*
* SCSI #1
* ========
* 5 SCSI 7980S 27B 4
* 14 DAT tape 27B 3
* 12–13 650A 27B 5
* 10–11 SCSI hard disk 27B 6
* 50 SCSI floppy(single sided) 27B 0
* 51 SCSI floppy(double sided) 27B 0
*
* HP–IB #1
* ========
* High–speed disk interface bus (load resistors installed),
* maximum cable length 12 meters, 1 meter per device–load.
* ========
* Maximum of 4 devices (up to four disks, four 9144/45 cartridge
* tape units, or three of the above and one 7974/79/80).
* ========
* If a 7974/79/80 is on the bus, the maximum cable length is
* 8 meters.
* ========
* If this interface is connected to the 12122A internal disk
* in the 248X computer, no other device can be connected to this
* interface.
*
* 15 HP–IB #1 controller 27B 36B
*
* 18–19 HP–IB disk 27B 0
* 9 9144/5 standalone CS–80 cartridge tape 27B 1
* 16–17 HP–IB disk 27B 2
* 30 HP–IB disk (20MB) 27B 2
* 24 CS–80 compatible cartridge tape cache 27B 2
* 53 3.5” single–sided disk (9153/4) 27B 2
* 54 3.5” double–sided disk (9153/4) 27B 2
* 7 7974A/7978A streaming tape drive 27B 3
* 44–47 9133XV/4XV 5.25” Winchester hard disk 27B 4
* 36–37 9122D double–sided floppy 27B 5
* 32–33 9121 flexible disk 27B 6
* 41–43 9133H/34H 5.25” Winchester fixed disk 27B 7
* 61 9133H 3.5” flexible disk 27B 7
*
* HP–IB #2
* ========
* Low speed magnetic tape bus (load resistors installed),
* a maximum of 2 7970 tape drives are supported.
* ========
* Maximum cable length is 20 meters.
*
* 40 HP–IB #2 controller 26B 36B
* 8 7970 HP–IB tape drive 26B 4
* 28 7970 HP–IB tape drive 26B 6
*
* HP–IB #3
* ========
* High speed magnetic tape bus (load resistors installed),
* a maximum of 2 7974/79/80 tape drives are supported.
* ========
* Maximum cable length of 10 meters.