Changes between Version 16 and Version 17 of Component/Vci Block Device


Ignore:
Timestamp:
Nov 16, 2009, 10:15:03 PM (16 years ago)
Author:
alain
Comment:

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  • Component/Vci Block Device

    v16 v17  
    2828 * '''BLOCK_DEVICE_OP''' (write only)
    2929Type of operation, writing here initiates the operation.This register goes back to BLOCK_DEVICE_NOOP when operation is finished. The following operations codes are defined:
    30     a. `BLOCK_DEVICE_NOOP` : No operation
    31     a. `BLOCK_DEVICE_READ` : Transfer from flock device to memory
    32     a. `BLOCK_DEVICE_WRITE` : Transfer from memory to block device
     30    0. `BLOCK_DEVICE_NOOP` : No operation
     31    1. `BLOCK_DEVICE_READ` : Transfer from flock device to memory
     32    2. `BLOCK_DEVICE_WRITE` : Transfer from memory to block device
    3333
    3434 * '''BLOCK_DEVICE_STATUS''' (read only)
    3535State of the transfer. Reading this register while not busy resets its value to IDLE, and acknowledge the IRQ. Value may be one of :
    36     * `BLOCK_DEVICE_IDLE`
    37     * `BLOCK_DEVICE_BUSY`
    38     * `BLOCK_DEVICE_READ_SUCCESS`
    39     * `BLOCK_DEVICE_WRITE_SUCCESS`
    40     * `BLOCK_DEVICE_READ_ERROR`
    41     * `BLOCK_DEVICE_WRITE_ERROR`
    42     * `BLOCK_DEVICE_ERROR`
     36    0. `BLOCK_DEVICE_IDLE`
     37    1. `BLOCK_DEVICE_BUSY`
     38    2. `BLOCK_DEVICE_READ_SUCCESS`
     39    3. `BLOCK_DEVICE_WRITE_SUCCESS`
     40    4. `BLOCK_DEVICE_READ_ERROR`
     41    5. `BLOCK_DEVICE_WRITE_ERROR`
     42    6. `BLOCK_DEVICE_ERROR`
    4343
    4444 * '''BLOCK_DEVICE_IRQ_ENABLE''' (read/write)