3 ms·
> i.e. LOCK XCHG with the Intel mnemonics. Didn't all XCHG with memory operands have an implicit LOCK prefix on Intel 8086?
by cesarb 3y ago
> i.e. LOCK XCHG with the Intel mnemonics.
Didn't all XCHG with memory operands have an implicit LOCK prefix on Intel 8086?
- adrian_b 3y agoOnly since Intel 80286 (1982). On Intel 8086/8088 and 80186/80188 an explicit LOCK prefix is required.