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2. Features of UT62 Monitor Program
tape, the user needs to fill the block after writing the
last byte to the buffer to assure that the last block is
written to tape. The block size is 384 (l80H) bytes.
Successive calls to write for 383 bytes (block-1) would
assure the last block transfer. The user can also
examine the byte table to see how many bytes remain
in the block and write out that quantity. Another
technique is to change the table to a count of 383
(17FH). This technique will write the final byte in the
block buffer and cause the buffer to be written to tape.
INCREASING
ADDRESSES
Table lll—Read/write RAM table
BITS
7
6
5
4
MSB
TAPE
TAPE
~^m --------------------------------
M O T
i»w I
-
I
0
REW IND TAPE
The TAPE REWIND subroutine at location 8504H
is used to enable the "REM" input on Cassette Tape
units. The prompt
REWIND, THEN HIT ANY KEY
is written on the Video Monitor screen.
3
2
I
0
LSB
BLOCK NUMBER
l l < 5 F n
^
M C D
—
MSB, BYTE COUNT
u o t U
^m
M O D
NEXT 8 BITS,
LSB
BYTE COUNT
9 2 C S -3 4 2 I2
15
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