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DOS 3.3 Dump
ref file: dos33dmp.zip
Contents of dos33dmp.zip
dos33.dmp
dos33dmpinfo.txt (copy of this file)
DOS 3.3 Dump is DOS 3.3 in an Apple II Text file. The purpose
of the the dump file (dos33.dmp)is to make it possible for users
without DOS 3.3 and without any Apple II telecom program to obtain
DOS 3.3 from the net.
Once you have DOS 3.3, you can obtain ADT and have a way to
transfer 5.25" .dsk disk image files.
How to Get DOS 3.3
1. Downloading
Download dos33dmp.zip to your net computer and uncompress it
using WinZIP or some similar utility. You will have dos33.dmp and a
copy of these directions in a .txt file.
2. Transferring DOS 3.3
Note: These directions are for transferring from a PC. They generally
apply to transfers from other computers.
You will need a NULL modem cable to connect the PC and the Apple II.
If you don't have one, you can make your own (see the Csa2 newsgroup
Apple II FAQs http://home.swbell.net/rubywand/Csa2T1TCOM.html ) or buy
a modem cable and NULL modem adaptor.
Note: if you have a genuine Apple Super Serial Card, you do not need a
null modem cable. Simply set the jumper on the card to "terminal"
rather than "modem", and use a standard "straight-through" cable.
Thanks to Greg Bennett for this tip.
PC Setup
On the PC, start a comm program, set it for 300 baud, 8 data bits,
one stop bit and no parity (e.g. 300 baud, "8N1"). You want to send
dos33.dmp using a plain Text (or "ASCII") transfer. Any option to add
a line feed to the end-of-line character should be OFF.
To transfer Text with HyperTerm you click on "Transfer" and
select "Send Text File". In order for this to work well sending files to
the Apple II you must first have defined a connection setup (in Files,
select New Connection). Once you have defined the connection setup, you
save it under some name like "A2at300.ht". From then on, whenever you
start HyperTerm, you can click Files and select Open and pick your
connection setup from a list which will include A2at300.ht and any other
setups you have created.
Note: By the way, the Files menu relates to these connection setups, not to
stuff you want to send. You pick stuff to send (or a directory to receive to)
when you click Transfer and make a choice like Send File or Send Text File.
Once you choose a Transfer activity, you will be able to Browse folders.
Here is an example of a good 300 baud HyperTerm setup (entries to make after
selecting New Connection" under Files):
1- "Phone Number" page
Connect using= Direct to Com 1
Click on Configure and set
Bits per second= 300
Data bits= 8
Parity= None
Stop bits= 1
Flow control= None
(You should not need to change any Advanced settings)
Click OK
Click on the "Settings" page tab
2- "Settings" page
Terminal keys is selected
Emulation= TTY
Backscroll buffer lines= 500
(You should not need to change Terminal Setup)
Click on ASCII Setup
Send line ends with line feeds is _not_ selected
Echo typed characters locally is not selected (probably does not matter)
Line delay= 400 milliseconds
Character delay= 0 milliseconds
Append line feeds ... is not selected
Force incoming data to 7-bit ASCII is _not_ selected
Wrap lines that exceed terminal width is selected
Click OK
Click OK again to finish. Then, click Files and do a Save As to save
the new setup.
Apple II Setup
With no diskette in the drive, do a PR#6. If necessary, do a
Reset to get to the usual BASIC prompt. (The reason for this way of
starting up is that you want a fairly blank system when you transfer
DOS 3.3.)
Set up your serial port (or card) for 300 baud, 8 data bits,
1 stop bit, no parity. Apple II INput needs to be set to your serial
port or card).
IIgs: On a IIgs, Slot 2 must be set to "Modem Port" and the modem cable
must be plugged into the Modem Port (the serial port near the right side
as you face the front of the IIgs). Go to the IIgs Control Panel and
check that Slot 2 is set to "Modem Port". Set Modem Port speed to 300
baud. All of the other settings can be at their default (checked)
settings. Then, enter IN#2.
Note: If Slot 2 was set to "Your Card", you will probably need to turn
OFF the IIgs after changing the setting to "Modem Port" and, then, power
ON again in order for the new setting to take effect.
Other Apple II's: If your Apple II uses a serial board which is not
compatible with the Apple Super Serial Card follow the procedure for your
particular card to set 300 baud, 8 bits, 1 stop bit, no parity. At some
point you should enter IN#x (where x is the Slot your serial card is in).
For an Apple II with a Super Serial Card (or compatible serial card or
port), enter IN#x, where x is the Slot your serial card is in (or the
Slot associated with your built-in serial port). Typically, this will
be Slot 2. Usually, the SSC (or port) will be set for 8 bits, 1 stop bit,
no parity by default. Set the speed to 300 baud by typing the three
characters: Control-A 6 B.
After all of this, your Apple II should be waiting for input and
the PC telecom program should be running and waiting for you to do
something. So, 'Send Text File' dos33.dmp.
Note: Your 'Send Text File' option may automatically show only files
ending with ".txt" as available for sending. If this happens, click
the 'All Files' option in your Send window to find dos33.dmp.
