A contiguous block in data memory. Fixed-point devices contain a block of 128 words in data memory. Data memory contains 512 data pages. Data page 0 is the first page of data memory (addresses 0000h–007Fh); data page 511 is the last page (addresses FF80h–FFFFh). In floating-point devices, data pages are 64K words long. The ’C3x has a total of 256 pages; the ’C4x has a total of 64K (65,536) pages. See also direct addressing.