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docs/mail-archive/linux-misc/Volume2/digest705
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docs/mail-archive/linux-misc/Volume2/digest705
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||||
From: Digestifier <Linux-Misc-Request@senator-bedfellow.mit.edu>
|
||||
To: Linux-Misc@senator-bedfellow.mit.edu
|
||||
Reply-To: Linux-Misc@senator-bedfellow.mit.edu
|
||||
Date: Sat, 3 Sep 94 18:13:11 EDT
|
||||
Subject: Linux-Misc Digest #705
|
||||
|
||||
Linux-Misc Digest #705, Volume #2 Sat, 3 Sep 94 18:13:11 EDT
|
||||
|
||||
Contents:
|
||||
Ctrl-Z Makes VC Unresponsive ! (Jim Nakamura)
|
||||
Re: **BRAND NEW**Texel CD-ROM Drives ***DIRT CHEAP***!!! (Goran Devic)
|
||||
Re: Unix programming question (Al Longyear)
|
||||
Re: VUE like system for Motif or Linux? (Bill Broadley)
|
||||
Re: How to use 14400bps with modem? (Jim Graham)
|
||||
Max size of SCSI HD? (Dale Elrod)
|
||||
Experiences with Adaptec 2842 bootdisk (Thomas Reutterer)
|
||||
Re: LJ#4? (Joseph W. Vigneau)
|
||||
Re: Promising Linux boxes in September 'Computer Shopper' (Bill Broadley)
|
||||
Re: WABI vs. SoftWindows? (Kevin Brannen)
|
||||
Re: vi for dos (Hugh Johnson)
|
||||
Re: Greater than 1024 Cyls and Linux support? (Bao Chau Ha)
|
||||
Re: Xconfig for Diamond SS24X ... (Craig Bates)
|
||||
Re: CAP for Linux? (Dave Platt)
|
||||
Re: dram -- bogoboost without patching! (Thomas G. McWilliams)
|
||||
Re: 16550AFN serial card (Rob Janssen)
|
||||
|
||||
----------------------------------------------------------------------------
|
||||
|
||||
From: jzero@netcom.com (Jim Nakamura)
|
||||
Subject: Ctrl-Z Makes VC Unresponsive !
|
||||
Date: Sat, 3 Sep 1994 15:06:53 GMT
|
||||
|
||||
|
||||
I've just realized that when I used Ctrl-Z at ANY time, I get an
|
||||
unresponsive VC as a result. I have to go to another VC, and
|
||||
kill the first VC. This problem is driving me nuts. Has anyone
|
||||
had any similar experiences?
|
||||
|
||||
(Linux v. 1.1.8).
|
||||
|
||||
--
|
||||
No Tijuana insurance!
|
||||
|
||||
jzero@netcom.com
|
||||
S.F., CA
|
||||
|
||||
------------------------------
|
||||
|
||||
From: goran@cs.utexas.edu (Goran Devic)
|
||||
Subject: Re: **BRAND NEW**Texel CD-ROM Drives ***DIRT CHEAP***!!!
|
||||
Date: 1 Sep 1994 19:13:37 -0500
|
||||
|
||||
In article <hpa.287c0000.I.use.Linux@ahab.eecs.nwu.edu>,
|
||||
H. Peter Anvin <hpa@nwu.edu> wrote:
|
||||
>This is a rip-off. Don't buy one. You can get a 2x-speed drive for
|
||||
>only a few more dollars these days.
|
||||
>
|
||||
|
||||
My friend just bought one double speed CD ROM for $129 from one retail
|
||||
outlet in Dallas... Not SCSI though...
|
||||
|
||||
|
||||
--
|
||||
o"o
|
||||
+----oOO--=U=--OOo------+
|
||||
| goran@cs.utexas.edu |
|
||||
+-----------------------+ Smash your forehead on any key to continue...
|
||||
|
||||
------------------------------
|
||||
|
||||
From: longyear@netcom.com (Al Longyear)
|
||||
Subject: Re: Unix programming question
|
||||
Date: Sat, 3 Sep 1994 15:51:04 GMT
|
||||
|
||||
mai@wumpus.cc.uow.edu.au (Van Dao Mai) writes:
|
||||
|
||||
>I have programmed UNIX for a long time and feel frustrated with the way
|
||||
>software is installed on the system. Under UNIX people often have to
|
||||
>hardwire the paths and settings into the executable at compile time.
