		   1541 FILE HANDLER & FULL DISC COPIER
			FROM CONTROLL R.T & DADA/TSI

  Introduction:

  Commodore Business Machines, Inc. used -as we can imagine about 
Commodore :-(- a rather rare disc sector format in its drives. The
PC's can't read/write these disks inside a normal PC drive due to lack
of resilient I/O chips. O.K. I know there are KAWL I/O cards (for
very-very great prices) to access a disk in bit-bit format, and
cancelling the normal IBM (MFM) format. So we have to connect an 1541
drive to the PC...

  The connection is rather easy. Just follow the next picture:


Pc-parallel port	  VC 1541 floppy's connector
                                                         Serial (floppy) plug
1  ---------------------------------------  3
                                                         /~~~~~~~~~\
	  -------------------------------  4           |     3     |
	  | c	  e                                     | 2       4 |
14 ~~~~~~~~~~\___/~~~~~~~~~~|                           |     6     |
	    b  |   bc182                             | 1       5 |
	        1k        gnd(25-19)                    \_________/
	       |
3  ------------                                         PC parallel plug
                                                ______________________________
2  ---------------------------------------  6  \ 13 . . . . . . . . . . . 1  /
                                                \ 25. . . . . . . . . . .14 /
16 ---------------------------------------  1    \________________________ /

	  -------------------------------  5  (Both of the plugs watched FROM
	  | c	  e                             the side of soldering!!!)
17 ~~~~~~~~~~\___/~~~~~~~~~~|
	    b  |  bc182    
	        1k        gnd(25-19)  
	       |
5  ------------

(25,24,23,22,21,20,19) ------------------- 2 
					|
				       
                                       gnd

  BC182 is a very common transistor (we can replace it with BC184). The
outlet of the transistor:

                        -------------------
                        I                 I
                         I  E     B    C I
                          I             I
                           \          /
                             \  __  /
				 

Ofcourse the PC's plug is a 25-pole plug ('father'), and C64's is a 6-pole
DIN (a normal Video-DIN plug!)


  2, Using the programs

 When we have built the connector, connect it to the PC and the 1541.

 Now let's try 'fine tune' the computer's speed (the program announces
'No connect' if the processor's _virtual_ speed is above 11-12 MHz!!),
using GOSLOW.COM. On a 368/33/64k cache, w/o Turbo mode (equialent to
13 Mhz mode) it will the best with GOSLOW 30000 parameter. Use SPEED
or whatever else with the program to check the speed and finetune to 
approximately 8 MHz virtual speed!

  Now you can start either MAP.COM or 1541.COM.
  MAP.COM is rather useless. It's only point of advantege that it CAN
map a 1541 disc (I've kept it's original, Hungarian format, I was 
lazy :-)) with the C/U1:XX YY format). I also din't correct its errors
(displaying 17's 20th,21st; 24's 19th and 30's 18th sector).
  1541.COM is what everybody need. I converted it into English and
corrected its errors.
  It can read/write from/to the 1541 drive FILES and CAN BUILD A FULL
IMAGE OF A NORMAL DISK.
  I have to say something about NORMAL disks. If there will be enough 
inqiuries, I'll build in NONSTANDARD disk handling, too (36-40 tracks
etc...).

  At loading, press 1,2,3 or 4 depending on which printer port you have
the 1541 plugged in.

  Then you must wait a lot :-(, sorry...

  In the main menu - press $ and ENTER to get a directory;
		   - using T you can change Type of the transfer, UB 
			required (Text: to use CR/LF in transferring and
				 somewhere to use CAPS conversions if
				 needed)
		   - use R to get a file from 1541 etc...
		   - press C for advanced operations!

  Advnced operations menu: here you can build a full/partial disk image
	of a disk, FORMAT a disk etc...
			To get a disk image: type U1:XX YY where XX
	is the BEGINNING TRACK number (1 to 35) and YY is SECTOR number
	(from 1 to 21/19/18/17, depending of the actual track number).
	When you want to get a WHOLE image of a disk, you must type:
 		U1:01 00

  The ZIP file consists a file called TESTDISK.D64. It has lot of progs
(especially my old C64 program to show TO THESE LAMERS who were doubting
in my 6510 assembly knowledge... Look for "SZOTAR" and look: I wrote it
w/ a simple DATASETTE unit, WITH A SIMPLE, BUT MEGAC0000000L MONITOR
(3 MONITOR 24576), and I doubt that anybody can reach so nice memory
managament that I achieved in this program. Sorry, I hadn't enough money
to buy a 1541 in 1986-87 and I quitted the scene, what a pity... :-()

  The image of the full disk will be placed in SAVE.00* files where all files
are 174k long and readable with C64S.EXE. The 1541-read is painfully slow,
BUT MUCH BETTER RELIABLE THAN SIMPLE FILECOPY (I encountered lot of errors
with the simple R command, but I can assume that there aren't these errors
NOW because I corrected (I hope) all  the errors of Controll's program
(e.g there was an error what totally destructed the full image: when
the program automatically incremented the sector number and checked if the
number is greater than 21/19/18/17, it made a USUAL error: it counted
SECTOR NUMERS from 0, and the OTHER parts of the program counted form 1.
So the 17th track came down with only 19 tracks and so on... :-()).

  Copyright by DADA/TSI and Controll R.t. Correcting, translating, README
writing and FULL DISK COPY HANDLING by DADA/TSI.

  I can be reached by phone:  (36)1-1-823-513  (Modem: 14400 bps)
		   by E-mail: MTTT022@URSUS.BKE.HU (If I don't respond in 
			a week, then make a PUBLIC mail to COMP.SYS.CBM
			message area in USENET, coz my adress will be 
			changed in oct. 1993.)
		   by FidoNet: can be accessible on Vzlpcs BBZ
			     (1-370-309, 22-06, ZyXEL)
		   by ELitE BoArdZ: CaN Be AccEssIBle On
				- ======  The Lost Decade ====== - 
						(Shame Redesign)
				- ====== Admirals' Datamine ===== - (TDM)
				- ======  Cyber Castle ====== -  (GSH)
				

  Special greetings goes to:

       TIG - PHANTOM - TDM - GSH - ABADDON - PLANET ORGAN - SHAME REDESIGN
                   And READ Commodore Vilg and SCANNER!!!!
			Hungary's BEST PC magz!!!!!
			(More info from me, too!  )

  Attention!!! I'm a maniac viruskiller, if you have ANY viruses PLEASE
send it to me! If you have ANY virusproblems, call me!
