Messages in this thread | | | Date | Sun, 11 Oct 1998 22:18:13 +0200 (MET DST) | From | Gerard Roudier <> | Subject | Re: [ME TOO] Re: Linux-2.1.125 ... pre-2.2 imminent - SCSI issues |
| |
On Sun, 11 Oct 1998, Alan Cox wrote:
> > 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 wouldn't expect the 53c700/710 to be faster than a 1542.
> > 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 have seen some using a Z80.
> > 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".
I know and it is what I meant by "not false". It would be also "not false" to announce an Ultra2 Wide controller supporting EISA BUS mastering and 80 MB/second FAST-40 data transfer for a chip that would support such a brain-damage, with the marketing intention that people would think that they would get a 80 MB/second bandwitch using such an hypothetical controller.
I am not going to cry my eyes out because the fast 1542 has low bandwitch due to ISA bus limits. ;-)
Gerard.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |