From: agc@weasel.demon.co.uk (Alan Charlton) Subject: Re: Archive Tape Controller Config Date: Fri, 29 Jan 1993 23:31:17 +0000
In article <DAVE.93Jan29095434@dross.auspost.com.au> dave@auspost.com.au (Dave Cole) writes:
I have just gotten around to trying to get a tape drive going with linux.
I have an Archive SC402 controller but no docs.
I recently got one of these: it's actually very simple. The IRQ,
DACK and DRQ settings should be obvious (set IRQ to your favourite
position, and the DACK and DRQ to 1); the jumpers for the I/O
addressing refer to address lines A3-A10, so if you draw a little
diagram like this, you can work it all out.
3 4 5 6 7 8 9 10 (address lines)
==============================================================
8 16 32 64 128 256 512 1024 (decimal equivalent)
==============================================================
08 10 20 30 80 100 200 400 (hex equivalent)
From the above piccy it's quite easy to see that to set I/O address
0x300, you'd need to short jumpers 8 and 9, leaving the rest open.
It just takes a little hex arithmetic, and you can work out any
address setting you'd possibly need.
Share and enjoy!
Alan