(res&0xff)) m_t|=Z; c=res&0x100; if (c) m_t|=C; if (((left&0xf)+(right&0xf)+carry)&0x10) m_t|=H; v=((left&0x7f)+(right&0x7f)+carry)&0x80; if ( (c&&!v)||(!c&&v) ) m_t|=V; return res; } uint16_t lh5801_cpu_device::lh5801_readop_word() { uint16_t r; r=m_cache->read_byte(P++)<<8; r|=m_cache->read_byte(P++); return r; } void lh5801_cpu_device::lh5801_adc(uint8_t data) { m_a=lh5801_add_generic(m_a,data,m_t&C); } void lh5801_cpu_device::lh5801_add_mem(address_space &space, int addr, uint8_t data) { int v=lh5801_add_generic(space.read_byte(addr),data,0); space.write_byte(addr,v); } void lh5801_cpu_device::lh5801_adr(PAIR *reg) { reg->b.l=lh5801_add_generic(reg->b.l,m_a,0); if (m_t&C) { reg->b.h++; } } void lh5801_cpu_device::lh5801_sbc(uint8_t data) { m_a=lh5801_add_generic(m_a,data^0xff,m_t&C); } void lh5801_cpu_device::lh5801_cpa(uint8_t a, uint8_t b) { lh5801_add_generic(a, b^0xff, 1); } uint8_t lh5801_cpu_device::lh5801_decimaladd_generic(int left, int right, int carry) { int res=lh5801_add_generic(left, right, carry); uint8_t da; //DA values taken from official documentation if (!(m_t&C) && !(m_t&H)) da = 0x9a; else if (!(m_t&C) && (m_t&H)) da = 0xa0; else if ((m_t&C) && !(m_t&H)) da = 0xfa; else //if ((m_t&C) && (m_t&H)) da = 0x00; return res + da; } void lh5801_cpu_device::lh5801_dca(uint8_t data) { m_a += 0x66; //taken from official documentation m_a=lh5801_decimaladd_generic(m_a, data, m_t&C); } void lh5801_cpu_device::lh5801_dcs(uint8_t data) { m_a=lh5801_decimaladd_generic(m_a, data^0xff, m_t&C); } void lh5801_cpu_device::lh5801_and(uint8_t data) { m_a&=data; m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_and_mem(address_space &space, int addr, uint8_t data) { data&=space.read_byte(addr); m_t&=~Z; if (!data) m_t|=Z; space.write_byte(addr,data); } void lh5801_cpu_device::lh5801_bit(uint8_t a, uint8_t b) { m_t&=~Z; if (!(a&b)) m_t|=Z; } void lh5801_cpu_device::lh5801_eor(uint8_t data) { m_a^=data; m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_ora(uint8_t data) { m_a|=data; m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_ora_mem(address_space &space, int addr, uint8_t data) { data|=space.read_byte(addr); m_t&=~Z; if (!data) m_t|=Z; space.write_byte(addr,data); } void lh5801_cpu_device::lh5801_lda(uint8_t data) { m_a=data; m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_lde(PAIR *reg) { // or z flag depends on reg m_a=m_program->read_byte(reg->w.l--); m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_sde(PAIR *reg) { m_program->write_byte(reg->w.l--, m_a); } void lh5801_cpu_device::lh5801_lin(PAIR *reg) { // or z flag depends on reg m_a=m_program->read_byte(reg->w.l++); m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_sin(PAIR *reg) { m_program->write_byte(reg->w.l++, m_a); } void lh5801_cpu_device::lh5801_dec(uint8_t *adr) { *adr=lh5801_add_generic(*adr,0xff,0); } void lh5801_cpu_device::lh5801_inc(uint8_t *adr) { *adr=lh5801_add_generic(*adr,1,0); } void