Neo FreeRunner Memory Mapping

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(New page: == GTA02 Memory Mapping == nCS0: 00000000 07FFFFFF 4K steppingstone or NOR (Aux held down) nCS1: 08000000 0FFFFFFF Glamo nCS2: 10000000 17FFFFFF nothing mapped nCS3: 18000000 1FFFFFFF ...)
 
(Fix SDRAM mapping (see 2442 specs, table 5-1))
 
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== GTA02 Memory Mapping ==
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The first block holds a little 4KByte RAM buffer that is auto-filled
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from NAND by CPU hardware, called "steppingstone" when we boot from
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NAND, or the NOR is mapped in there.
  
nCS0: 00000000 07FFFFFF  4K steppingstone or NOR (Aux held down)
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nCS0: 00000000 07FFFFFF  4K steppingstone or NOR (Aux held down) <br>
nCS1: 08000000 0FFFFFFF  Glamo
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nCS1: 08000000 0FFFFFFF  Glamo <br>
nCS2: 10000000 17FFFFFF  nothing mapped
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nCS2: 10000000 17FFFFFF  nothing mapped <br>
nCS3: 18000000 1FFFFFFF  NOR
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nCS3: 18000000 1FFFFFFF  NOR <br>
nCS4: 20000000 17FFFFFF  nothing mapped
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nCS4: 20000000 17FFFFFF  nothing mapped <br>
nCS5: 28000000 2FFFFFFF  nothing mapped
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nCS5: 28000000 2FFFFFFF  nothing mapped <br>
nCS6: 30000000 37FFFFFF on-MCP SDRAM 128MB
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nCS6: 30000000 33FFFFFF on-MCP SDRAM 64MB <br>
nCS7: 38000000 3FFFFFFF external SDRAM 128MB
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nCS7: 34000000 37FFFFFF external SDRAM 64MB <br>
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[[Category:Neo FreeRunner Hardware]]

Latest revision as of 05:31, 9 October 2008

The first block holds a little 4KByte RAM buffer that is auto-filled from NAND by CPU hardware, called "steppingstone" when we boot from NAND, or the NOR is mapped in there.

nCS0: 00000000 07FFFFFF 4K steppingstone or NOR (Aux held down)
nCS1: 08000000 0FFFFFFF Glamo
nCS2: 10000000 17FFFFFF nothing mapped
nCS3: 18000000 1FFFFFFF NOR
nCS4: 20000000 17FFFFFF nothing mapped
nCS5: 28000000 2FFFFFFF nothing mapped
nCS6: 30000000 33FFFFFF on-MCP SDRAM 64MB
nCS7: 34000000 37FFFFFF external SDRAM 64MB

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GTA02 Memory Mapping

nCS0: 00000000 07FFFFFF 4K steppingstone or NOR (Aux held down) nCS1: 08000000 0FFFFFFF Glamo nCS2: 10000000 17FFFFFF nothing mapped nCS3: 18000000 1FFFFFFF NOR nCS4: 20000000 17FFFFFF nothing mapped nCS5: 28000000 2FFFFFFF nothing mapped nCS6: 30000000 37FFFFFF on-MCP SDRAM 128MB nCS7: 38000000 3FFFFFFF external SDRAM 128MB