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8x2 ISA Backplane

8x2 ISA Backplane

The Cubix ISA backplane technology is based upon the concept of "joining", or "shunting", groups of slots together. When the backplane is manufactured, it consists of multiple groups of slots that are not electrically joined together. Between the standard ISA slots are special shunt slots (these slots resemble EISA slots in appearance). By inserting a Cubix shunt board into the shunt slot, the adjacent two groups are joined, forming a larger backplane segment.

Various configurations are available by inserting shunt boards into this backplane, as illustrated below.

Configuration Options

The following options are available by changing the location of shunt boards in the 8x2 ISA backplane. The options are listed in order by the number of available groups. The title under each diagram lists the number of groups followed by the number of slots in each group.

For example, the first diagram shows 2 groups (one group of 10 slots, one group of 6 slots). This configuration, with a BC Series plug-in motherboard in each group will give you two independent computers in the Cubix System (ERS, ESR/FT II). The first group would contain the BC motherboard, and have nine additional slots available. The second group would contain the BC motherboard, and have five additional slots available.

The options available will allow you to configure the system with two to eight BC Series motherboards (independent computers), with varying options for additional third party adapters and boards.

Note: The arrows pointing to the Shunt Slots show where the shunt boards must be installed for the shown configuration. Shunt slots without the arrow must be empty.

8x2t-2a.gif (5475 bytes)

2 Groups (10 + 6)

8x2t-2b.gif (5659 bytes)

2 Groups (8 + 8)

8x2t-3a.gif (5604 bytes)

3 Groups (10 + 4 + 2)

8x2t-3b.gif (5618 bytes)

3 Groups (8 + 6 + 2)

8x2t-3c.gif (5665 bytes)

3 Groups (8 + 4 + 4)

8x2t-3d.gif (5686 bytes)

3 Groups (6 + 6 + 4)

8x2t-4a.gif (5858 bytes)

4 Groups (8 + 4 + 2 + 2)

8x2t-4b.gif (5746 bytes)

4 Groups (6 + 6 + 2 + 2)

8x2t-4c.gif (5728 bytes)

4 Groups (4 + 4 + 4 + 4)

8x2t-5a.gif (5946 bytes)

5 Groups (4 + 4 + 4 + 2 + 2)

8x2t-5b.gif (5897 bytes)

5 Groups (6 + 4 + 2 + 2 + 2)

8x2t-6a.gif (6020 bytes)

6 Groups (6 + 2 + 2 + 2 + 2 + 2)

8x2t-6b.gif (6025 bytes)

6 Groups (4 + 4 + 2 + 2 + 2 + 2)

8x2t-7a.gif (6112 bytes)

7 Groups (4 + 2 + 2 + 2 + 2 + 2 + 2)

8x2t-8a.gif (6207 bytes)

8 Groups (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2)

CAUTION!

A maximum of 10 slots may be joined together using shunt boards. Failure to comply with this limitation may result in loss of data.

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