It turned out, that this chips revision is not affected by the infamous EUSART bug anymore
Especially for MIDIbox SEQ users this means, that the MBHP_IIC_MIDI module is not required as hardware workaround anymore. However, adding up to 4 additional MIDI Outs to MBSEQ is still useful for reduced latency (you still won't find any commercial HW based MIDI sequencer with 5 independent MIDI outputs! )
This also means, that existing MIDIbox applications could be enhanced by new features in future; thanks to the additional memory this opens a lot of new possibilities for just US $1 more!
- MIDIbox SID V2: still needs a PIC18F4685 because of the CAN interface and bigger flash memory (96k), but less RAM as the PIC18F4620. PIC18F4685 is not fully SW compatible to PIC18F452, therefore other applications could crash
- MIDIbox FM: MBFM V2 is planned for far future (probably not this year). CAN support for linking MBFM with "slaves", or controlling MBFM from MBSID control surface can be expected. MBFM V1 firmware is running fine on PIC18F4685
- all other MIDIbox firmwares are compatible to PIC18F452 and PIC18F4620. The usage of PIC18F4620 is recommented if you don't want to miss new features.
Best Regards, Thorsten.
P.S.: there is a new Wiki page which documents the obsolete HW workaround for PIC18F4620, just for the case that you bought this chip before 2007, or got it from an "old stock". However, you can decide by yourself, if buying a new one (e.g. from SmashTV) is easier than building a MBHP_IIC_MIDI module.