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Evo T30: Hardware 


 


 

 



Compaq Evo T30

Specifications

Unlike its smaller brother (the T20 shown above next to the T30) the Evo T30 does include legacy ports. It uses the same Geode chipset as the T20. It is also noticeably larger. The unit I have was manufactured in March 2003 with 32Mb flash and 64Mb RAM.

The basic specs are:

Processor (&NB)National Semiconductors Geode GX1, 300MHz
MemoryDepends on model.
Variants are (Flash/RAM):
  • 16/32
  • 32/64
  • 48/64
  • 64/64
  • 64/96
  • 96/128
  • 128/128
  • 192/256
  • 256/256
Display (&SB)National Semiconductors CS5530A. max. 4 MB VRAM. 1280x1024/16bpp
Ports4 x USB1.1
NetworkNational Semiconductors DP83815 10/100 Mbit
SoundIntegrated in the CS5530A (Kahlua) - AC97 compatible
RTCDallas DS12885 (but NOT battery backed!)
Power12V <1 amps
Connections
  • 1 x Power socket
  • 4 x USB 1.1
  • 1 x VGA D-SUB 15
  • 1 x 3.5 mm jack phones/line out
  • 1 x 3.5 mm jack microphone in
  • 1 x Serial
  • 1 x Parallel
  • 1 x PCMCIA
  • 1 x RJ45 ethernet

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. (Maplin stock one - part # AQ88V type E).

Expansion

click for larger image If you open the T30 you (may) have the opportunity to increase the amount of flash and RAM. To remove the black cover you need to remove the single screw by the PCMCIA connector before you can slide it backwards and remove it. This reveals the circuit board (see photo right) and you'll find a SODIMM socket (at the bottom) and a 44-pin IDE connector at the top. In my unit the flash chip is soldered to the printed circuit board and is just above the IDE connector.

The SODIMM socket takes 144 pin PC133 SODIMM SDRAM memory. You'll find suitable memory advertised on ebay by people who've upgraded their laptops. A 128MB SODIMM can be picked up for £1 plus about the same again in postage charges. I believe the maximum memory supported is 256Mb. (So far I've only added 128Mb SODIMMs).

It would appear that these either have on-board flash and a 2Mbit BIOS or a Disk On Module plugged into the IDE connector and a 4Mbit Bios. The 2Mbit BIOS will not recognise/boot from the IDE connector. I haven't yet verified this.

Underneath the ribbon cable (that goes to the daughter board carrying a number of the I/O interfaces) there is a holder for a button cell should you wish to provide battery backup for the RTC.

Click on the photograph for a larger picture of the front and the rear of the PCB.

 


Any comments? email me.    Last update April 2010