Overview, Continued
Mouse | The Apollo IV motherboard includes a |
USB | The Apollo IV motherboard has two |
| future generations of |
| detected and configured through a single port. USB uses Plug and Play |
| technology. All USB peripherals are automatically detected and configured. |
| The AMIBIOS on this motherboard provides complete USB system BIOS |
| support. |
|
|
Power Connectors The Apollo IV motherboard has three power supply connectors.
RTC/CMOS RAM A real time clock and 128 bytes of CMOS RAM with a battery backup is provided on the motherboard.
Power Management Power management services include:
∙Green PC LED,
∙power management signal to Green
∙automatic IDE and video power down,
∙monitor blanking,
∙SMI (System Management Interrupt) support,
∙APM, and
∙system stop clock.
PCI Slots The motherboard conforms to the PCI Version 2.1 specification. The concurrent PCI architecture of this motherboard allows faster CPU, PCI, and ISA bus transactions for faster and smoother multimedia performance. This motherboard allows you to install either PCI V2.0 or PCI
The PCI slots are automatically configured by the AMIBIOS. The PCI slots operate synchronously with the CPU clock, as follows:
CPU External Clock Frequency | PCI Expansion Slot Frequency |
| |
| 66 MHz | 33 MHz |
|
| 60 MHz | 30 MHz |
|
|
|
|
|
Onboard I/O The Apollo IV Pentium ISA motherboard includes:
∙two
∙a
∙two
∙a
∙an infrared connector,
∙two USB connectors that support an optional riser card that permit high speed Plug and Play connection to
∙a keyboard connector, and
∙a PS/2 mouse connector.
Cont’d
6Apollo IV PCI Pentium ISA Motherboard User’s Guide