Intel 386 - Manual (Page 81)

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
5-8
Table 5-1. Master’s IR3 Connections
Function INTCFG.6 MCR1.3 P3CFG.1
IR3 connected to SIOINT1
P3.1 selected at pin (P3.1)
0 X 0
IR3 connected to SIOINT1
OUT1 connected to pin (TMROUT1)
0 X 1
IR3 internally driven low
P3.1 selected at pin (P3.1)
1 0 0
IR3 connected to pin (INT8) 1 0 1
IR3 connected to SIOINT1
P3.1 selected at pin (P3.1)
1 1 0
IR3 connected to SIOINT1
pin (INT8) must not be left floating
1 1 1
NOTE: X is a don’t care
Table 5-2. Master’s IR4 Connections
Function INTCFG.5 MCR0.3 P3CFG.0
IR4 connected to SIOINT0
P3.0 selected at pin (P3.0)
0 X 0
IR4 connected to SIOINT0
OUT0 connected to pin (TMROUT0)
0 X 1
IR4 internally driven low
P3.0 selected at pin (P3.0)
1 0 0
IR4 connected to pin (INT9) 1 0 1
IR4 connected to SIOINT0
P3.0 selected at pin (P3.0)
1 1 0
IR4 connected to SIOINT0
pin (INT9) must not be left floating
1 1 1
NOTE: X is a don’t care