The SCSI Hard Drive Emulator for retro computing.
A single firmware download is always followed by a single firmware activation. A firmware image already resident in a slot can be reactivated by using just the activate function command with the corresponding slot number. The IOCTLSCSIMINIPORTFIRMWARE control code for SRB I/O control is available starting with Windows 8.1. ASUS LSI Embedded MegaRAID WHQL Driver.2011 for Windows XP 32/64, Win: Asus LSI Logic: Asus LSI Logic Embedded MegaRAID V.2007: Asus LSI Logic Embedded MegaRAID V.2007: ASUS LSI Logic Fusion-MPT MiniPort Driver Version 1.20.05: Asus LSI Logic Fusion-MPT MiniPort ScsiPort v1.25.10.00: Asus LSI Logic Fusion-MPT. Adaptec AHA-151X/AHA-152X or AIC-6260/AIC-6360 SCSI Host Adapter (non-pnp).
Download
- downloads for v3/v4/v5/v5.1/v5.2/v5.5 hardware revisions.
- downloads for v6 hardware revisions. This firmware will NOT work on the older boards.
News
[27 Oct 2020]v6.3.2 Bugfix release
- Increase limit of READ/WRITE BUFFER command for improved compatibility on SGI Irix hosts
- Add new config option to enable blind writes to improve SD card write performance. This was option was previously enabled default but causes problems with some SCSI hosts. This option must be disabled on 68K Macs if there are errors when writing data.
[22 Apr 2020]v6.3.1 New hardware support
- New V6 boards have started to ship which require a different firmware file. These boards are silkscreened with 'SCSI2SD V6 / 2020c'. These boards MUST use v6.3.1 or newer firmware.
- Older boards ('Rev F', 'Rev C', or '6.02') should use the 'revF' v6.3.1 firmware
[20 Feb 2020]v6.3.0 Driver update
- Firmware updates on Windows now require the UsbDk driver instead of the WinUSB driver. The version of dfu-util that is distributed with scsi2sd-util6 has been modified to work with UsbDk. This should provide a better experience and will resolve issues around driver signing. There is no need to uninstall the previous driver.
- Bugfix to firmware that prevented some machines from booting
[1 Feb 2020]v6.2.15 Bugfix update
- Resolved a data corruption issue that affects hosts that transfer more than 512k per write command.
[1 Jan 2020]v6.2.14 Bugfix update
- Resolved a data corruption issue that affects hosts that transfer more than 64k per write command.
- Fix invalid CDROM TOC responses (thanks Simon Gander)
[19 Dec 2019]v4.8.4 Bugfix update
- Fix to prevent sending floppy geometry mode page when not configured as a floppy (Thanks Landon Rodgers)
[12 Dec 2019]scsi2sd-util BETA
- Testing release of a completely new configuration utility. Please provide any feedback via email
- Firmware updates not yet implemented in this version
- The stable version of scsi2sd-util, provided alongside the firmware downloads, will remain available for the foreseeable future
[8 Dec 2019]v6.2.9 Bugfix update
- Fix to prevent sending floppy geometry mode page when not configured as a floppy (Thanks Landon Rodgers)
[30 Oct 2019]v6.2.8 Bugfix update
- Fix regression that caused the firmware to fail all self-test checks.
[9 Oct 2019]v6.2.7 Performance Update
- Improvements to data throughput, which may assist SCSI hosts with short timeouts.
[10 June 2019]v4.8.3 Bug fix update
- Improve XEBEC support
- Add Flexible Disk Drive Geometry SCSI MODE page
- Fix regression for Kurzweil K2000
- Add scsi mode page 0 support
- Fix SD card hotswap bug when the SCSI host is constantly polling
[29 May 2019]v6.2.5 Bug fix update
- Port XEBEC support from v5 firmware
- Add Flexible Disk Drive Geometry SCSI MODE page
- Stability improvements
- Fix regression from 6.1.3 firmware for Kurzweil K2000
- Add scsi mode page 0 support
- Fix SD card hotswap bug when the SCSI host is constantly polling
Overview
SCSI2SD is an emulator for old SCSI hard drives. It allows replacing one or several old broken SCSI drives with a SD memory card.
Unlicenced Copies
Older versions of the SCSI2SD hardware designs were published under the GPL licence. This permits anyone to build their own board from the original or modified designs, so long as they abide by the licence terms.
- The source/designs of any modifications must be provided to those you distribute the board to.
- Clones are based on the obsolete V4 design, lack features, and may not be compatible with all the systems listed on these pages.
Artmix is currently selling unlicensed modified clones ('SD SusanoMonster'), and refuses to comply with the GPL. Please do not purchase this board. If you have already purchased, please request the seller provides you with the modified designs under the GPL licence.
Which version should you buy ?
| SCSI2SD V6 | This board offers significantly better performance than the V5.x boards by adding support for synchronous SCSI transfers. Easy access to virtual disk data over USB.
