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HP 13255
PROCESSOR (808uA-2) MODULE
~.nual Part NO. 13255-91209
PRIHTED
APR-26-78
rllO- HEWLETT
~~ PACKARD
HP 13255
PROCESSOR (808uA-2) MODULE
~.nual Part NO. 13255-91209
PRIHTED
APR-26-78
r~3 HEWLETT
~!tI PACKARD
HP 13255
PROCESSOR (8080A-2) MODULE
~.nual Part NO. 13255-91209
PRIHTED
APR-26-78
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NOTICE
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Copyright c 1976 by HEWLETT-PACKARD CO~PANY
~OTE: This document Is part Of the 264XX DATA TERMINAL Droduct
series Technical Information Package (HP 13255).
,13255 13255-91209/02
0roc~ssor (S080A-2) Module Rev APR-26-78
1.0 INTRODUCTION.
Th~ Procpssor C~OdOA-2) ~Odule funct1on. as the ~a1n control11nq un1t
for tne termlnal. The processor fetches InstructIons from me_ory ~nd
perfor~s 1/0 operations on otner mOdule. attached to the termInal data
bUS (8ackplane Assembly). The 8080A-2 Pr~ces,or MOdule has the capa-
blllty of accesslnQ e1tner t~@ standard baCKplane bus or a speclal top
~lane bus defined later In tnis sectlon.
2.0 OPERATING PARA~