Akai S3200XL Instruction Manual download pdf (Page 10)

4 Getting Started MESA II

How to setup MESA II in a SCSI environment

SCSI (Small Computer System Interface) is a fast communication protocol designed

primarily for the data transfer of computer. Because of its speed, it is the required

environment to run MESA II in if you do a sample data transfer. If you use the Sampler

Editor, you must place the SCSI Plug file into the "PlugIns" folder.

Boot-up procedure is as follows;

* Turn off your Macintosh and Samplers, and connect them with standard

SCSI cables.

* Turn on the Samplers.

* Turn on the Macintosh after the Samplers are booted up fully.

All types of Macintosh support SCSI, but some of the Samplers offer SCSI board as an

option. In this case, the SCSI board has to be installed in the Sampler.

While a total of 8 SCSI IDs from 0 to 7 are provided, Macintosh uses both 0 (for the

built-in HD) and 7 (for Macintosh itself), leaving you 6 IDs for external devices. AKAI

Sampler is usually set to ID 6. All other devices need their own individual SCSI IDs. If

more than one device shares the same SCSI ID number, the system will freeze or

malfunction (see "Troubleshooting" Chapter).

A further potential problem is incorrect SCSI termination. Ensure that you have termi-

nated your SCSI system correctly. Most of system freezes are caused this way.

If you turn an external SCSI device on after the Macintosh is turned on, then you must

wait for it to fully boot up before you do anything on the Macintosh. If you do not and the

Macintosh tries to access SCSI during that time, then the Macintosh will freeze.

SCSI may also cause conflict with virtual memory, including RAM Doubler. If you must

use virtual memory and experience problems, try using OMS MIDI instead of SCSI

communication. However, because SCSI communication is much faster, an invest-

ment in more real RAM is recommended.

How to set up MESA II in an OMS Environment

MESA II is completely compatible with OMS v 2 (version 2.2 or later is recommended).

The OMS (Open Music System) MIDI (Musical Instrument Digital Interface) Environ-

ment provides an alternative to SCSI if you do not perform sample data transfer.

Set up procedure is as follows;

* Install OMS in your Macintosh.

* Connect your Macintosh and the Samplers with MIDI cables.

OMS is now an Apple standard and replaces the Apple MIDI Manager (which MESA II

does not support any longer). You can get OMS by downloading OMS from the OPCODE

web site or buying it from music software dealers.

To use OMS, move the OMS Plug file into the "PlugIn" folder.

Advantages of OMS are a neat user interface and a more robust system than SCSI, i.e.

once it is set up, it runs very stable.

If you need to run the MESA Keyboard Editor (which is a MIDI object), OMS is required.

A disadvantage of using OMS is a lower speed as compared to SCSI. It is not possible

to transfer the sample data by OMS MIDI. Therefore, it is recommended that you install

both OMS MIDI and SCSI and use each where most appropriate.

Audio data transfer

from Samplers to the

MAC needs SCSI to

run

If virtual memory

causes problems,

turn it off

Note on SCSI con-

nection

Faulty SCSI cables

cause some trouble,

use high quality

cables

For the installation of

OMS, refer to OMS

instruction manual.

The MIDI conversion

box is required to

connect MIDI cable

to the Macintosh.

Playing samples with

the Keyboard Editor

needs OMS MIDI.

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Akai S3200XL Instruction Manual Page 10

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