AOpen AP5T-OV User Manual
The AP5T is a
Another feature that AP5T intends to implement is the new power management features of Advanced Configuration Power Interface (ACPI).
The most attractive feature of ACPI for desktop user is probably OnNow, an idea from Notebook. You don't have to go through the entire boot process, into Win95, and back to your original work. Since ACPI specification is not fully defined yet. AP5T implementsSuspend to Hard Drive by BIOS, from user point of view, it is the same as OnNow. Note that you have to use VESA compatible VGA (AOpen S3 PCI PV70/PT70), Sound Blaster compatible sound card (AOpen AW35/MP56), Rockwell compatible Modem (AOpen F56/MP56) for Suspend to Hard Drive to work properly.
Note: ACPI is a specification of PC97, it is not fully defined yet. Although AOpen will try the best to support ACPI (normally, through BIOS modifications), it is still possible AP5T can not fully comply ACPI specification.
There are also more features start to be implemented from AP5T revision 3.xx.
Switching Power Regulator, Although Linear Regulator of AP5T revision 2 is good enough for AMD K6, AP5T revision 3.xx uses switching requlator to reserve the upgrade capability for new generation CPU.
CPU Thermal Protection, When CPU temperature is higher than a predefined value, the CPU speed will automatically slow down and there will be warning from BIOS and also ADM (AOpen Desktop Manager, similar as Intel LDCM), if ADM is installed.
FCC DoC certificate
The AP5T has also passed FCC DoC test, this means you can use any kind of housing with very low EMI radiation.
220 mm x 280 mm
Intel Pentium Processor P54C, PP/MT (P55C), AMD
K5/K6, Cyrix 6x86 and IDT C6.
FPM (Fast Page Mode) or EDO (Extended Data Output) 72-
pin SIMM x4, and SDRAM
256KB or 512KB
Intel 82430TX PCIset
ISA x3 and PCI x4
Two serial ports UART 16C550 compatible
One parallel port supports standard parallel port (SPP),
enhanced parallel port (EPP) or extended capabilities port
Floppy interface supports 3.5 inches drives with 720KB,
1.44MB or 2.88MB format or 5.25 inches drives with
360KB, 1.2MB format
disks or CDROM, mode 4 , bus master hard disk drives and
Ultra DMA/33 mode hard drives are also supported.
Two USB ports supported by USB bracket, the BIOS also
supports USB driver to simulate legacy keyboard.
PS/2 mouse supported by PS/2 mouse bracket.
Default AT compatible keyboard,
connector is optional.
RTC and Battery
RTC build in Intel PIIX4 chipset, Lithium
Suspend to Hard Drive
Supported by BIOS, save your work to hard disk and
resume within a very short time. VESA compatible VGA
and Sound Blaster compatible sound card required.
High efficient switching regulator for future CPU.
3.3V 10A and CPU core voltage 15A
protection to prevent any accident short circuit.
Warning when CPU temperature is higher than the