Small compatibility improvements, and added scsi2sd-monitor test program
[SCSI2SD.git] / readme.txt
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1SCSI2SD, The SCSI Hard Drive Emulator for retro computing.
2
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3Traditional hard drives last 5 years*. Maybe, if you're luckly, you'll get 10
4years of service from a particular drive. The lubricants wear out, the spindles
5rust. SCSI2SD is a modern replacement for failed drives. It allows the use of
6vintage computer hardware long after their mechanical drives fail. The use of
7SD memory cards solves the problem of transferring data between the vintage
8computer and a modern PC (who still has access to a working floppy drive ?)
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090977f2 10*All statistics are made up.
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11
12
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13Features
14
15 In-built active terminator.
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16 Emulates up to 4 SCSI devices
17 Supports sector sizes from 64 bytes to 8192 bytes
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18 Firmware updatable over USB
19 Highly configurable over USB
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20 Selectable SCSI ID
21 Selectable parity support
22 Enable/disable Unit Attention Condition
23 Artificial limits on the SCSI disk size (eg. limit size to 4G to avoid OS bugs)
537ddcc9 24 Sector size (can also be set via the SCSI MODE SELECT command, as sent by SCSI format utilities).
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25
26
27Technical Specifications
28
29SCSI Interface
30 SCSI-2 Narrow 8-bit 50-pin connector. Supports asynchronous transfers only.
31SD Card Interface
32 Standard SDSC (1GB maximum size)
638c94ce 33 SDHC, SDXC
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34 Communication is via the SPI protocol at 25MHz.
35Power
36 5V via standard molex drive connector.
37Dimensions
38 10cm x 10cm x 1.5cm
638c94ce 39 Mounting holes to suit standard 2.5" - 3.5" drive bracket.
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40
41
42Performance
43
44As currently implemented:
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46Transfer size: 512 2048 8192 65536
47-------------------------------------------------------
48read: 2MB/s 2.1MB/s 2.5MB/s 2.6MB/s
49write: 125kB/s 441kB/s 1.5MB/s 2.3MB/s
50-------------------------------------------------------
51
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52
53Tested with a 16GB class 10 SD card, via the commands:
54
55 # WRITE TEST
092541dd 56 sudo dd bs=${SIZE} count=100 if=/dev/zero of=/dev/sdX oflag=dsync
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57
58 # READ TEST
092541dd 59 sudo dd bs=${SIZE} count=100 if=/dev/sdX of=/dev/null
cc6921e4 60
090977f2 61Compatibility
638c94ce 62 Computer systems
6c8cbf54 63
5e0f1e33 64 Mac LC-III and LC-475
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65 Mac II running System 6.0.8
66 Mac SE/30
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67 Apple IIgs using Apple II High Speed SCSI controller card (from v3.3)
68 Symbolics Lisp Machine XL1200, using 1280 byte sectors (from v3.4)
69 PDP-11/73 running RSX11M+ V4.6
638c94ce 70 Microvax 3100 Model 80 running VMS 7.3 (needs patch against v3.5.2 firmware)
5e0f1e33 71 Amiga 500+ with GVP A530
638c94ce 72 Atari TT030 System V
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73 Atari MEGA STE
74 needs J3 TERMPWR jumper
638c94ce 75 1GB limit (--blocks=2048000)
0c532406 76 Sharp X68000
638c94ce 77 SASI models supported. See gamesx.com for information on building a custom cable.
0c532406 78 needs J3 TERMPWR jumper
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79 Set to SCSI ID 3. ID0 will not work.
80 Compaq XP-1000 Professional Workstation
81 Alpha 21264 CPU, 667MHz, with a QLogic SCSI controller in a PCI slot
82 SCSI-based Macintosh Powerbooks (2.5" SCSI2SD)
83 Also reported to work on Thinkpad 860 running Win NT 4.0 PowerPC.
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84 Data General MV/2500DC running AOS/VS
85 Vendor: MICROoP
86 Product: 1578-15 UP
87 Revision: DG02
88 Device-type modifier: 0x4c
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89
90Samplers
91
6c8cbf54 92 Roland JS-30 Sampler
537ddcc9 93 Akai S1000, S3200, S3000XL, MPC 2000XL, DPS 12
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94 SCSI cable reversed on S3200
95 There are compatibility problems with the Akai MPC3000. It works (slowly) with the alternate Vailixi OS with multi-sector transfers disabled.
537ddcc9 96 EMU Emulator E4X with EOS 3.00b and E6400 (classic) with Eos 4.01
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97 EMU E6400 w/ EOS2.80f
98 EMU Emax2
767f12e4 99 Ensoniq ASR-X, ASR-10 (from v3.4, 2GB size limit)
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100 ASR-20 Requires TERMPWR jumper.
101 ASR-X resets when writing to devices > 2Gb.
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102 Kurzweil K2000R
103 See kurzweil.com for size limits which a dependant on the OS version. Older OS versions have a 1GB limit.
104 SCSI cable reversed
105 Casio FZ-20M
106 Requires TERMPWR jumper. The manual shows the pin25 of the DB25 connector is "not connected".
107 May require scsi2sd-config --apple flag
638c94ce 108 Yamaha A5000, A3000, EX5, EX5R
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109
110Other
111
a8cd4216 112 HP 16601A, 16700A logic analyzers
5e0f1e33 113 Fluke 9100 series
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114 Reftek RT-72A Seismic datalogger.
115 http://www.iris.iris.edu/passcal/Reftek/72A-R-005-00.1.pdf
116 http://www.iris.iris.edu/passcal/Manual/rtfm.s3a.13.html
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117 Konami Simpson's Bowling arcade machine
118 http://forums.arcade-museum.com/showthread.php?p=3027446