Flash Magic Forum

In-System Programming Support => P89V51Rx2/P89LV51Rx2 => Topic started by: phonoplug on January 24, 2007, 07:52:35 am

Title: Larger bug when re-programming 89V51RD2
Post by: phonoplug on January 24, 2007, 07:52:35 am
Just upgraded to version 3.42. I use the 'Use DTR to control RST' advanced option, and the target board runs on a 16.384MHz crystal. Before I upgraded I was using 3.20 which worked fine.

I have found in the new version a problem with entering ISP mode - there is a delay between release of the RST line and the 'U' character being sent. I used to have T1=100mS and T2=50mS and this worked fine (and as expected) with version 3.20. The time between release of RST and the begining of 'U' appearing was about 70mS. However, with version 3.42 this time, with the same settings of T1 and T2 is around 375mS, meaning the micro has gone off into normal boot mode by then. Setting T2 even to 0 still gives too longer a delay to catch the micro.

Fortunately I have the installer for version 3.20 still so going back to that works fine, but theres ovbiously something wrong with 3.42!
Title: Re: Larger bug when re-programming 89V51RD2
Post by: Andy Ayre on February 09, 2007, 03:02:33 pm
This was broken in version 3.39, but is fixed in version 3.46 - just uploaded. Thanks for letting me know!

Andy