Difference between revisions of "OpenCS"

From Hackstrich
(Very rough initial notes.)
 
(Select lines figured out (I think))
Line 9: Line 9:
 
*** an I/O module (gives you serial ports)
 
*** 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.
 
* 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
 +
** Total of 20 select lines needed
 
* Controllers will have an Ethernet port and two serial ports on them (console/aux)
 
* Controllers will have an Ethernet port and two serial ports on them (console/aux)
 
** Probably PIC32-based makes the most sense
 
** Probably PIC32-based makes the most sense
 
* I/O modules will have up to 8 serial ports on them
 
* I/O modules will have up to 8 serial ports on them
 
** Probably CPLD-based makes the most sense
 
** Probably CPLD-based makes the most sense

Revision as of 12:42, 3 October 2012

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

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
    • Total of 20 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