Re: Help with SCSI-2

[lkhaider@concentric.net (Laer Haider)]

lesherjt@vuse.vanderbilt.edu (Tilghman Lesher) wrote:

>Laer Haider (lkhaider@concentric.net) wrote:
>: I received a free Seagate ST-3610N 535MB SCSI-2 HDD (technical details
>: follow).  I was hoping to use it on my IIgs as a replacement HD
>: (faster and bigger), but ran into some trouble.  After formatting and
>: partitioning it (6 ProDOS and 1 HFS partition) using the utilities
>: built into the RamFAST v3.01f SCSI card, I rebooted.  Everything
>: mounted fine; Finder displayed the extra partitions (wasn't using all
>: of them, but I tried that later).  I initialized each partition,
>: including one HFS partition.  All is good.  Then I tried to copy from
>: my old HD to the new one.  After about 5 minutes of copying, the
>: system locked.

(stuff deleted)

>: Am I missing something here?  Are SCSI-2 devices not compatible with
>: the RamFAST?  Not compatible with SCSI-1 devices?  The Apple IIgs?  Is
>: there some hardware hack I can do?  Some driver I can use?
>
>It sounds mysteriously like you've got termination problems.  How is
>the termination set on your RamFast DIP switch?

I can't find my RamFAST manual, since my recent move, and don't really
know how the termination is set.  Could you please tell me how to
check this?

>What are the terminators you are using?  Passive or Active?  Internal or
>external?

I'm using an external passive terminator block.  Do you think I need
an active terminator?

>: My system is set up as follows:
>: 	ROM 1 Apple IIgs.
>: 	2- 3.5" Apple drive
>: 	2- 5.25" floppy drives (1 Apple and 1 Mitac)
>: 	RamFAST v3.01f  (got this in June `96, repaired Feb. `97)
>: 	105MB Toshiba SCSI HDD
>:     --> 535MB Seagate SCSI-2 HDD
>: 	150MB Bernoulli Box cartridge drive
>: 	Toshiba SCSI CD-ROM drive
>: 	4MB RAM in an OctoRAM memory board
>: 	TransWarp GS accelerator
>: 	PCTransporter
>: 	Stereo Sound Card
>: 	GS/OS system 6.0.1 and using ProSel
	Buggie 165 watt power supply

>Another possibility is that you're experiencing a lack of power to your
>SCSI card.  A "Buggie" power supply would fix this.

I've got one of these. :)