The document describes the LOAD SETUP DEFAULTS function and its purpose, as well as the features and characteristics of the P55KTX ISA PCI mainboard.
This manual describes the Apollo P55KTX ISA/PCI mainboard, a high‑performance board based on the VIA Apollo VPX/97 chipset and supporting Intel Pentium, AMD K5/K6 and Cyrix processors. It includes chapters on hardware design, connector and jumper locations, BIOS configuration, power management, and technical reference maps.
The document also lists the board’s specifications such as supported memory types, expansion slots, integrated IDE and Super I/O controllers, and power‑supply requirements, helping users install and configure the system safely.
| Supported CPUs | Intel Pentium, Pentium MMX, AMD K5/K6, Cyrix 6x86/6x86L/6x86MX |
|---|---|
| Maximum System Memory | 256 MB SDRAM (3 × 168‑pin DIMM) |
| Cache | 512 KB L2 cache (pipelined burst SRAM) |
| Expansion Slots | 3 × 16‑bit ISA slots, 4 × 32‑bit PCI slots |
| IDE Interfaces | 2 × PCI‑IDE connectors, PIO Mode 3/4, Ultra‑DMA33 |
| ATAPI Support | CD‑ROM and other ATAPI devices on both IDE interfaces |
| BIOS | Award Plug & Play BIOS with ACPI and APM support |
| Power Supply Requirement for KBPO | 4 + 5 V SB ≥ 0.1 A |
It loads the system default data directly from ROM and initializes the associated hardware.
The board provides three 16‑bit ISA slots and four 32‑bit PCI slots.
It supports up to 256 MB of SDRAM using three 168‑pin DIMM slots, with 512 KB of L2 cache.
The board includes a floppy port, parallel port (EPP/ECP), two serial ports, a USB connector, a PS/2 mouse connector, and an AT‑style keyboard connector.