Apple IIe - Page 256

256 Apple lie Users Handbook
monitor supplies the move, M, command to accomplish this task
more easily.
To
move a block of data, the monitor must know the data 's
source as well as its destination . It seems that this would require
four addresses: the start and end of both the source and
destination . One of these addresses supplies redundant informa-
tion , the ending address of the destination. The format of the
instruction, therefore, is as follows :
XXXX < YYYY.ZZZZ M
XXXX stands for the Hex destination starting address. YYYY refers
to the source starting address. ZZZZ refers to the source ending
address. The less than symbol can be thought of as a funnel
which channels data from the source to the destination.
*300: 0 0 0 0 0 0
*: 0 0 0 0 0 0
*: 0 0 0 0
*300.30F
0300- 00 00 00 00 00 00 00 00
0308- 00 00 00 00 00 00 00 00
380: 10 20 30 40 50 60 70 80
*:90 AO BO CO DO EO FO FF
*380.38F
0380- 10 20 30 40 50 60 70 80
0388- 90 AO BO CO DO EO FO FF
*300 < 380.38FM
*300.30F
0300- 10 20 30 40 50 60 70 80
0308- 90 AO BO CO DO EO FO FF
Comparing Blocks of Memory
The monitor 's verify , V, command compares two blocks of
memory. If these two blocks are identical, the monitor will
return the asterick prompt. If these blocks are not identical , the