* Re: RE: [ECOS] Mmu and Memory Layout
@ 2001-06-18 17:51 honda
0 siblings, 0 replies; only message in thread
From: honda @ 2001-06-18 17:51 UTC (permalink / raw)
To: Gary Thomas; +Cc: Lewin A.R.W. Edwards, ecos-discuss
>>> What's the main difference in the MMU configuration and Memory
Layout
>>>between the 1.3.1 and the current version. Version 1.3.1 did work on
>>>EDB7212, it hang on the MMU_INITIALIZE. But when I modified it for my
own
>>>system, it didn't work. By upgrade to the current version, it works.
Why?
>>
>> There was a discussion here recently (ish) about a bug in the MMU tables
>> which only mapped in the first 8K of on-chip SRAM. That was fixed.
>Other than this, I'm pretty sure that there were no other changes.
But the memory layout of RAM did look different. It is not continuous in
current version. But I did not know why such kind of arrangement.
Kuang-Yang Chuang
OES / ITRI
J220, Bldg. 78, 195-8, Sec. 4, Chung-Hsing Rd.
Chutung, Hsinchu 310, Taiwan, ROC
TEL: 886-3-5917546
FAX: 886-3-5917531
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2001-06-18 17:51 RE: [ECOS] Mmu and Memory Layout honda
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