Date: Wed, 10 Jul 1996 14:18:29 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: ejs@bfd.com (Eric J. Schwertfeger) Cc: jkh@time.cdrom.com, jgreco@brasil.moneng.mei.com, davidg@Root.COM, dawes@rf900.physics.usyd.edu.au, SimsS@Infi.Net, hackers@FreeBSD.ORG Subject: Re: Some recent changes to GENERIC Message-ID: <199607102118.OAA27299@phaeton.artisoft.com> In-Reply-To: <Pine.BSI.3.94.960710112935.21371B-100000@harlie> from "Eric J. Schwertfeger" at Jul 10, 96 11:32:31 am
next in thread | previous in thread | raw e-mail | index | archive | help
> > "standard setting" is. sio2/3 have already gone and I can hardly > > accept the argument that 4 port PCs are any kind of norm. I've seen > > literally hundreds of different PC configurations and in all but a few > > very rare cases, it's always the same 2 ser/1 par/1 game combo. > > Agreed with on machines coming off the shelf that way, but most people I > know that add an internal modem add it as com3/irq5, since they don't have > to figure out how to disable a comm port. which isn't 4 port, but it also > isn't two port. Most interrupt capable PC software that supports com3: and com4: do so by allowing only one of com1:/com3: or com2:/com4: to be open and running with interrupts enabled simultaneously. Typically, this means that a "correct" driver would allow com1: and com3: to coexist on the same interrupt, but not allow them to be used simultaneously. This will typically "go to hell" with uugetty/mgetty/etc., which complete the open of the port instead of waiting for a non-interrupt polled event to be detected (like polling the DCD every 100ms). This is all really a moot point: the reason for the com3:/com4: (sio2/3) removal is that our console code (incorrectly) does not implement the MACH32/MACH64 detection code, freely downloadable, usable, and distributable from the ATI WWW site. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199607102118.OAA27299>