RCA CDPl8S693 User Manual page 37

3 6 ___ User Manual for Microboard Computer Development System CDP18S693 & CDP18S694
Notes
(1) Although CRA makes every effort to increment the location counter properly when it processes
statements that contain errors, it is, of course, possible for the location counter to have a
value at any given point different from that which it would have for an error-free program. As a
result, it is conceivable that the BRANCH OUT OF PAGE error diagnostic e ith e rw ill occur
erroneously or will not be generated when it should be.
(2) The semicolon separating m ultiple statements in a line is used mainly as a checking device.
When CRA has processed an error-free statement and is reinitializedto lo o ka tth e nextone, the
intervening semicolon is merely ignored. Thus, it is not really mandatory that the semicolon be
used between two statements on a line, if the first is " known" not to contain errors. Clearly,
however, it is a necessary practice not only for readability, but also forve rifica tio n purposes.
Error
Code
01 UNRECOGNIZED MNEMONIC OR MISSING COMMA
02 PREVIOUSLY DEFINED SYMBOL
04 INVALID CHARACTER WITHIN BINARY CONSTANT
05 BINARY CONSTANT TOO LONG
06 EXPECTED HEX OR DECIMAL CONSTANT HERE
07 UNDEFINED SYMBOL
08 EXPECTED EXPRESSION HERE
09 INVALID CHARACTER WITHIN HEX CONSTANT
10 MISSING TRAILING QUOTE IN TEXT CONSTANT
11 PERIOD ERROR
12 LEADING CHARACTER ERROR
14 BRANCH OUT OF PAGE
15 INVALID REGISTER NUMBER
16 DEVICE NUMBER OUT OF RANGE
OVFL SYMBOL TABLE SPACE EXHAUSTED
TABLE V III—Summary of CRA Error Messages
Meaning