> On 2018-11-09, at 10:05, Francesco Messineo <francesco.messineo@gmail.com> wrote: > > 1) yes, mostly there're three revisions if we exclude the slightly > modified ones in the SX64, PET64, different keyboard models etc... > this would be 901227-01 and yes, probably only present in 326298 PCBs > and in the very early ones. I've never seen one in real life. > 2) The second revision would be 901227-02 and that, in my experience, > is present only in the 1982-1983 period PCBs. All 901227-02 I've seen > have 83xx date codes anyway. > 3) The third revision would be 901227-03 and it was introduced > somewhere between 1983 and 1984, as all 1984 and later C64 that I've > seen have the -03. > 4) The C64C just "condensed" basic and kernel ROMs into one single > 16Kbyte ROM instead of the 2 x 8Kbytes of the previous PCB revisions. > It still uses the 901227-03 image, even if obviously the part number > of this new ROM changed. So we can't really speak about a "revision" > here. > > What do you think? You are very much right. -- SD! - http://e4aws.silverdr.com/Received on 2018-11-09 12:00:03
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