The PC107A PCI Bridge/Integrated Memory Controller provides a bridge between the Peripheral Component Interconnect, (PCI) bus and PowerPC 603eTM, PowerPC 740TM, PowerPC 750TM or PC7400 microprocessors. PCI support allows system designers to design systems quickly using peripherals already designed for PCI and other standard interfaces available in the personal computer hardware environment. The PC107A provides many other necessities for embedded applications including a high-performance memory controller and dual processor support, 2-channel flexible DMA controller, an interrupt controller, an I2O-ready message unit, an inter-integrated circuit controller (Two-wire Interface), and low skew clock drivers. The PC107A contains an Embedded Programmable Interrupt Controller (EPIC) featuring five hardware interrupts (IRQ's) as well as sixteen serial interrupts along with four timers. The PC107A uses an advanced, 2.5V HiP3 process technology and is fully compatible with TTL devices.