perWord          2006 src/dps8/dps8_eis.c void tandd_eis_sample (cpu_state_t * cpup, uint unit, uint perWord)
perWord          2009 src/dps8/dps8_eis.c         unit <= cpu.tanddEISstart || unit % (2 * perWord))
perWord            64 src/dps8/dps8_eis.h void tandd_eis_sample (cpu_state_t * cpup, uint unit, uint perWord);