A portable electronic device 14 wherein said locus of said frame buffer comprises a row of {TAIL ~ pixels} of {HEAD ~ memory} within said frame buffer 
A portable electronic device 14 wherein said locus of said frame buffer comprises a row of { TAIL ~ pixels } of { HEAD ~ memory } within said frame buffer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH