More tape drive stuff..

From: Karl Maftoum <karlm_at_blitzen.canberra.edu.au>
Date: Sun Aug 2 10:37:10 1998

> Most modern drives are 90 ips. The Sidewinder comes in both versions.
> There are a couple of quick ways of telling which one you have :
> 1) Look at the board on the bottom of the drive itself. There's a 3 pin
> header with a jumper link. It's marked 30 and 90. The meaning is obvious

The drive is jumpered 90 ips.

> 2) At the back of the lower board in the controller there's a link marked
> '90' with a 14 pin chip that may be missing alongside it. 90 ips
> controllers have the link, but the chip is not fitted. 30 ips controllers
> have the link, and the chip isn't fitted (The chip is a 74LS74, wired as
> a /3 counter. It divides a master clock by 3 to get the 30ips write
> clock. On 90 ips drives, the chip is not fitted, and the link connects
> the write clock line to the master clock).

Ok, the link is fitted, and the chip immediatly to the left of the link is
fitted, but is a 74LS01, the Chip just below that is NOT fitted.

> If you've got a 90 ips controller, plug in the Wangtek drive and see what
> happens. If not, then you'll have to start fixing the sidewinder properly.

"Drive not responding" -- Would the fact that I am using an external
supply have any affect here?

> BTW, is the drive roller (on top of the motor spindle) in good condition?
> If it's decayed (and they often do), and you've cleaned off the 'gunge',
> then it'll now be too small, and the tape speed with be wrong. Worth
> checking.

The roller is pretty much decayed, Would any QIC-02 drive plugged in here
work?

Cheers
karl

------------------------------------------------------------------------------

Karl Maftoum
Computer Engineering student at the University of Canberra, Australia

Email: k.maftoum_at_student.canberra.edu.au
Received on Sun Aug 02 1998 - 10:37:10 BST