extern int illegal(register pdp_regs *p);
extern int adc(register pdp_regs *p);
extern int adcb(register pdp_regs *p);
extern int add(register pdp_regs *p);
extern int ash(register pdp_regs *p);
extern int ashc(register pdp_regs *p);
extern int asl(register pdp_regs *p);
extern int aslb(register pdp_regs *p);
extern int asr(register pdp_regs *p);
extern int asrb(register pdp_regs *p);
extern int bcc(register pdp_regs *p);
extern int bcs(register pdp_regs *p);
extern int beq(register pdp_regs *p);
extern int bge(register pdp_regs *p);
extern int bgt(register pdp_regs *p);
extern int bhi(register pdp_regs *p);
extern int bic(register pdp_regs *p);
extern int bicb(register pdp_regs *p);
extern int bis(register pdp_regs *p);
extern int bisb(register pdp_regs *p);
extern int bit(register pdp_regs *p);
extern int bitb(register pdp_regs *p);
extern int ble(register pdp_regs *p);
extern int blos(register pdp_regs *p);
extern int blt(register pdp_regs *p);
extern int bmi(register pdp_regs *p);
extern int bne(register pdp_regs *p);
extern int bpl(register pdp_regs *p);
extern int bpt(register pdp_regs *p);
extern int br(register pdp_regs *p);
extern int bvc(register pdp_regs *p);
extern int bvs(register pdp_regs *p);
extern int clr(register pdp_regs *p);
extern int clrb(register pdp_regs *p);
extern int ccc(register pdp_regs *p);
extern int cmp(register pdp_regs *p);
extern int cmpb(register pdp_regs *p);
extern int com(register pdp_regs *p);
extern int comb(register pdp_regs *p);
extern int dec(register pdp_regs *p);
extern int decb(register pdp_regs *p);
extern int divide(register pdp_regs *p);
extern int emt(register pdp_regs *p);
extern int halt(register pdp_regs *p);
extern int inc(register pdp_regs *p);
extern int incb(register pdp_regs *p);
extern int iot(register pdp_regs *p);
extern int jmp(register pdp_regs *p);
extern int jsr(register pdp_regs *p);
extern int mark(register pdp_regs *p);
extern int mfpd(register pdp_regs *p);
extern int mfpi(register pdp_regs *p);
extern int mfps(register pdp_regs *p);
extern int mov(register pdp_regs *p);
extern int movb(register pdp_regs *p);
extern int mtpd(register pdp_regs *p);
extern int mtpi(register pdp_regs *p);
extern int mtps(register pdp_regs *p);
extern int mul(register pdp_regs *p);
extern int neg(register pdp_regs *p);
extern int negb(register pdp_regs *p);
extern int busreset(register pdp_regs *p);
extern int rol(register pdp_regs *p);
extern int rolb(register pdp_regs *p);
extern int ror(register pdp_regs *p);
extern int rorb(register pdp_regs *p);
extern int rti(register pdp_regs *p);
extern int rts(register pdp_regs *p);
extern int rtt(register pdp_regs *p);
extern int sbc(register pdp_regs *p);
extern int sbcb(register pdp_regs *p);
extern int scc(register pdp_regs *p);
extern int sob(register pdp_regs *p);
extern int sub(register pdp_regs *p);
extern int swabi(register pdp_regs *p);
extern int sxt(register pdp_regs *p);
extern int trap(register pdp_regs *p);
extern int tst(register pdp_regs *p);
extern int tstb(register pdp_regs *p);
extern int waiti(register pdp_regs *p);
extern int xor(register pdp_regs *p);
extern int fis(register pdp_regs *p);