RTX51 TINY: RELOCATING INTERRUPTS
Information in this article applies to:
How do I relocate the timer interrupt used by RTX51 Tiny?
The interrupt vector for the timer used by RTX51 Tiny is defined in the RTX51TNY.A51 file found in the \c51\rtx_directory.
Open this file with any editor and search for the following:
RSEG ?RTX?BITS ?RTX_TS_DELAY: DBIT 1 ?RTX_TS_REQ: DBIT 1 CSEG AT 0BH JMP TIMERINT ?RTX?CODE SEGMENT CODE
Change the CSEG AT 0BH statement to specify the new address for the interrupt 1. If you relocate your interrupt vectors to 04000H, you should change the 0BH value to 0400BH as follows:
CSEG AT 0400BH JMP TIMERINT
Then, you'll have to rebuild RTX51 Tiny and make sure the new library that is create gets copied into the c51\lib directory. You may use the GENRTX.BAT batch file to do that:
REM This file generates the RTX51 TINY LIBRARY ..\bin\a51 right.a51 ..\bin\a51 vers.a51 ..\bin\a51 rtx51tny.a51 debug ..\bin\a51 conf_tny.a51 ..\bin\del rtx51tny.lib ..\bin\lib51 create rtx51tny.lib ..\bin\lib51 add right.obj,vers.obj,rtx51tny.obj,conf_tny.obj to rtx51tny.lib copy rtx51tny.lib ..\lib
Or you can create a project file. Be sure you add the following files to the RTX51TNY project: RIGHT.A51, VERS.A51, RTX51TNY.A51, and CONF_TNY.A51.
The following Discussion Forum threads may provide information related to this topic.
Last Reviewed: Monday, December 18, 2000
of your data.