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CBM-910 User’s Manual
CITIZEN 31/47
(2) SI / SO and US / RS Commands
SI / SO codes function in the same manner as US / RS as long as 8-bit data are assigned
(serial communication data bit length), which, however, are divided, under 7-bit assignment, into SI
(20H~7FH characters) print assignment and SO (A0H~FFH characters) print assignment functions.
1 Standard letter assignment (SI / US) command:
With SI (0FH)/ US (1FH) codes input, lateral enlargement is cancelled and the data following are printed in
standard letters.
This command can cancel only lateral enlargement, which dose not apply to x 4 enlargement.
2 Laterally enlarged letter assignment (SO / RS) command:
With SO (0EH)/RS (1EH) codes input in any columns, the data following are printed in prints enlarged double in
width. With line feeding or SI / SR code input, this command is cancelled.
Although standard and enlarged letters can be mixed within one line, automatic (buffer-full) printing takes place
when the number of columns reaches 24 (or 40) counted in standard letters.
[Receiving Data]
S O 1 2 3 4 5 6 7 8 6 0 C R
S O 1 2 3 S I A B C D C R
S O 1 2 3 S I A B C S O 1 2 C R
A S I 1 2 3 4 5 6 7 8 9 0 1 B
[Results of Printing]
1234567890
123
ABCD
123
ABC
12
Mixed printing
A
12345678901
B
Although the last letter has been assigned to lateral
enlargement, it is printed in standard letter as it is in 24
th
columns. (For 40-column mechanism this applied to
40
th
columns.)