Chris Johnson

I'm trying to build something a bit like http://monome.org/ from scratch (i.e. not using the MIOS system). I'm looking at the 18F4550, but am rather worried by the problems with the chip that stopped the USB PIC module development. I have a question regarding the bug. It appears to be in the EUSART section of the PIC. Does this cause any problems with the USB functionality of the chip, or was it just the MIDI serial side of the USB <-> Serial bridge that had the problem? For my project I'd like to use the CDC firmware for the USB interface, and just connect some buttons and LEDs to other ports of the PIC, without using any serial connections to the PIC (other than the USB). Am I right in thinking that I should not encouter the bug? One further thing - has anyone tried burning an 18F4550 chip with the JDM programmer? I have a JDM already and would ideally like to avoid making another programmer if I can get the JDM to work on the 18F4550. A appreciate this isn't really to do with the MIOS project, but this site is just about the only place where the silicon bug in the 18F4550 is documented at all... Many thanks,