Digital Equipment VAXstation 4000 90, Service Information

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System ROM,
Continued
Figure 2–2 System ROM Part Format
R e s e r v e d f o r R O M s e t D a t a
R e s e r v e d f o r R O M s e t D a t a
V e r s i o n
R O M B y t e N u m b e r
M a n u f a c t u r i n g C h e c k D a t a ( 5 5 h )
M a n u f a c t u r i n g C h e c k D a t a ( A A h )
M a n u f a c t u r i n g C h e c k D a t a ( 3 3 h )
R O M P a r t L e n g t h
R e s e r v e d f o r R O M s e t d a t a
C h e c k s u m
R e s e r v e d f o r R O M s e t D a t a
R e s e r v e d f o r R O M s e t D a t a
V e r s i o n
R O M B y t e N u m b e r
M a n u f a c t u r i n g C h e c k D a t a ( 5 5 h )
M a n u f a c t u r i n g C h e c k D a t a ( A A h )
M a n u f a c t u r i n g C h e c k D a t a ( 3 3 h )
R O M P a r t L e n g t h
R e s e r v e d f o r R O M s e t d a t a
C h e c k s u m
w o r d 0
w o r d 1
w o r d 2
w o r d 3
w o r d 4
w o r d 5
w o r d 6
w o r d 7
w o r d 8
L a s t w o r d
1 5 . . 7 . . . . 0 . . 8
L J - 0 2 2 1 9 - T I 0
Continued on next page
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