lh5801_cpu_device::lh5801_pop() { m_a=m_program->read_byte(++S); m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_pop_word(PAIR *reg) { reg->b.h=m_program->read_byte(++S); reg->b.l=m_program->read_byte(++S); // z flag? } void lh5801_cpu_device::lh5801_rtn() { P=m_program->read_byte(++S)<<8; P|=m_program->read_byte(++S); } void lh5801_cpu_device::lh5801_rti() { P=m_program->read_byte(++S)<<8; P|=m_program->read_byte(++S); m_t=m_program->read_byte(++S); } void lh5801_cpu_device::lh5801_push(uint8_t data) { m_program->write_byte(S--, data); } void lh5801_cpu_device::lh5801_push_word(uint16_t data) { m_program->write_byte(S--, data&0xff); m_program->write_byte(S--, data>>8); } void lh5801_cpu_device::lh5801_jmp(uint16_t adr) { P=adr; } void lh5801_cpu_device::lh5801_branch_plus(int doit) { uint8_t t=m_cache->read_byte(P++); if (doit) { m_icount-=3; P+=t; } } void lh5801_cpu_device::lh5801_branch_minus(int doit) { uint8_t t=m_cache->read_byte(P++); if (doit) { m_icount-=3; P-=t; } } void lh5801_cpu_device::lh5801_lop() { uint8_t t=m_cache->read_byte(P++); m_icount-=8; if (UL--) { m_icount-=3; P-=t; } } void lh5801_cpu_device::lh5801_sjp() { uint16_t n=lh5801_readop_word(); lh5801_push_word(P); P=n; } void lh5801_cpu_device::lh5801_vector(int doit, int nr) { if (doit) { lh5801_push_word(P); P=m_program->read_byte(0xff00+nr)<<8; P|=m_program->read_byte(0xff00+nr+1); m_icount-=21-8; } m_t&=~Z; // after the jump!? } void lh5801_cpu_device::lh5801_aex() { uint8_t t=m_a; m_a=(t<<4)|(t>>4); // flags? } void lh5801_cpu_device::lh5801_drl(address_space &space, int adr) { uint16_t t=m_a|(space.read_byte(adr)<<8); m_a=t>>8; space.write_byte(adr,t>>4); } void lh5801_cpu_device::lh5801_drr(address_space &space, int adr) { uint16_t t=space.read_byte(adr)|(m_a<<8); m_a=t; space.write_byte(adr,t>>4); } void lh5801_cpu_device::lh5801_rol() { // maybe use of the adder int n = m_a; m_a = (n<<1) | (m_t&C); // flags cvhz m_t&=~(H|V|Z|C); if (n&0x80) m_t|=C; if (!m_a) m_t|=Z; if (m_a & 0x10) m_t|=H; if ((BIT(n,6) && !BIT(n,7)) || (!BIT(n,6) && BIT(n,7))) m_t|=V; } void lh5801_cpu_device::lh5801_ror() { int n = m_a; m_a=(n | ((m_t&C)<<8))>>1; // flags cvhz m_t&=~(H|V|Z|C); if (n&0x01) m_t|=C; if (!m_a) m_t|=Z; if (m_a & 0x08) m_t|=H; if ((BIT(n,0) && BIT(m_a,1)) || (BIT(m_a,0) && BIT(n,1))) m_t|=V; } void lh5801_cpu_device::lh5801_shl() { int n = m_a; m_a<<=1; // flags cvhz m_t&=~(H|V|Z|C); if (n&0x80) m_t|=C; if (!m_a) m_t|=Z; if (m_a & 0x10) m_t|=H; if ((BIT(n,6) && !BIT(n,7)) || (!BIT(n,6) && BIT(n,7))) m_t|=V; } void lh5801_cpu_device::lh5801_shr() { int n = m_a; m_a>>=1; // flags cvhz m_t&=~(H|V|Z|C); if (n & 0x01) m_t|=C; if (!m_a) m_t|=Z; if (m_a & 0x08) m_t|=H; if ((BIT(n,0) && BIT(m_a,1)) || (BIT(m_a,0) && BIT(n,1))) m_t|=V; } void lh5801_cpu_device::lh5801_am(int value) { m_tm=value; // jfkas?jfkl?jkd? } void lh5801_cpu_device::lh5801_ita() { m_a=m_in_func(); m_t&=~Z; if (!m_a) m_t|=Z; } void lh5801_cpu_device::lh5801_instruction_fd() { int oper; int adr; oper=m_cache->read_byte(P++); switch (oper) { case 0x01: lh5801_sbc(m_io->read_byte(X)); m_icount-=11;break; case 0x03: lh5801_adc(m_io->read_byte(X)); m_icount-=11;break; case 0x05: lh5801_lda(m_io->read_byte(X)); m_icount-=10;break; case 0x07: lh5801_cpa(m_a, m_io->read_byte(X)); m_icount-=11;break; case 0x08: X=X;m_icount-=11;break; //!!! case 0x09: lh5801_and(m_io->read_byte(X)); m_icount-=11;break; case 0x0a: lh5801_pop_word(&m_x); m_icount-=15;break; case 0x0b: lh5801_ora(m_io->read_byte(X)); m_icount-=11;break; case 0x0c: lh5801_dcs(m_io->read_byte(X)); m_icount-=17; break; case 0x0d: lh5801_eor(m_io->read_byte(X)); m_icount-=11;break; case 0x0e: m_io->write_byte(X,m_a); m_icount-=10;break; case 0x0f: lh5801_bit(m_io->read_byte(X),m_a); m_icount-=11;break; case 0x11: lh5801_sbc(m_io->read_byte(Y)); m_icount-=11;break; case 0x13: lh5801_adc(m_io->read_byte(Y)); m_icount-=11;break; case 0x15: lh5801_lda(m_io->read_byte(Y)); m_icount-=10;break; case 0x17: lh5801_cpa(m_a, m_io->read_byte(Y)); m_icount-=11;break; case 0x18: X=Y;m_icount-=11;break; case 0x19: lh5801_and(m_io->read_byte(Y)); m_icount-=11;break; case 0x1a: lh5801_pop_word(&m_y); m_icount-=15;break; case 0x1b: lh5801_ora(m_io->read_byte(Y)); m_icount-=11;break; case 0x1c: lh5801_dcs(m_io->read_byte(Y)); m_icount-=17; break; case 0x1d: lh5801_eor(m_io->read_byte(Y)); m_icount-=11;break; case 0x1e: m_io->write_byte(Y,m_a); m_icount-=10;break; case 0x1f: lh5801_bit(m_io->read_byte(Y),m_a); m_icount-=11;break; case 0x21: lh5801_sbc(m_io->read_byte(U)); m_icount-=11;break; case 0x23: lh5801_adc(m_io->read_byte(U)); m_icount-=11;break; case 0x25: lh5801_lda(m_io->read_byte(U)); m_icount-=10;break; case 0x27: lh5801_cpa(m_a, m_io->read_byte(U)); m_icount-=11;break; case 0x28: X=U;m_icount-=11;break; case 0x29: lh5801_and(m_io->read_byte(U)); m_icount-=11;break; case 0x2a: lh5801_pop_word(&m_u); m_icount-=15;break; case 0x2b: lh5801_ora(m_io->read_byte(U)); m_icount-=11;break; case 0x2c: lh5801_dcs(m_io->read_byte(U)); m_icount-=17; break; case 0x2d: lh5801_eor(m_io->read_byte(U)); m_icount-=11;break; case 0x2e: m_io->write_byte(U,m_a); m_icount-=10;break; case 0x2f: lh5801_bit(m_io->read_byte(U),m_a); m_icount-=11;break; case 0x40: lh5801_inc(&XH);m_icount-=9;break; case 0x42: lh5801_dec(&XH);m_icount-=9;break; case 0x48: X=S;m_icount-=11;break; case 0x49: lh5801_and_mem(*m_io, X, m_cache->read_byte(P++)); m_icount-=17;break; case 0x4a: X=X;m_icount-=11;break; //!!! case 0x4b: lh5801_ora_mem(*m_io, X, m_cache->read_byte(P++)); m_icount-=17;break; case 0x4c: m_bf=0;/*off !