Changes

1,238 bytes added ,  18:43, 7 October 2019
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'''nx-abca2''' ('''Icosa''' or '''Hoag''' in '''Erista''', '''Iowa''' or '''Hoag''' in '''Mariko''') hardware types are variations of the retail and EDEV form factors.
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'''nx-abca2''' ('''Icosa''' in '''Erista''', '''Iowa''' in '''Mariko''') hardware types are variations of the retail and EDEV form factors.
    
'''nx-abcb''' ('''Copper''') is the SDEV unit. Among other differences, this has extra hardware to support HDMI output.
 
'''nx-abcb''' ('''Copper''') is the SDEV unit. Among other differences, this has extra hardware to support HDMI output.
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[8.0.0+] '''nx-abcc''' was added for '''Mariko'''.
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[8.0.0+] '''nx-abcc''' ('''Hoag''') was added for '''Mariko'''.
    
'''Erista''' memory is LPDDR4, while '''Mariko''' memory is LPDDR4X.
 
'''Erista''' memory is LPDDR4, while '''Mariko''' memory is LPDDR4X.
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==== HardwareType ====
 
==== HardwareType ====
[1.0.0+] This item is obtained by checking bits 8 and 2 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be 0 (Icosa), 1 (Copper), 2 (Hoag) or 3 (Invalid).
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[1.0.0+] This item is obtained by checking bits 8 and 2 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
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* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
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* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
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* 3 (Invalid).
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[4.0.0+] This item is obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be 0 (Icosa), 1 (Copper), 2 (Hoag), 3 (Iowa) or 4 (Invalid).
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Value 2 is reserved and considered invalid.
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[7.0.0+] This item no longer depends on fuses and can only be 0 (Icosa) or 0xF (Invalid) in retail units.
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[4.0.0+] This item is obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
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* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
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* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
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* 3 ('''Iowa'''; Mariko retail and EDEV), if new hardware type (bits 16-19) is '''Iowa'''.
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* 4 (Invalid).
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[8.0.0+] This item can be 0 (Icosa), 1 (Copper), 2 (Hoag), 3 (Iowa), 4 (Calcio) or 5 (Invalid). It still can only be 0 (Icosa) or 0xF (Invalid) in retail units.
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Value 2 is reserved and considered invalid.
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[7.0.0+] This item can be obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]], but is now only 0 (Icosa) or 0xF (Invalid) in retail units.
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 +
[8.0.0+] This item can be obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
 +
* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
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* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
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* 2 ('''Hoag'''; Mariko Lite retail and HDEV), if new hardware type (bits 16-19) is '''Hoag'''.
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* 3 ('''Iowa'''; Mariko retail and EDEV), if new hardware type (bits 16-19) is '''Iowa'''.
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* 4 ('''Calcio''').
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* 5 (Invalid).
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It is still only 0 (Icosa) or 0xF (Invalid) in retail units.
    
==== IsRetail ====
 
==== IsRetail ====