[cups.general] How to send jobs to a SCSI printer with cups?

[Mike Fedyk]

Mike Fedyk wrote:

> Is this right?
>
> In scsi-linux.c at line 185:
>
>      scsi_cmd[0] = 0x0a;       /* Group 0 print command */
>      scsi_cmd[1] = 0x00;
>      scsi_cmd[2] = bytes / 65536;
>      scsi_cmd[3] = bytes / 256;
>      scsi_cmd[4] = bytes;
>      scsi_cmd[5] = 0x00;
>
> According to [1], the format should be
>
> Operation code (0Ah)
> LUN
> MSB
> Transfer Length
> LSB
> Control
>
> I don't know if the linux scsi stack changes the orders of the fields 
> though...
>
> [1]
> http://www.danbbs.dk/~dino/SCSI/SCSI2-11.html
>
Here's a patch:
--- scsi-linux.c.orig   2004-09-10 16:14:08.000000000 -0700
+++ scsi-linux.c        2004-09-10 16:17:20.000000000 -0700
@@ -185,8 +185,8 @@
       scsi_cmd[0] = 0x0a;      /* Group 0 print command */
       scsi_cmd[1] = 0x00;
       scsi_cmd[2] = bytes / 65536;
-      scsi_cmd[3] = bytes / 256;
-      scsi_cmd[4] = bytes;
+      scsi_cmd[3] = bytes;
+      scsi_cmd[4] = bytes / 256;
       scsi_cmd[5] = 0x00;

       for (try = 0; try < 10; try ++)

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