*/ m_icount-=8;break; case 0x4d: lh5801_bit(m_io->read_byte(X), m_cache->read_byte(P++));m_icount-=14;break; case 0x4e: S=X;m_icount-=11;break; case 0x4f: lh5801_add_mem(*m_io, X, m_cache->read_byte(P++)); m_icount-=17;break; case 0x50: lh5801_inc(&YH);m_icount-=9;break; case 0x52: lh5801_dec(&YH);m_icount-=9;break; case 0x58: X=P;m_icount-=11;break; case 0x59: lh5801_and_mem(*m_io, Y, m_cache->read_byte(P++)); m_icount-=17;break; case 0x5a: Y=X;m_icount-=11;break; case 0x5b: lh5801_ora_mem(*m_io, Y, m_cache->read_byte(P++)); m_icount-=17;break; case 0x5d: lh5801_bit(m_io->read_byte(Y), m_cache->read_byte(P++));m_icount-=14;break; case 0x5e: lh5801_jmp(X);m_icount-=11;break; // P=X case 0x5f: lh5801_add_mem(*m_io, Y, m_cache->read_byte(P++)); m_icount-=17;break; case 0x60: lh5801_inc(&UH);m_icount-=9;break; case 0x62: lh5801_dec(&UH);m_icount-=9;break; case 0x69: lh5801_and_mem(*m_io, U, m_cache->read_byte(P++)); m_icount-=17;break; case 0x6a: U=X;m_icount-=11;break; case 0x6b: lh5801_ora_mem(*m_io, U, m_cache->read_byte(P++)); m_icount-=17;break; case 0x6d: lh5801_bit(m_io->read_byte(X), m_cache->read_byte(P++));m_icount-=14;break; case 0x6f: lh5801_add_mem(*m_io, U, m_cache->read_byte(P++)); m_icount-=17;break; case 0x81: m_t|=IE; /*sie !*/m_icount-=8;break; case 0x88: lh5801_push_word(X); m_icount-=14;break; case 0x8a: lh5801_pop(); m_icount-=12; break; case 0x8c: lh5801_dca(m_io->read_byte(X)); m_icount-=19; break; case 0x8e: /*cdv clears internal devider*/m_icount-=8;break; case 0x98: lh5801_push_word(Y); m_icount-=14;break; case 0x9c: lh5801_dca(m_io->read_byte(Y)); m_icount-=19; break; case 0xa1: lh5801_sbc(m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xa3: lh5801_adc(m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xa5: lh5801_lda(m_io->read_byte(lh5801_readop_word())); m_icount-=16;break; case 0xa7: lh5801_cpa(m_a, m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xa8: lh5801_push_word(U); m_icount-=14;break; case 0xa9: lh5801_and(m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xaa: lh5801_lda(m_t); m_icount-=9;break; case 0xab: lh5801_ora(m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xac: lh5801_dca(m_io->read_byte(U)); m_icount-=19; break; case 0xad: lh5801_eor(m_io->read_byte(lh5801_readop_word())); m_icount-=17;break; case 0xae: m_io->write_byte(lh5801_readop_word(),m_a); m_icount-=16;break; case 0xaf: lh5801_bit(m_io->read_byte(lh5801_readop_word()),m_a); m_icount-=17;break; case 0xb1: /*hlt*/m_icount-=8;break; case 0xba: lh5801_ita();m_icount-=9;break; case 0xbe: m_t&=~IE; /*rie !*/m_icount-=8;break; case 0xc0: m_dp=0; /*rdp !*/m_icount-=8;break; case 0xc1: m_dp=1; /*sdp !*/m_icount-=8;break; case 0xc8: lh5801_push(m_a); m_icount-=11;break; case 0xca: lh5801_adr(&m_x);m_icount-=11;break; case 0xcc: /*atp sends a to data bus*/m_icount-=9;break; case 0xce: lh5801_am(m_a); m_icount-=9; break; case 0xd3: lh5801_drr(*m_io, X); m_icount-=16; break; case 0xd7: lh5801_drl(*m_io, X); m_icount-=16; break; case 0xda: lh5801_adr(&m_y);m_icount-=11;break; case 0xde: lh5801_am(m_a|0x100); m_icount-=9; break; case 0xea: lh5801_adr(&m_u);m_icount-=11;break; case 0xe9: adr=lh5801_readop_word(); lh5801_and_mem(*m_io, adr, m_cache->read_byte(P++)); m_icount-=23; break; case 0xeb: adr=lh5801_readop_word(); lh5801_ora_mem(*m_io, adr, m_cache->read_byte(P++)); m_icount-=23; break; case 0xec: m_t=m_a; m_icount-=9;break; case 0xed: