ZX-News #39 18 августа 1997

IS-DOS

Working with IS-DOS - Work with the hard drive in the IS-DOS.

         Work Hard Disk

             in the iS-DOS


  As for TR-DOS, the hard disk drive of the iS-DOS is not much 
different from working with a floppy disk. Although there are 
several specific moments.



  You must first create one (or
several) sub-type of iS-DOS. Select Create partition ... (Recall
that this should be done in the submenu Local partition table). 
Select the ENTER key line from the inscription Unused. The line 
will inscription TR-DOS. SPACE key, select

Type iS-DOS (types of cyclically repeated:
TR-DOS -> Micro DOS -> IsDOS ...), fix the choice by pressing 
ENTER. Now enter volume of sub-section in kilobytes (see

Figure 9).

  1993 Professional Extention NCACB
-97 MOA Shadow Service Monitor 15-06
Analyser V4.00

          Local partition table

                                         

           Create partition ...

         TR-DOS sys-January 31 MB

         TR-DOS sys-February 1931 MB

         TR-DOS sys-March 31 MB

         TR-DOS demki 31 MB

         TR-DOS games1 31 MB

         TR-DOS games2 31 MB

         IsDOS sys4.5 .4097

                                         

                                         

          D. Delete partition ...

                                         

          A. Delete all part

                                         

                                         

          R. Restore from disk

          W. Write to disk

                                         
 Enter number


                  Fig.9


  Company Iskrasoft requires that the volume
section shall not exceed 16,300 KB. In my
opinion, under the system disk can be identified
4 MB, this would be sufficient. To
create a disc the size of 4 MB, you must make some 
calculations. Namely: 4 MB = 4096 KB. The volume of sub-iS-DOS 
with the will be a KB is 4096. This figure something we

enter in response to a query as you type size
subsection. To drive iS-DOS its size,
thus, make 16,384 blocks.


  System iS-DOS, by the way, is not important, "Round" is the 
figure disk capacity, or not. 


  I note that while we just created a subsection, with any 
information we do not recorded and to any device is not

hooking. The next phase - creating a logical structure on the 
hard disk. Communications between the system and hard drive 
provides the driver disk. To date, they developed two pieces, 
the first - MHDD.blk - designed MOA, the second - Zhdd.blk - 
Mikhail Kondratyev, and they say, already has a third ... 


  Get the iS-DOS from a floppy disk (for use with
hard disk is only possible option
Classic). Load the driver into the hard drive
memory for this to highlight the cursor
driver and press ENTER. Make sure you have a memory driver can
running the program or dev.com show.com,
they are usually located in the directory \ UTIL.
Dev.com program can also be configured
Some drivers, including driver
hard drive. Placing the cursor on the left
panel, you can select the driver and the right
panel, you can disable the action of this
driver for this device or, alternatively, connect ("+" symbol 
denotes connection, changes the status of the device

pressing ENTER).


  Which driver you choose?


  MHDD.blk driver allows you to work
it is with devices that are connected in the Shadow Service 
Monitor to the appropriate devices. This means that If the 
device is usually "A" and "B" busy device drivers and device "C"

occupied by RAM-disk driver, the driver
MHDD.blk can only device "D", to
and which must be plugged our sub dos4.5. Can, in principle, to 
reconnect RAM-disk on "E", then in possession MHDD.blk turns 
out to be "C" ... 


  If you decide to use a driver
Zhdd.blk, he can actually communicate with
all eight devices iS-DOS, when
this in the Shadow Monitor, they can not be
connected, although they can be used
eight disk sub-iS-DOS time.


  Proceeding from these considerations, the firm Scorpio now 
when partitioning the hard drive abandoned the driver MHDD.blk 
and steel set Zhdd.blk.



  We examine the same and we work with more
is this driver.


  Together with the driver Zhdd.blk in one application package 
are also available program Zhddsv.com (or ZhddSave.com),

Zhddcon.com and Zhddserv.com. The first program writes to disk 
iS-DOS image file system in the form ????_ dos.swp, where 
instead of ?? can be any four admissible

for the file name of the symbol. The second program
creates a disk boot sector, and
connects to it the file-system image.
The third program is designed for the driver settings Zhdd.blk.


  Run it. This will display a small panel (see Figure 10), in


                                         
 HELP USER VIEW EDIT COPY RENAME crDIR DELETE MENU MASK

                                         

   A:. \ ZHDD C: Ram-768
 .
 HELP
 Zhdd blk
 Zhddcon com A: ----- Zhddserv com B: ----- Zhddsv com C: -----
                 D: sys4.5

                 E: <none>

                 F: <none>

                 G: <none>

                 H: <none>



                        No User Files



                  Fig.10

which the cursor can be selected
Some sub-iS-DOS. In our case, when the program starts 
Zhddserv.com all device from the "D" to "H" had the status of 
none, ie, "Nothing." By clicking ENTER, we have chosen Subpart 
dos4.5. Pressing ENTER on the already other devices, we can 
connect other four sub-sections. At the end of

settings, press SS / A.


  Note that the RAM-disk driver edsco-.blk uses eight banks of 
memory only at the last moment the rest of the memory has been 
filled. Therefore, you must now be used RAM-disk size does not 
block 832, as earlier, and 768 (832-64 = 768). Make these 
changes to the file autoexec.bat: 

Q: SERVICE \ create Ram-768 / -c/v0/d768/c0/b2


  But it is necessary in cases where
not loaded image file RAM-disk (the file
with the extension. img) because image.com program before 
downloading the image creates a RAM-disk itself. 


