Memory layout: Difference between revisions
VRAM |
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| 0x17E10000 | | 0x17E10000 | ||
| 0x00001000 | | 0x00001000 | ||
| L2C-310 Level 2 Cache Controller (2MB) | | L2C-310 r3p3 Level 2 Cache Controller (2MB) | ||
|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| 0x18000000 | | 0x18000000 | ||
| 0x00600000 | | 0x00600000 | ||
| VRAM (divided in four banks) | | VRAM (divided in two areas VRAM A and B, four banks in total) | ||
|- | |- | ||
| style="background: red" | No | | style="background: red" | No | ||
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=== <code>0x1F000000</code> ([[New 3DS]] only) === | === <code>0x1F000000</code> ([[New 3DS]] only) === | ||
This area is used by [[QTM Services]],starting at offset <code>0x200000</code>, size <code>0x180000</code>. This area is not accessible to the GPU on the old 3DS. The old 3DS and New 3DS GSP module has <code>vaddr->physaddr</code> conversion code for this entire region. On the New 3DS, only the first <code>0x200000</code> bytes (half of this memory) are accessible to the GPU. | This area is used by [[QTM Services]] and Kernel11,starting at offset <code>0x200000</code>, size <code>0x180000</code>. This area is not accessible to the GPU on the old 3DS. The old 3DS and New 3DS GSP module has <code>vaddr->physaddr</code> conversion code for this entire region. On the New 3DS, only the first <code>0x200000</code> bytes (half of this memory) are accessible to the GPU. | ||
== ARM9 == | == ARM9 == | ||
| Line 638: | Line 638: | ||
FCRAM is partitioned into three regions of memory (APPLICATION, SYSTEM, and BASE). Most applications can only allocate memory from one of these regions (which is encoded in the [[NCCH/Extended_Header#ARM11_Kernel_Flags|process kernel flags]]). There is a fixed set of possible size of each memory region, determined by the APPMEMTYPE value in [[Configuration_Memory#APPMEMTYPE|configuration memory]] (which in turn is set up according to the [[FIRM#FIRM_Launch_Parameters|firmware launch parameters]]). | FCRAM is partitioned into three regions of memory (APPLICATION, SYSTEM, and BASE). Most applications can only allocate memory from one of these regions (which is encoded in the [[NCCH/Extended_Header#ARM11_Kernel_Flags|process kernel flags]]). There is a fixed set of possible size of each memory region, determined by the APPMEMTYPE value in [[Configuration_Memory#APPMEMTYPE|configuration memory]] (which in turn is set up according to the [[FIRM#FIRM_Launch_Parameters|firmware launch parameters]]). | ||
Support for APPMEMTYPEs 6 and 7 was implemented in [[NS]] with [[8.0.0-18]]. These configurations are only supported in the [[New_3DS]] ARM11-kernel, and are in fact the only ones supported there at all. Applications only get access to the larger memory regions when this is specified in their [[NCCH/Extended Header#New3DS System Mode|extended header]]. | Support for APPMEMTYPEs 6 and 7 (and 8?) was implemented in [[NS]] with [[8.0.0-18]]. These configurations are only supported in the [[New_3DS]] ARM11-kernel, and are in fact the only ones supported there at all. Applications only get access to the larger memory regions when this is specified in their [[NCCH/Extended Header#New3DS System Mode|extended header]]. | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
| Line 689: | Line 689: | ||
| 0x01400000 | | 0x01400000 | ||
|- | |- | ||
| 6 ( | | 6 and 8 (6 is the default on New3DS. With [[New_3DS]] kernel this is the type used when the value is neither 7 nor 8) | ||
| 0x0 | | 0x0 | ||
| 0x07C00000(124MB) | | 0x07C00000(124MB) | ||