User`s manual

BL160034 s System Development
/DREQ0, /DREQ1
These are DMA request lines for Z180 DMA Channels 0 and 1.
/INT2
This interrupt line is available to the designer. (/INT0 is reserved and /INT1
is the PLCBus interrupt.)
/RESET
The /RESET signal can be used to manually reset the BL1600. A pushbut-
ton reset switch may be added across pins 9 and 10 of H4.
E
The E signal is useful for customer-designed expansion boards for the
BL1600.
Refer to page 39 of the Zilog Z180 MPU Users Manual for
more information about using E.
PLCBus Port
Header H5 provides the PLCBus signals. The eight data lines on this
header can be used as TTL-level inputs and outputs if the PLCBus is not
otherwise used.
Refer to Appendix E, PLCBus, for more information about
the PLCBus.
$
$