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- kickstart/scsidisk
-
- A SCSIDirect command should no longer mess up scsi.device
- command handling if it was handled with a BUSY status
- internally. The disk size calculation returned the # of blocks
- - 1. This messed up TD_GETGEOMETRY results. TD_GETGEOMETRY will
- now return decent results, including the head count and
- related values. R/W handling did use two's complement
- arithmetic when doing mapped block handling. Ouch. scsi.device
- is now a New Style Device with 64 bit trackdisk support. RDB
- processing will also be able to access blocks beyond 4GB now
- for whatever it's worth. scsi.device will reject lengths
- now that don't match the blocksize. This finally gets rid of
- the problems occuring when a 0 block count was passed as length
- in a SCSI CDB, i.e. it will return an error now instead of
- locking up everything.
-
- The IDE drive identification was pretty messed up. It did not
- handle ATAPI device recognition and even set up IDE registers
- wrong at certain times.
-
- Added ATAPI support. The polling wait code is still pretty
- ugly and wastes lots of time on slower devices at the moment
- because we don't have a simple way to delay for really short
- times without messing up multitasking. CIA access comes to mind
- but I don't like that. Well, it should work in general and it
- works with my Mitsumi CD-ROM drive at the moment. The 6 Byte
- READ/WRITE/SEEK/MODE commands are silently reworked into the
- extended versions under the assumption that 100% of all ATAPI
- devices will like the extended ones much better. Maybe this
- should be changed to a a retry extended on failure type thing.
-
- Now I can build the A4kT scsi.device with SAS/C 6.56
- _including_ the NCR script. Batteries included.
- Well, actually all devices can be built now. I don't know if
- they all work, though. A3k and A4k[T] devices seem to be ok.
-
- Geometry data will be updated as far as possible on a media
- change now. Issues: What kind of data should be returned when
- no medium is inserted? What about e.g. cyl/sec/head for a
- CD-ROM?
- Froze 43.11
- Fixed a couple of problems in the ATAPI support. Now uses the
- correct transfer length when setting up a command and the
- removable bit should now be correctly evaluated. There was a
- typo. The transfer routines were warped at times, too.
- Internal command evaluation should be safer when it comes to
- the 64 bit set and scsi.device should now skip non disk devices
- when looking for an RDB.
- Fixed a very bad stack bug with the IDE setup which definitely
- killed e.g. the A600 and A1200. Removed the NSD getdrivetype
- hack in anticipation of a corresponding NSD update.
- Froze 43.12.
- The IDE drivers should no longer access undefined memory on
- bootup on an A4k. Also, battmem options should be usable now to
- all hardware models if available. IDE/ATAPI hardware
- recognition has been greatly simplified. We'll see if this
- breaks anybody. It should be less demanding of ATAPI devices
- now while still recognizing "no HW" correctly. The 2nd drive
- battmem bit hack is no longer needed. There may be an
- additional wait of ~1 second for the first try to access a non
- existing ATA[PI] slave with certain master devices like e.g
- a Mitsumi CDROM drive.
- Froze 43.14.
- The ATA[PI] HW recognition should now well handle
- - bad ATA drives that mess up BSY on boot
- - masters that don't handle non existing slaves well
- - ATAPI devices that don't show up as ATAPI well
- - darn slow HW without slowing down faster HW on reset
- Froze 43.15.
- ATAPI handling of MODE SENSE(6) and MODE SELECT(6) was fairly
- warped. This should be much better now. With a little bit of
- luck new ATAPI devices should be recognized and handled now ...
- if READ CAPACITY works as expected. Unfortunately I don't have
- a device to actually test this with. Froze 43.16.
- HD_SCSICMD should now use the correct LUN on SCSIF_AUTOSENSE.
- Bump for beta release. Froze 43.17.
-
-
- To use this device, you need a based V40 system and the included
- LoadV43Module command. You must place suitable lines like:
-
- LoadV43Module >NIL: <module> [REBOOT]
-
- as the very first lines _before_ SetPatch into your
- S:Startup-Sequence. This is one of the very few occasions where the
- Startup-Sequence may be changed. If you have multiple modules
- installed, make sure that only the _last_ call to LoadV43Module
- contains the REBOOT option. If this is the only module, make sure
- that you specify REBOOT. You should make sure that you load the
- right module[s]:
-
- a300.ld_strip A1200 IDE
- a600.ld_strip A600 IDE
- a1000.ld_strip A4000[T] IDE
- a4000t.ld_strip A4000T SCSI
- scsidisk.ld_strip A3000[T]
-
- LoadV43Module will install the module in memory if necessary and
- reboot after theinstallation to activate the module if REBOOT has
- been specified. On an A3k, you may want to specify DEADLY as
- additional option to REBOOT. Basically this means that the first
- boot will use the original ROM OS modules and be rebooted
- automatically to use the new ones after they are installed. Any
- further reboots will use the new modules if SysBase has not been
- trashed in the meantime. Thanks to Olaf Barthel for helping out
- with the code for LoadV43Module.
-
- Incompatibilities with different ATAPI devices may occur. Detailed
- bug and performance reports are welcome.
-
- As there has been some confusion about 64 bit support, please refer
- to the NSD directory on ftp.amiga.de for the current official
- documentation for the standards supported by Amiga International,
- Inc. Please Check the DevInfo section of the Amiga Developer CD
- and/or ftp.amiga.de as appropriate for updated information
- periodically.
-
- Heinz Wrobel
- <heinz@amiga.de>
-