Socket-370 Motherboard Placement And Routing; Table 2-2. Different Board Size Lists For Socket-370 System - VIA Technologies Apollo Pro133A Design Manual

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2.2.2 Socket-370 Motherboard Placement and Routing

For Socket-370 CPU and Apollo Pro133A PC motherboard designs, two proposed placements and group signal routings for the

two most popular form factors (ATX and micro-ATX) are shown in figures 2-5 and 2-6 respectively. Detailed layout guidelines

and signal routings for the Pro133A chipset will be addressed later in section 2.4.

Each figure shows a full size of its respective form factor. The empty area at the bottom of each placement diagram can be

eliminated to reduce the board size. Table 2-2 shows the full size and the suggested compact size for each form factor

implementation.

Form Factor Type

ATX

12" x 9.6" (30.5cm x 24.5cm) 12" x 8.3" (30.5cm x 21cm)

Micro-ATX

9.6" x 9.6" (24.5cm x 24.5cm) 9.6" x 8.3" (24.5cm x 21cm) 1 AGP, 2 PCI, 1 AMR, 1 ISA, 2 DIMM

Preliminary Revision 0.5, November 19, 1999

Full size

Design Guide - VT82C694X Apollo Pro133 with VT82C686A

Compact Size

Specification

1 AGP, 5 PCI, 1 AMR, 1 ISA, 3 DIMM

Motherboard Design Guidelines

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