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README.VME @ a2aec0b7

Last change on this file since a2aec0b7 was eb36d11, checked in by Sebastian Huber <sebastian.huber@…>, on 04/25/18 at 13:06:08

bsps: Move documentation, etc. files to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

File size: 896 bytes

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1	README.VME: written by S. Kate Feng <feng1@bnl.gov> , 7/22/04
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4	Some VME modules(e.g. Oms58 motor controller) might require a PCI sync
5	command following the out_xx() function (e.g. out_be16()) if mvme5500 is
6	used as the SBC. The mechanism is a hardware hook to help software
7	synchronize between the CPU and PCI activities. The PCI sync is
8	implemented in pci/pci_interface.c. For more example of the usage,one
9	can reference the drvOMS58.cc file that is posted in synAppRTEMS of
10	http://www.nsls.bnl.gov/organization/UserScience/Detectors/Software/Default.htm.
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13	In spite of the PCI sync overhead for the Oms58 motor controller, I do
14	not see the runtime performance of RTEMS-mvme5500 being compromised as
15	compared with that of RTEMS-mvme2307. For example, it takes the same
16	time to run motor_init() of synAppRTEMS for 48 motor initializations
17	running either RTEMS-mvme2307 or RTEMS-mvme5500.
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