Acrosser AR-B9612 - Manual (Page 6)

AR-B9612 User’s Guide
2-1
2. SYSTEM CONTROLLER
This chapter describes the major structure. The following
topics are covered:
l Microprocessor
l DMA Controller
l I/O Port Address Map
l Interrupt Controller
l Serial Port
l Real-Time Clock and Non-Volatile RAM
l Timer
l Watch-Dog Timer
l FLASH Disk
2.1 MICROPROCESSOR
The AR-B9612 use the ALI M6117 CPU, it is designed to
perform like Intel’s 386SX system with deep green features.
The 386SX core is the same as M1386SX of Acer Labs. Inc. and
100% object code compatible with the Intel 386SX
microprocessor. System manufacturers can provide 386
CPU based systems optimized for both cost and size.
Instruction pipelining and high bus bandwidth ensure short
average instruction execution times and high system throughput.
Furthermore, it can keep the state internally from charge leakage
while external clock to the core is stopped without storing the
data in registers. The power consumption here is almost zero
when clock stops. The internal structure of this core is 32-bit
data and address bus with very low supply current. Real
mode as well as protected mode are available and can run
MS-DOS, MS-Windows, OS/2 and UNIX.