- * Emulex UNIBUS disk driver with overlapped seeks and ECC recovery.
- *
- * NB: This driver works reliably only on an SC-11B controller with
- * rev. level at least J (in particular rev. level H will not work well).
- * If you have an newer controller you should change olducode below to:
- * int olducode = 0;
- * which saves time by stalling less in the system.
- *
- * Controller switch settings:
- * SW1-1 5/19 surfaces (off, 19 surfaces on Ampex 9300)
- * SW1-2 chksum enable (off, checksum disabled)
- * SW1-3 volume select (off, 815 cylinders)
- * SW1-4 sector select (on, 32 sectors)
- * SW1-5 unused (off)
- * SW1-6 port select (on, single port)
- * SW1-7 npr delay (off, disable)
- * SW1-8 ecc test mode (off, disable)
- * and top mounted switches:
- * SW2-1 extend opcodes (off=open, disable)
- * SW2-2 extend diag (off=open, disable)
- * SW2-3 4 wd dma burst (on=closed, enable)
- * SW2-4 unused (off=open)