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Apple Logic 7 User Manual

Page 246

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246

Appendix B

Logic Control—MIDI Implementation

LCD

Received:

, 12, oo, yy, …, F7 Update LCD

Transmitted:

None

oo

Display offset to write from:
00 thru 37 for upper line,
38 thru 6F for lower line.

yy

Data: ASCII equivalents for display characters—written from left to right—
and including line wrapping between upper and lower lines. Up to 100 data
bytes may be sent in one message.

Example:
Â

The following message writes “Hello” to the top left of the LCD on a Logic Control
master section.
F0 00 00 66 10 12 00 48 65 6C 6C 6F F7

Notes:
Â

There are 7 displayed characters per channel, with the exception of channel 8, which
is limited to displaying the first 6 characters. Internally however, the LCD stores 2 x 56
characters.

Â

In most cases, you will use the LCD in a scribble-strip fashion (text above each
channel). In this scenario, you should only use the first six characters per channel,
thus allowing for spaces between the text of each channel.

Â

The lower line can be switched into meter mode. See “Metering” on page 249 for
further details.

Â

While the LCD switches between horizontal and vertical metering modes, it ignores
LCD messages. You should delay LCD messages for at least 600 ms after sending an
LCD metering mode change message.