|
||||
>This is in contrast with DOS that passes the full path name of the execuatble
|
||||
>as argv[0] so that you can search for library + data files.
|
||||
|
||||
>This is why DOS programmers can install all needed files into one
|
||||
>directory making it easier to maintain and backup. In UNIX after a while
|
||||
>you have no idea where to find the files. You also have binary
|
||||
>distribution problem where you have to make so many links and forget about
|
||||
>them.
|
||||
|
||||
Just because your program is running does not mean that the code file
|
||||
is still addressable under the name that you have in argv[0]. The argv
|
||||
vector is simply that -- arguments. There is absolutely no requirement
|
||||
that argv[0] even contain the name of the program. Several programs
|
||||
even use it for an additional argument.
|
||||
|
||||
Let's face facts. UNIX is not MSDOS. You are not alone in the computer. An
|
||||
other program running in the system may change the configuration information
|
||||
which will make the data in argv[0] meaningless.
|
||||
|
||||
[BTW, this facility did not exist in MSDOS until 2.0. The file name is
|
||||
not in the argument string. It is in a different area of memory --
|
||||
tacked on to the end of the environment strings.]
|
||||
|
||||
>The UNIX shell can be modidied to pass the full path name into a program
|
||||
>but this will crash many existing programs or causing some real nuisance.
|
||||
|
||||
No, I doubt that. Passing the full name will not crash any program of
|
||||
which I am aware. The UNIX programs must be written to accept full
|
||||
names as well as just their own name. It is totally legal and valid to
|
||||
use "fred" as well as "./fred". One has a path, one does not. (They
|
||||
may not be the same program however.)
|
||||
|
||||
>I just wonder if there is any one working on proposing a standard for Linux
|
||||
>software layout that solve this problem. What I have done is to make the
|
||||
>binary fully configurable after compilation.
|
||||
> - Provide fee space within the executable at compile time
|
||||
> - Provide a program 'register' that scan the executable and
|
||||
> modify information in it (safely) to produced a customised one
|
||||
> that knows where it is installed.
|
||||
|
||||
It would seem to me that you would be better to place the configuration
|
||||
file in a specific location, such as the /etc directory. Then, in that file,
|
||||
put the file names to the data files.
|
||||
--
|
||||
Al Longyear longyear@netcom.com
|
||||
|
||||
------------------------------
|
||||
|
||||
From: broadley@turing.ucdavis.edu (Bill Broadley)
|
||||
Subject: Re: VUE like system for Motif or Linux?
|
||||
Date: Fri, 2 Sep 1994 02:13:23 GMT
|
||||
|
||||
Vue runs well if you have enough ram.
|
||||
|
||||
But for me olvwm is a MUCH nicer environment. Takes less ram,
|
||||
more functionality for multiple workspaces. I.e. drag windows into
|
||||
different workspaces, push windows offscreen into another desktop etc.
|
||||
|
||||
Olvwm gives you the multiple workspaces without getting in the way
|
||||
or taking up to much memory.
|
||||
|
||||
Of course memory use because you have more workspaces is to be expected.
|
||||
|
||||
|
||||
--
|
||||
Bill Broadley Broadley@math.ucdavis.edu UCD Math Sys-Admin
|
||||
Linux is great. Bike to live, live to bike. PGP-ok
|
||||
|
||||
------------------------------
|
||||
|
||||
Crossposted-To: comp.os.linux.help,comp.os.linux.admin
|
||||
From: jim@n5ial.mythical.com (Jim Graham)
|
||||
Subject: Re: How to use 14400bps with modem?
|
||||
Date: Fri, 2 Sep 1994 23:12:57 GMT
|
||||
|
||||
NOTE: Followups re-directed to comp.dcom.modems.
|
||||
|
||||
In article <778389210snz@vertex.demon.co.uk> Steve@vertex.demon.co.uk
|
||||
writes:
|
||||
|
||||
>Compression comes in 2 flavours; MNP 5 and V42bis.
