5
Last change
on this file since eb36d11 was
eb36d11,
checked in by Sebastian Huber <sebastian.huber@…>, on 04/25/18 at 13:06:08
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bsps: Move documentation, etc. files to bsps
This patch is a part of the BSP source reorganization.
Update #3285.
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1 | README.VME: written by S. Kate Feng <feng1@bnl.gov> , 7/22/04 |
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2 | |
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3 | |
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4 | Some VME modules(e.g. Oms58 motor controller) might require a PCI sync |
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5 | command following the out_xx() function (e.g. out_be16()) if mvme5500 is |
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6 | used as the SBC. The mechanism is a hardware hook to help software |
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7 | synchronize between the CPU and PCI activities. The PCI sync is |
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8 | implemented in pci/pci_interface.c. For more example of the usage,one |
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9 | can reference the drvOMS58.cc file that is posted in synAppRTEMS of |
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10 | http://www.nsls.bnl.gov/organization/UserScience/Detectors/Software/Default.htm. |
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11 | |
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13 | In spite of the PCI sync overhead for the Oms58 motor controller, I do |
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14 | not see the runtime performance of RTEMS-mvme5500 being compromised as |
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15 | compared with that of RTEMS-mvme2307. For example, it takes the same |
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16 | time to run motor_init() of synAppRTEMS for 48 motor initializations |
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17 | running either RTEMS-mvme2307 or RTEMS-mvme5500. |
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18 | |
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19 | |
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