SCSI2SD, The SCSI Hard Drive Emulator for retro computing. Traditional hard drives last 5 years*. Maybe, if you're luckly, you'll get 10 years of service from a particular drive. The lubricants wear out, the spindles rust. SCSI2SD is a modern replacement for failed drives. It allows the use of vintage computer hardware long after their mechanical drives fail. The use of SD memory cards solves the problem of transferring data between the vintage computer and a modern PC (who still has access to a working floppy drive ?) *All statistics are made up. Features In-built active terminator. Emulates up to 4 SCSI devices 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). Technical Specifications SCSI Interface SCSI-2 Narrow 8-bit 50-pin connector. Supports asynchronous transfers only. Micro SD Card Interface Standard microSDSC (1GB maximum size) microSDHC, microSDXC Communication is via the SPI protocol at 25MHz. USB Interface (firmware updates and config) USB 2.0 micro-B Power 5V via standard molex drive connector USB or self-powered using the SCSI host termination power. (v5 only) Dimensions 10cm x 5cm x 1.5cm (v5) 10cm x 10cm x 1.5cm (v3, v4) Performance As currently implemented: Transfer size: 512 2048 8192 65536 ------------------------------------------------------- read: 2MB/s 2.1MB/s 2.5MB/s 2.6MB/s write: 125kB/s 441kB/s 1.5MB/s 2.3MB/s ------------------------------------------------------- Tested with a 16GB class 10 SD card, via the commands: # WRITE TEST sudo dd bs=${SIZE} count=100 if=/dev/zero of=/dev/sdX oflag=dsync # READ TEST sudo dd bs=${SIZE} count=100 if=/dev/sdX of=/dev/null Compatibility Computer systems Mac LC-III and LC-475 Mac II running System 6.0.8 Mac SE/30 Apple IIgs using Apple II High Speed SCSI controller card (from v3.3) Symbolics Lisp Machine XL1200, using 1280 byte sectors (from v3.4) PDP-11/73 running RSX11M+ V4.6 Microvax 3100 Model 80 running VMS 7.3 (needs patch against v3.5.2 firmware) Amiga 500+ with GVP A530 Commodore Amiga 500 KS 1.3 with Oktagon 508 SCSI-2 controller Amiga 2000 (B2000 rev 6.4 ECS) with DKB RapidFire SCSI 1 card Amiga 4000 equipped with CyberStorm PPC using 68pin adapter. Atari TT030 System V Atari TT running TOS 3.06 with HDDRIVER software version 9.06 Atari Mega ST 1; TOS 1.04; Protar ProFile 30 external hard drive enclosure (1GB size limitation) Atari MEGA STE needs J3 TERMPWR jumper 1GB limit (--blocks=2048000). The OS will fail to read the boot sector if the disk is >= 1GB. Atari Falcon, TOS 4.02, HDDRIVER 9.06 driver Sharp X68000 SASI models supported. See gamesx.com for information on building a custom cable. needs J3 TERMPWR jumper Set to SCSI ID 3. ID0 will not work. Compaq XP-1000 Professional Workstation Alpha 21264 CPU, 667MHz, with a QLogic SCSI controller in a PCI slot SCSI-based Macintosh Powerbooks (2.5" SCSI2SD) Also reported to work on Thinkpad 860 running Win NT 4.0 PowerPC. AT&T 3B2/600 Sun 2/120 Workstation (Unit Attention disabled) Sun 4/50 workstation Data General MV/2500DC running AOS/VS Vendor: MICROoP Product: 1578-15 UP Revision: DG02 Device-type modifier: 0x4c Applix 1616 IMS MM/1 NeXTcube + NeXTSTEP 3.3 NeXTStation Modified geometry settings are required to avoid "cylinder group too large" errors while formatting. (To simulate Quantum Fireball 1050S) 512 bytesPerSector 139 sectorsPerTrack 4 tracksPerCylinder 4135 cylinder per volume 1 spare sector per cylinder 2051459 usable sectors on volume Apollo 400/425s running DOMAIN/OS Motorola System V/68 R3V7 and R3V8. Since the installation have information about limited number of drives(most of them with custom commands) it requires a pre-installed disk image to be dd-ed on it. Works with MVME167 and MVME177 Motorola System V/88 R40V4.0 through R40V4.4 It requires to describe the disk into a configuration file. The process is described here - http://m88k.com/howto-001.html Samplers Roland JS-30 Sampler Akai S1000, S3200, S3000XL, MPC 2000XL, DPS 12 SCSI cable reversed on S3200 There are compatibility problems with the Akai MPC3000. It works (slowly) with the alternate Vailixi OS with multi-sector transfers disabled. EMU Emulator E4X with EOS 3.00b and E6400 (classic) with Eos 4.01 EMU E6400 w/ EOS2.80f EMU Emax2 Ensoniq ASR-X, ASR-10 (from v3.4, 2GB size limit) ASR-10 Requires TERMPWR jumper (applies to pre. 5.0 SCSI2SD boards only) ASR-X resets when writing to devices > 2Gb. Ensoniq EPS16+ Kurzweil K2000R See kurzweil.com for size limits which a dependant on the OS version. Older OS versions have a 1GB limit. SCSI cable reversed Casio FZ-20M Requires TERMPWR jumper. The manual shows the pin25 of the DB25 connector is "not connected". May require scsi2sd-config --apple flag Yamaha A5000, A3000, EX5, EX5R EMU ESI4000 Synclavier 9600. Disable Parity. Max size == 9GB. Other HP 16601A, 16700A logic analyzers Fluke 9100 series Reftek RT-72A Seismic datalogger. http://www.iris.iris.edu/passcal/Reftek/72A-R-005-00.1.pdf http://www.iris.iris.edu/passcal/Manual/rtfm.s3a.13.html Konami Simpson's Bowling arcade machine http://forums.arcade-museum.com/showthread.php?p=3027446