Sharp MZ-8BI03 Service Manual page 26

Input terminals of PlO
IC12
@
Same signal as A 1 (CPU bus)
,
® Same signal as AO (CPU bus)
@
Same signal as
RC
(CPU bus)
••
@ Same signal as IORa (CPU bus)
@ Same signal as MI (CPU bus)
@
Same signal as IEI (CPU bus'
@ Same signal as BUSt/I (CPU bus)
In BASIC ready status At transmission of data to GP·IB At receiving data in slave mode
IC13
@
Constant L hivel
Outputs positive pulse of
Constant L level
about 5llsec.
,
IC13
<I}
Constant H level Constant H level Outputs negative pulse of
about 500llSec .
.
,
26