Hi, I have noticed unnatural phenomena being in my system. If someone has same experience, please advice me.
1) Problem is With Linux, Software clock becomes inaccurate according to ISA load. Extra timer-interrupt[0] is counted when NIC works hard. This problem is according to SC520's step, I think. Cause no problem with B08A step, and occur with B0 step. 2) Test environment and target H/W: FTP-Server ! ! LAN ! ISA-NE2000 (IRQ:10) #### Elan SC520 #SBC ISA-NE2000 (IRQ:12) #### ! ! LAN ! FTP-Client SBC is Original board computer: Elan SC520 133MHz, 32MB SDRAM has SuperI/O chip(Winbond W83977TF) so does not use onchip SIO. Boot from CompactFlash(True IDE) NE2000:Realtek8019AS x 2 3) Software on the CF: Linux Kernel 2.2.16 or 2.4.19 I changed PIT freq to correct value. Works simply as masquerade box. 4) Other info. There is no problem with Win98SE+ICS on same hardware. I think WindowsOS does not use PIT for calendar. I already requested Errata to AMD, but not recieved yet. I did not test with another ISA device. I am sorry to my cheap English. Thank you for your help. -- Mori -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>.
