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MOTOROLA M68040 USER’S MANUAL 7- 23
1) SET R/W TO WRITE
2) DRIVE ADDRESS ON A31–A0
3) DRIVE USER PAGE ATTRIBUTES ON UPA1, UPA0
4) DRIVE SIZE ON SIZ1, SIZ0 (LINE)
5) DRIVE TRANSFER TYPE ON TT1, TT0
6) DRIVE TRANSFER MODIFIER ON TM2–TM0
7) CIOUT BECOMES VALID
ACCEPT DATA
1) DRIVE DATA ON D31–D0
2) SAMPLE TA
3) SAMPLE TBI AND TCI (FOR FIRST TRANSFER)
1) NEGATE TA (IF NECESSARY)
2) INCREMENT ADDRESS BITS A3, A2 (IF 
NECESSARY)
TERMINATE CYCLE
ADDRESS DEVICE
SUPPLY DATA
START NEXT CYCLE
PROCESSOR EXTERNAL DEVICE
1) DECODE ADDRESS (FIRST TRANSFER ONLY)
2) LATCH DATA ON D31–D0
3) ASSERT TA
UNTIL FOUR LONG
WORDS TRANSFERRED
1) REMOVE DATA FROM D31–D0
2) NEGATE TIP (IF REQUIRED)
END OF BURST
UNTIL FOUR LONG
WORDS TRANSFERRED
WHEN FOUR LONG
WORDS TRANSFERRED
8) ASSERT TS FOR ONE CLOCK
9) ASSERT TIP
Figure 7-16. Line Write Transfer Flowchart
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