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Array index in source register is checked against upper and lower bounds in memory source. The first word located at “limit” is the lower boundary and the word at “limit+2” is the upper array bound. Interrupt 5 occurs if the source value is less than or higher than the source.
Usage:
BOUND src,limit ;
Modifies flags:
none
Clocks | Size | |||||
---|---|---|---|---|---|---|
Operands | 808x | 286 | 386 | 486 | Bytes | |
reg16,mem32 | 3 | 2 | 2 | 1 | 2 | |
reg32,mem64 | 9+EA | 7 | 6 | 1 | 2-4 | (W88=13+EA) |