Interesting... According to the readme included in the latest MPLAB 6.30, there is no mention of the 18f1220. But in the 1220 datasheet it says (as it does in all other data sheets, cut-n-paste): "The PICSTART Plus development programmer supports all PICmicro devices with up to 40 pins. Larger pin count devices, such as the PIC16C92X and PIC17C76X, may be supported with an adapter socket." The 1220 is one of the new nanowatt devices though - I couldn't find programming specification on their website for it, the closest is the PIC18FXX20 programming spec, but it only mentions 18F[65, 66, 67,85,86,87]20 chips. The ICD 2 has support for it, though. I suspect that the situation is similar to a previous time that we couldn't get immediate access to a PICSTART firmware that could program all the PICs - the 17C44 is full with 8192 words, and there is no more space for yet another programming algorithm. I think it was 18F chips that we had problems programming, but it was awhile ago now. Whatever it was, they managed to squeeze it in with another release. However, the newest MPLAB has a new menu item - "Download PICSTART OS", which reports when tried "Incompatible PICSTART PLUS for Downloading new OS. The Processor upgrade module is required." leading me to believe that shortly we will be upgrading the 17C44 for a flash chip (18F with 16K words, perhaps?) that can be upgraded on the fly, and will probably go faster since they wouldn't have to trade code space for speed so much anymore. So, ultimately I suspect they will support the picstart as a universal PIC programmer as long as the hardware holds out. We may have to wait a few more months before getting nanowatt device support, but I'm sure those who need it now are well served by the ICD2. -Adam Picdude wrote: >Not sure of the exact pinout change(s), but if it is just a pinout change, why >can't you just adapt the programming wires to the newer pinout? > >Cheers, >-Neil. > > >On Saturday 05 July 2003 13:11, gtyler scribbled: > > >>I have the same problem, could they have done it to force you to buy a new >>programmer? I used a picstart+ until the 18F1220 came along, then I had to >>get an ICD2. >> >>----- Original Message ----- >>From: "Jason Harper" >>To: >>Sent: Saturday, July 05, 2003 3:12 PM >>Subject: [PIC]: Inconsistent pinouts >> >> >>Does anybody have any idea why Microchip scrambled the locations of 8 of >>the I/O pins on the 18F1x20 chips, as compared to every 18-pin PIC >>previously made? This would appear to cause lots of unnecessary pain for >>anyone wanting to migrate an existing design to these chips. >> Jason Harper >> >> > >-- >http://www.piclist.com hint: To leave the PICList >mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.