Using the Scanport SQ4800 with Linux

I have a computer with both Windows and Linux installed on it, with a SCSI card hooked up to a SQ4800 scanner. The SQ4800 is sold by Scanport, but they claim to have licensed the driver software from Microtek, and I never got much help from either company. Happily, though, Wine has progressed to the point that it can run the Windows drivers for the scanner, and I can now use the scanner from both Windows and Linux. Here's what I did.

On the Windows side:

I installed the drivers and software that came with the Scanport SQ4800
Downloaded and unpacked the freeware scanner utility QV from Cyril Cambien (http://persoweb.francenet.fr/~cambien/).
Verified that the test program c:\windows\twain_32\scanport\scan32.exe could see my scanner.
Verified that I could scan images using QV (File->New->TIFF->scan new image...)

On the Linux side:

I installed Red Hat 6.0 Linux

Verified that Linux can see my scanner by doing

$ cat /proc/scsi/scsi

It should show something like

Attached devices: 
Host: scsi0 Channel: 00 Id: 06 Lun: 00
  Vendor: N-TEK    Model: NuScan II        Rev: 1.60
  Type:   Scanner                          ANSI SCSI revision: 03

Made a symbolic link so I could access the scanner (my first SCSI device, /dev/sga) as /dev/scanner:
```
# ln -s /dev/sga /dev/scanner
```
Changed permissions on the scanner device so everyone can access it:
```
# chmod 666 /dev/sga
```
downloaded and installed the latest RPM version of Wine (12 December 1999) from http://www.winehq.com/download.html
If you have Linux kernel 2.2.6 or later (e.g. Red Hat 6.1 or later), your kernel is fine. (But if you have Linux kernel 2.2.5 or earlier, you may need to follow the instructions in /usr/doc/wine991212/documentation/aspi to patch /usr/src/linux/drivers/scsi/sr.h and rebuild the kernel.)
Copied /etc/wine/wine.conf to ~/.winerc and followed the instructions in /usr/doc/wine991212/documentation/aspi to add a section in .winerc to tell Wine where to find my scanner:
```
  [scsi c0t6d0]
    Device=/dev/scanner   
```

Because wine991212 has a bug in the ASPI code, applied the following patch to the WINE source and rebuilt it:

--- wine-cvs/dlls/wnaspi32/winaspi32.c  Sun Oct 24 23:14:40 1999
+++ wine/dlls/wnaspi32/winaspi32.c      Sun Dec 19 12:48:50 1999
@@ -372,6 +372,7 @@
     X(Status);X(HaId);X(Flags);X(Target);X(Lun);
 #undef X
     tmpsrb.cmd.SRB_BufLen      = sizeof(inqbuf);
+    tmpsrb.cmd.SRB_Flags       = 8;/*target->host data. FIXME: anything more?*/
     tmpsrb.cmd.SRB_BufPointer  = inqbuf;
     tmpsrb.cmd.CDBByte[0]      = 0x12; /* INQUIRY  */
     tmpsrb.cmd.CDBByte[4]      = sizeof(inqbuf);
@@ -380,8 +381,8 @@
 #define X(x) lpSRB->devtype.SRB_##x = tmpsrb.cmd.SRB_##x
     X(Status);
 #undef X
-    lpSRB->devtype.SRB_DeviceType = inqbuf[0]>>3;
-    FIXME("returning devicetype %d for target %d\n",inqbuf[0]>>3,tmpsrb.cmd.SRB_Target);
+    lpSRB->devtype.SRB_DeviceType = inqbuf[0]&0x1f;
+    FIXME("returning devicetype %d for target %d\n",inqbuf[0]&0x1f,tmpsrb.cmd.SRB_Target);
     break;
   }
   case SC_EXEC_SCSI_CMD:

(Hopefully you won't have to do that; the January release of Wine should already include that patch.)

Verified that the test program c:\windows\twain_32\scanport\scan32.exe could see my scanner when running under Wine, e.g.
```
cd /dos/c/windows/twain_32/scanport
wine scan32.exe
```
Verified that I could scan images using QV (File->New->TIFF->scan new image...), e.g.
```
cd /dos/c/qv25
wine qv25.exe
```

I haven't had any success with SANE yet, but I'm looking forward to it.

Copyright 1999 Dan Kegel
dank@kegel.com
Last updated: 19 Dec 1999
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