IBM 5155 Manual To Operations page 30

C The IBM Personal Computer BASIC message will
appear with a blinking cursor (if a diskette is not
loaded).
The
IBM
Personal Computer Basic
Version CX.XX Copyright
IBM
Corp. XXXX
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Ok
lUST 2RUN 3LOAO" 4SAVE" 5CONT 6LPT1 '7TRON 8TROFF 9KEY DSCREEN
If you received responses A, B, and C correctly your
IBM Portable Personal Computer has successfully
completed a POST.
If the responses are not correct, go to Section 2,
"Problem Determination Procedures."
1-18 Introduction