On your Apple II screen, you should see code being entered.
DOS 3.3 is being 'typed in' much as you would type it in from the
keyboard except it is being done via the telecom connection. It
should take roughly 20 minutes to send dos33.dmp. The send should end
with DOS 3.3 installed and the usual BASIC prompt showing on your
Apple II.
Before doing anything else, insert a standard 5.25" double-density
diskette into Drive 1 and enter
INIT HELLO (i.e. type in INIT HELLO and press RETURN).
The drive should spin and your diskette should be INITed.
INIT HELLO for the back of the diskette (as a backup).
When the file dos33.dmp is 'typed in', you get a fairly workable
DOS 3.3 install. However, some vectors are not set and not all
DOS 3.3 software would function. To get a properly set up DOS 3.3,
boot the newly INITed diskette. (You can enter PR#6 to boot a disk
in Slot 6 Drive 1.)
Since there is actually no Hello program (just space for a 'nothing
program' named "HELLO"), running the HELLO program does not do anything.
Booting starts DOS 3.3 and leaves you looking at the BASIC prompt. You can
create a short HELLO program to try out DOS 3.3:
Enter
NEW
then, enter this line of BASIC
10 PRINT "HI!"
and save your program on disk
SAVE HELLO
When you boot this disk, HELLO will be run and
HI!
will appear on the screen. For more about DOS 3.3, see the Csa2 Apple II
FAQs: http://home.swbell.net/rubywand/Csa2DOSMM.html .
Some Q&A
1- Can I use the MS-DOS "mode" and "type" commands to handle the transfer
on the PC side (instead of using HyperTerm or some other PC telecom
program)?
Yes. As suggested by Delfs, you can use the "mode" command to set
up the com port and the "type" command to send a dump file (such as
dos33.dmp).
Under Windows95, 98, etc., open a DOS window. (Or, you can restart in DOS
mode or just boot MS-DOS.) Change Dir to get to the directory containing
dos33.dmp.
Enter the following:
mode comX: baud=300 data=8 parity=n
In the above, replace "X" with the com port# for the com port connected
to the Apple II. For example, if the connection is to COM2,
you would enter ...
mode com2: baud=300 data=8 parity=n
Note: The PC should respond by echoing an abbreviated version of your mode
command on the screen. If you get an error message, it could mean that the
COM port you want to use is committed to some background task. For example,
if you have started a telecom program under Windows and it uses COM2, then,
the mode command will probably not work for COM2 until you shut down the
telecom program.
Note: Aage Rettvin reported a problem with COM port designations under Win98:
i.e. you may need to use "COM4" instead of "COM1" or change Windows naming
of the ports.
When you are ready to start the transfer, enter the "type" command to start
the transfer. For example, taking COM2 as the port connected to the Apple II,
you would enter
type dos33.dmp >com2:
The main reason for not recommending the above is that this sort of
transfer does not allow setting an end-of-line delay. Using HyperTerm (or
a similar PC telecom program) lets you set a small delay (e.g. the 400ms
delay suggested earlier for the HyperTerm setup).
Having a delay at the end of each line send helps to asure that the
computer has time to adjust the display at the end of a line and finish
in time to receive the next character.
At 300 baud, the end of line delay probably is not needed. However,
dos33.dmp is a long file. On a 1MHz Apple II, it seems worthwhile to
take a few extra steps to avoid errors.
2- How do I know my copy of DOS is good?
Several transfers (PC --> Apple IIgs) were tried, including one using
Delfs's approach (above) at 300 baud with the IIgs set at 1MHz, and a
couple using Hyperterm at 2400 baud with the IIgs set at 10MHz (using a
400ms end-of-line delay).
According to checksum tests against the original diskette, the
transfers all seemed to be good. Evidently, the transfer is pretty
reliable at 300 baud.
Below is a program which checks the RWTS code, a part of the
transferred DOS which should remain stable after CATALOG and other
changes. After you INIT a disk, boot the diskette. Enter
NEW
and enter this program:
10 TEXT: HOME
40 FOR I= 45138 TO 45918
50 Z = Z + PEEK (I)
60 NEXT I
70 PRINT "CHECKSUM= ";Z
then SAVE the program as DOSCK
SAVE DOSCK
Now, boot the diskette and run DOSCK
RUN DOSCK
The program will run and display a checksum.
The correct value is 122155.
Note: this checksum is valid only for this particular variant of
DOS 3.3.
Getting the correct value does not guarantee an error-free
transfer; but, the odds are good that conditions which produce errors
in one place would produce at least one error in the portion sampled
by the DOSCK program.
If you get the correct checksum, the rest of the transfer is
likely to be okay.
3- Which variant of DOS 3.3 is transferred?
It is EsDOS II. Most Apple II users stopped using genuine DOS 3.3
in the early 1980's when Beagle released its patch to turn DOS 3.3
into "Prontodos". Prontodos is much speedier than plain DOS 3.3 while
retaining very high compatibility. EsDOS II is a variant of Prontodos.
Rubywand