Date: Mon, 17 Mar 2003 10:33:36 +0200 From: Willie Viljoen <will@unfoldings.net> To: freebsd-ata@freebsd.org Cc: freebsd-hardware@freebsd.org Subject: Asus P3V133 with 900MHz Celeron CPU, 100MHz FSB. ATA problems Message-ID: <200303171033.36565.will@unfoldings.net>
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This is a shot in the dark, but I'll try my luck... I got a second hand Intel Celeron CPU, listed to run at 900MHz. These are ofcourse multiplier locked, which is a good thing in this case, because my board (Asus P3V133) will only do 8x multiplication. When set at 100MHz FSB, 33MHz PCI clock and FSB == 3*PCI, with 8x mult, the system boots and detects the CPU as 900MHz. All works well, until the first heavy disk access. FreeBD crashes and complains of various soft update problems at the next boot. The ATA controller the disk is on is off board, based on the CMD 649 chipset. It runs comfortably at ATA100 with my Seagate ST340810A. When I run the system at the CPU's full listed speed, I get all sorts of trouble with the ATA controller. Running it at 66MHz FSB, with the locked mult. giving me 600MHz, all if perfect, but I'd love to get more than 600MHz out of it if I can. What also bothers me is that when I boot it as a 600MHz, it identifies itself as "600E MHz", to denote the SSE instructions supported. At 900MHz, it is simply "900 MHz". All I can think is that the controller is not getting properly synced with the rest of the bus, because it will fail to open certain files in 100MHz FSB, but the files are back when I go down to 66MHz. Would a non-standard bus speed that atleast gets me in the region of 900MHz work with this controller? Does anybody know which speed I should use? The CPU is listed to run at 100MHz FSB. Please CC me, I am not subscribed to -ata. Thanks Will -- Willie Viljoen Freelance IT Consultant 214 Paul Kruger Avenue, Universitas Bloemfontein 9321 South Africa +27 51 522 15 60 +27 51 522 44 36 (after hours) +27 82 404 03 27 (mobile) will@unfoldings.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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