Zenith H-100 - Interrupt Jumpers; Slide Switch

5-122
INTERRUPT JUMPERS
The Vectored Interrupt jumper locations. VI. are located
on the lower left-hand corner of the controller board.
The data request line. ORQ. from the 1797 is connected to
holes J3 through J10 shown in the illustration below. The
center row of holes numerically correspond with the S-100
interrupt lines VIO through VI7. The interrupt request
line. IRQ. from the 1797 is connected to holes 0 through
7. When jumpered, these locations route IRQ and/or ORQ
from the 1797 controller to the S-100 interrupt lines.
No jumpers are installed in these locations when the H-207
is used in a HlZ-100. These jumper locations are only used
when the H-207 is installed in computers that require
interrupt protocol. The configuration of the jumpers is
determined by the customer's computer documentation.
VI
VECTOR INTERRUPT JUMPER LOCATIONS
(No jumpers are installed for
H/Z-100 operation.)
0 0 0 0 0
0
0 0
0
0
0 0 0
0
0
0
0 0
0 0 0
0
0
0
.... VI0-VIl
o 1 2 3 4 5 6 7-IRQ
SLIDE SWITCH <DSl)
OSl, an 8-section slide switch, determines the port address
and the condition of bits 3 and 4 of the status port. The
sections of OS 1 are defined as follows:
PORT -, NOT PRECOMP. TPI
I ADOllESSING I USED
llH (l)
OFF (0)
I l 6 5 ~ 3 2 I 0.\
~~~B8~~~
Configured for an H/Z-IOO Computer
with 48 TPI. 5-1/4" Drives
'.n
AT 0
I
\
DSI
"------_-I