char ismf(char *a){
int r=0;
while(1){
if(!_PC(strcmp,(farr[r].name,a)))
return r;
r++;
}
return -1;
}
int inList(const char *key,const char **list){
int r=0;
while(list[r]!=NULL){
if(!_PC(strcmp,(list[r],key)))
return r;
r++;
}
return -1;
}
int option(int c,char **v){
if(c<2) error("no argument");
int ch;
while((ch=_PC(getopt,(c,v,opt)))){
switch(ch){
case 'v':
version();break;
case 'h': usage();break;
default: continue;
}
}
}
stb r4,_A(r3)
stb r4,_X(r3)
stb r4,_Y(r3)
stw r4,_CycleBK(r3)
stw r4,_IntReq(r3)
li r5,R_FLAG|Z_FLAG
stb r5,_F(r3)
li r6,0xFF
stb r6,_SP(r3)
li r9,0
lwz r7,_MEM_X(r3) // load PC with reset vector
ori r9,r9,RESET_VECTOR
lwz r7,ROMSeg4_Ind(r7)
lhbrx r8,r9,r7
sth r8,_PC(r3)
blr
}
// -----------------------------------------------------------------------
// This function loops until cycles <= 0.
// Ignores bad opcodes, doesn't return anything.
asm void N6502_Exec()
{
mflr r14 // save our calling address
entry static __execloop
subc. r28,r28,r4 // decrease cycles by r4
