4 ms·
>The "AND NOT" instruction is interesting for using a mask to clear bits. which is why it is called "BIC" on the ARM. PDP-11 (1970) has BIC (dst & ~src) and BI
by brucehoult 3y ago
>The "AND NOT" instruction is interesting for using a mask to clear bits. which is why it is called "BIC" on the ARM.
PDP-11 (1970) has BIC (dst & ~src) and BIS (dst | src) as its only boolean operations with full addressing modes, plus XOR in reg<-mem form only. VAX (1977) also has only BIC, BIS, and XOR.