ZiLOG System 8000 - Page 264

HRM
Zilog
(NOTE: error is not necessarily
unrecoverable. If retries and error
correction is disabled, the error
may be recoverable.)
14 Sector Not Found
15 Write Protect Violation
SMD Timeout errors:
HRM
SB:EC
SB:RT
SB:: RZ
DS:RY
DS:OC
DS::SE
DS:FT
DS:RO
DS:BZ
DS:SEL
DS:SKE
VS':
32
33
34
35
36
37
38
39
40
Timeout - Controller timeout in idle loop
Timeout - waiting for IP & IUS to clear
Timeout - waiting for DMA complete
Timeout - waiting for On-cylinder
Timeout - waiting for Servo clock
Timeout - waiting for Data clock
Timeout - waiting for Sector/index mark
Timeout - waiting for ID sync
Timeout - waiting for Data sync
Error Correction attempted
Retry attempted
Rezero was required to clear a fault
Selected drive ready
Selected drive on cylinder
Selected drive seek error
Selected drive fault
Selected drive read only
Selected dr~ve busy (dual-access only)
Selected ports (port 0 = l.s.bif)
Ports with seek complete (port 0 = l.s.bit)
Volume Select for multi-volume drives (NOT
supported by SADIE"diagnostics; this field
should always be 0)
OF:O+
Servo Offset
Plus
( only
used
if CM:NR
set)
OF:O-
Servo
Offset Minus
(
"
"
)
OF:SE Data Strobe Early
(
" "
)
OF:SL
Data
Str'obe Late
(
"
"
)
INITIALIZING
THE CONTROLLER
At power-up, the SMD controller sets SR:NDT. This indicates
the controller has not been initialized. SR:NDT will remain
on until the following initialization sequence is completed:
1) Host sends CR:IN, then polls SR until SR:BZ is cleared.
When SR:BZ is clear, Host checks SR:ES for self-test
errors. If SR:BZ never clears, the Controller failed
the self test.
A-33
Zilog
A-33