IBM Series 1 User Manual page 204

c
c
o
Figure 6-8. Jumper Selections
Device address jumpers-
These jumpers represent the high order address
range assigned to the adapter devices. When the
adapter is configured for 4 devices, the device
address from the IDCB is compared with address
jumpers
8-13.
When the adapter is configured
for
8 devices, the device address from the IDCB
is compared with address jumpers
8-12.
When
the adapter is configured for 16 devices, the
device address from the IDeB is compared with
address jumpers
8-11.
Parity option jumper- With this jumper installed, parity is checked
and generated on the data bus in and out lines.
Device configuration jumpers- These 2 jumpers are used to specify
the device configuration attacht:d to
the adapter card.
Jumper 1
On
Off
Off
Jumper 2
Off
On
Off
Configuration
4 devices
8 devices
16 devices
Diagnostic interrupt mask- When installed, this jumper masks off
any interrupts from devices during
external diagnostic mode.
11
12
13 12 11 10 9 8
Customer DPe
adapter card
13
'-___ User's connectors
Customer DPe Adapter
6-23