Neg not ror routine (manual packing )

[haZl0oh]

MOV BL,88
NEG BL
ROR BL,4
NOT BL
XOR BL,AL
NOT BL
ROR BL,4
NEG BL
MOV EAX, "start of your code to crypt"
INC BL
XOR BYTE PTR DS:[EAX],BL <<<<<<<<<<< *theseadress
INC EAX
CMP EAX,"end of your code to crypt"
JLE adress of *theseadress

<<<<<<<<<<<
any kind of jump to your OEP