MBL8089-2 processor equivalent, nmos 8 & 16-bit i/o processor.
MBL 8089 provides two I/O channels, each supporting a transfer rate up to 1.25 Mbyte/sec (2.00 Mbyte/sec) at the standa.
Symbol Type
Name and Function
AO-A15/ DO-D15
I/O Multiplexed Addre.. and Data Bus: The functions of these lines are defined by the
state of SO, 51 and S2 lines. The pins are
floated after reset and when the bus is not acquired. A8-A15 are stable .
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