Intel Embedded Intel486 Hardware Reference Manual page 328

EMBEDDED Intel486™ PROCESSOR HARDWARE REFERENCE MANUAL
The Intel486 processors contain a JTAG (Joint Test Action Group) test-logic unit, which you can
use to test the processor and its connections to the system. The JTAG specifications with which
this unit complies are documented in Standard 1149.1-1990, IEEE Standard Test Access Port
and Boundary Scan Architecture and its supplement, Standard 11.49.1a-1993. You can also refer
to the "Boundary Scan" section of the individual Intel486 processor datasheets for more informa-
tion on using the JTAG unit.
10-44