ZiLOG System 8000 - Page 304

HRM
EXAMPLE:
RLONG 1 0 516 3 2 20
Zilog
HRM
Reads 512 data bytes plus 4 checksum bytes into memory
beginning. at <1>0. The disk address' is cylll 3, head#
2, sector# 20.
COMMAND: RSTATUS
DESCRIPTION:
The
SMD controller status port is read and displayed.
EXAM.PLE:
RSTAT
COMMAND: SEEK cyl
.D ESC RIPT ION :
Issues the SEEK packet command to the SMD controller.
If cyl = FFFFH (minus one), the controller rezeroes the
drive and resets any drive fault
q
•
If cyl is >= 0, the
controller seeks to that cylinder.
Ex"AMPLE:
SEEK FFFFH
SEEK 300
The first SEEK rezeroes the current disk drive and
resets a drive fault.
The second SEEK positi~ns the heads to cylinder 300.
COMMAND: SIZE
DESCRIPTION:
Issues the SIZE packet command to the SMD controller.
The drive size values returned by the controller
replace maxcyl, maxhead, and maxsec. These values are
stored in the table of drive size parameters for the
current unit. In addition, the format parameters are
changed to correspond to the new size values. See the
SUNIT command for a description of how the format
parameters change.
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Zi10g
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