adr=lh5801_readop_word(); lh5801_bit(m_io->read_byte(adr), m_cache->read_byte(P++)); m_icount-=20;break; case 0xef: adr=lh5801_readop_word(); lh5801_add_mem(*m_io, adr, m_cache->read_byte(P++)); m_icount-=23; break; default: logerror("lh5801 illegal opcode at %.4x fd%.2x\n",P-2, oper); } } void lh5801_cpu_device::lh5801_instruction() { int oper; int adr; oper=m_cache->read_byte(P++); switch (oper) { case 0x00: lh5801_sbc(XL); m_icount-=6;break; case 0x01: lh5801_sbc(m_program->read_byte(X)); m_icount-=7;break; case 0x02: lh5801_adc(XL); m_icount-=6;break; case 0x03: lh5801_adc(m_program->read_byte(X)); m_icount-=7;break; case 0x04: lh5801_lda(XL); m_icount-=5;break; case 0x05: lh5801_lda(m_program->read_byte(X)); m_icount-=6;break; case 0x06: lh5801_cpa(m_a, XL); m_icount-=6;break; case 0x07: lh5801_cpa(m_a, m_program->read_byte(X)); m_icount-=7;break; case 0x08: XH=m_a; m_icount-=5; break; case 0x09: lh5801_and(m_program->read_byte(X)); m_icount-=7;break; case 0x0a: XL=m_a; m_icount-=5; break; case 0x0b: lh5801_ora(m_program->read_byte(X)); m_icount-=7;break; case 0x0c: lh5801_dcs(m_program->read_byte(X)); m_icount-=13; break; case 0x0d: lh5801_eor(m_program->read_byte(X)); m_icount-=7;break; case 0x0e: m_program->write_byte(X,m_a); m_icount-=6;break; case 0x0f: lh5801_bit(m_program->read_byte(X),m_a); m_icount-=7;break; case 0x10: lh5801_sbc(YL); m_icount-=6;break; case 0x11: lh5801_sbc(m_program->read_byte(Y)); m_icount-=7;break; case 0x12: lh5801_adc(YL); m_icount-=6;break; case 0x13: lh5801_adc(m_program->read_byte(Y)); m_icount-=7;break; case 0x14: lh5801_lda(YL); m_icount-=5;break; case 0x15: lh5801_lda(m_program->read_byte(Y)); m_icount-=6;break; case 0x16: lh5801_cpa(m_a, YL); m_icount-=6;break; case 0x17: lh5801_cpa(m_a, m_program->read_byte(Y)); m_icount-=7;break; case 0x18: YH=m_a; m_icount-=5; break; case 0x19: lh5801_and(m_program->read_byte(Y)); m_icount-=7;break; case 0x1a: YL=m_a; m_icount-=5; break; case 0x1b: lh5801_ora(m_program->read_byte(Y)); m_icount-=7;break; case 0x1c: lh5801_dcs(m_program->read_byte(Y)); m_icount-=13; break; case 0x1d: lh5801_eor(m_program->read_byte(Y)); m_icount-=7;break; case 0x1e: m_program->write_byte(Y,m_a); m_icount-=6;break; case 0x1f: lh5801_bit(m_program->read_byte(Y),m_a); m_icount-=7;break; case 0x20: lh5801_sbc(UL); m_icount-=6;break; case 0x21: lh5801_sbc(m_program->read_byte(U)); m_icount-=7;break; case 0x22: lh5801_adc(UL); m_icount-=6;break; case 0x23: lh5801_adc(m_program->read_byte(U)); m_icount-=7;break; case 0x24: lh5801_lda(UL); m_icount-=5;break; case 0x25: lh5801_lda(m_program->read_byte(U)); m_icount-=6;break; case 0x26: lh5801_cpa(m_a, UL); m_icount-=6;break; case 0x27: lh5801_cpa(m_a, m_program->read_byte(U)); m_icount-=7;break; case 0x28: UH=m_a; m_icount-=5; break; case 0x29: lh5801_and(m_program->read_byte(U)); m_icount-=7;break; case 0x2a: UL=m_a; m_icount-=5; break; case 0x2b: lh5801_ora(m_program->read_byte(U)); m_icount-=7;break; case 0x2c: