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DiskView.DOC
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1991-10-29
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DiskView.
This program dispalys a map of the blocks allocated for the files and
directories on a disk. It consists of a grid showing all the 1760 blocks of a
disk. The x axis represents the 80 cylinders ( 160 tracks ) numbered from 0
to 79, the y axis lists the 11 blocks from 0 to 10 for each side for a total
of 22 blocks per cylinder.
Blocks 0 and 1 are reserved for the boot block or a virus...! Block 880
(cylinder 40, block 0) is for the root directory.
Menu options.
1- Project
a) View : Colors each box of the grid for each block that is used on the
disk.
b) Reset: Erases all boxes.
c) All : If set, will show all blocks when View is selected or will clear
all boxes if Reset is selected.
d) Erase: Resets the screen to startup state.
e) Quit : Guess what...?
2- Drive
Choose the drive to be displayed.
Usage.
You must first select the drive to be displayed in the block grid with the
Drive menu. The name of the selected drive will be displayed at the left of
the screen. Click on the white box for the root dir (block 880 in the center
of the first line). The disk name will then be displayed in the top of the
screen and a number of boxes will be colored. A box with only one color
represents a directory block, a block with two colors is file's header block
and contains the block numbers for this file.
To display info on the colored blocks, simply click on the box and the
description of that block will be displayed. When the box is a header block,
all the blocks for this file will be colored in the same colors as the header
blocks but in a way to set them appart from the header block. If ALL is
selected, all the disk contents will be displayed.
This program is written in assembler, it works from either the CLI or
Workbench.
Comments, questions or suggestions are welcome.
Claude Abraham
1999 Place Jules Léger
St-Bruno, QC, Canada
J3V 5M6