Intel 8XC196NT Computer Hardware User Manual


 
4-1
CHAPTER 4
STANDARD AND PTS INTERRUPTS
4.1 INTERRUPT SOURCES, VECTORS, AND PRIORITIES
The interrupt structure of the 87C196CB is the same as that of the 8XC196NT. The only differ-
ence is that INT13, which was reserved on the 8XC196NT, supports the CAN peripheral.
Table 4-1 lists the 87C196CB’s interrupts sources, default priorities (30 is highest and 0 is low-
est), and vector addresses. Figures 4-1 and 4-2 illustrate the interrupt mask and pending registers.
Table 4-1. Interrupt Sources, Vectors, and Priorities
Interrupt Source Mnemonic
Interrupt Controller
Service
PTS Service
Nonmaskable Interrupt NMI INT15 FF203EH 30
EXTINT Pin EXTINT INT14 FF203CH 14 PTS14 FF205CH 29
CAN CAN INT13 FF203AH 13 PTS13
FF205AH 28
SIO Receive RI INT12 FF2038H 12 PTS12 FF2058H 27
SIO Transmit TI INT11 FF2036H 11 PTS11 FF2056H 26
SSIO Channel 1 Transfer SSIO1 INT10 FF2034H 10 PTS10 FF2054H 25
SSIO Channel 0 Transfer SSIO0 INT09 FF2032H 09 PTS09 FF2052H 24
Slave Port Command Buff Full CBF INT08 FF2030H 08 PTS08 FF2050H 23
Unimplemented Opcode FF2012H
Software TRAP Instruction FF2010H
Slave Port Input Buff Full IBF INT07 FF200EH 07 PTS07 FF204EH 22
Slave Port Output Buff Empty OBE INT06 FF200CH 06 PTS06 FF204CH 21
A/D Conversion Complete AD_DONE INT05 FF200AH 05 PTS05 FF204AH 20
EPA Capture/Compare 0 EPA0 INT04 FF2008H 04 PTS04 FF2048H 19
EPA Capture/Compare 1 EPA1 INT03 FF2006H 03 PTS03 FF2046H 18
EPA Capture/Compare 2 EPA2 INT02 FF2004H 02 PTS02 FF2044H 17
EPA Capture/Compare 3 EPA3 INT01 FF2002H 01 PTS01 FF2042H 16
EPA Capture/Compare 4–9,
EPA 0–9 Overrun,
EPA Compare 0–1,
Timer 1 Overflow,
Timer 2 Overflow
EPA
x
INT00 FF2000H 00 PTS00
FF2040H 15
PTS service is not recommended because the PTS cannot determine the source of shared interrupts.