PC Interfacing, Communications and Windows Programming
pipelined-memory read and write operations that hides any memory access delays.
82371AB PCI/ISA IDE Xcellerator (PIIX4). Support for PCI bridge, USB control- ler, IDE controller, DMA controller, Interrupt controller, Power management and real-time clocks. The IDE interface supports Mode 3 and Mode 4 transfers at up to 16 MB/s and also Ultra DMA/33 which gives synchronous DMA transfers at up to 33 MB/s. It also supports ATAPI devices (such as CD-ROMs).
National Semiconductor PC97307 Super I/O Controller. Supports two serial ports, a multimode parallel port (standard mode, EPP and ECP), floppy disk controller (DP8473 and N82077 compatible), keyboard controller, mouse controller and Infra- red communications controller. The serial ports contain two 16450/166550A- compatiable UARTs which have an integrated 16-byte FIFO buffer for storing in- coming and outgoing characters. The floppy disk controller also has a 16-byte FIFO buffer.
Support for LS-120MB floppy disk drives and Desktop Management Interface
(DMI). DMI is a management system for networked PC, where a system manager can control the settings remotely.
Outline the importance of the TXC (system controller) device in the PC. Out-
line also the main ICs that are used in a PC.
Describe, in detail, the architecture of the HX PCI chip-set, and how the Pentium processor communicates with: DRAM memory, Level-2 SRAM cache, the PCI bus, the ISA bus and the IDE bus.
Explain, with reference to the PIIX3 and Pentium processor, how interrupts on the PCI and ISA busses are dealt with.
Explain, with reference to the Level-1 cache, the Level-2 cache and DRAM, how the processor accesses memory. What advantage does Level-1 over Level-2 cache, and the advantage that these have over DRAM.
Discuss the power management modes supported by the PXII3.
Which interrupts are supported with the AIP and where are they typically used?
Explain how the ISA and IDE busses share the same control and data lines.
Contrast the HX motherboard with the LX motherboard.
What are the advantages of using a SEC connected processor rather than a
Socket 7 connected processor.
11.19.10 If possible, open up a PC and identify the ICs on the motherboard.