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Date:         Thu, 29 Jan 2004 09:01:26 +0100
Reply-To:     pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
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From:         Wouter van Ooijen <wouter@VOTI.NL>
Organization: Van Ooijen Technische Informatica
Subject: Re: [PIC:] WLoader bootloader for 16F87XA
To:           PICLIST@MITVMA.MIT.EDU
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> I see. Should be a simple change. I wonder if for the 87XA
> bootloader if it
> should simply ignore programming commands (L commands) unless
> it's a 11 in
> the address. So for 00, 01, 10 it simply loads the location,
> but for 11 it
> loads the location and does the program. Then the protocol
> works unchanged
> from the host side.

Nope. Consider a hex file with locations 0,4,5,... (which is not
unlilkely). The old (877) protocol would simply send these addresses.
The new protocol (877A) must at least send address 3 too, otherwise
address 0 will never be written.

Wouter van Ooijen

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