Re: [ME TOO] Re: Linux-2.1.125 ... pre-2.2 imminent - SCSI issues

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 11 Oct 1998 21:28:54 +0100 (BST)


> It is called 53C710 and Linux haven't had support for it until some
> 2.1.x kernel. Anyway this controller is also very limited by the
> ISA crap.

At least under "that other operating system" the 53c700/66 in my panther
board is slower than AHA1542B

I can't test that in Linux until it acquires a 53c700/66 driver.

> I do not see any problem with using ISA SCSI controllers. I just pointed
> that it is probably hard to find a guy enjoying so much using such
> controllers that he really want to maintain the corresponding drivers.

Nod. The good side is that the AHA1542 itself is a very simple device
to interface with - its a smart controller with a 186 or similar on it.

> I always had seen 1542 advertisments claiming that the device supports BUS
> mastering and 10 MB/s fast SCSI-2 data transfer. Such a wording is utter
> swindling even if it is not false. I paid the 1542 that got the result
> above 1500FF and only 360FF a couple of months later for the 810.

The 1542 supports ISA bus mastering and the CF/CP support 10MByte/second fast
scsi-2 trasnfers. So you get whatever will fit down the ISA bus, which is
of course "not enough".

Alan

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