A650 Memory-allocation issue - General Discussion and Assistance - CHDK Forum

A650 Memory-allocation issue

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A650 Memory-allocation issue
« on: 17 / March / 2008, 10:33:48 »
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Support for the A650 and A720 have been added to the latest SDM.

A720 works fine with a bootable disk and the following settings :-

RESTARTSTART=0x50000
MEMISOSTART=0x9D024
MEMISOSIZE=0x32000


The A650 will not boot, it hangs after the blue LED even with the following settings :-

RESTARTSTART=0x50000
MEMISOSTART=0x9D024
MEMISOSIZE=0x42000


I believe there was a problem initially with the A650 as data was being over-written so MEMISOSIZE was increased considerably (0x10000).

Any more information about that and just how much more can I increase MEMISOSIZE ?

(SDM 1.50 source not yet uploaded, website owner away for three weeks).


David

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Re: A650 Memory-allocation issue
« Reply #1 on: 17 / March / 2008, 12:18:44 »
The A650 will not boot, it hangs after the blue LED even with the following settings :-

MEMISOSTART=0x9D024

???
MEMISOSTART=0xA3F20 for A650.

Re: A650 Memory-allocation issue
« Reply #2 on: 17 / March / 2008, 13:00:58 »
MEMISOSTART=0xA3F20 for A650.


Yes, it is wrong in the above post but it is correct in the code.

So, the original question remains.

Why was MEMISOSTART increased by so much and how much more can I increase it ?

 

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