lh5801_dcs(m_program->read_byte(U)); m_icount-=13; break; case 0x2d: lh5801_eor(m_program->read_byte(U)); m_icount-=7;break; case 0x2e: m_program->write_byte(U,m_a); m_icount-=6;break; case 0x2f: lh5801_bit(m_program->read_byte(U),m_a); m_icount-=7;break; case 0x38: /*nop*/m_icount-=5;break; case 0x40: lh5801_inc(&XL);m_icount-=5;break; case 0x41: lh5801_sin(&m_x); m_icount-=6;break; case 0x42: lh5801_dec(&XL);m_icount-=5;break; case 0x43: lh5801_sde(&m_x); m_icount-=6;break; case 0x44: X++;m_icount-=5;break; case 0x45: lh5801_lin(&m_x);m_icount-=6;break; case 0x46: X--;m_icount-=5;break; case 0x47: lh5801_lde(&m_x);m_icount-=6;break; case 0x48: XH=m_cache->read_byte(P++);m_icount-=6;break; case 0x49: lh5801_and_mem(*m_program, X, m_cache->read_byte(P++)); m_icount-=13;break; case 0x4a: XL=m_cache->read_byte(P++);m_icount-=6;break; case 0x4b: lh5801_ora_mem(*m_program, X, m_cache->read_byte(P++)); m_icount-=13;break; case 0x4c: lh5801_cpa(XH, m_cache->read_byte(P++)); m_icount-=7;break; case 0x4d: lh5801_bit(m_program->read_byte(X), m_cache->read_byte(P++));m_icount-=10;break; case 0x4e: lh5801_cpa(XL, m_cache->read_byte(P++)); m_icount-=7;break; case 0x4f: lh5801_add_mem(*m_program, X, m_cache->read_byte(P++)); m_icount-=13;break; case 0x50: lh5801_inc(&YL);m_icount-=5;break; case 0x51: lh5801_sin(&m_y); m_icount-=6;break; case 0x52: lh5801_dec(&YL);m_icount-=5;break; case 0x53: lh5801_sde(&m_y); m_icount-=6;break; case 0x54: Y++;m_icount-=5;break; case 0x55: lh5801_lin(&m_y);m_icount-=6;break; case 0x56: Y--;m_icount-=5;break; case 0x57: lh5801_lde(&m_y);m_icount-=6;break; case 0x58: YH=m_cache->read_byte(P++);m_icount-=6;break; case 0x59: lh5801_and_mem(*m_program, Y, m_cache->read_byte(P++)); m_icount-=13;break; case 0x5a: YL=m_cache->read_byte(P++);m_icount-=6;break; case 0x5b: lh5801_ora_mem(*m_program, Y, m_cache->read_byte(P++)); m_icount-=13;break; case 0x5c: lh5801_cpa(YH, m_cache->read_byte(P++)); m_icount-=7;break; case 0x5d: lh5801_bit(m_program->read_byte(Y), m_cache->read_byte(P++));m_icount-=10;break; case 0x5e: lh5801_cpa(YL, m_cache->read_byte(P++)); m_icount-=7;break; case 0x5f: lh5801_add_mem(*m_program, Y, m_cache->read_byte(P++)); m_icount-=13;break; case 0x60: lh5801_inc(&UL);m_icount-=5;break; case 0x61: lh5801_sin(&m_u); m_icount-=6;break; case 0x62: lh5801_dec(&UL);m_icount-=5;break; case 0x63: lh5801_sde(&m_u); m_icount-=6;break; case 0x64: U++;m_icount-=5;break; case 0x65: lh5801_lin(&m_u);m_icount-=6;break; case 0x66: U--;m_icount-=5;break; case 0x67: lh5801_lde(&m_u);m_icount-=6;break; case 0x68: UH=m_cache->read_byte(P++);m_icount-=6;break; case 0x69: lh5801_and_mem(*m_program, U, m_cache->read_byte(P++)); m_icount-=13;break; case 0x6a: UL=m_cache->read_byte(P++);m_icount-=6;break; case 0x6b: lh5801_ora_mem(*m_program, U, m_cache->read_byte(P++)); m_icount-=13;break; case 0x6c: lh5801_cpa(UH, m_cache->read_byte(P++)); m_icount-=7;break; case 0x6d: lh5801_bit(m_program->read_byte(U), m_cache->read_byte(P++));m_icount-=10;break; case 0x6e: lh5801_cpa(UL, m_cache->read_byte(P++)); m_icount-=7;break; case 0x6f: lh5801_add_mem(*m_program, U, m_cache->read_byte(P++)); m_icount-=13;break; case 0x80: lh5801_sbc(XH); m_icount-=6;break; case 0x81: lh5801_branch_plus(!