Difference between revisions of "83Plus:Ports:23"
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[[Category:83Plus:Ports:By_Address|23 - Flash Upper Limit]] | [[Category:83Plus:Ports:By_Address|23 - Flash Upper Limit]] | ||
[[Category:83Plus:Ports:By_Name|Flash Upper Limit]] | [[Category:83Plus:Ports:By_Name|Flash Upper Limit]] | ||
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== Synopsis == | == Synopsis == | ||
'''Port Number:''' 23h | '''Port Number:''' 23h | ||
Revision as of 13:55, 29 March 2005
Synopsis
Port Number: 23h
Function: Flash Execution Upper Limit
This port controls the upper of two flash execution limits.
Read Values
- [00h - FFh]: Flash pages above this value have execution permission. In TIOS this will be set to the last app page minus one.
Write Values
- [00h - FFh]: The new execution limit. You must enable flash access through port 14 first.
Comments
This port does not exist on the standard 83 Plus. See ports 5 and 16 instead. Execution of code from a page at or below this port's value and above the value in port 22 will cause the calculator to reset.
