Scroll to the bottom of the TinyBootloader main page and there's a list, with links, of other bootloaders, including ZPL and WLoader, which do not use the UART.
Scroll to the bottom of the TinyBootloader main page and there's a list, with links, of other bootloaders, including ZPL and WLoader, which do not use the UART.
Very early on, Tony Nixon used to have just such a bootloader, RomZap. Not only could it use any pin, it also had an option to invert (or not) the signal, making it ideal for direct connection to the serial port. To my knowledge, development on this stopped a while ago, so I'm not sure about the support for 16F87. In case you are interested, I could mail you a copy, since Tony had kept it free.
Regards,
Anand
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