Difference between revisions of "OpenCS"
From Hackstrich
(Select lines figured out (I think)) |
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*** an expansion module (lets you chain more chassis, 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) | *** 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 | ** 2 controllers + 4 I/O modules + 2 PSUs in the base | ||
** 4 I/O modules in each expansion unit, up to 3 expansion units | ** 4 I/O modules in each expansion unit, up to 3 expansion units | ||
| − | ** Total of | + | ** 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) | * 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 13:41, 5 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)
- Slots will ideally all be equivalent so users can put power/ports where they want them, can be filled with:
- 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
