From owner-freebsd-questions Fri Mar 8 08:36:50 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id IAA28123 for questions-outgoing; Fri, 8 Mar 1996 08:36:50 -0800 (PST) Received: from ncd.com (firewall-user@welch.ncd.com [192.43.160.250]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id IAA28111 Fri, 8 Mar 1996 08:36:47 -0800 (PST) Received: by ncd.com; id IAA11257; Fri, 8 Mar 1996 08:22:18 -0800 Received: from z-code.z-code.com(192.82.56.21) by welch.ncd.com via smap (g3.0.1) id xma011244; Fri, 8 Mar 96 08:22:06 -0800 Received: from zolaris.z-code.com (zolaris.z-code.com [192.82.56.41]) by z-code.z-code.com (8.6.9/8.6.9) with SMTP id IAA26794; Fri, 8 Mar 1996 08:01:27 -0800 Received: by zolaris.z-code.com (5.x/SMI-SVR4) id AA09182; Fri, 8 Mar 1996 07:59:17 -0800 From: "Ulf Zimmermann" Message-Id: <9603080759.ZM9180@zolaris.z-code.com> Date: Fri, 8 Mar 1996 07:59:16 -0800 In-Reply-To: Terry Dwyer "Re: Embedded SCSI controller on HP netserver LC" (Mar 8, 15:06) References: X-Mailer: Z-Mail (3.2.0 06sep94) To: Terry Dwyer , Ulf Zimmermann , Terry Lambert , "Justin T. Gibbs" Subject: Re: Embedded SCSI controller on HP netserver LC Cc: FreeBSD Questions Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-questions@FreeBSD.ORG X-Loop: owner-questions@FreeBSD.ORG Precedence: bulk On Mar 8, 15:06, Terry Dwyer wrote: > Subject: Re: Embedded SCSI controller on HP netserver LC > [...] > > > > > > I've been offered the chance to upgrade my hardware at work from a tired > > > old 486DX33 16MB ram to a new machine. This could well be a HP Netserver > > > LC (P100). > > To those who replied thank you. > > One of the replies indicated that the aic7770 could only handle 4 > transactions at a time as opposed to 16 for the aic7870. This has enabled > me to up the ante and go for a machine with a better SCSI controller. > > Terry >-- End of excerpt from Terry Dwyer AIC7850 = 3 SCB (SCSI Command Blocks) (PCI, used on many motherboards, sold as Motherboard with 2940 on board) AIC7770 = 4 SCB, external SRAM possible with up to 255 SCB (ISA, VLB, EISA) AIC7880 = 16 SCB, external SRAM possible with up to 255 SCB (PCI, 2940/2940W) AIC7880 = 16 SCB, external SRAM possible with up to 255 SCB (PCI, 3940/3940W(?)) The original software from Adaptec (HIM support) has also ways to store SCB in normal computer ram, but the AIC chip can't load this automatic. Bye, Ulf. -- ===================================| NCD Software Div. Z-Code, SysAdmin FreeBSD 2.1.0 is available now! | Phone: 415-899-7941 Fax: 898-8299 -----------------------------------| Rowland Way 101, Novato, CA-94945 Turning PCs into Workstations | E-Mail: ulf@ncd.com ===================================| Phone @home: 510-865-0204