write to segment (multiple locations) of memory

if you just want 128 locations then you can do that readily in registers addressed as memory table.

stratix 4 may have some 80k registers or so. so 128 x 8 means just over 1%

If you go for ram then you need very wide ram with say just 2 locations but you may need to insert registers for input/output data due to speed issues in which case you better just use registers on their own.

You can also put your values on wires (no registers, based on logic but may violate timing).