HP 110 Portable (+), Disk Format, HP110.SYS

[Michael Fehlhammer]

Thank you Pascal!

Omniflop can read and write disks as a whole, but it cannot decode the file system, add or remove a file etc., so you can use it to copy and to format disks, but not for file transfer from PC to HP Portable Plus.
But fortunately meanwhile I received what I was looking for, the device drivers HP110.SYS and HPPPLUS.SYS. There were created by Sydex (http://www.sydex.com)
back in the eighties.