void lh5801_reset(void *param)
{
if (param) {
lh5801.config=(LH5801_CONFIG *)param;
}
P=(cpu_readmem17(0xfffe)<<8)|cpu_readmem17(0xffff);
change_pc17(P);
lh5801.idle=0;
}
unsigned lh5801_dasm(char *dst, unsigned oldpc)
{
int pc;
int oper;
UINT16 absolut;
const Entry *entry;
int temp;
oldpc&=0xffff;
pc=oldpc;
oper=cpu_readmem17(pc++);
entry=table+oper;
if (table[oper].ins==PREFD) {
oper=cpu_readmem17(pc++);
entry=table_fd+oper;
}
switch (entry->ins) {
case ILL:
sprintf(dst,"%s %.2x", InsNames[entry->ins], oper);break;
case ILL2:
sprintf(dst,"%s fd%.2x", InsNames[entry->ins], oper);break;
default:
switch(entry->adr) {
case Imp:
sprintf(dst,"%s", InsNames[entry->ins]);break;
case Reg:
sprintf(dst,"%s %s", InsNames[entry->ins],RegNames[entry->reg]);break;
case RegImm:
sprintf(dst,"%s %s,%.2x", InsNames[entry->ins],
RegNames[entry->reg], cpu_readmem17(pc++));
break;
case RegImm16:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s %s,%.4x", InsNames[entry->ins],RegNames[entry->reg],absolut );
break;
case Vec:
sprintf(dst,"%s (ff%.2x)", InsNames[entry->ins],cpu_readmem17(pc++));break;
case Vej:
sprintf(dst,"%s (ff%.2x)", InsNames[entry->ins], oper);break;
case Imm:
sprintf(dst,"%s %.2x", InsNames[entry->ins],cpu_readmem17(pc++));break;
case Imm16:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s %.4x", InsNames[entry->ins],absolut );break;
case RelP:
temp=cpu_readmem17(pc++);
sprintf(dst,"%s %.4x", InsNames[entry->ins],pc+temp );break;
case RelM:
temp=cpu_readmem17(pc++);
sprintf(dst,"%s %.4x", InsNames[entry->ins],pc-temp );break;
case Abs:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s (%.4x)", InsNames[entry->ins],absolut );break;
case ME1Abs:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s #(%.4x)", InsNames[entry->ins],absolut );break;
case AbsImm:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s (%.4x),%.2x", InsNames[entry->ins],absolut,
cpu_readmem17(pc++));break;
case ME1AbsImm:
absolut=cpu_readmem17(pc++)<<8;
absolut|=cpu_readmem17(pc++);
sprintf(dst,"%s #(%.4x),%.2x", InsNames[entry->ins],absolut,
cpu_readmem17(pc++));break;
case ME0:
sprintf(dst,"%s (%s)", InsNames[entry->ins],RegNames[entry->reg] );break;
case ME0Imm:
sprintf(dst,"%s (%s),%.2x", InsNames[entry->ins],RegNames[entry->reg],cpu_readmem17(pc++) );
break;
case ME1:
sprintf(dst,"%s #(%s)", InsNames[entry->ins],RegNames[entry->reg] );break;
case ME1Imm:
sprintf(dst,"%s #(%s),%.2x", InsNames[entry->ins],RegNames[entry->reg],cpu_readmem17(pc++) );
break;
}
}
return pc-oldpc;
}