Fix bug in using nor flash storage without SD
[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 ?)
75de1226 9
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.
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31Micro SD Card Interface
32 Standard microSDSC (1GB maximum size)
33 microSDHC, microSDXC
090977f2 34 Communication is via the SPI protocol at 25MHz.
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35USB Interface (firmware updates and config)
36 USB 2.0 micro-B
090977f2 37Power
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38 5V via standard molex drive connector
39 USB or self-powered using the SCSI host termination power. (v5 only)
090977f2 40Dimensions
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41 10cm x 5cm x 1.5cm (v5)
42 10cm x 10cm x 1.5cm (v3, v4)
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43
44
45Performance
46
47As currently implemented:
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49Transfer size: 512 2048 8192 65536
50-------------------------------------------------------
51read: 2MB/s 2.1MB/s 2.5MB/s 2.6MB/s
52write: 125kB/s 441kB/s 1.5MB/s 2.3MB/s
53-------------------------------------------------------
54
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55
56Tested with a 16GB class 10 SD card, via the commands:
57
58 # WRITE TEST
092541dd 59 sudo dd bs=${SIZE} count=100 if=/dev/zero of=/dev/sdX oflag=dsync
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60
61 # READ TEST
092541dd 62 sudo dd bs=${SIZE} count=100 if=/dev/sdX of=/dev/null
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090977f2 64Compatibility
638c94ce 65 Computer systems
6c8cbf54 66
5e0f1e33 67 Mac LC-III and LC-475
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68 Mac II running System 6.0.8
69 Mac SE/30
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70 Apple IIgs using Apple II High Speed SCSI controller card (from v3.3)
71 Symbolics Lisp Machine XL1200, using 1280 byte sectors (from v3.4)
72 PDP-11/73 running RSX11M+ V4.6
638c94ce 73 Microvax 3100 Model 80 running VMS 7.3 (needs patch against v3.5.2 firmware)
5e0f1e33 74 Amiga 500+ with GVP A530
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75 Commodore Amiga 500 KS 1.3 with Oktagon 508 SCSI-2 controller
76 Amiga 2000 (B2000 rev 6.4 ECS) with DKB RapidFire SCSI 1 card
77 Amiga 4000 equipped with CyberStorm PPC using 68pin adapter.
638c94ce 78 Atari TT030 System V
55beeb5b 79 Atari TT running TOS 3.06 with HDDRIVER software version 9.06
ceb8d243 80 Atari Mega ST 1; TOS 1.04; Protar ProFile 30 external hard drive enclosure (1GB size limitation)
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81 Atari MEGA STE
82 needs J3 TERMPWR jumper
9f5624dd 83 1GB limit (--blocks=2048000). The OS will fail to read the boot sector if the disk is >= 1GB.
55beeb5b 84 Atari Falcon, TOS 4.02, HDDRIVER 9.06 driver
0c532406 85 Sharp X68000
638c94ce 86 SASI models supported. See gamesx.com for information on building a custom cable.
0c532406 87 needs J3 TERMPWR jumper
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88 Set to SCSI ID 3. ID0 will not work.
89 Compaq XP-1000 Professional Workstation
90 Alpha 21264 CPU, 667MHz, with a QLogic SCSI controller in a PCI slot
91 SCSI-based Macintosh Powerbooks (2.5" SCSI2SD)
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92 Also reported to work on Thinkpad 860 running Win NT 4.0 PowerPC.
93 AT&T 3B2/600
94 Sun 2/120 Workstation (Unit Attention disabled)
ceb8d243 95 Sun 4/50 workstation
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96 Data General MV/2500DC running AOS/VS
97 Vendor: MICROoP
98 Product: 1578-15 UP
99 Revision: DG02
100 Device-type modifier: 0x4c
101 Applix 1616
102 IMS MM/1
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103 NeXTcube + NeXTSTEP 3.3
104 NeXTStation
105 Modified geometry settings are required to avoid "cylinder group too large" errors while formatting.
106 (To simulate Quantum Fireball 1050S)
107 512 bytesPerSector
108 139 sectorsPerTrack
109 4 tracksPerCylinder
110 4135 cylinder per volume
111 1 spare sector per cylinder
112 2051459 usable sectors on volume
ceb8d243 113 Apollo 400/425s running DOMAIN/OS
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114 Motorola System V/68 R3V7 and R3V8.
115 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
116 Motorola System V/88 R40V4.0 through R40V4.4
117 It requires to describe the disk into a configuration file. The process is described here - http://m88k.com/howto-001.html
94cc9e77 118
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119
120Samplers
121
6c8cbf54 122 Roland JS-30 Sampler
537ddcc9 123 Akai S1000, S3200, S3000XL, MPC 2000XL, DPS 12
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124 SCSI cable reversed on S3200
125 There are compatibility problems with the Akai MPC3000. It works (slowly) with the alternate Vailixi OS with multi-sector transfers disabled.
537ddcc9 126 EMU Emulator E4X with EOS 3.00b and E6400 (classic) with Eos 4.01
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127 EMU E6400 w/ EOS2.80f
128 EMU Emax2
767f12e4 129 Ensoniq ASR-X, ASR-10 (from v3.4, 2GB size limit)
9f5624dd 130 ASR-10 Requires TERMPWR jumper (applies to pre. 5.0 SCSI2SD boards only)
638c94ce 131 ASR-X resets when writing to devices > 2Gb.
ceb8d243 132 Ensoniq EPS16+
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133 Kurzweil K2000R
134 See kurzweil.com for size limits which a dependant on the OS version. Older OS versions have a 1GB limit.
135 SCSI cable reversed
136 Casio FZ-20M
137 Requires TERMPWR jumper. The manual shows the pin25 of the DB25 connector is "not connected".
138 May require scsi2sd-config --apple flag
638c94ce 139 Yamaha A5000, A3000, EX5, EX5R
cb79ac4e 140 EMU ESI4000
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141 Synclavier 9600.
142 Disable Parity. Max size == 9GB.
143
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144
145Other
146
a8cd4216 147 HP 16601A, 16700A logic analyzers
5e0f1e33 148 Fluke 9100 series
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149 Reftek RT-72A Seismic datalogger.
150 http://www.iris.iris.edu/passcal/Reftek/72A-R-005-00.1.pdf
151 http://www.iris.iris.edu/passcal/Manual/rtfm.s3a.13.html
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152 Konami Simpson's Bowling arcade machine
153 http://forums.arcade-museum.com/showthread.php?p=3027446