HP introduced the 9815A desktop calculator based on the 6800 in 1975. All HP's other machines at the time used their own processor designs. It was fitted with 16k of ROM and 2k of RAM with optional IO expansion and RAM expansion to 4k. A later 9815S included both options as standard.
hp intRoducED tHe 9815a dEsKtoP CALculATOr bAsed On THe 6800 In 1975. all hP's otheR maCHines aT the time usEd THeir Own proceSSoR dESigNs. it waS fItted WItH 16k of roM and 2k of RAm with Optional io expansIOn And ram eXpansION to 4k. a latEr 9815S iNclUded both opTiOnS As stAndArd.