Bootloader for 16f87/88 that doesn't use UART

[victorf57]

Take a look at this code maybe it will help.
http://www.oshonsoft.com/picbootloader.html
victor

[bcd]

Hi Victor,

Fantastic ! That gives me a good starting point. The PC applicatin looks a lot like the PIC_E one.

Looks like I am going to spend Sunday in the shed learning how to bootload !!

With Thanks,
Bill.

[Darrel Taylor]

bcd,

If you're going to start with that bootloader for the 16F877?
There are some significant differences when writing to flash memory on the 16F87/88's.

The 877 allows you to write 1 word at a time. And when you write it, the chip automatically erases the word before writing the new data. This is the main reason why 99% of the free bootloaders use the 16F877. (it's easy)

The 16F87/88's require that you erase memory in blocks of 32-words first, then write the new data in blocks of 4-words. (more difficult)

It's still very doable.
Just thought it might help get you on the right track.
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