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Difference between revisions of "Talk:S5L8720 (Hardware)"
ChronicDev (talk | contribs) |
ChronicDev (talk | contribs) (Replacing page with '==Undocumented== stuff not neatly documented yet will be dumped here. iPod touch 2G uses ISL29003, datasheet [http://www.sendspace.com/file/ecvgvk here], for the als (ambient ...') |
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| + | ==Undocumented== |
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| − | ==Weird Registers (Code Snippet)== |
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| + | stuff not neatly documented yet will be dumped here. |
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| − | Here is the behavior of the weird registers I mentioned on the main article. Note that it does it to those four registers in vic0 and vic1, keep that in mind so you don't think that there are 8 of these weird registers: |
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| − | <pre> |
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| − | ROM:00004C84 VectorInterruptController_Init ; CODE XREF: Interrupts_Init+92�p |
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| − | ROM:00004C84 |
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| − | ROM:00004C84 var_8 = -8 |
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| − | ROM:00004C84 |
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| − | ROM:00004C84 000 90 B5 PUSH {R4,R7,LR} |
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| − | ROM:00004C86 00C 1B 4B LDR R3, =dword_38E00FE0 |
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| − | ROM:00004C88 00C 01 22 MOVS R2, #1 |
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| − | ROM:00004C8A 00C 52 42 NEGS R2, R2 |
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| − | ROM:00004C8C 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004C8E 00C 1A 4B LDR R3, =dword_38E00FE4 |
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| − | ROM:00004C90 00C 1A 48 LDR R0, =Vector_Interrupt_Address_Table |
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| − | ROM:00004C92 00C 01 AF ADD R7, SP, #0xC+var_8 |
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| − | ROM:00004C94 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004C96 00C 1A 4B LDR R3, =dword_38E00FE8 |
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| − | ROM:00004C98 00C 00 21 MOVS R1, #0 |
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| − | ROM:00004C9A 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004C9C 00C 19 4B LDR R3, =dword_38E00FEC |
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| − | ROM:00004C9E 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004CA0 00C 19 4B LDR R3, =unk_38E01FE0 |
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| − | ROM:00004CA2 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004CA4 00C 19 4B LDR R3, =unk_38E01FE4 |
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| − | ROM:00004CA6 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004CA8 00C 19 4B LDR R3, =unk_38E01FE8 |
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| − | ROM:00004CAA 00C 1B 68 LDR R3, [R3] |
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| − | ROM:00004CAC 00C 19 4B LDR R3, =unk_38E01FEC |
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| − | ROM:00004CAE 00C 1B 68 LDR R3, [R3] |
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| − | </pre> |
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| + | iPod touch 2G uses ISL29003, datasheet [http://www.sendspace.com/file/ecvgvk here], for the als (ambient light sensor) |
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| − | PS: This is from the [[VROM (S5L8720)|S5L8720]] SecureROM, in case you were wondering about the weird load address. |
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| + | uses LIS302DL, datasheet [www.st.com/stonline/products/literature/ds/12726.pdf here], for accelerometer |
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| − | ---- |
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| − | |||
| − | Chronic, those registers aren't any great cosmic mystery, they're the peripheral ID for the vic. Way back when, iBoot checked that against the ID for a PL192, which is probably why that old code is still there. The controller probably is a PL192, for that matter. Whatever data sheet you pulled all this off should have had this information. |
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| − | Also, everything on this page is unsourced. How do you know any of this? Do you have a data sheet for s5l8920? Did you interview a Samsung or Apple engineer? Did you write test implementations to verify the stuff on this page? I know from experience that there might be a few registers corresponding between the actual hardware and some data sheet you find for a related component, but often there's no 100% match. Please provide a reference for every register you mention. If you're not sure about some but believe the device has the same registers as a data sheet you have, cite the data sheet and your reasons for thinking that. Otherwise, this page will be misleading for anyone attempting to use the data. Thanks. --[[User:Planetbeing|Planetbeing]] 15:56, 16 February 2009 (UTC) |
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| − | ---- |
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| − | I am a tad unorganized, but I'll get them together and put them up as I have time instead of adding new stuff. Also, thanks for pointing out the VIC thing, it made me go back to the PL192 datasheet / ref manual and can't believe I missed it. Fixing now in another tab. [[User:ChronicDev|ChronicDev]] 20:59, 16 February 2009 (UTC) |
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| − | EDIT: fixed description for those regs [[User:ChronicDev|ChronicDev]] 20:59, 16 February 2009 (UTC) |
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Revision as of 04:05, 1 March 2009
Undocumented
stuff not neatly documented yet will be dumped here.
iPod touch 2G uses ISL29003, datasheet here, for the als (ambient light sensor)
uses LIS302DL, datasheet [www.st.com/stonline/products/literature/ds/12726.pdf here], for accelerometer
