I1541.A                                        Copyright 1994-96 by L.G.Software

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                                   Version 1.0

The purpose of this code is to supply a user interface to read and write data on
the IEC bus of Commodore C64 devices.

You can copy and distribute this software. If you modify it, please write a note
on what and why you have modified, and send a well-documented copy to me.

If you have any problems with this program contact me to fix the bugs, possibly
with a detailed explanation of the kind of problem you have experienced and a
complete description of your machine.

I DECLINE ALL RESPONSABILITIES ABOUT MISFUNCTION OR DAMAGES CAUSED BY THIS
SOFTWARE.

********************************************************************************
WARNING: This software uses the timer interrupt when running. This may delay the
         system clock (the DOS clock is stopped during some operations). In any
         case the CMOS clock is not affected by the operations.
********************************************************************************

For installing the interface as a device driver, add this line in your
CONFIG.SYS file:

        device c:\dos\i1541.com

The directory name c:\dos\ is an example and has to be replaced with the path
containing the i1541.com file.

If you don't want to install the program as a device driver, simply run the
program at the command line or from within your AUTOEXEC.BAT file.

If the connector cable has the connection between pin 2 and pin 15, the
detection routine will automatically find the cable.

If you don't have this connection or if you have two or more cables with this
properties on your LPT ports, you must specify on which port the I1541 has to
work on.

The program accepts one numeric parameter (in the range 1 to 3), intended to
force usage of a specific LPT port. Example:

        device c:\dos\i1541.com 3       forces usage of LPT port 3

or, for command line users

        i1541.com 2                     forces usage of LPT port 2

This parameter overrides auto detection.

If you have any troubles in installation (older versions of DOS cannot handle a
EXE or COM file in CONFIG.SYS), simply rename the program to I1541.SYS.

ren I1541.COM I1541.SYS

If the problem persists, edit the code file with a binary editor and replace the
four first bytes (at offset 0) of the SYS code with four 0FFH bytes. With this
modification the code cannot run in COM mode, but only in SYS mode.

replace E9 23 05 00     (* decimal 233 035 005 000 *)
with    FF FF FF FF     (* decimal 255 255 255 255 *)

If you appreciate this software (and all the work behind it), please send
$10(US) to:

SWISS BANK CORPORATION, bank account number F4-702,550.0

mail:   Ghielmetti Leopoldo
        Via Castelrotto 20
        6600 Locarno (Switzerland)
e-mail: Leopoldo.Ghielmetti@epfl.ch