On Sat, Jan 13, 2018 at 2:20 PM, Steve Nickolas <usots...@buric.co> wrote: > > When you've stripped that much out of DOS, you have *nothing*... > > Heck, someone was talking about porting FreeDOS to a *6502*, which has access > to up to 64K of memory and I'd STILL see porting FreeDOS as pie in the sky. > > 68000, well you got GEMDOS, and in fact I think FreeDOS' kernel had 68K > roots, so it's not impossible (besides, you got more address space on a 68K). > > -uso. >
Correct, the FreeDOS kernel has origins on the Motorola 68k. From Pat Villani, original author of the FreeDOS kernel: https://web.archive.org/web/20111012172910/http://opensourcedepot.com:80/DOS/DOS-C.html In brief: [..] NSS-DOS, was completed and demonstrated in 1991. As a result of these demonstrations, NSS was approached to supply source license for this operating system by a major defense contractor. The only new requirement - it had to run on 68K processors. This presented a new challenge. Due to the MS-DOS model used for the API, NSS-DOS relied heavily on a segmented architecture. To meet this challenge, a major redesign of NSS-DOS was undertaken. New proprietary techniques were developed that allowed the same source to be compiled on a variety of hosts and with a wide range of compilers. This new version, DOS/NT, was the result of this new project. The kernel was redesigned as a micro kernel along with logical separation of the file system, memory and task managers. A new DOS API was designed along with a new DOS SDK to guarantee portability. Additionally, all processor unique code was separated from the core functions. The result is the highly portable operating system that DOS/NT represents. [..] You can also find that text in the free ebook, "23 Years of FreeDOS" http://www.freedos.org/ebook/ The FreeDOS kernel didn't *originate* on the M68k, but it was ported there under the name "DOS/NT." Later, Pat ported DOS/NT back to Intel as the DOS-C kernel, which became the FreeDOS kernel. Jim ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