|
||||
|
||||
Well, actually, there are others, but..... :-)
|
||||
|
||||
>MNP 5 is capable, theoretically, of 2:1 compression [ .... ]
|
||||
>V42bis theoretically manages a max of 4:1 compression
|
||||
|
||||
Actually, both of these so-called theoretical maximum compression ratios
|
||||
are nothing but simple numbers the marketing types can remember. Both
|
||||
MNP5 and V.42bis (which, btw, really is normally the better of the two)
|
||||
are capable of *MUCH* higher than 2:1 or even 4:1.
|
||||
|
||||
I have some detailed specs somewhere, but of course, they're not in the
|
||||
directory they should be in (and my copy of Recommendation V.42bis is at
|
||||
work). Of course, the numbers don't really mean much unless the data is
|
||||
basically designed to be highly compressible, but.... :-)
|
||||
|
||||
Later,
|
||||
--jim
|
||||
|
||||
--
|
||||
73 DE N5IAL (/4) < Running Linux 1.0.9 >
|
||||
jim@n5ial.mythical.com ICBM: 30.23N 86.32W
|
||||
|| j.graham@ieee.org Packet: N5IAL@W4ZBB (Ft. Walton Beach, FL)
|
||||
E-mail me for information about KAMterm (host mode for Kantronics TNCs).
|
||||
|
||||
|
||||
------------------------------
|
||||
|
||||
From: dale@gate.dungeon.com (Dale Elrod)
|
||||
Subject: Max size of SCSI HD?
|
||||
Date: 3 Sep 1994 16:35:55 GMT
|
||||
|
||||
What is the max size that a single partition on a SCSI based hard drive?
|
||||
|
||||
I would like to place two 9 gig drives on my ftp server but want to be sure
|
||||
that Linux can handle this.
|
||||
|
||||
--
|
||||
+-----------------------------+------------------+---------------------+
|
||||
| Dale Elrod | dale@dungeon.com | 3 Hazel Close |
|
||||
| Dungeon Network Systems | +44-638-711550 | Mildenhall, Suffolk |
|
||||
| Internet Access for 10 quid | info@dungeon.com | IP28 7HU |
|
||||
+-----------------------------+------------------+---------------------+
|
||||
|
||||
------------------------------
|
||||
|
||||
From: reutterer@wu-wien.ac.at (Thomas Reutterer)
|
||||
Subject: Experiences with Adaptec 2842 bootdisk
|
||||
Date: 3 Sep 1994 18:03:30 GMT
|
||||
|
||||
I have been looking around for a bootdisk to set up Linux on a System with
|
||||
an Adaptec AHA 2842 SCSI-Adapter.
|
||||
|
||||
Recently I<>ve been told that one (still at the "interim-stage"?) is
|
||||
available at:
|
||||
|
||||
sunsite.unc.edu:/pub/linux/kernel/images/boot284x.tar.gz
|
||||
|
||||
Did anyone succeed to set up Linux with this bootdisk yet?
|
||||
|
||||
Any information is appreciated.
|
||||
|
||||
Thanks in advance
|
||||
thomas
|
||||
|
||||
------------------------------
|
||||
|
||||
From: joev@garden.WPI.EDU (Joseph W. Vigneau)
|
||||
Subject: Re: LJ#4?
|
||||
Date: 3 Sep 1994 17:56:16 GMT
|
||||
|
||||
In article <1994Sep1.104456.7388@durie.wanganui.gen.nz>,
|
||||
Liam Greenwood <liam@durie.wanganui.gen.nz> wrote:
|
||||
>Joseph W. Vigneau (joev@garden.WPI.EDU) wrote:
|
||||
>> Has the Linux Journal #4 been distributed yet? I just received LJ#3
|
||||
>> yesterday...
|
||||
>
|
||||
> I received the Linux Journal #5 today.
|
||||
|
||||
I got my LJ 5 yesterday... Now I'm just waiting for #4...
|
||||
|
||||
--
|
||||
joev@wpi.edu, joev@hotblack.gweep.net WPI Computer Science Linux!