  Unfortunately, the connected hard drive
RAM-disk drivers sometimes make mistakes,
therefore recommend the establishment of M. Kondrat
RAM-disk size of 384 blocks, in which case you can even adjust 
the copiers iS-DOS (filecopy.com, copy25.com,

from_trd.com, to_trd.com, from_msd.com,
to_msd.com) program for copytune.com
work with 80-Kbyte buffer, which is usually allocated by the 
upper memory. 


  Now create a logical structure
drive "D". Call the utility create.com, which is usually 
located in the subdirectory \ SERVICE. Set the name of the 
device is connected to our drive-clause, ie "D", then set the 
parameters of the device: Sec Size (sector size) - 256 (!) 
Bytes, Dev Size (size of the device) - 16384 (remember?) Block 
(Fig. 11). If we have an 

                                         

Drive: D Name: IsDOS4.5
Retry: 1 Double
Check N Tracks: 80
Exist: ask Sec Size: 256
Parameters boot: No boot
Create Dev Size: 16384
Save Dir Size: 10
Exit Segmented

                         Quit


                                         

                                       


                  Fig.11

free to choose the size of sub-section, for example, 5000 KB, 
the size of the disk is calculated the formula: 5000 * 4.4 = 
19996. Program create.com "adjust" it is important to

19992. After successful completion of the
the device can work with it, as with
regular floppy disk.


  Now create a system boot
disc. Copy the entire system floppy disk
on dos4.5. To do this, go out into the root directory of the 
floppy disk and run the program coca.com (from the menu or by 
"hot key" or through the monitor command line). Use programs 
128.som and abc.com impossible, since then copy and information 
on a floppy disk, ie disk will become the size of 3200 blocks. 
But if you have a systematic sub-iS-DOS occupies 800 KB, then 
go ahead copy of these programs.



  And here it is, perhaps, the most important advantage of the 
hard drive: Now you do not need to load the RAM-disk with the 
necessary for work files, because now the rate of

exchange of information with the hard disk is almost the same 
as with the RAM-disk! 


  But here is a floppy disk copy. Now on
key "9" to call the menu and set gmen
system, quick, and the current device
(Or System, Quick and Current).
I recommend it for the first two "D", and
third - to "C". If you have used
tekctovym editor iS-EDIT, then you can often create a temporary
file edit_aux.wet, which may leave
empty space in the middle of the space occupied by the 
information by segmenting in this files. And since we have a 
temporary device - "C", then this file on it and will be 
created. 


  Now exit this menu and enter the
directory D: \ SERVICE. Vyzovte monitor command prompt and type 
this command: 

Zhddsv is

while on the disk will create a file-system image named 
is_dos.swp. By pressing "6" to run the program and click 
rename.com SS / ENTER. Make sure at the same time to image file 
was continuous (Contigious), otherwise it will be impossible to 
connect to boot sector.



  All in the same monitor command line
type:

Zhddcon is

then produce a "cold" restart
computer.


  Now go to the Shadow Monitor in the menu
Hard disk utility and connect to the device "D" our system 
Subpart dos4.5. 


  The package of programs for the iS-DOS-Winchester
should also include the utility for TR-DOS
called Run_Me!. B ("Start Me"! -
Eng.). Running on the TR-DOS disk, this
program creates a zero-path in
fifteenth sector special account. Usually
This sector is used to store variables
Shadow Monitor, which can be loaded when resetting the 
computer. But now, to restart while the checkbox

Set Up / Monitor / Autoconfig (state ON),
when attempting to read from the disk configuration
Monitor the following will occur: at the bottom of the screen 
will appear: Press ENTER to boot Is-Dos, just below the crawl 
line processing (see Figure 12). Until it reached 


                                 

        Press ENTER to boot Is-Dos

                                 


                                 


                  Fig.12

to the end, you can press ENTER,
with the label change to Starting
Is-Dos .., then, did not take place, and second,
how to run the system iS-DOS, and will
run file autoexec.bat. If you
press any other key, or nothing
will not push up until a line is not crawls to the end, will 
yield main menu system, as if after

avtokonfigugirovaniya.


  After a single run the program
Run_Me!. B can be erased from the floppy.


  In conclusion, we present a couple of useful files used by me.

autoexec.bat

Q: UTIL \ date
Q: SERVICE \ create Ram-768 / -c/v0/d768/c0/b2

As usual, the file requests in early
current date, then creates a RAM-disk. Notice that now commands 
L_Q, L_T and L_C not required to specify the current, 
consistent and fast devices. 


  By the way, the owners of CMOS-hours is not
need the first line of this file, because
Driver Zhdd.blk in its work with
hard drive at the same time works with the date
reading it from the CMOS-clock and notes in
system.

is_dos.bat

Q: UTIL \ delete Q: SERVICE \ is_dos.swp
Q: SERVICE \ Zhddsv Q: SERVICE \ is
Q: SERVICE \ Zhddcon Q: SERVICE \ is

A re-creates the file system from scratch.
Need it to by setting
resident in memory, it was possible to
they would no longer install every time
during subsequent system boot, and load already configured 
system. 


  Remember a couple of things: the appointment of a new section 
of the program Zhd `Serv.com for his work on subsequent 
downloads of the system must also use this program to reinstall 
the system again, with the establishment in the hard drive of 
any new sub-type to follow the normal work iS-DOS needs to be 
done "cold" restart your computer, otherwise the system you are 
bombarded with error messages. 


  Oh, and do so at the end, the council writing
in iS-EDIT'e. If you are working with texts
on the hard drive, then use the resident utility segm80.res, 
which keeps track segmented approach to file

85 and segments, and time will give you this
know.