Hello all, I recently acquired a Microlog PC-107 8" disk controller, with manual and software disk. This is an 8-bit ISA card intended to go in a PC 5150, and allow the user to access 8" drives with DOS. Back in the 5150 days, having 1.2MB of storage was a big deal when 5.25" floppies were 160KB. There is also some note in the manual about reading SSSD CP/M disks and copying files. The only bad news is that it is intended to work only with DOS 1.1, and it actually patches DOS to set its hooks in the system. I'd like to try it with a more modern DOS, but it will require some work :-(. The good news is that the disk that came with it was readable :-), and contains a file called BIOS.A86, which has the following comment at the top: ;**************************************************************** ;* * ;* BIOS FOR IBM-PC DOS 1.1 * ;* * ;**************************************************************** TITLE 'BIOS FOR IBM-PC DOS 1.1 WITH MICROLOG 8" DRIVERS' This appears to be the source for part of the standard DOS 1.1, with Microlog's patches. Theoretically, then, I can deduce how the card works, and maybe make it work with a newer DOS. I was wondering: 1) is anyone is using the same controller successfully with DOS 1.1? 2) has anyone already ported this to a newer DOS version? 3) is anyone else interested in the port if I do it? Thanks! Rich B.