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diff --git a/share/man/man4/man4.i386/sea.4 b/share/man/man4/man4.i386/sea.4 new file mode 100644 index 0000000..dac11ce --- /dev/null +++ b/share/man/man4/man4.i386/sea.4 @@ -0,0 +1,90 @@ +.\"Manual pages for FreeBSD Seagate ST01/02, Future Domain TMC-885, +.\"TMC-950 SCSI driver. +.\" +.\"Copyright 1994, Serge Vakulenko (vak@cronyx.ru) +.\" +.\"Redistribution and use of this document, with or without +.\"modification, are permitted provided redistributions must retain +.\"the above copyright notice and this condition. +.Dd December 25, 1994 +.Dt SEA 4 i386 +.Os FreeBSD +.Sh NAME +.Nm sea +.Nd +Seagate ST01/ST02, Future Domain TMC-885, TMC-950 SCSI adapter driver +.Sh SYNOPSIS +With explicit memory and IRQ parameters: +.Cd "controller sea0 at isa? bio irq 5 iomem 0xc8000 vector seaintr +.sp +With automatic memory address detection and no IRQ: +.Cd "controller sea0 at isa? +.sp +.Cd "controller scbus0 +.sp +For each connected disk: +.Cd "device sd0 +.sp +For each connected tape device: +.Cd "device st0 +.sp +For one or more cdroms: +.Cd "device cd0 +.Sh DESCRIPTION +This driver provides access to SCSI devices connected to Seagate ST01/ST02 or +Future Domain TMC-885, TMC-950 SCSI adapter. +.sp +It's possible to use the Seagate ST01/ST02 adapter without IRQ line. +The data rate then slightly decreases (by 20-30%). +.sp +The \fBflags\fP keyword in the configuration file can be used to set +some adapter driver parameters: +.sp +Bits Description +.br +------------------------------------------ +.br +0x01 Disable SCSI bus parity check. +.br +0x02 Place all REQUEST-SENSE SCSI operations ahead of queue. +.sp +The original Seagate ST02 +BIOS cannot coexist with IDE or any other disk controller +because it does not share BIOS disk drive numbers (80h, 81h) +with others. The probing code of the driver allows using ST02 controller +without BIOS: just unplug the ST02 BIOS chip from the board. +.sp +Another problem is the floppy adapter on ST02 which could not be +disabled by jumpers. The ST02 adapter it the best as a cheap solution +for atttaching the tape and CD-ROM drives, and an extra floppy controller +is just a headache. There exist a simple workaround: cutting off +the AEN signal (A11 contact on ISA connector). AEN then goes high and +disables the floppy adapter port address decoder. +.sp +Some motherboards also have a problem with ST02 conflicting with IDE during +IDE data write phase. It seems than ST02 makes some noise +on /IOW line. The /IOW line is used only for floppy controller +part of ST02, and because it's rarely needed, cutting off the /IOW +(contact B13) will help. +.sp +Tested on the following hardware: +.br + Adapter: Seagate ST02 +.br + Disk: HP D1686 +.br +Streamers: Archive Viper 150, Wangtek 5525 +.br + CD-ROMs: Toshiba XM-3401, NEC CDR-25 +.sp +Maximum data rate is about 270-280 kbytes/sec (on 386DX/40). +.Sh FILES +.Bl -tag -width Pa -compact +.It Pa /sys/i386/isa/seagate.c +driver source +.El +.Sh SEE ALSO +.Xr cd 4 +.Xr scsi 4 +.Xr sd 4 +.Xr st 4 |