LBI-39055
4

PERSONAL COMPUTERS

In most cases, the Personal Computer (PC) used with
the C3 Maestro console is delivered with the Logic Board
installed, its hard disk drive formatted and MS-DOS
operating system software installed on the hard disk drive.
The C3 Maestro application software is also installed on
the drive.

Hardware

Table 1 lists the PCs approved for use with a C3
Maestro console system. Use of an unapproved computer
will void the console system's warranty and support
services. Subsequent to the printing of this manual,
additional PCs not listed in the table may be approved.
TABLE 1 −− APPROVED PERSONAL COMPUTERS
FOR USE WITH THE C3 MAESTRO
MANUFACTURER MODEL NO. OR TYPE
Hewlett-Packard Vectra 25N
Hewlett-Packard 486SX/25
Data General Dasher 386SX/16
Data General Dasher 386SX/20
Data General* 386/25A
Compaq 386S
* Manufactured for Data General by Acer; all plastic case.

Operating System Software

The PC will have either MS-DOS version 3.3, 5.x or
6.x installed on its hard drive. MS-DOS 5.x or 6.x is
preferred. All Data General and Hewlett-Packard
computers ship from the factory with either MS-DOS 5.x or
6.x. MS-DOS 4.x is not approved for use with the C3
Maestro console system.
BOARD SET-UP
IMPORTANT NOTE
Unless otherwise noted, all procedures in this
manual should be performed in the order
presented.

LOGIC BOARD

Normally, the Logic Board is configured correctly and
installed inside the PC before the C3 Maestro console
system is delivered to the customer. The following
information is presented for reference only.

DIP Switches

SW1 −− Dual-Port Address DIP Switch
All positions of DIP switch SW1 on the Logic Board
should be in the "ON" or "CLOSED" position. This sets the
base address of the dual-port RAM chip on the board to
D000:0000 (hex). SW1 switch should never be configured
in any other way. Figure 2 shows the "0000" setting.
Figure 2 −− Logic Board SW1 Factory Setting
SW2 −− Interrupt (IRQ) DIP Switch
DIP switch SW2 on the Logic Board sets the board's
interrupt request (IRQ) line. It should be set with position 1
"ON" or "CLOSED" and all other positions "OFF" or
"OPEN". This sets the interrupt to seven (IRQ7). Normally,
SW2 should not be configured in any other way. Figure 3
shows the setting. This setting is not a binary-code decimal
equivalent representation of the interrupt number; the
switch simply provides a single-pole four-throw switch
function using four single-pole single-throw DIP switches.
Logic Boards previous to Rev. A were not equipped
with SW2; the interrupt was hardwired as IRQ7.
Figure 3 −− Logic Board SW2 Factory Setting