Path: utzoo!censor!isgtec!bmw From: bmw@isgtec.UUCP (Bruce Walker) Newsgroups: comp.sys.ibm.pc Subject: Re: Another ST01/ST02 question (new SCSI info) Summary: GTFM! :-) Keywords: SCSI Seagate Message-ID: <111@isgtec.UUCP> Date: 13 Jul 89 21:09:05 GMT References: Reply-To: bmw@isgtec.UUCP (Bruce Walker) Organization: I.S.G. Technologies, Toronto, Ontario Lines: 42 Anyone interested in using the ST01/2/E50 SCSI boards from Seagate should call up their local Arrow office (electronics disti's) and ask for the "ST01, ST02 SCSI HOST ADAPTER PRODUCT MANUAL" (No. 36027-002 Rev G). In there you'll learn that the ST02 supports: o 5.25 at 360K and 1.2M o 3.5 at 720K and 1.44M NOTES FOR EXPERIMENTORS These boards are cheap! An ST01 is $35 (Can., w/taxes). By playing with an ST01-A board I have discovered that if you boot your PC while nothing is connected to the SCSI bus, the SCSI BIOS complains that it has failed self-test and hangs! The only solution to this appears to be to remove the BIOS ROM. The ST01 card has no terminating resistors so the SCSI bus floats; this must be bugging the BIOS. The reason why this concerns me is that I am going to be using these things for tape backup purposes -- a lot of the time there will be nothing connected to the SCSI port. There is also a version of the board called the ST01-E50. This has an external connector and terminating resistors. This is about $45 (Can.). I figure that's the way I should go for tapes. BUG in DOCS: On page 2-7 of the manual, section 2.5.9 "Status Register" bit 0 is called "SCSI RST". This is wrong. It is really "SCSI BSY" (See also Appendix E-9). This makes a BIG difference. This is very nice board to program. I have a home-made NCR5380 SCSI board from a few years ago, and I can tell you that the chip on this board is much less complicated to use. -- Bruce Walker ...uunet!mnetor!lsuc!isgtec!mutant!bmw "Better Living Through Connectivity" ...utzoo!lsuc!isgtec!mutant!bmw ISG Technologies Inc. 3030 Orlando Dr. Mississauga. Ont. Can. L4V 1S8