HP t5700: Hardware 

• Hardware
• Firmware
• Linux

As always with HP models you need to check the small print. The t5700 comes in three models: DC639A, DC640A, DS435A. The model I have is the DC639A and was manufactured in April 2004.

I also have a unit labelled T5000 1G which, as far as I can see, uses exactly the same PCB and was manufactured in June 2003. The only difference I've been able to spot is that the paper label on the BIOS(?) chip reads V1.05-1G as opposed to V1.09-1G on the other. I assume this model was subsequently renamed the t5700.

Specifications

Processor
Type    Speed	Transmeta Crusoe TM5800 1GHz
Memory
Flash    RAM	256MB 256MB (max 512MB)
Video
Chip    Max resolution	ATI Rage XL 1600 x 1200 16-bit colour
Ports
Network    USB    Serial    Parallel    PS/2	10/100 4 x USB1.1 1 1 None
Power
Plug    Off    Running	12V 0 W 9-14W
Dimensions
H x W x D (mm)	205 x 55 x 195 (Excluding Stand)
Security
	Kensington Lock Slot Mounting Bracket

The embedded operating system is Windows XPe sp1. The processor apparently grabs 16MB of the system memory.

The DC640A only has 192MB of flash.

The DS435A has 192MB of flash and the CPU clock speed drops to 733MHz.

CPU

For those to whom it matters here is some detail from Linux's /proc/cpuinfo

vendor_id	:	GenuineTMx86
cpu family	:	5
model	:	4
model name	:	Transmeta(tm) Crusoe(tm) Processor TM5800
stepping	:	3
flags	:	fpu vme de pse tsc msr cx8 sep cmov mmx longrun lrti constant_tsc eagerfpu

PCI

00:00.0 Host bridge: Transmeta Corporation LongRun Northbridge (rev 03)
00:00.1 RAM memory: Transmeta Corporation SDRAM controller
00:00.2 RAM memory: Transmeta Corporation BIOS scratchpad
00:0d.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Rage XL PCI (rev 27)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8231 [PCI-to-ISA Bridge] (rev 10)
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:11.2 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 1e)
00:11.3 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 1e)
00:11.4 Bridge: VIA Technologies, Inc. VT8235 ACPI (rev 10)
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 40)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102/VT6103 [Rhine-II] (rev 51)

Power Supply

The unit requires a 12V supply. If yours came without one a unit can be easily sourced. I bought a 12V 3A unit on ebay that was advertised as being a replacement one for an LCD display. I'm not too sure of the exact dimensions required for the plug, but a 5.5mm external 2.1mm internal plug seems to fit.

Expansion

The Flash memory (top left in the photograph) is easily replaceable. It's a DOM plugged into a standard 44-pin IDE connector.

The RAM is a standard 200-pin SODIMM. Whilst the standard memory for this model is 256MB this one actually came with a 512MB SODIMM. The datasheet on the HP Website has the unhelpful comment of Memory Slot: 256-MB DDR SDRAM standard. My t5700 came fitted with a 512MB module. It is manufactured by Kingston and is marked: KTC-P2800/512 which is a 266MHZ (PC2100) SODIMM. From the TM5800 datasheet it would appear that this is the fastest memory speed supported by the integrated memory controller.

Click on the photo for a larger version.

On looking at the PCB my first thought was "What on earth is the PCI expansion slot is for?" as there is minimal clearance above it once the metal cover is fitted. However I've since discovered that HP do supply a small riser and alternative side panel so that you can fit a PCI card (See right).