Format for Vector AMO Instructions under AMO major opcode
{reg:[
{bits: 7, name: 0x2f, attr: 'VAMO*'},
{bits: 5, name: 'vs3 / vd', attr: 'source / destination', type: 2},
{bits: 3, name: 'width'},
{bits: 5, name: 'rs1', attr: 'base', type: 4},
{bits: 5, name: 'vs2', attr: 'address', type: 2},
{bits: 1, name: 'vm'},
{bits: 1, name: 'wd'},
{bits: 5, name: 'amoop'},
]}