Roland GI-10 - Computer Connection with MIDI Processing Unit; Connecting to a MIDI Sequencer; About Received MIDI Data; Understanding the Checksum

Connecting with a computer equipped with
MIDI processing unit
GK-2 series
ae
|
IBM
PC/AT
=
aa
f MIC IN ae
on
DONTE
sarrar
nen
crane
acs
aoe
o © Mi == |
GK
IN
rtd
direiseea
ee
gO
Roland
Super
MPU
_
25
a
iouEeeTe
MIDI
OUT
i__
|
MIDI IN
ee _| ze
SC-55 mk Il, etc.
Connecting with a MIDI Sequencer
GK-2 Series
Poo
f MIC IN
lz a GIST Senne erence
“mao
“4 MIDI OUT MIDI IN
b MIDI OUT 2 i OUT 1
SC-55
mk
Il,
ete.”
MIDI
IN
I
MIDI
IN
(SOFT THRU: ON)
[Por al °° SE =
[Oo iawn) S|
OUTPUT L, R |
]
.
MC-50 mk Ii, etc.
INPUT
|
*1 If your sequencer only has one MIDI OUT
and you wish to trigger a MIDI sound genera-
tor
at
the
same
time,
use
a
MIDI
Patch
Bay
(Roland
A-880,
etc.)
to
distribute
the
sequencers MIDI OUT messages.
Vapour the Data Received
The parameters of the GI-10 can be changed by
receiving Exclusive messages from external MIDI
device. Exclusive messages consist of:
FOH Exclusive status
41H ID number (Roland)
10H Device ID (fixed to 10H)
70H Model ID (GI-10)
12H Command ID (DT1)
aaH Address MSB: upper byte of first address
of destination
middle byte of first
address of destination
lower byte of first address
of destination
bbH Address:
ccH Address LSB:
ddH Data
sum Checksum
F7H EQOX (end of exclusive)
What is the Checksum?
The checksum is the value which equals zero when
the address, size and checksum are added to it.
Assuming the Exclusive message address is
aabbccH and the size is ddH, it would be calculat-
ed as follows:
aa + bb +cc + dd = sum
sum + 80H = quotient... remainder
80H - remainder = checksum
For details on sending Exclusive data from a
MIDI sequencer or desktop music software,
refer to the relevant user’s manuals.
The MIDI implementation is not provided in
this manual. If it is required, please contact
customer service as listed at the end of this
manual.
A separate publication (optionally available)
provides complete details on the way MIDI is
implemented on this unit. Should you need
this document (such as for byte-level program-
ming), ask your dealer for the “MIDI
Implementation.”
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