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- From: Stephen Usher <Stephen.Usher@earth.ox.ac.uk>
- Subject: Just a couple of things.
- Date: Wed, 27 Apr 1994 08:32:43 +0100 (BST)
- Mime-Version: 1.0
-
- Firstly, I downloaded and installed MiNT-net 0.3 last night. I am impressed!
-
- I'm now working on integrating rc.net into the standard rc files for the
- next release of MiNTOS, whenever that may be! :-)
-
- Also, now I have addroottimeout() in my kernel I'll have a go at modifying
- my uptime/load average code to use this.
-
- Secondly, I've been thinking about the practicality of writing a ACSI/SCSI
- loadable device driver. Could someone tell me if device drivers can be
- called from within other device drivers in a layered manner?
-
- The way I thought of implementing the ACSI/SCSI device was as follows:-
-
- +-------------++-------------++--------------++---------------+
- | Disk Driver || Tape Driver || CDROM driver || SCSI Ethernet |
- +-------------++-------------++--------------++---------------+
- +-------------------------------------------------------------+
- | Standard SCSI device API layer |
- +-------------------------------------------------------------+
- +-----------------++--------------------++--------------------+
- | ACSI Driver || TT SCSI Driver || Falcon Driver |
- +-----------------++--------------------++--------------------+
-
- Filesystems would layer above this model. As the Falcon SCSI and TT SCSI are
- mutually exclusive they could use the same virtual device numbers. Devices
- would be numbered in the same way as Atari does, ie. ACSI are 0-7 and SCSI
- are 8-15.
-
- To do this I'll need to get information on the following:-
-
- (a) SCSI commands
- (b) TT SCSI chip programming
- (c) Falcon SCSI hardware addresses and programming
-
- I have all the Atari developers docs except the chip specs volume for the ST
- and TT but not the Falcon as I got the docs before this was released.
-
- Can anyone point me in the right direction?
-
- Steve
-
- --
- ---------------------------------------------------------------------------
- Computer Systems Administrator, Dept. of Earth Sciences, Oxford University.
- E-Mail: steve@uk.ac.ox.earth (JANET) steve@earth.ox.ac.uk (Internet).
- Tel:- Oxford (0865) 282110 (UK) or +44 865 282110 (International).
-