[FRAM71] Pre-Production Batch
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02-07-2015, 06:55 PM
(This post was last modified: 02-07-2015 06:56 PM by Hans Brueggemann.)
Post: #14
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[FRAM71] Bankswitching?
In a recent e-mail, Dave Frederickson pointed out to me that it would be nice to be able to access all 512kB of FRAM, by using some sort of bank switching scheme. i find this idea quite intriguing and FRAM71's FPGA still has ample amount of free logic available (as per V.421) to handle such a task. alas... i'm short on ideas of how to implement that to gain maximum use from such a feature. when looking at the used FRAM address space (nibble addresses),
00000-1FFFF is reserved for diagnostic/alternate O/S, 20000-2BFFF is unused, 2C000-2C01F is reserved for Memory Configuration, 2C020-2FFFF is unused, 30000-FFFFF is reserved for the 0..12 configurable Memory Chips. that gives basically the range 20000-2BFFFF as a possible candidate for bankswitching. so, what can we do with that? is it worth a try in the light of the amount of FRAM already available? what's your take on this, valued users? hans |
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