Return to mvmeppc.mdwn CVS log

Up to [NetBSD Developer Wiki] / wikisrc / ports

Annotation of wikisrc/ports/mvmeppc.mdwn, revision 1.1

1.1     ! mspo        1: [[!template id=port
        !             2: port="mvmeppc"
        !             3: cur_rel="6.0"  
        !             4: future_rel="7.0"
        !             5: changes_cur="6.0"
        !             6: changes_future="7.0"
        !             7: thumbnail="http://www.netbsd.org/images/ports/mvmeppc/mvme2600.gif"
        !             8: about="""
        !             9: NetBSD/mvmeppc is the port of NetBSD to Motorola's PowerPC VME Single Board
        !            10: Computers (SBC). The first Motorola SBC (68k-based) was introduced in 1988.
        !            11: Motorola has continued development on 68k and PowerPC based SBC VME modules.
        !            12: 
        !            13: Development activity on NetBSD/mvmeppc continues at a speed that depends on
        !            14: people's spare time and access to hardware. NetBSD runs on a subset of the now
        !            15: obsolete MVME160x family of PowerPC-based MVME boards, but support for more
        !            16: recent boards will be added as and when hardware becomes available to NetBSD
        !            17: developers.
        !            18: """
        !            19: supported_hardware="""
        !            20: ###Supported System Models
        !            21: 
        !            22: * MVME160x family 
        !            23: 
        !            24: ###Boot Options
        !            25: 
        !            26: 'Supported:'
        !            27: 
        !            28: * network
        !            29: 
        !            30: 'Unsupported:'
        !            31: 
        !            32: * disk
        !            33: * CD-ROM
        !            34: * tape
        !            35: 
        !            36: """
        !            37: additional="""
        !            38: ###What are the jumpers on the backplane
        !            39: 
        !            40: The jumpers on the backplane are for Bus Grant and Interrupt Acknowledge. Some
        !            41: VMEbus boards, like disk controllers, do their own VMEbus I/O instead of using
        !            42: DMA from the CPU. The I/O board requests control of the VMEbus, the arbiter on
        !            43: the CPU board releases control of the VMEbus, and then the arbiter on the CPU
        !            44: sends a Bus Grant signal down the backplane.
        !            45: 
        !            46: There are only 4 Bus Grant levels, and you can have several boards, on the same
        !            47: Bus Grant level. The Bus Grant signal daisy-chains down the backplane through
        !            48: each I/O board. If you have an empty slot you break the daisy-chain.
        !            49: 
        !            50: Backplane manufacturers put jumper pins next to the connectors so you can jumper
        !            51: across empty slots. Unfortunately the jumpers may be to the right or left of a
        !            52: slot depending on the manufacturer.
        !            53: 
        !            54: You may also find that some VMEbus boards don't pass on daisy-chain signals that
        !            55: they don't use. This means that you may have to leave jumpers on even when a
        !            56: board is in a slot.
        !            57: 
        !            58: If the boards are side-by-side without an empty slot between the CPU and the
        !            59: VMEbus boards you may not need any jumpers. That might be worth a try. 
        !            60: 
        !            61: 
        !            62: ###History
        !            63: Using NetBSD/prep as a base, NetBSD was ported to an MVME1603-051 by Steve
        !            64: Woodford. The board was one of two donated to the NetBSD Foundation by Gan
        !            65: Starling on the condition that a port be attempted.
        !            66: 
        !            67: Following receipt of the boards, and replacement of the VxWorks bootcode by a
        !            68: PPCBUG image kindly provided by Motorola Computer Group, NetBSD/mvmeppc was up
        !            69: and running multi-user within two weeks. 
        !            70: """
        !            71: ]]
        !            72: [[!tag tier2port]]