1.
VERIFY: If the Lock bit is set to the "read suppress", all slave ICs
will be verified with fixed value of $FF to confirm this setting. If it's
not, all slave ICs will be compared with the master contents.
2.
COPY: Erase all slaves first, copy the contents of the master, then set
the Lock bits in all slaves according to the bits stored in the PSB. At the
last, a VERIFY command was executed.
3.
DOWNLOAD: Erase the slaves first, transfer data to the slave's
memory array, then set the Lock bits in all slaves according to the bits
stored in the PSB.
Atmel AT90S1200 operation
The setting of the Lock and Fuse bits are stored in the
Protect-Setting-Byte (PSB) of the programmer. It also control some
command's (COPY, VERIFY and DOWNLOAD) operation.
The followings explain each bit's meaning and location. Please be
noted that the programmer doesn't use any of these information stored in
the master IC.
BIT 7 6 5 4 3 2 1 0
x x SPI x x LB2 LB1 RCE
1.
CHECKSUM: Show the checksum of the Flash memory portion in
the master IC. Its Fuse and Lock bits information also be shown in [xx]
format.
2.
VERIFY: First, compares the Fuse and Lock bits of all the slaves
with the settings in PSB. Second, if the Lock bits is set to the "read
suppress", all slave ICs will be verified with value $FF to confirm this
setting. If it's not, all slaves will be compared with the master's contents
(the flash portion).
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