On 01/01/2016 01:35 PM, Fred Cisin wrote:
Another way, starting with PC/MS-DOS 3.10 was using MSCDEX, or equivalent. I think that there used to be some very strange patches around to let a hard drive impersonate a CD-ROM. A CD-ROM (2/3 G) was not a local drive to the OS! It was presented as being a "drive-like" object on a network. That is a VERY LOCAL area network.
Yup, DOS networking "hooks". The interesting thing is that DOS doesn't deal with allocation or nasty things like that--all of the file access is essentially in the network interface. I did a couple of those drivers for some really strange (sector != multiple of 256) alien filesystems.
--Chuck
