Intel iSBX 350 PARALLEL MULTIMODULE BOARD Hardware Reference Manual page 14

iSBX 350 Preparation for Use
Port
X1
X1
Table 2-5. POI"t Configuration Jumpers For lfiuitimoduie™ Board (Continued)
Mode
o
Output
(latched)
1 Input
(strobed)
Driver (0)/
Tsrminator (T)
D:XU5. XU6
Delete
None
Jumper Configuration
Add Effect
None
T: XU3, XU5, XU6 *E9-E10
Connects IBFB output
to J1-22.
D:XU4
*E25-E26 E26-E11
*E11-E12
*E7-E8
E7-E16
or
Connects J1-32 to
STBei input.
Connects INT B output to
MINTR1.
E7-E18 Connects INT B output to
MINTRO.
Port
XO
X2
XO
X2
Restrictions
None
None; Port X2 can be in
Mode 0, input or output, if
Port XO is also in Mode O.
None.
Port X2 bits perform the
following:
• Bit 0 - Port X1 inter-
rupt (PB INTR) to inter-
rupt jumper matrix.
• Bit 1 - Port X1 Input
Buffer Full (IBF) out-
put.
• Bit 2 - Port X1 Strobe
(STB/) input.
• Bits 3, 4, 5, 6, 7 - De-
pends on Port XO mode.
I
XI
1 Output
(latched)
I
T: XU3
I
D: XU4. XU5, XU6
*E9-E10
Connects OBFei output
output J1-22.
XO None.
X2 " . Port X2 bits perform the
I
following:
I
X2
(upper)
X2
(lower)
o
Input
o
Input
I I
*E11-E12
T:XU3
T:XU4
and
*E25-E26
*E7-EB
None
None
"Default jumper connected at the factory'.
E11-E26
E7-E16
or
E7-E18
Connects J1-32 to
ACKei input.
Connects INT B output to
MINTR1.
Connects INT B output to
MINTRO.
*E19-E20 Connects bit 4 to J1-26.
*E21-E22 Connects bit 5 to J1-28.
"E23-E24 Connects bit 6 to J1-30.
*E25-E26 Connects bit 7 to J1-32.
*E7-E8
*E9-E10
*E11-E12
*E13-E14
Connects bit 0 to J1-24.
Connects bit 1 to J1-22.
Connects bit 2 to J1-20.
Connects bit 3 to J1-18.
XO
• Bit 0 - Port X1 inter-
rupt (PB INTR) to inter-
rupt jumper matrix.
I
·
Bit 1 - Port X1 Output
Buffer Full (OBF/) out-
put.
• Bit 2 - Port X1 Ac-
knowledge (ACK/) in-
put.
• Bits 3, 4, 5, 6, 7 - De-
pends on Port XO mode.
Port XO must be in Mode 0
for all four bits to be avail-
able.
X1 Port X1 must be in Mode 0
for all four bits to be avail-
able.
XO
X1
Port XO must be in Mode 0
for all fou r bits to be avail-
able.
Port X1 must be in Mode 0
for all four bits to be avail-
able.
2-7