|
||||
<a href="http://www.wpi.edu:8080/~joev"> Click Here! </a>
|
||||
|
||||
------------------------------
|
||||
|
||||
From: broadley@turing.ucdavis.edu (Bill Broadley)
|
||||
Subject: Re: Promising Linux boxes in September 'Computer Shopper'
|
||||
Date: Fri, 2 Sep 1994 02:31:15 GMT
|
||||
|
||||
Heres the most interesting quote I've seen for awhile:
|
||||
|
||||
$2895
|
||||
Comtrade p5-90
|
||||
256k L2 cache (20ns)
|
||||
Flash bios, 4 pci, 4 ISA
|
||||
16 MB ram
|
||||
540 MB scsi.
|
||||
15" monitor 1024x768 NI .28mm
|
||||
1.44" floppy.
|
||||
2 MB vram stealth 64 with the BT485 Ramdac
|
||||
PCI fast scsi-II ncr controller
|
||||
2 serial 1 parallel, 1 game
|
||||
101 keyboard
|
||||
3 button 400 dpi mouse
|
||||
dos 6.2 win 3.11 with manuals
|
||||
mini tower 5 bay 200 watts
|
||||
energy star complaint
|
||||
|
||||
$ 70 16 Bit ethernet
|
||||
$ 100 upgrade to 512 k L2 cache
|
||||
$ 550 upgrade from 15" to 17" MAG MX 17F .26" dot pitch (sony tube???)
|
||||
Others available much cheaper I.e. CTX for $320, mag DX $450 or so)
|
||||
$ 350 upgrade from 540 to 1080 MB connor 10ms 256k cache
|
||||
|
||||
Total $3975
|
||||
p5-90, 512k l2, 16 Mb ram, 1Gb scsi, 17" monitor with sony tube,
|
||||
all fairly linux compatible as far as I can tell.
|
||||
|
||||
I've heard they use cheap keyboards/mice but I'd be happy to replace
|
||||
both to get a machine like this for that price.
|
||||
|
||||
Comments?
|
||||
|
||||
--
|
||||
Bill Broadley Broadley@math.ucdavis.edu UCD Math Sys-Admin
|
||||
Linux is great. Bike to live, live to bike. PGP-ok
|
||||
|
||||
------------------------------
|
||||
|
||||
Crossposted-To: comp.unix.unixware
|
||||
From: kbrannen@csfb1.fir.fbc.com (Kevin Brannen)
|
||||
Subject: Re: WABI vs. SoftWindows?
|
||||
Reply-To: uunet!csfb1!kbrannen
|
||||
Date: Fri, 2 Sep 1994 16:51:51 GMT
|
||||
|
||||
In article <346jqr$r1r@mis.nu.edu>, dmarner@mis.nu.edu (Dan Marner) writes:
|
||||
|> In article <CvD37n.DK0@csfb1.fir.fbc.com>,
|
||||
|> Kevin Brannen <uunet!csfb1!kbrannen> wrote:
|
||||
|> >[With UnixWare] I also get complete and up-to-date man pages (this is
|
||||
|> >a real sore spot with me and gives me many negative feelings towards the FSF
|
||||
|> >despite the good utilities they produce).
|
||||
|> >
|
||||
|> Complete? Well, by some definitions. Novell ships UnixWare without
|
||||
|> man source, which renders commands such as 'apropos' not terribly
|
||||
|> useful. Note that 'apropos' DOES ship with the system, and, when
|
||||
|> asked, Novell says "Yup, it's broken alrighty, nope we aren't gonna
|
||||
|> fix it, why aren't you using the Fingertip Librarian?"
|
||||
|
||||
Au contraire, el capitan... (sp?) There is hope, read on...
|
||||
|
||||
|> Or did you mean complete as in "all commands have man pages?" Try
|
||||
|> "man dfspace." One of many I have encountered without a man page.
|
||||
|
||||
Unfortunately, I'm at work and can't test.
|
||||
|
||||
|> In general, I like UnixWare, I support a dozen or so systems
|
||||
|> running it. It definitely has its good points, but the man pages
|
||||
|> certainly aren't one of them. IMHO, of course.
|
||||
|> --
|
||||
|
||||
Dan,
|
||||
|
||||
I understand your feelings, I had them several months back. However, I
|
||||
didn't want to wait for Novell to fix it and did it myself. I've posted
|
||||
my "How to make `man' work better" series here (c.u.u), but I'm always
|
||||
willing to sent it to whomever needs it (the reason I'm following up
|
||||
instead of replying).
