ZiLOG System 8000 Hardware Reference Manual

HRM
Zilog
Table
4-23
Master Interrupt
Control
Register, Bit Definitions
BIT
NAME DEFINITION
Bit
0
MIE
Master
interrupt
enabled
Bit
IE
Interrupt enabled
Bit
2
DLe
Disable
lower chain
Bit
3
Not
defined
Bit
4
Not defined
Bit
5
Not defined
Bit
6 IUS Interrupt under
service
Bit
7
IP
Interrupt
pending
HRM
Table 4-24 Tape Controller to Drive Interface Signals
SIGNAL DEFINITION
RWD\ Rewinds the tape
REV\ Moves the tape.backwards
FWD\ Moves the tape forward
WEN\ Enables writing and erasing on the tape
WDE\ Enables sending of write-data strobes and
the writing of data on the tape
WNZ\ Serial data to be w~itten to the tape
drive
TR1\,TR2\ Select tracks during read, write, and
erase track operation, according to
following code:
4-53
Zilog
4-53

ZiLOG System 8000 Specifications

General

Brand	ZiLOG
Model	System 8000
Category	Desktop
Language	English