The Alpha assembler's unaligned load and store instructions operate on arbitrary byte boundaries. They all generate multiple machine-code instructions. They do not raise alignment exceptions.
Unaligned data operations include:
Unaligned Load Quadword (uldq)
Unaligned Store Quadword (ustq)
Unaligned Load Longword (uldl)
Unaligned Store Longword (ustl)
Unaligned Load Word Unsigned (uldwu)
Store Quadword Conditional (stq_c)
Store Longword Conditional (stl_c)