mills@ccu.umanitoba.ca (Gary Mills) (01/10/89)
In the recently-posted rs232 addition to minix-st, a completely separate driver and kernel task is used for rs232. I had hoped it could be combined with the tty driver. Aren't we trying to keep Minix small? Is there likely to be an "official" rs232 driver for minix-st, perhaps somewhat related to the PC version. Finally, the "cu" binary was uuencoded, but also archived with a TOS program called ARC. I would prefer if submitters would use Minix archiving tools only, because I run minix-st, but don't have TOS. (I recently ported minix-st to another 68000 machine. I had to modify all the drivers, and rebuild the kernel, but minix-st binaries run just fine. I was very impressed with the kernel code, and the port was easier than I expected.) -Gary Mills- -University of Manitoba- -Winnipeg, Canada-
ast@cs.vu.nl (Andy Tanenbaum) (01/10/89)
In article <6422@louie.udel.EDU> mills@ccu.umanitoba.ca (Gary Mills) writes: >In the recently-posted rs232 addition to minix-st, a completely separate >driver and kernel task is used for rs232. I had hoped it could be combined >with the tty driver. Aren't we trying to keep Minix small? Is there likely >to be an "official" rs232 driver for minix-st, perhaps somewhat related to >the PC version. I still believe in small-is-beautiful, but I am increasingly alone. But I don't give up easily. There will certainly not be an official RS-232 driver for the Atari from me. If Johan decides to do one, that will be reasonably official, but I don't think he has time now. In practice this means there won't be an official one for the next half year or more. Andy Tanenbaum (ast@cs.vu.nl)
johan@nlgvax.UUCP (Johan Stevenson) (01/11/89)
In article <6422@louie.udel.EDU> mills@ccu.umanitoba.ca (Gary Mills) writes: >In the recently-posted rs232 addition to minix-st, a completely separate >driver and kernel task is used for rs232. I had hoped it could be combined >with the tty driver. Aren't we trying to keep Minix small? Is there likely >to be an "official" rs232 driver for minix-st, perhaps somewhat related to >the PC version. Almost a year ago a student worked at Philips on the RS232 driver for MINIX-ST based on tty.c. Since this was for a prelease of MINIX-ST it needs minor work for the current version, but it certainly doable. It also needs work for incorporating some stty/gtty changes from MINIX-PC 1.3 that must be incorporated into MINIX-ST 1.1. The rs232 driver really worked. Even Phil Karn's TCP/IP package was ported at that time using SLIP over rs232, and we succeeded hooking it up to either a VAX or Sun. One issue in favor of a separate driver might be speed. We have not done any measurements at that time, but I think it worked for 2400 baud, 4800 baud often, but not for 9600. It is worth the effort to reconsider, but I have no time now, and I think some others are already working on it (yes?). In case it might help I could send someone a snapshot. -- Johan W. Stevenson johan@pcg.philips.nl Philips Research