(m_t&C)); m_icount-=8; break; case 0x82: lh5801_adc(XH); m_icount-=6;break; case 0x83: lh5801_branch_plus(m_t&C); m_icount-=8; break; case 0x84: lh5801_lda(XH); m_icount-=5;break; case 0x85: lh5801_branch_plus(!(m_t&H)); m_icount-=8; break; case 0x86: lh5801_cpa(m_a, XH); m_icount-=6;break; case 0x87: lh5801_branch_plus(m_t&H); m_icount-=8; break; case 0x88: lh5801_lop(); break; case 0x89: lh5801_branch_plus(!(m_t&Z)); m_icount-=8; break; case 0x8a: lh5801_rti(); m_icount-=14; break; case 0x8b: lh5801_branch_plus(m_t&Z); m_icount-=8; break; case 0x8c: lh5801_dca(m_program->read_byte(X)); m_icount-=15; break; case 0x8d: lh5801_branch_plus(!(m_t&V)); m_icount-=8; break; case 0x8e: lh5801_branch_plus(1); m_icount-=5; break; case 0x8f: lh5801_branch_plus(m_t&V); m_icount-=8; break; case 0x90: lh5801_sbc(YH); m_icount-=6;break; case 0x91: lh5801_branch_minus(!(m_t&C)); m_icount-=8; break; case 0x92: lh5801_adc(YH); m_icount-=6;break; case 0x93: lh5801_branch_minus(m_t&C); m_icount-=8; break; case 0x94: lh5801_lda(YH); m_icount-=5;break; case 0x95: lh5801_branch_minus(!(m_t&H)); m_icount-=8; break; case 0x96: lh5801_cpa(m_a, YH); m_icount-=6;break; case 0x97: lh5801_branch_minus(m_t&H); m_icount-=8; break; case 0x99: lh5801_branch_minus(!(m_t&Z)); m_icount-=8; break; case 0x9a: lh5801_rtn(); m_icount-=11; break; case 0x9b: lh5801_branch_minus(m_t&Z); m_icount-=8; break; case 0x9c: lh5801_dca(m_program->read_byte(Y)); m_icount-=15; break; case 0x9d: lh5801_branch_minus(!(m_t&V)); m_icount-=8; break; case 0x9e: lh5801_branch_minus(1); m_icount-=6; break; case 0x9f: lh5801_branch_minus(m_t&V); m_icount-=8; break; case 0xa0: lh5801_sbc(UH); m_icount-=6;break; case 0xa2: lh5801_adc(UH); m_icount-=6;break; case 0xa1: lh5801_sbc(m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xa3: lh5801_adc(m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xa4: lh5801_lda(UH); m_icount-=5;break; case 0xa5: lh5801_lda(m_program->read_byte(lh5801_readop_word())); m_icount-=12;break; case 0xa6: lh5801_cpa(m_a, UH); m_icount-=6;break; case 0xa7: lh5801_cpa(m_a, m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xa8: m_pv=1;/*spv!*/ m_icount-=4; break; case 0xa9: lh5801_and(m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xaa: S=lh5801_readop_word();m_icount-=6;break; case 0xab: lh5801_ora(m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xac: lh5801_dca(m_program->read_byte(U)); m_icount-=15; break; case 0xad: lh5801_eor(m_program->read_byte(lh5801_readop_word())); m_icount-=13;break; case 0xae: m_program->write_byte(lh5801_readop_word(),m_a); m_icount-=12;break; case 0xaf: lh5801_bit(m_program->read_byte(lh5801_readop_word()),m_a); m_icount-=13;break; case 0xb1: lh5801_sbc(m_cache->read_byte(P++)); m_icount-=7;break; case 0xb3: lh5801_adc(m_cache->read_byte(P++)); m_icount-=7;break; case 0xb5: lh5801_lda(m_cache->read_byte(P++)); m_icount-=6;break; case 0xb7: lh5801_cpa(m_a, m_cache->read_byte(P++)); m_icount-=7;break; case 0xb8: m_pv=0;/*rpv!