Hitachi US7729 HARP (Keywest) SDB Supported Features
The following table shows the supported features in the board support package (BSP) for the hardware components on the Hitachi US7729 HARP (Keywest) SDB for SH3 microprocessors.
| Hardware component | Hardware support | BSP support |
|---|---|---|
| RAM | 64 MB | RAM image |
| Flash | 32 MB Intel DA28F640J5 | Yes |
| Boot ROM | Yes | Not applicable |
| Timers | 3 | Yes |
| Real-time clock | Yes | Yes |
| VGA | MQ200 built-in | Yes |
| LCD | Yes through the MQ200 | Not tested |
| Ethernet | SMC91c100 | Debug Ethernet driver only |
| 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 |
| Universal serial bus (USB) host | 2 OHCI ports; hardware does not support Bulk or Isochronous transfers | Only Human interface device (HID) devices supported |
| USB function | No, PCI Card | Not tested |
| Serial Infrared (SIR) | Yes | Yes |
| Fast Infrared (FIR) | FIR header | Yes |
| Audio output | Yes | Yes |
| Audio input | Yes | Yes |
| Parallel for printing | 1 | Yes |
| Integrated Device Electronics (IDE) | No | No |
| Smart card | PCMCIA Reader | Not tested |
| IEEE 1394 | No | No |
| Floppy disk | No | No |
| TV output | No | No |
| Floating point unit | No | No |
| Expansion connector | Prop, compact PCI | Prop, compact PCI |
| PCI slots | 0 | 0 |
| Compact PCI or PCI extender | HARP | HARP |
| Logic analyzer probes | Yes | Yes |
| JTAG | Yes | Yes |
| Debug LEDs | Yes | Yes |
| Companion or add-on cards | Tahoe HD64465 | Tahoe HD64465 |
| Form factor | Custom | Not applicable |
Hitachi US7729 HARP (Keywest) SDB Hardware Restrictions and Limitations
The Hitachi US7729 HARP (Keywest) SDB does not work well on an Auto (100/10) Ethernet network.
The PS/2 mouse has some known failures on the Hitachi Keywest (SH3) and Aspen (SH4) BSPs. To avoid this problem, use a USB mouse on these platforms. Because the Hitachi boards only support low-speed asynchronous communication, you can use the USB mouse and keyboard only to boot a Windows CE device.
The keyboard driver does not support keyboard status lights (CAPS LOCK, NUM LOCK, SCROLL LOCK) and hence these lights are disabled in the driver.
There is a known hardware limitation regarding the USB port on the Hitachi platforms. The on-board USB controller hardware on the Hitachi platforms restrict how much data can be presented to the controller at one time, which effectively limits the usable USB bandwidth and imposes limitations on the support for various types of USB devices on this platform. Given this limitation, Microsoft has done only limited testing of USB device on these Hitachi development platforms. If you need full support for all types of USB devices, you should consider using a PCI-bus extender and an external USB controller.
The PCI bus-mastering feature is not available on the Hitachi SH4 Aspen SDB, and this is a hardware limitation. Consequently, it is impossible to test key multimedia features like DVD and Direct3D, which require the use of PCI devices on the SH4 Aspen SDB. The only available workaround is to use a different SDB from a third-party SDB manufacturer. Contact Hitachi for recommendations.
Note The SH3 Keywest SDB does not have the PCI bus-mastering problem. PCI devices have been tested on this SDB using a HARP cPCI extender cage, although interrupts are not routed to slots 1 and 4, so these slots cannot be used.
The audio driver on these development boards does not support full-duplex mode. To have a Communications Service (real-time communications) Voice over IP (VoIP) session, an OEM or an application developer should implement half-duplex communication support over the existing audio driver. Because the audio driver is not a low-latency driver, there will be delays in voice communication.
The onboard IrDA hardware on the Hitachi development boards supports Fast IR; however, because of performance problems with the IrDA driver, the throughput rate is significantly slower than the Fast IR transfer.
See Also
How to Use the BSP for the Hitachi US7729 HARP (Keywest) SDB | Setting Up the Hitachi US7729 HARP (Keywest) SDB Hardware
Last updated on Wednesday, April 13, 2005
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