os-v-216.zip

This new release provides improved terminal operation in six different areas. Those areas include:



1) Memory Test Improvements


The Apex II Memory Test has been improved to provide better feedback to the operator on Apex II memory configuration. When initially powering-on the Apex II this new operating system will perform a memory test to ensure the Apex II can correctly access all available memory. Should the unit encounter an error in the Apex II memory the unit will display an error message to inform the operator.



2) Error 20 Notification


The Apex II will now issue an "error 20" whenever there is an attempt to communicate over an incorrectly configured serial port while in the immediate mode.



3) Program Loading


Version 2.16b incorporates a "check routine" that monitors where applications programs are loading into memory. If the operator attempts to load an application that is larger than the available memory the Apex II will report an Error 11 (out of program memory). This check routine protects your data files by ensuring that no program files can extend into and potentially overwrite the data file storage area.



4) Parentheses Operations


The parenthesis handling routine had been amended to ensure more predictable operation when parenthesis extended both below and above address 10000h.



5) "Sleep-Mode" Operations


Every 7.5 seconds an interrupt is generated by the wakeup circuitry in the APEX II. This interrupt is used to power down the unit after a user defined period of time. To ensure more reliable and predictable results we have made improvements that will completely restore internal memory and totally re-write the LCD with the same information that was present prior to entering into the "sleep mode".



6) Saving Files to Flash
The Apex II with 512K Flash* has 126k of unused Flash memory that can be conveniently used for non-volatile file storage. Data from a RAM file can easily be stored in this area. Operating system version 2.16b ensures a more reliable file save operation.

NOTE:
Make sure that all files have been retrieved/downloaded prior to an operating system update. The update will overwrite all programs and files in the unit.