|
||||
|
||||
The series helps you to set up your environment to find all the man
|
||||
system pages, the Motif man pages (assumes you have the SDK), and create
|
||||
a whatis database so the apropos and man -k commands work.
|
||||
|
||||
So, UW does provide it them, they just need a little tweaking. My comment
|
||||
(about Linux man pages) was directed to the comments in the gcc man page
|
||||
(about not bothering to keep them up to date) and the fact that some of my
|
||||
commands *definitely* do not have a man page (or perhaps I retrieved an
|
||||
incomplete Linux, but since 95+% of my commands have man pages, I suspect
|
||||
they just weren't included in the release).
|
||||
|
||||
[ Note: follow-ups changed as this is becoming UW only. ]
|
||||
|
||||
Kevin Brannen
|
||||
--
|
||||
work: uunet!csfb1!kbrannen or csfb1!kbrannen@uunet.uu.net
|
||||
home: kbrannen@metronet.com
|
||||
|
||||
------------------------------
|
||||
|
||||
From: hugh@snafu.seada.com (Hugh Johnson)
|
||||
Subject: Re: vi for dos
|
||||
Date: 2 Sep 94 15:38:03
|
||||
Reply-To: hugh@seada.com
|
||||
|
||||
In article <778525462snz@panache.demon.co.uk> raph@panache.demon.co.uk (Raphael Mankin) writes:
|
||||
|
||||
There are some very good vi clones on garbo and simtel. Have a look in
|
||||
the appropriate directories. I'm sorry I don't have an exact reference
|
||||
to hand.
|
||||
|
||||
Also, try the ftp site of oak.oakland.edu, if memory serves. They
|
||||
have a slew of vi clones for DOS and such.
|
||||
|
||||
--
|
||||
| Opinions? I doan' have no steenkin'
|
||||
hugh@seada.com or | opinions. They doan' let me have
|
||||
76317.2234@compuserve.com | none.
|
||||
|
||||
------------------------------
|
||||
|
||||
From: habaoch@eng.auburn.edu (Bao Chau Ha)
|
||||
Subject: Re: Greater than 1024 Cyls and Linux support?
|
||||
Date: Sat, 3 Sep 1994 17:52:27 GMT
|
||||
|
||||
In article <343eqj$ohq@rigel.infinet.com> zureal@infinet.com (Jeffrey Oxenreider) writes:
|
||||
>
|
||||
>: At the same time I am planning on partitioning my 330 meg ESDI hard drive into
|
||||
>: MSDOS and a LINUX partitions. The drive has 1224 cylinders and I know that
|
||||
>: MSDOS and Smartdrive have problems with anything over 1024 so.....
|
||||
>
|
||||
>: Obvious question? Will LINUX recognize the partition if it's at the end of
|
||||
>: the ESDI drive and also will it have a problem with CYL > 1024?
|
||||
>
|
||||
>Should work. I don't know much about ESDI drives, but I've got a MAXTOR
|
||||
>345 meg SCSI that has over 12k+ cylinders on it, and DOS will only deal
|
||||
>with the 1st 1024 cyl, so I put DOS at the 1st 900 or so, and then my
|
||||
>swap partition and then the linux box at the end. No problems here.
|
||||
>
|
||||
What SCSI host adapter do you have? The Adaptec will remap the drive
|
||||
to a drive with only 345 meg., 1 meg for every cylinder. Just curious,
|
||||
and I still don't believe that LILO can load the kernel image from a
|
||||
partition which spans beyond 1024 cylinders.
|
||||
|
||||
Bao
|
||||
|
||||
------------------------------
|
||||
|
||||
From: cgb102@psu.edu (Craig Bates)
|
||||
Crossposted-To: comp.os.linux.help,comp.os.linux.admin
|
||||
Subject: Re: Xconfig for Diamond SS24X ...
