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Pastimes : Dream Machine ( Build your own PC )
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To: Dave Hanson who wrote (1358)6/14/1998 1:03:00 AM
From: Zeuspaul  Read Replies (1) of 14778
 
>>Zeuspaul's early proposal con't<<

Thanks for the Taiwan Asus site. I went to the US site for some strange reason.

AHA 2940, AHA 3940 cards and the 7980 onboard SCSI controllers.

First a correction. I mistakenly indicated the AHA 3940 is a 3 channel adapter. The AHA 3940 is a 2 channel adapter. The difference between the AHA 3940 and the AHA 2940 is all 3 connectors can be used on the AHA 3940 and only two of three connectors can be used on the AHA 2940.(that used to be the case, now Adaptec makes a dual channel AHA 2940 card...AHA 2940 UWD)

This becomes an issue when one considers external and internal SCSI devices and how to spit them. For example the AHA 2940 single channel has three connectors..50 pin internal, 68 pin internal and an external connector. One can use any two but not three.

With the AHA 3940 and the new AHA 2940 UWD all connectors are available for SCSI devices. The external devices will share a channel with one set of internal devices.

I am not too sure how the onboard SCSI works. I downloaded and read the older LX Asus manual with onboard SCSI. There is a 50 pin internal and a 68 pin internal but no external. I believe one has to come off the 50 pin internal and use an in/out connector to connect the external peripherals? One would mix fast and slow devices on the same channel as it is a single channel controller. Somehow the optional AIC 3860 Adaptec chip divides the fast and slow SCSI devices.


The add on cards already have the external connectors. Also I can get dual channel which may be an advantage with lots of SCSI devices. SCSI connectors can get expensive. I have to add the cost of adding an external connector and the optional AIC 3860 chip to the onboard card. I have not seen Asus mobos with alternate SCSI options.

Ease of use and intallation/configuration is a primary concern. There is an issue with on board SCSI and installing an OS from CD-ROM that I do not understand. Something about the CDROM not being seen in some situations. I do not know if it is an issue with add on cards or not.

Thanks

Zeuspaul

ps

>>>"Thats good news?? I can upgrade my Compaq now with the MII card. Let me know if you find out more details."

Not sure I understand this, but you should be able to upgrade easily enough. The 4 mb MII can be had for about $108 OEM, $112 retail.<<<

What I meant to say is If I want two monitors/video cards one must be PCI. If the Matrox G200 is only available in AGP then my only alternative for the PCI card is the existing Millenium II PCI card.
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