The SCSI Driver is a well-defined open software interface for accessing any kind of peripheral, not only SCSI devices. Also SATA drives for optical media like DVDs and BDs use the SCSI command set. For other hardware interfaces, e.g. IDE or USB, SCSI commands can be emulated, like HDDRIVER does it for IDE and SATA hard disk drives. All in all with SCSI Drivers one can send any SCSI command to any hardware interface.
The sources of the software on this page are available on GitHub.
HDDRIVER fully supports the current version 1.01 of the SCSI Driver interface. The documentation is available in ST GUIDE format and includes C and Modula-2 bindings.
HDDRIVER is the only driver for the Atari implementing the target interface: TT or Falcon are detected as SCSI devices by other computers (also non-Ataris) and can execute standardized or customized SCSI commands.
Sample code in C for implementing custom SCSI commands is provided on GitHub. In order for the target interface to work faultlessly any software directly accessing SCSI peripherals has to use the SCSI Driver interface.
Fully functional SCSI Drivers are available for the following hardware interfaces and software emulators:
Claus Brod, Steffen Engel
|Atari ATAPI/SATA||HDDRIVER||Uwe Seimet|
|Milan IDE/ATAPI/SATA||HDDRIVER||Uwe Seimet|
|Milan SCSI||Milan PCI SCSI Driver||Michael Schwingen|
|MagiCMac||CBHD/MM_SCSI.PRG||Steffen Engel, Thomas Tempelmann|
|Hatari 2.x (Linux SCSI/IDE/ATAPI/SATA/USB)||NF_SCSI, see below||Uwe Seimet|
|ARAnyM 1.1 (Linux SCSI/IDE/ATAPI/SATA/USB)||NF_SCSI, see below||Uwe Seimet, Thorsten Otto|
There are also other, apparently incomplete implementations with unknown status, which are therefore not listed. The SCSI Driver of the FireBee unfortunately has known bugs.
When implementing a new SCSI Driver it is recommended to not only study the SCSI Driver specification but also the command standards documents, in particular for SPC, SBC and MMC. Information on the SCSI Driver interface is also provided by some of my papers for the German ST Computer magazine.
This SCSI Driver provides direct access to devices like hard disks, SSDs, memory cards, optical drives or streamers. Supported interfaces are SCSI, IDE/SATA and USB. NVMe SSDs require an NVMe-to-USB adapter.
The driver can be launched as a regular program or as an HDDRIVER module. With Hatari the NatFeats support has to be explicitly enabled in the Hatari configuration file or on the command line. The HDDRIVER forum also provides information on this SCSI Driver.
SCSI_MON logs SCSI Driver calls, which helps to analyze errors or when implementing a new SCSI Driver. SCSI_MON also helps to understand the SCSI and SATA software protocols. The program can be launched as a regular program or as an HDDRIVER module.
This archive contains tools for testing SCSI firmware/emulations and certain SCSI Driver functions, also for SCSI Drivers that support IDE/SATA drives or USB devices.