|
||||
Date: Sat, 3 Sep 1994 14:24:19 EST
|
||||
|
||||
In article <345pio$fr6@charnel.ecst.CSUChico.EDU> hwang@ecst.csuchico.edu (Tony Wang) writes:
|
||||
>Path: news.cac.psu.edu!howland.reston.ans.net!europa.eng.gtefsd.com!MathWorks.Com!yeshua.marcam.com!charnel.ecst.csuchico.edu!hwang
|
||||
>From: hwang@ecst.csuchico.edu (Tony Wang)
|
||||
>Newsgroups: comp.os.linux.misc,comp.os.linux.help,comp.os.linux.admin
|
||||
>Subject: Xconfig for Diamond SS24X ...
|
||||
>Date: 1 Sep 1994 23:54:00 GMT
|
||||
>Organization: California State University, Chico
|
||||
>Lines: 22
|
||||
>Message-ID: <345pio$fr6@charnel.ecst.CSUChico.EDU>
|
||||
>NNTP-Posting-Host: guzzler.ecst.csuchico.edu
|
||||
>Xref: news.cac.psu.edu comp.os.linux.misc:25709 comp.os.linux.help:55774 comp.os.linux.admin:14377
|
||||
|
||||
|
||||
|
||||
>Hello there:
|
||||
|
||||
> I remembered someone posts an Xconfig file is specific for the
|
||||
>"Diamond SS24X", and it can display in 1024x768 mode by adjusting the
|
||||
>freq of the vga card.
|
||||
|
||||
> I can not remembered where I got that file because it has been a while.
|
||||
>I tried the sunsite, but it seems not there. I can only find the generic one
|
||||
>for Diamond, and I can not make it to display in 1024x768 mode.
|
||||
|
||||
> Can anyone who has this file send me a copy or tell me where I can find
|
||||
>this file?
|
||||
|
||||
> Any help will be very much appreciated.
|
||||
|
||||
|
||||
|
||||
>have a nice day, :)
|
||||
|
||||
>Tony Wang
|
||||
>e-mail: hwang@ecst.csuchico.edu
|
||||
|
||||
|
||||
I would like a copy also please. I just can't get it to go in 1024x768 mode.
|
||||
|
||||
|
||||
|
||||
|
||||
Craig Bates
|
||||
cgb102@psu.edu
|
||||
Go Nittany Lions!
|
||||
|
||||
------------------------------
|
||||
|
||||
From: dplatt@3do.com (Dave Platt)
|
||||
Subject: Re: CAP for Linux?
|
||||
Date: Fri, 2 Sep 1994 22:15:22 GMT
|
||||
|
||||
>I just downloaded the most recent CAP package and was disappointed
|
||||
>to see that Linux isn't one of the systems supported. Has such a
|
||||
>port been done, and if not is anyone planning to do one?
|
||||
|
||||
It's available under a number of guises. All of them require hacks or
|
||||
extra hardware, or both.
|
||||
|
||||
You can get a patch (at munnari.oz.au, I believe) which adds Linux to
|
||||
the list of supported CAP systems. It configures CAP to allow IPTalk
|
||||
operation on a Linux system - you'd need a FastPath-4, -3, GatorBox, or
|
||||
some similar IPtalk-to-EtherTalk router to handle protocol conversion.
|
||||
|
||||
I was able to install CAP on my Linux system using a hacked-up version
|
||||
of UAR as the network interface. This UAR allows the CAP interfaces to
|
||||
be bound to the "tnnl" DDP-in-IP tunneling interface. I also set up UAR
|
||||
on my Sun SparcStation, acting as a router between the IP tunnel and
|
||||
EtherTalk Phase 2. It's an ugly hack but it does work.
|
||||
|
||||
At least one group of people is working on adding native EtherTalk
|
||||
support to Linux. They've got Phase 1 partially working.
|
||||
|
||||
Phase 2 (which is what most organizations are using these days) will be
|
||||
a more difficult capability to implement. It requires a consistent
|
||||
method of persuading the Ethernet interface to receive multicasts. A
|
||||
fair number of the current Linux ethercard drivers do not yet support
|
||||
multicasting, and [as far as I can tell] there is no consistent kernel
|
||||
interface for registering with the network in order to receive arbitrary
|
||||
packets (e.g. there's no equivalent to the Berkeley packet filter).
|
||||
|
||||
--
|
||||
Dave Platt dplatt@3do.com
|
||||
USNAIL: The 3DO Company, Systems Software group
|
||||
600 Galveston Drive
|
||||
Redwood City, CA 94063
|
||||
|
||||
------------------------------
|
||||
|
||||
From: tgm@netcom.com (Thomas G. McWilliams)
|
||||
Subject: Re: dram -- bogoboost without patching!
