Motorola MC68030 User Manual page 250

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so
S 1 S2 Sw Sw Sw Sw Sw Sw S3 Sw Sw Sw Sw S4 S5
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S 1 S2 S3 Sw Sw Sw Sw S4 S5
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X===:X~
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~A3~.AO~=~10~00
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~~~=:X~
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r
BURST ABORTED
t
INTERNAL
I
RERUN CYCLE TO GET LAST
BUS ERROR ASSERTED PROCESSING 3 BYTES DF OPERAND
0111 1000
VALUE OF AJAO INCREMENTED BY THE SYSTEM HARDWARE
Figure 7-53. Long-Word Operand Request -- BERR on Second Access
read cycle for the second portion with CBREQ negated, as shown in Figure
7-53. If BERR is asserted again, the MC68030 then takes an exception. The
MC68030 supports late bus errors during a burst fill operation; the timing is
the same relative to STERM and the clock as for a late bus error in a normal
synchronous cycle.
MC68030 USER'S MANUAL
MOTOROLA