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Subject: Re: Iriver iFP7xx RAM size

Re: Iriver iFP7xx RAM size

From: Dave Hooper <dave_at_beermex.com>
Date: 2005-07-18

They could but that's unlikely ..
Actually, the more I google for info about the PNX0102, the more it seems
that there is no SDRAM interface after all.. seems that the programmable
audio coprocessor built into the core is just flash-programmable. I can't
find any mention of workspace or general-use RAM (or progamming notes for
the coprocessor) but, I suppose, why not. If that's really true then,
without docs, an iFP7xx port would be next to impossible.

----- Original Message -----
From: "nobby nobbs" <nobbynobbs@gmail.com>
To: "Rockbox development" <rockbox@cool.haxx.se>
Sent: Monday, July 18, 2005 10:34 PM
Subject: Re: Iriver iFP7xx RAM size

> Could a devive like the iFP use flash ram as system ram instead?
> On Mon, 18 Jul 2005 22:18:39 +0100, Dave Hooper <dave@beermex.com> wrote:
>
>> http://www.rockbox.org/twiki/bin/view/Main/IriverFP3XX5XXHardwareComponents
>>
>> This page suggests that the 5xx series at least already have 8MB SDRAM..
>> so a 5xx or 3xx port is already 'feasible'.
>>
>> The 7xx series CPU has 64KB of SRAM *on the processor*. This is the
>> same sort of approach as the coldfire CPU used in the iriver H1xx/H3xx
>> series, which have 96KB of SRAM. This is in *addition* to any general
>> SDRAM. I am quite certain that the 7xx also has SDRAM - a fully
>> functional mp3 player with LCD display and graphical user interface can
>> almost certainly not be implemented with just 64K of ram..
>>
>> d
>>
>> ----- Original Message ----- From: "Tomasz Malesinski"
>> <tmal@mimuw.edu.pl>
>> To: <rockbox@cool.haxx.se>
>> Sent: Monday, July 18, 2005 7:54 PM
>> Subject: Iriver iFP7xx RAM size
>>
>>
>>> Dan Hollis has recently updated the wiki page:
>>>
>>> http://www.rockbox.org/twiki/bin/view/Main/WebHome?topic=IriverIfpPort
>>>
>>> He wrote that iFP7xx players have only 64 kB of RAM. Having analyzed
>>> their firmware a bit I am quite sure that beside the PNX0102 internal
>>> SRAM they also have much more (probably 1 MB) SDRAM located at
>>> 0x24000000. Does anyone know for sure what the RAM size is? Has
>>> anyone opened an iFP7xx player and noted what chips are inside? This
>>> information seems to be quite important for the decision on whether to
>>> start porting Rockbox to iFP or not.
>>>
>>> I do not write to Dan directly, because his email address on his wiki
>>> page does not look promising to me (spamtrap?).
>>>
>>> -- Tomek Malesinski
>>> _______________________________________________
>>> http://cool.haxx.se/mailman/listinfo/rockbox
>>>
>>
>> _______________________________________________
>> http://cool.haxx.se/mailman/listinfo/rockbox
>
>
>
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Received on Mon Jul 18 23:51:52 2005


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