Hi All, I hope this is the right forum, I have a 68hc11 microcontroller, and im using BR to debug my buggy code (it has the Buffalo monitor) The gist of it is: I load numbers into registers and then jump to a subroutine, i check the numbers before and after the jump, but they have changed- any clues to what is happening? cheers, dt
Is an interrupt occuring?
When you say "registers", do you mean MCU registers or I/O control registers?
Buffalo is not a very good way to debug since it is invasive. You might consider the 9s12 devices at some point because of their superior BDM debugging.
Eric
Hi Eric, Thanks for responding! by registers, I mean MCU registers, Reg X and Reg B. Im using Buffalo, could the buffalo BR command be a cause?- i'm using that to halt things to look at the registers. I thought for a while I might have been using direct addressing by accident instead of load immediate, but the check before the jump subroutine command shows the number I want, but the check immediately after the jump shows a change! It is weird, the code works when loaded into ram, but I needed it put in EEPROM, so I changed address labels around to suit etc.... and partial operation occurs, but not quite what I want, and it seems to be at this jump point, that things are going amiss. cheers,
On Apr 6, 12:23 pm, "Mr Dump" wrote: BWAHHHH!! He he he found it- it's NOT changing the registers at all!!! The same routine is called for earlier in the initialisation setup- so when the break point exited, I was looking at *those* values! It pays to have a nights sleep on the matter! Thanks Eric for your time! [SNIP]
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