*/ m_icount-=4; break; case 0xb9: lh5801_and(m_cache->read_byte(P++)); m_icount-=7;break; case 0xba: lh5801_jmp(lh5801_readop_word()); m_icount-=12;break; case 0xbb: lh5801_ora(m_cache->read_byte(P++)); m_icount-=7;break; case 0xbd: lh5801_eor(m_cache->read_byte(P++)); m_icount-=7;break; case 0xbe: lh5801_sjp(); m_icount-=19; break; case 0xbf: lh5801_bit(m_a, m_cache->read_byte(P++));m_icount-=7;break; case 0xc1: lh5801_vector(!(m_t&C), m_cache->read_byte(P++)); m_icount-=8;break; case 0xc3: lh5801_vector(m_t&C, m_cache->read_byte(P++)); m_icount-=8;break; case 0xc5: lh5801_vector(!(m_t&H), m_cache->read_byte(P++)); m_icount-=8;break; case 0xc7: lh5801_vector(m_t&H, m_cache->read_byte(P++)); m_icount-=8;break; case 0xc9: lh5801_vector(!(m_t&Z), m_cache->read_byte(P++)); m_icount-=8;break; case 0xcb: lh5801_vector(m_t&Z, m_cache->read_byte(P++)); m_icount-=8;break; case 0xcd: lh5801_vector(1, m_cache->read_byte(P++)); m_icount-=7;break; case 0xcf: lh5801_vector(m_t&V, m_cache->read_byte(P++)); m_icount-=8;break; case 0xd1: lh5801_ror(); m_icount-=6; break; case 0xd3: lh5801_drr(*m_program, X); m_icount-=12; break; case 0xd5: lh5801_shr(); m_icount-=6; break; case 0xd7: lh5801_drl(*m_program, X); m_icount-=12; break; case 0xd9: lh5801_shl(); m_icount-=6; break; case 0xdb: lh5801_rol(); m_icount-=6; break; case 0xdd: lh5801_inc(&m_a);m_icount-=5;break; case 0xdf: lh5801_dec(&m_a);m_icount-=5;break; case 0xe1: m_pu=1;/*spu!*/ m_icount-=4; break; case 0xe3: m_pu=0;/*rpu!*/ m_icount-=4; break; case 0xe9: adr=lh5801_readop_word();lh5801_and_mem(*m_program, adr, m_cache->read_byte(P++)); m_icount-=19;break; case 0xeb: adr=lh5801_readop_word();lh5801_ora_mem(*m_program, adr, m_cache->read_byte(P++)); m_icount-=19;break; case 0xed: adr=lh5801_readop_word();lh5801_bit(m_program->read_byte(adr), m_cache->read_byte(P++)); m_icount-=16;break; case 0xef: adr=lh5801_readop_word(); lh5801_add_mem(*m_program, adr, m_cache->read_byte(P++)); m_icount-=19; break; case 0xf1: lh5801_aex(); m_icount-=6; break; case 0xf5: m_program->write_byte(Y++, m_program->read_byte(X++)); m_icount-=7; break; //tin case 0xf7: lh5801_cpa(m_a, m_program->read_byte(X++));m_icount-=7; break; //cin case 0xf9: m_t&=~C;m_icount-=4;break; case 0xfb: m_t|=C;m_icount-=4;break; case 0xfd: lh5801_instruction_fd();break; case 0xc0: case 0xc2: case 0xc4: case 0xc6: case 0xc8: case 0xca: case 0xcc: case 0xce: case 0xd0: case 0xd2: case 0xd4: case 0xd6: case 0xd8: case 0xda: case 0xdc: case 0xde: case 0xe0: case 0xe2: case 0xe4: case 0xe6: case 0xe8: case 0xea: case 0xec: case 0xee: case 0xf0: case 0xf2: case 0xf4: case 0xf6: lh5801_vector(1, oper);m_icount-=4;break; default: logerror("lh5801 illegal opcode at %.4x %.2x\n",P-1, oper); } }