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Renesas US7750R HARP (Aspen) SDB Supported Features (Windows Embedded CE 6.0)

  • Article

1/5/2010

The following table shows hardware components that are supported in the board support package (BSP) for the Renesas US7750R HARP (Aspen) software development board (SDB).

This SDB uses the SH4 microprocessor.

Hardware component SH4 hardware support SH4 BSP support

RAM

64 MB

RAM image

Flash

32 MB Intel DA28F640J5

Yes

Boot ROM

No

Not applicable

Timers

3

Yes

Real-time clock

Yes

Yes

VGA

MQ200

MQ200

LCD

Yes

Yes

Ethernet

SMC91c100

Debug Ethernet card

Serial

2

Yes

PCMCIA or CF

2

Yes

Mouse

Ee479005.note(en-US,WinEmbedded.60).gifNote:
The mouse wheel is not supported.

PS/2

Yes

Keyboard

PS/2

Yes

Hardware reset through a cold boot

Yes

Yes

Hardware reset through a warm boot

Yes

Yes

Software reset through a warm boot

Not applicable

Yes

Touch controller

No

Not applicable

USB host

2 open host controller interface (OHCI)

Human interface device (HID)

USB function

No

Not applicable

Serial Infrared (SIR)

Yes

No

Fast Infrared (FIR)

FIR header

No

Audio output

Yes

Yes

Audio input

Yes

Yes

Parallel for printing

1

No

IDE device

No

No

Smart card

No

No

Floppy disk

No

No

TV output

No

No

Floating point unit

Yes

Yes

Expansion connector

Proprietary, compact PCI

No

PCI slots

0

0

Compact PCI or PCI extender

HARP

No

Logic analyzer probes

Yes

Yes

JTAG

Yes

Yes

Debug LEDs

Yes

Yes

Companion or add-on cards

Tahoe HD64465

Yes

Form factor

Custom

Not applicable

Renesas US7750R HARP (Aspen) SDB Hardware Restrictions and Limitations

The following limitations are related to hardware issues on the Renesas US7750R HARP (Aspen) SDB.

  • If you are using the MQ200 display card or the Tahoe board, be sure switch S1 on the MQ200/Tahoe is set to the off position (towards the I/O Ports on the front of the board). Otherwise, the display will not function, and "ERROR: DDI(MQ200): Invalid PCI vendor/device id (0x00004d51)" will be seen in the debug output.
    S1 is part of the set of four DIP switches on the upper side of the Tahoe expansion board immediately behind the PCMCIA sockets.
  • The PS/2 mouse has some known failures on the Renesas US7750R HARP (Aspen) SDB BSP. To avoid this problem, use a USB mouse.
    Because the Renesas boards only support low-speed asynchronous communication, you can only use the USB mouse and keyboard to boot a Windows Embedded CE device.
  • The keyboard driver does not support keyboard status lights (CAPS LOCK, NUM LOCK, SCROLL LOCK), so these lights are disabled in the driver.
  • There is a known hardware issue with the USB ports.
    The onboard USB controller hardware restricts how much data can be presented to the controller at one time. This limits the usable USB bandwidth and restricts support to low-speed devices such as keyboards and mice.
    Given this limitation, Microsoft has done only limited testing of USB devices. If you need full support for all types of USB devices, consider using a PCI-bus extender and an external USB controller.
  • PCI bus-mastering functionality is not available on the Renesas US7750R HARP (Aspen) SDB. Consequently, it is impossible to test key multimedia features like DVD and Direct3D, which require the use of PCI devices on the SDB.
    The only available workaround is to use a different SDB from a third-party SDB manufacturer. For recommendations, contact Renesas.
  • The audio driver does not support full-duplex mode.
    To have a real-time communications voice over IP (VoIP) session, the OEM or application developer should implement half-duplex communication support over the existing audio driver. Because the audio driver is not a low-latency driver, there are delays in voice communication.
  • The Parallel and IrDA drivers have been removed in CE 6.0.
  • When the BSP for the Renesas US7750R HARP (Aspen) SDB is configured for a release build of Enterprise Web Pad with Applications, the build runs slowly due to insufficient memory.
    To resolve this issue, update the Config.bib file to take advantage of the full 64 MB of RAM available in the Renesas US7750R HARP (Aspen) SDB.
  • By default, CE 6.0 automatically detects and uses all the memory on the board.

See Also

Tasks

How to Use the BSP for the Renesas US7750R HARP (Aspen) SDB

Concepts

Setting Up the Renesas US7750R HARP (Aspen) SDB Hardware