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| SCSI2SD V5.1/V5.2 | This is a newer version of the V5 board, with software-enabled termination, full-size SD card, and floppy-style power connector. This version provides a faster startup time than V5, which is needed to boot some Amiga and Staubli machines |
| SCSI2SD V5.5 | Plugs directly into an external DB25 connector without a cable. Uses micro SD card. |
| SCSI2SD V5 | This is the older version which uses micro SD cards. |
| SCSI2SD for Powerbook | Designed for Apple Powerbook laptops using 2.5' drives. |
Scsi Driver Download Windows 10
Purchase
- codesrc.com (Australia)
- Inertial Computing (USA)
- itead (China)
- AmigaKit (UK)
3rd party accessories
- Thingiverse nibblernibbles has created a 3d-printable external enclosure for the SCSI2SD + DB25 adapter. Power can be supplied over USB for hosts which don't supply termination power.
- SCSI2SD V5 & V6 Bracket by Maya Designs
- SamplerZone.com External cases for V5.0, V5.1, V5.2, and V6 boards, internal cables for all music samplers, and fully-realized SCSI2SD sampler solutions.
Features
- In-built active terminator.
- Emulates up to 4 SCSI devices (7 for the V6 version)
- Supports sector sizes from 64 bytes to 8192 bytes
- Firmware updatable over USB
- Highly configurable over USB
- Selectable SCSI ID
- Selectable parity support
- Enable/disable Unit Attention Condition
- Artificial limits on the SCSI disk size (eg. limit size to 4G to avoid OS bugs)
- Sector size (can also be set via the SCSI MODE SELECT command, as sent by SCSI format utilities).
- External LED connector.
Technical Specifications
| V5 hardware | V5.1 hardware | V5.2 hardware | V5.5 hardware | V6 hardware | |
| Internal 50pin Narrow 8-bit SCSI connector | Yes | Yes | Yes | No | Yes |
| DB25 SCSI Connector | No | Optional DB25 female socket. | No | DB25 male socket. Direct plug-in without cable | No |
| Synchronous SCSI Support | No | No | No | No | Yes FAST10 (10MB/s) synchronous transfers. |
| SCSI Terminator | Active Terminator Resistor packs can be removed from the socket to disable the terminator | Active Terminator Enabled via software using scsi2sd-util | Active Terminator Enabled via software using scsi2sd-util | Active Terminator Always-on | Active Terminator Enabled via software using scsi2sd-util |
| SD Card Interface | microSD, tested up to 64GB Communication is via the SPI protocol at 25MHz (3MB/s theoretical max) | Full-size, tested up to 128GB Communication is via the SPI protocol at 25MHz (3MB/s theoretical max) | Full-size, tested up to 128GB Communication is via the SPI protocol at 25MHz (3MB/s theoretical max) | microSD, tested up to 64GB Communication is via the SPI protocol at 25MHz (3MB/s theoretical max) | Full-size SD, tested up to 128GB Up to 20MB/s |
| USB Interface | Firmware updates and configuration USB 2.0 micro-B | Firmware updates and configuration USB 2.0 micro-B | Firmware updates and configuration USB 2.0 micro-B | Firmware updates and configuration USB 2.0 micro-B | Firmware updates, configuration, and mass-storage USB 2.0 micro-B. Mass-storage at USB 2.0 FS speeds (1.2MB/s max) |
| Power | 5V via standard Molex 4-pin drive connector, USB, or self-powered using the SCSI host termination power. 2.35W maximum (500mA) DO NOT CONNECT 12V at all if you need to make your own power cable as it risks destroying the board if you accidentally swap the wires. | 5V via floppy 4-pin drive connector, USB, or self-powered using the SCSI host termination power. 2.35W maximum (500mA) DO NOT CONNECT 12V at all if you need to make your own power cable as it risks destroying the board if you accidentally swap the wires. | 5V via floppy 4-pin drive connector, USB, or self-powered using the SCSI host termination power. 2.35W maximum (500mA) DO NOT CONNECT 12V at all if you need to make your own power cable as it risks destroying the board if you accidentally swap the wires. | 5V via DB25 SCSI connector, or USB. 2.35W maximum (500mA) Requires SCSI host that supplies terminator power on pin 25 of the DB25 socket | 5V via floppy 4-pin drive connector, USB, or self-powered using the SCSI host termination power. 2.35W maximum (500mA) |
| Dimensions (L x W x H) | 5cm x 10cm x 1.5cm | 10cm x 9cm x 1.5cm | 10cm x 9cm x 1.5cm | 7.5cm x 5.5cm x 1.8cm (External case) | 10cm x 9cm x 1.5cm |
| Performance Tested under optimal conditions.For comparison, here are some benchmarks of some older SCSI hardware. | Up to 2.6MB/s read, 2.3MB/s write (1.1MB/s on most older SCSI hosts) | Up to 2.6MB/s read, 2.3MB/s write (1.1MB/s on most older SCSI hosts) | Up to 2.6MB/s read, 2.3MB/s write (1.1MB/s on most older SCSI hosts) | Up to 1MB/s | Up to 10MB/s. |
Compatibility
Files
Firmware update utility and configuration tool at:
- downloads for v3/v4/v5/v5.1/v5.2/v5.5.
- downloads for v6.
These files are currently available for Windows, Linux, and Mac OSX.
A copy of all sources can be obtained via the command:
or (for V6)
Alternatively, the git sources can be viewed using your web browser by clicking here or here (V6)
Howto
- FormatWithBasiliskII Format an SD card for use with Apple Macintosh hardware using the Basilisk II emulator
Scsi Disk Device