IBM 5256-1 Maintenance Information Manual page 88

190
A Page 1-68
- - - - - - - - - - - - - - - Diagnostic Microcode - - - - - - - - - - - - - - - - -
Performs the micro-
Halt No
Halt No
Halt __ N, . ; . . '
o.;;......,~
Checks the micropro-
cessor, data paths,
registers in the MPU,
read/write storage and
read only storage
Checks read/write storage
with patterns
If the Cable Thru feature
is installed and the
address switches are set
to 7, the cable adapter
test fails because of an
invalid address
Wiring Diagram,
Diagnostic Aids
Maintenance
5256 MIM
1-71