Astrobe Forum

Follow-up question: say, I have a module, let's call it LED.mod, in my project directory. The programme compiles and links fine. Now I move LED.mod to a library directory (which is on the list of dirs to search), but (erroneously) leave LED.sym and LED.arm in the project directory. When I simply com...

Is there a possibility to make the Astrobe editor "listen" to changes made to open files made with another editor, or a "reload" function without closing and reloading the file? The keyboard shortcuts cannot be changed, right? Can I prevent the terminal window from scrolling to the bottom whenever ...

And you don't mark the exception handlers in Traps.mod with square brackets because it does not matter, as you never return to the interrupted code anyway? Sorry for all the nagging, I would like to understand all this... In the same vein -- the nagging and trying to understand :| -- another questio...

ad 1.) true, that's a bad idea. It would result in a Hard fault. The ASSERT needs to be in SVCall: PROCEDURE SVCall*(h: PROCEDURE); VAR currentHandler: PROCEDURE; BEGIN ASSERT(h # NIL, 100); sysHandler := h; ... ad 2.) as sysHandler runs as exception handler, it will result in a Hard fault. But that...

When an interrupt handler is invoked any additional registers that need to be saved are automatically saved. Just to be sure: so all exception handlers, not only ISRs (eg. a handler for the SVC call/exception), need to be marked with the square-bracketed integer, like 'PROCEDURE handler[0]', so the...

Two questions: With an interrupt, only R0 to R3 [1] are pushed onto the stack upon entry of the ISR. Does the compiler automatically account for this limitation when compiling ISRs, or is there anything I need to take care of manually? Does all thread mode (ie. not handler) code run privileged? Is t...

Here's a version that works without changing Traps.mod, using the vector swapping technique (relevant excerpt from my Kernel.mod module, leaving out the SysTick business). CONST ... SVC_Instruction = 0DF00H; SVC_Vector = 02CH; VAR ... sysHandler: PROCEDURE; svcTrapAddr: INTEGER; PROCEDURE svcHandler...

I want to use the SVC call/mechanism not only for error handling, but also executing code that is safe from interference by interrupt service routines (ISR), eg. to avoid race conditions. Thusly executed code must be small and fast for the least possible interference with the incoming interrupts. As...

IMO, that would be a great addition to the debugging toolbox. The location of an error is a good start and mostly helpful for modules of your main controller-logic, but for library modules that are used from different locations, to know what calls lead to an error is crucial. I am also confident tha...

If a run-time error occurs, or a user-trap is triggered, is it possible to get (print, or create/retrieve a data structure such as a linked list) the call stack, ie. the chain of procedure calls that resulted in the trap? Thanks.