Yow is a rev 6 NetWinder. The rev 6 was to be an easier, cheaper, to manufacture version of the rev 5. Both the audio and analog video chips where removed. This left room on the main board for the tulip chip so the daughtercard was removed. It has simplified front and rear panels and a bigger quieter fan.
An initial run of twelve rev 6s where produced. The first one failed completely. The +5 was connected to ground. This was corrected by carefully using a dremel to cut the connections. Of the other eleven, one never worked. So there are ten rev 6s in existence. With the demise of Rebel.com, I do not know where the other nine are.
The crusoe version of the 'Winder made the rev 6 obsolete before it even had a second spin of the board, let alone hit production.
Yow has been my gateway machine since August 2000.
The original 'Winders used the Digital StrongARM. By the time the rev 6 was created, Digital was gone and all the Digital StrongARMs where used up. The new StrongARMs are made by Intel.
The StrongARM used in the 'Winder is a 233 Mhz processor which was overclocked to 275 Mhz. This worked well with the Digital versions, not so well with the Intel versions. For yow, I chose the rev 6 that worked best at 275 Mhz and added a heat sink for luck. There is no fan on the heat sink.
Under 2.2.19, YOW had 64M of ram. Here is the output of the free command which seems to be typical of YOW under load.
total used free shared buffers cached Mem: 63428 31024 32404 6080 3780 18676 -/+ buffers/cache: 8568 54860 Swap: 262576 2504 260072
Here is 2.4.19 with the same 64M of ram. Notice that 2.4 is much more aggressive at caching.
total used free shared buffers cached Mem: 63352 62284 1068 0 4864 40324 -/+ buffers/cache: 17096 46256 Swap: 262576 4228 258348
I then upgraded YOW to 128M. Here is the new free output. The added memory goes to a bigger cache and more buffers.
total used free shared buffers cached Mem: 128180 120684 7496 0 6484 88128 -/+ buffers/cache: 26072 102108 Swap: 262576 5300 257276
Yow has a Fujitsu MHD2021AT with 2G of disk space. When I was at Rebel, I did a test of the 2G, 4G and 6G drives and the Fujitsu came out on top.
Below is the disk usage.
Filesystem Size Used Avail Use% Mounted on /dev/hda1 496M 88M 382M 19% / /dev/hda3 496M 62M 408M 13% /var /dev/hda4 774M 49M 686M 7% /home
As you can see, I am barely using the 2Gs. So I am not looking for a new disk anytime soon.
YOW is running a stripped down DM version 3.1 [Build 15] base install from Rebel.com (RIP). Instead of the 2.2.13 kernel that comes with the base install, I have upgraded to the Linux 2.4.19 kernel.
The upgrade to the 2.4 kernel was painful, so I will outline the steps here to hopefully save others the pain.
Upgrading to 2.4
First: you must have a newer version of
since the driver module layout has changed. I recommend
modutils-2.3.20-1. This version works with both 2.2
and 2.4 kernels.
Also, do a quick
rpm -q initscripts and make sure
it is at least 4.70. It took me days to work out that the
initscript package on YOW was too old.
Iptables replaces ipchains in the 2.4 kernel. If you where using ipchains, you will need to upgrade. This is not going to be a complete introduction to iptables, just some hints.
You need the user mode iptables code. I have uploaded
iptables-1.2.7a to Netwinder.org.
A good set of default rules can be found on the netfilter site. Follow the tutorials link. Note: If you are running PPPoE, replace the eth0 external interface with ppp0.
I have a DSL modem connected to YOW that requires PPPoE. PPPoE is built in to the 2.4 kernel, but there is a dearth of information. Here is an incomplete list to getting PPPoE running under 2.4. Note: I assume you are already using PPPoE under 2.2 and have it running.
/etc/pam.d/system-authfile. The pam-0.72-20 version from netwinder.org will do.
plugin /usr/lib/pppd/plugins/rp-pppoe.soSome of the options in your options file are probably no longer supported. Chief amoung them, the
lockoption. I just kept deleting the offending option rerunning pppd until it stopped complaining! You might want to keep the old copy as backup.