TAPE ADAPTER
The tape adapter is located on the base
I/O
(F2)
card.
It
receives data and controls from the controller and
sends commands, control signals, and write data
to
the
tape unit. The tape adapter also receives status, read
data, and clock signals from the tape unit .
.
Read
data and status are sent
to
the controller on bus
in. An interrupt line (interrupt request
2)
signals the
controller when the tape unit is ready
to
accept data
from the controller or ready
to
give data
to
the
controller. The following illustration shows the control,
data, command, status, and interrupt lines connecting
the tape unit
to
the controller via the tape adapter.
Tape
Unit
r------------------,
I
J
Data an
,
Controls
..
and
Co~trOIS
Commands
;>
">
-">
!y
....
Controller
Base
I/O
I
Tape Control
Tape Drive
(tape adapter)
I
Card
d
Data Commands
Data and
I
~
<'
~
f'......
,
G2
F2
.
~
....
'Data, Status
Data, Clocks Data and
Controls
and Status Status
and Interrupts
i
L
__________________
_
440
"'-...-
/
,
"'J
./
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