Quote:
Originally Posted by Karen O
I've got one more trick to try - I've widened the margins for NENIN release during the active display region. This will mean the SC/MP running a bit slower but worth it if it works.
I'm really struggling to understand how the PIC VDU can alter memory contents. It has to be something to do with abortive write cycles...?
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Well I put that on a chip and it performs as well as the others but, MINEFIELD still corrupts sorry - I am unable to do much more tonight now but, I will like Sirius take a closer look at relative timings tomorrow after work.
I do not think it is the VDU doing the write. The level of corruption is definitely proportional to the number and type of writes in a program - the writes are related in place to the original ST statements which is why I am supporting the corruption of the address bus while NWDS is still low and maybe _CS for the RAMS is changing to the new address - meanwhile the SC/MP is merrily retrying its write now it has been allowed access.