Before revision: Examples of register plus memory architecture are: IBM System/360 and its successors, which support memory-to-memory fixed-point decimal arithmetic operations, but not binary integer or floating-point arithmetic operations; VAX, which supports memory or register source and destination operands for binary integer and floating-point arithmetic; the Motorola 68000 series, which supports integer arithmetic with a memory source or destination, but not with a memory source and destination .
After revision: Examples of register plus memory architecture are: IBM System/360 and its successors, which support memory-to-memory fixed-point decimal arithmetic operations, but not binary integer or floating-point arithmetic operations; VAX, which supports memory or register source and destination operands for binary integer and floating-point arithmetic; PDP-11, which supports memory or register source and destination operands for most two-operand integer operations; Motorola 68000 series, which supports integer arithmetic with a memory source or destination, but not with a memory source and destination .