Inferno #08 30 ноября 2005

Софт

Softinka - a description and history of the program to work with hard disk HDDoctor v0.9.

                 Changes

0.9, 11.29.2005:
+ For CD-ROM can be regarded as a table of sessions,
if you enter the number of cylinders FFFF (more precisely,
FFxx). Table as follows:
 0 2 length of table in bytes (first

     byte length, then junior)
2 a number of the first session
 3 a number of the last session

  Further, for each session:

  0 1 is empty

  1 1 type of session

  2 Number 1 session

  3 1 is empty

  4 4 number sector of the session (first

      byte)
The team works with either the 2 nd time, or
after reading the sector with the CD!

0.8 (thanx to Jason Frost, AnoNik, SMT):
# 08-team return.
-Values ​​for the Device control register SMUC
corrected.

0.7 (thanx to ZET-9, Kury):
-Team # 08 and # 0C removed, instead of them
Reset to Device control register.

0.6 (thanx to SMT, ZET-9, Budder):
-Team # 08 (reset) and # 0C (withdrawal relief)
were given in reverse order.
, After the initialization is not read
Identification Sector - Team # EC no
was completed (it was visible only under
emulator!).
+ You can see the ID package:
Press Break after initialization
device. Packet length 512 bytes.

0.5 (big thanx to SMT !!!):
* Enter "R" no longer needed.
-Fixed initialization and reading from the CD.
+ When you select CD-ROM it is completely
reset - you probably know
situation where the CD-ROM included in the incomprehensible
state, and no program of its more
does not see? Now this will not happen!
Fixed-length sectors on CD (2k).
+ You can set the speed of CD (1x or 8x).
The disc is no longer burst! Speed
installed after reading
sector. Notice at the hearing.
+ Because many in the IDE-controller
wound reset signal from the computer, and
ZX other programs for the CD is not
set speed (but not
reset CD-ROM), then provides output
in TR-DOS on ssA ("STOP"), then to
run other programs for CD (CD-Walk
or WDC).

0.4:
+ Supported CD-ROM!!!
+ Read / write operations can be interrupted
click Space.
+ For ssS can save the current sector to
diskette with the file name type Y1222233.0,
where Y - mode LBA, 1 - head, 2222 -
cylinder, 33 - sector (in this case
1222233 - LBA-address), 0 - number of device
on the loop.
+ For ssL can download this file
floppy disk. In this case, the file name is checked for
correspondence is entered into the address field
sector (the device is selected, but not
initialized! "), after which the sector with
screw is read into the buffer of the old sector "
(For a partial restore
by cs9, cs0), and the file from a floppy disk - in the buffer
"New Sector" (and now it can be easily
write to the screw buttons csEnt).
+ Cs9 - retrieving information from
buffer of the old sector of the forward (and cs0
was - back).
* Cs0 not fixated (cs9 too).
+ When the boundaries of the sector
are invited to download the next or
the previous sector (Break - cancel).
+ On the curb (or on the curb - who like:)
output error:
 red = aborted;
 white = Invalid file name.

0.3:
-Error cs0.
* Save not ssS, but by csEnt.


                 Description


   Normal diskdoktor only on the screw (and
CD-ROM). Sectors on the screw 512-byte (for
CD-ROM 2048-byte). Due to the different
lichestva sectors per track for different
screws, I prefer to realize the download of
one sector. (Screws fast, so that
rmozov in this case does not.) coordinates are
third sector are introduced in the column on the left of
dump (when you run the dump has not yet
appeared, it appears after a successful reading
of the sector). On the Enter button options
accepted - and there chtenie.Pro reading
of editing and below.


             The parameters are:

DRV - the device number. 0 = MASTER, 1 = SLAVE.

   If you enter something in the field of this figure,
then the selected device directly proinitsiali
ziruetsya (by a strange algorithm I
borrowed from Dmitri Avryaty, and he - of
Driver iS-DOS). If the initialization
not obtained (vyasiiiim. ..), then click
Space process can be interrupted.

LBA - enabled (Y) or off (N) mode
Addressing LBA. (For CD-ROMs choice here
speed: 1x or 8x.)

