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Revision as of 11:30, 23 February 2006 by Horsten (talk | contribs) (Features)
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LASAT Masquerade PRO

The LASAT Masquerade 2 (1998) and later Masquerade PRO (1999) was created by LASAT Networks, as part of a product line of self-contained SOHO all-in-one servers (firewall/NAT/router, mail server etc.)

Unfortunately the company went bust, so very few of these devices were ever shipped, but they still fulfill their original purpose very well.

The Debian project still uses two Masquerade PRO, donated by LASAT, as MIPS autobuilders.


Feature Masquerade 2 Masquerade PRO
Size 1U 1U
Processor NEC VR4310 NEC R5000
Clock freq. 133/166 MHz 250 MHz
Network 2xAMD PCnet32 10/100Mbps 2xAMD PCnet32 10/100Mbps
IDE CMD643 IDE controller CMD643 IDE controller
Harddisk Room for 1x3.5" HD Room for 1x3.5" HD
RAM 16-128MB SDRAM SIMM 128MB on-board SDRAM (100MHz)
Flash  ?? 4MB (compressed kernel image limited to 1MB)
Expansion 1xPCI slot 1xPCI slot
  • PICVUE 2x16 LCD display
  • DS1603 RTC
  • HIFN 9710 compression chip
  • Address Filter FPGA
  • Ethernet TX/RX swap
  • Siemens PSB2115 ISDN BRI
  • PICVUE 2x16 LCD display
  • DS1603 RTC
  • HIFN 9710 compression chip
  • Address Filter/DMA Controller FPGA
  • Ethernet TX/RX swap
  • HDLC controller (V.35/X.25)
Console 3-pin RS-232 header on PCB 3-pin RS-232 header on PCB
Documentation Design Specification

Board Schematics

Design Specification

Board Schematics

Linux-mips 2.6.15 tested OK

Note: Features in red are not supported by the current linux-mips kernel releases. Features in amber are only known to work in certain older kernels.


Block diagrams

Serial Cable

If you want to do any debugging on your Masquerade, you'll need a serial cable. The cable conncets to the 6-pin (only 3 used) header on the PCB (J2). This header is not mounted on all boards, if it is not you'll need to mount the header plus an RS-232 buffer (IC34), see the design specification for details on which part to use. The cable design can be found here.


The LASAT devices have a "service mode" where you can use a special tool to upload a new kernel to the device. The protocol used is called EUCP, and is documented here. Tools to create the images and upload the files are available on the Debian instructions page, see Links.