Programming Model
http://www.motorola.com/computer/literature 3-49
3
write is attempted and rom a we is cleared, the write does not happen but
the cycle is terminated normally. See Table 3-17 for details of ROM/Flash
accesses.
Table 3-17. Read/Write to ROM/Flash
Cycle Transfer
Size
Alignment rom_x_64 rom_x_we Falcon Response
write 1-byte X 0 0 Normal termination, but no
write to ROM/Flash
write 1-byte X 0 1 Normal termination, write
occurs to ROM/Flash
write 1-byte X 1 X No Response
write 4-byte Misaligned X X No Response
write 4-byte Aligned 0 X No Response
write 4-byte Aligned 1 0 Normal termination, but no
write to ROM/Flash
write 4-byte Aligned 1 1 Normal termination, write
occurs to ROM/Flash
write 2,3,5,6,7,
8,32-byte
X X X No Response
read X X X X Normal Termination
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