   The numbering of sectors in LBA mode Sauveur
Shannon drugaya.V conventional (legacy) mode
(LBA = N) and Gaza, and the cylinder and head - all
had their limits of variation, which in
written on the body of the screw and which can be
be read by software from Digney
statistical information of screw (sometimes true,
This diagnostic information is reported
lie). Sector were numbered from 1, Qi
The cylinder and head - from 0. When reading a large
volumes of data, these data were taken in order
Ke increasing numbers of sectors, and when
these numbers came to an end, took the 1 st sector on
the next head, and ended when the bare
FRI, then proceed to the next cylinder.
Recalculation of absolute numbers in these sectors
three parameters are fairly napryazhny.

   A mode LBA = Y (now on ATA std
the mouth is the only permitted method)
you just need to specify an absolute number.
Number (from 0 to skolkototam) spreads
Registers sector (there are flying low 8
bits), the cylinder (there are flying bits 8 .. 23) and
head (bits 24 .. 27).

   For particularly tough screws, which weigh
more than 32G, provides a broader
48-bit addressing, which goes in two steps.
That is, it is they have provided, and in
my program is not available. I
there is such a screw, but I turned off the bridge
this regime, since it does not even understand
 I mi:)

   (Why 32G? Because more than 64 mi
sectors per track does not understand! With
responsibly, screws CHS addressing wider
64 sectors are not available. Of course, the local
cally sector have no relation
of the physical, the number of which we
with you no one will say.)

head - head number or high-order bits LBA.

cyl - cylinder number or LBA bits mean
(A cylinder over head! So get
is sikos-nakos).

sec - number of sectors or lower bits LBA.


   All numbers are hexadecimal.


   So, you initialize your screw
(DRV), introduced a sector number and press Enter.
Reads the sector. In the source model
zhno choose the read / write mode: poll
DRQ to each byte, or just before
the whole sector. I gathered you a version in which
swarm in front of everyone. By the way, the ports in this ver
these scheme Nemo. To select other
ports, climb into the source code, where their numbers on
conspicuous place. There's even a mode smuc = 1,
which ports are available only in TR-DOS.
Information taken from an article by Vega (Abs @ ts "
# 21).

   To assemble version with its spirit
kami, make, make it debug = 0. You by
need the avtosborschik mrip *. H (it lies on
each corner, for example, is attached to
IG # 5).

   Vot.Vash screw, as long as it was, had assumed
a thief in the sector, and the program shows on screen
half of this sector (transfer to another
half - PgUp / PgDn, and it is possible arrows).
In left field - the numbers in the right - letters.
The transition from field to field - click Extend.
Still, as you can see on the screen height
vetilis values ​​read from the two major
device registers: STAT (register state
scattering, normally after a successful operation long
women be equal to # 50, # 52, or if the screw with
obschil of the index hole - my regulator
Approx reports) and ERR (error register in the normal
IU is # 00).


   STAT bits are:
D7 - BSY (employment);
D6 - DRDY (ready);
D5 - device fault (something like a breakup);
D4 - once meant that locate the
track, but now it means nepomnyuchto
about the parallel execution of commands
(Better naplyuyte on this bit);
D3 - DRQ (data request);
D2, D1 - present are not defined (used to be:)
including referred to the index hole);
D0 - ERR (error occurred).


   ERR bits are (for "Abs @ ZU):
D7 - found bad sector header;
D6 - error in data;
D4 - Sector not found;
D2 - aborted, or that there are no
Coy operations;
D1 - Not Found lane 0;
D0 - Not Found some rubbish after
header sector.


        And now poredaktiruem ...


   In the left field allowed for the preservation
screw (a combination of csEnt). In the right band gap
scheno. Back in left field you can click L ne
go over the choice of the sector (see the beginning of the 
description of; Break - deselect sector). In OS

experimentally control and there, and there are not very
different. When something type of
changes podsvechivayutsya.Kogda erase (cs0
or cs9), takes the old value of bytes.


   ssQ and ssW (remember alasm and protreker:)
shift and widen the bytes.



   My source code looking for here, I'm not greedy
:) It is convenient at its base to experiment
procedures HDDRESET, READ and WRITE.

Alone Coder