Experimental Physics and
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I plan to buy a MVME-177 from Motorola in order to have a second spare CPU. They discontinued production of the model MVME177-013 in August 2000, and now offer a replacement based upon their Petra ASIC. The part number is now MVME177P-64SE. Has anyone used the (new) Petra ASIC boards? Are they swappable with the original MVME-177 boards? We use Petra versions of the MVME-162 and MVME-172, which are completely plug compatible, although they do look a bit different to the older boards. Wind River doesn't make mention of a separate bsp for the new MVME177P . The same BSP works with both versions, although there is a one-line change that you should probably make (it's not clear whether it's still needed as it was a workaround for a bug in the Petra chip that might have been fixed in later versions, but as the modified code works with pre-Petra boards anyway it's worth making it just in case): In the sys596IntDisable() routine (sysLib.c), replace the code *PCC2_LANC_IRQ_CR &= ~LANC_IRQ_CR_IEN; with *PCC2_LANC_IRQ_CR &= ~ABORT_IRQ_LEVEL; Without this modification it is possible for a busy network to cause the network connection to become unreliable, although you might not notice it. I have an similar change in all my mv16x and mv17x BSPs, just to be safe. - Andrew -- "Life is what happens while you're busy making other plans." - John Lennon
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ANJ, 10 Aug 2010 |
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