GE CT-9800

GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM
Rev. 1 Direction 18000
8-5-5
d. Examine the contents of accumulator 1, which was loaded with the Drive Status by the DIB command at
location 101, by typing the underlined:
’LF’
! 1A zzzzzz ’LF’
!
where zzzzzz is the contents of accumulator 1 in octal. Convert this to individual bits and decode using
the following table.
DRIVE STATUS
INV
ST
0
RES
1
TSP
2
RDY
3
BSY
4
OFF
5
WR
DIS
67
ILL
ADR
8
ILL
CMD
9
DC
FLT
10
UNS
11
POS
FLT
12
CLK
FLT
13
WR
FLT
14
DRV
FLT
15
Bits Name Meaning when 1
0 Invalid status The command channel is busy and bits 5-6 and 8-15 should be ignored.
1 Reserved The drive is reserved by the other processor (there is no other processor in a GE
CT 9800 system).
2 Trespassed One of the drives was trespassed upon by the other processor (there is no other
processor in a GE CT 9800 system).
3 Ready The drive is ready to accept commands.
4 Busy The drive is busy executing a position command, or reporting an aborted seek or
a trespass by the other processor.
5 Offset The positioner is offset forward or reverse, i.e. the servo head is offset.
6 Write disable The write circuits are disabled, i.e., the WRITE ENABLE switch on the drive is
turned off.
7 --- Reserved for future use.
8 Invalid address The surface of cylinder capacity of the drive was exceeded,
(18 surfaces, 410 cylinders).