AOpen AP43 User Manual page 13

Chapter
Features 1
The AP43 is a 486-based system board that utilizes the PCI/ISA
architecture. It supports the 486SX, DX, DX2, and DX4 series
microprocessors. It has four ISA-AT and three PCI slots for future
expansion. The system memory is expandable to 128 MB by adding
single in-line memory modules (SIMMs). The second-level cache is
upgradable to 512 KB and supports both the write-back and write-
through modes.
Two SiS application-specific integrated circuit (ASIC) chipsets with
built-in two-channel, PCI mode 4 IDE controller and a super I/O
controller are also incorporated in the design to further enhance
system performance. The board measures 220 mm x 250 mm (baby-
AT size).
User's Guide
1-1