OpenCS

From Hackstrich
Revision as of 13:20, 10 October 2012 by SarahEmm (talk | contribs) (Status update.)

OpenCS will be an open-hardware (and open-source) console server project.

Status

  • 2012-10-09: Schematic for CTLR done, started routing board.
  • 2012-10-08: Finished schematic/routing/CAM for IO232. Working on CTLR now.
  • 2012-10: Started putting design together

Specs

  • 1U rack-mount chassis with 8 slots (4 front, 4 back) connected by an internal backplane
    • Slots will ideally all be equivalent so users can put power/ports where they want them, can be filled with:
      • a PSU (up to two per system)
      • a controller (up to two per system)
      • an expansion module (lets you chain more chassis, up to two per system)
      • an I/O module (gives you serial ports)
  • SPI between modules with module select pins shifted by one by the backplane for each slot
  • Fully-expanded base chassis would be two PSUs, two controllers, and 4x 8-port RS232 modules.
    • 2 controllers + 4 I/O modules + 2 PSUs in the base
    • 4 I/O modules in each expansion unit, up to 3 expansion units
    • Each slot on the base gets 4 module select lines, which it can use or give to another chassis
    • Total of 4*8 = 32 select lines needed
  • Controllers will have an Ethernet port and two serial ports on them (console/aux)
    • Probably PIC32-based makes the most sense
  • I/O modules will have up to 8 serial ports on them
    • Probably CPLD-based makes the most sense