| ??? 06/21/09 17:21 Read: times |
#166311 - apply proper reset Responding to: ???'s previous message |
I finally got it! After two days..
MOV R1,0 should be MOV R1,#0! I've copied those lines from a program I am using for 10 months, and this is the first time I've seen the error... The reason it worked from FLIP is that BOOT ROM has left R1 at a fixed state (ie. a value from 0 to FF, but always the same). I haven't read anywhere, but I bet that the memory 0-7F is undefined after power-up, right? The time it took me to remove the programming cable was enough for CPU to 'forget' the memory contents below SFRs. ------------------- The RES pin is still floating, and it works. Does anyone have experience with ED2 regarding brown-outs, etc? Should I implement a reset IC or is internal circuit sufficient? The ED2 should work up to 60MHz. I've programmed it with FLIP (all 64k, several times) at 48MHz. Does PSEN have internall pull-up? |
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