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Atari coding BBS
| Re: Memory Config |
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Posted by: ggn
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Jul,12.2013-10:34
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hardware.txt (http://dbug.kicks-ass.net/dbugforums/cgi-bin/yabb2/YaBB.pl?num=1280674222) says:
$000424|word |Copy of contents of $FF8001 |memctrl
And for $FF8001:
##############ST MMU Controller ###########
-------+-----+-----------------------------------------------------+----------
$FF8001|byte |MMU memory configuration BIT 3 2 1 0|R/W
| |Bank 0 | | | ||
| |00 - 128k ------------------------------------+-+ | ||
| |01 - 512k ------------------------------------+-+ | ||
| |10 - 2m --------------------------------------+-+ | ||
| |11 - reserved --------------------------------+-' | ||
| |Bank 1 | ||
| |00 - 128k ----------------------------------------+-+|
| |01 - 512k ----------------------------------------+-+|
| |10 - 2m ------------------------------------------+-+|
| |11 - reserved ------------------------------------+-'|
One thing worth noticing if you go down that road though: There is the configuration of 2.5Mb STE that is falsely reported as 4Mb. If you need more than 2Mb of RAM then you have to be careful.
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