At 17:46 15-03-98 -0500, Matt Bennett wrote:
>I've built my own programmer (a serial programmer for both the EPROM
>and Flash parts) and it programs great.  I'm having problems with the
>"bulk" erasing of the program and data areas.  My first problem is
>ambiguity in the data sheet.  In the data sheet it reads:
>

I have also recently made my own serial programmer for mid-range PICs.
I also encountered the same bulk erase problem with the 16F84/16C84.
Otherwise my programmer works fine.
If anyone knows how to make the bulk erase to work, please tell me too!

I tried the following:
1.      load data all '1's      (000010b, 0b, 11111111111111b, 0b)
2.      bulk erase pgm mem      (001001b)
3.      begin programming       (001000b)
4.      I waited 10ms before doing anything else to it..

But no bulk erase happens...

--Tomi Virtanen
  tjvirtan@cc.helsinki.fi