Date: Wed, 16 Jun 1999 17:35:28 -0400 (EDT) From: "Crist J. Clark" <cjc@cc942873-a.ewndsr1.nj.home.com> To: freebsd-hardware@freebsd.org Subject: Sony Proprietary CDROM Message-ID: <199906162135.RAA28174@cc942873-a.ewndsr1.nj.home.com>
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I originally sent this to 'questions,' but I believe I have exhausted potential leads there, so I am trying this audience. I am bringing back into service two 486DXs that have been pushed out of desktop use by newer machines. Both of these have Sony CDROMs with the proprietary interface. On one, I clobbered the old M$ OS without checking how devices were configured. I learned my lesson and checked on the second beforehand. I have been unable to 'find' the CDROM on the first machine. The GENERIC default is to 0x230, but that does not work. The second machine has the CDROM at 0x340 (the value I looked up before I messed with it), and it seems to work fine. I've tried a variety of settings and moved jumpers around, but no luck with such a Monte Carlo approach. The card for the CDROM has four sets of jumpers on it (JP1-JP4). I was told by a very helpful person on -questions that JP4 specified the port address. He said the unjumpered value was 0x300, and one can then set the address 0x300 to 0x3f0. However, the kernel default for these devices is 0x230, outside of that range. In addition, the machine working at 0x340 is unjumpered[0]. Does anyone have experience with these things? Anyone have a pointer to some documentation about these drives (the Sony website has DOS/Windoze drivers, no docs about jumpers I could find)? BTW, the card attached to the problem machine is labeled COR334. Thanks for help or pointers in the right direction. [0] The four jumpers on each card were configured exactly alike. Noting set except for position 2 on JP1 (which my helper told me was the DMA jumper). -- Crist J. Clark cjclark@home.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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