so indeed the programmer changed something. Here I attached comparison of content of HEX file and what I read from the PIC. read from PIC: https://i.imgur.com/WcFvKi1.png read from HEX file:...
the value is 3F, here i attached a screenshot 66074
I take it that your programmer did not modify location 03ffh, and did program the configuration fuses as the source shows: __CONFIG _MCLRE_OFF & _CP_OFF & _WDT_OFF &...
There was a shift in the early to mid 90s of barrel connectors going from center negative to center positive, where most devices before that time had center negative and most devices after had center...
Ah, yes, enlightening. So it's actually a multiplexed data/address bus and one can *only* assume the address is valid while /ADS is active.
so indeed the programmer changed something. Here...
so indeed the programmer changed something. Here I attached comparison of content of HEX file and what I read from the PIC.
soon668 Today, 07:16 PMread from PIC:
https://i.imgur.com/WcFvKi1.png
read from HEX file:...