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

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 Note: 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