|
||||
Date: Sat, 3 Sep 1994 18:48:05 GMT
|
||||
|
||||
Jerry Gaffke (jerryg@teleport.com) wrote:
|
||||
: You're almost certainly running these DRAMs far out of spec, on very
|
||||
: thin ice.
|
||||
|
||||
Well, over 12 years of empirical evidence show that the
|
||||
bogoboost technique is safe and works fine. The 500 uS refresh
|
||||
timer is close to optimal on most machines. The margin of safety
|
||||
is considerable. You have achieved almost all of the boost
|
||||
possible at that point. You need to go to much, much longer
|
||||
delays before you experience parity errors: about 10000 or
|
||||
20000 uS. But there is no point in pushing it to the threshold
|
||||
because you gain almost no performance increase over 500 uS.
|
||||
|
||||
This technique is particularly well suited to older 386 motherboards.
|
||||
Owners of this hardware may well want to take a look at Paul
|
||||
Gortmaker's "dram" program and squeeze a bit more performance out of
|
||||
their older hardware.
|
||||
|
||||
tgm@netcom.com
|
||||
|
||||
|
||||
------------------------------
|
||||
|
||||
Crossposted-To: comp.os.linux.help
|
||||
From: rob@pe1chl.ampr.org (Rob Janssen)
|
||||
Subject: Re: 16550AFN serial card
|
||||
Reply-To: pe1chl@rabo.nl
|
||||
Date: Sat, 3 Sep 1994 17:13:18 GMT
|
||||
|
||||
In <347bmd$nrs@nermal.cs.uoguelph.ca> hpulley@uoguelph.ca (Harry C Pulley) writes:
|
||||
|
||||
>Andre Fachat (fs1@aixterm1.urz.uni-heidelberg.de) wrote:
|
||||
>: Naji M. Khudairi (naji@myhost.subdomain.domain) wrote:
|
||||
>: : : >Does LINUX support any 16550AFN serial card?
|
||||
>: : Great, but how do you enable the 16 byte buffer in order to take advantage
|
||||
>: : of overrun protection?
|
||||
>: Another silly question
|
||||
>: Can I just remove the 8250 from an (very) old Serial Card and replace
|
||||
>: it with a 16550 to improve serial throughput?
|
||||
|
||||
>You must change both the UART (8250) and the 2 support chips, unless the
|
||||
>support chips are newer than the UART. Wherever you buy a 16550 you usually
|
||||
>get the two little support chips too (1489 and 1488). The 3 chips are pin
|
||||
>compatible with your old setup. Just drop them in and all should be well. It
|
||||
>worked for me.
|
||||
|
||||
There is no need to swap the 1488 and 1489, as they have no relation to
|
||||
the FIFO buffering. They are the drivers/receivers for the RS232 levels.
|
||||
|
||||
Rob
|
||||
--
|
||||
=========================================================================
|
||||
| Rob Janssen | AMPRnet: rob@pe1chl.ampr.org |
|
||||
| e-mail: pe1chl@rabo.nl | AX.25 BBS: PE1CHL@PI8UTR.#UTR.NLD.EU |
|
||||
=========================================================================
|
||||
|
||||
------------------------------
|
||||
|
||||
|
||||
** FOR YOUR REFERENCE **
|
||||
|
||||
The service address, to which questions about the list itself and requests
|
||||
to be added to or deleted from it should be directed, is:
|
||||
|
||||
Internet: Linux-Misc-Request@NEWS-DIGESTS.MIT.EDU
|
||||
|
||||
You can send mail to the entire list (and comp.os.linux.misc) via:
|
||||
|
||||
Internet: Linux-Misc@NEWS-DIGESTS.MIT.EDU
|
||||
|
||||
Linux may be obtained via one of these FTP sites:
|
||||
nic.funet.fi pub/OS/Linux
|
||||
tsx-11.mit.edu pub/linux
|
||||
sunsite.unc.edu pub/Linux
|
||||
|
||||
End of Linux-Misc Digest
|
||||
******************************
|
||||
Reference in New Issue
Block a user