These are the programs and instructions on how to read and write MS-DOS disks with a modified 1541. A 1541-II cannot unfortunately be modified for the program.


1541-dos.exe 1993-07-27 20387
MS-DOS files in a self-extracting archive: read90k.com, 1541bloc.gif, 1541-clk.gif. For those who have no access to LHA or MS-DOS, the same files (pictures converted to a more modern format) are available individually from this directory.
1541-dos.readme 1994-01-18 2283
Overview and CRC32's for the files
1541-dos.sfx 1993-07-27 27812
C64 programs in a self-extracting archive: 1541-reads-dos, 1541-writes-90k
1541-dos.txt 1994-01-18 43512
Instructions for programs & the hardware modification
1541-rdp.prg 1996-03-05 30278
1541-rdp.readme 1996-03-05 2416
An improved, faster version of 1541-reads-dos.
1541bloc.png 2001-08-22 3376
Block diagram of the 1541 data flow when reading from the disk.
1541clk.png 2001-08-22 6398
An excerpt from the 1541 schematic diagram featuring the bit clock circuitry. Includes the modification instructions.
read90k.com 1993-05-09 1467
MS-DOS utility for reading the special 90-kilobyte format.

Mirror sitesGeneral informationFile typesData transfer

The Commodore brandname and the chickenhead logo are property of Commodore International BV, a Tulip company.