To display the contents of a particular block on a specified
device.
HINTS/RESTRICTIONS:
BLKDSP may be run from any account on the system and will
function for any device on the system.
BLKDSP will display the block of information in a similar
format to DUMP BLOCK, but will wait when the screen is full
(one-half a block).
FORMAT:
.BLKDSP {device:}block-number
The device may be any device that the driver is resident for
and is currently on the system. Multiple digit drive numbers are
permitted.
Block number is the block you wish to display. The entry may
be in either hex or octal depending on the current SETting. A hex
block number must start with a numeric character. For example
block F43 must be entered as 0F43. If the block number entry does
not agree with the current SETting for hex or octal, the input
block number will be incorrect.
DEFAULTS:
If no device is specified, then BLKDSP will default to the
device you are currently logged into.
OPERATION:
1. Type BLKDSP followed by the device and block number you
wish to search for.
2. BLKDSP will display the block in a format similar to
DUMP BLOCK (see System Commands Reference Manual for
DUMP). The display will halt after 256 bytes are
displayed and wait your command.
3. BLKDSP will then display a word in reverse video with
the different translations of the word on the 22nd line
1
of the screen. By use of the arrow keys, or the control
characters (^H,^J,^K,^L) you can diplay different words.
4. You may display the other half the block by using
Control-T to page ahead and Control-R to page back.
Using the arrow key at the bottom of the displayed
screen will only go to the top of the screen and not to
the next page.
5. If you wish to display the longword, highlight the first
block of the longword, and type an <L>, the longword
will be displayed on the 24 line of the screen. Type any
key to continue.
6. To exit BLKDSP type a <Q> and you will return to AMOSL.
ERRORS:
A. ^specification error:
Your command line was of incorrect format. The ^
points to the location that BLKDSP does not understand.
B. ?Block number too large for this device
The number you have entered is larger than the
number of blocks on the specified, or default device.
C. ?Block number specified is a negative octal number
The number you have entered equates to a negative
octal number. Check the block and try again.
D. All other error messages are from AMOSL operating system
CHARACTERISTICS:
You can use BLKDSP for any block on any mounted device
BLKDSP is both re-entrant and reusable.
BLKDSP is control C (^C) interruptable, if CTRLC is SET on
the user's terminal.
BLKDSP.LIT was written by:
Quaker State Oil Refining Corp.
Research Center
Oil City, PA 16301 - April 1984
