Hello Martin, Hoffmann-Vetter, Martin schrieb: > Hello, > >> To me at least the following part numbers of certain FDC ROM versions >> and revisions are known: >> >> CBM code MOS code drive location DOS version references avail >> ------------------------------------------------------------------------ >> 901466-01 >> 901466-02 6530-028 2040 UK3 DOS 1.0 2,5,10 > > I've seen only the 091466-02 in the old 2040/3040 disk drives with dos 1. At > http://www.6502.org/users/andre/petindex/drives/roms/index.html andre write > about the first useable dos is 1.2. So i think the 901466-02 must be the dos > 1.2. is that correct? What's about the 601466-01? Is that the dos 1.0? Did > anyone have seen it? > > At the andres website there is the disassembly list of a dos1 fdc, so i've > assembled it to an binary. Is that the 901466-02 or 901466-01? In a Forum-64.de thread it was suspected that the RRIOT number 091466-01 would belong to the 2020 disk drive. But the poster (is this you, "HofMar", as well as the author of reference [10]?) also mentions that he did not see such a 2020 on his own ever. http://www.forum64.de/wbb3/board314-au-erhalb-des-c64/board13-sonstige-commodore/board16-cbm-rechner/30941-cbm-3040-rom/index2.html#post348623 I don't want to open up other such speculations but I would expect that both chips (-01 and -02) are the same DOS version, but different revisions. Basically both being DOS 1.0, but the -02 with a bugfix. > At home i > have a 901466-02 chip, but that can't be read out in dos1. This is interesting. Once I read a posting from Anders Carlsson over here where he also told that DOS1 cannot be read out with the well known method from William/Olaf/Marko. Do you know why this is so? Does this unability belong to executing job codes (let the DC execute a memory page copy routine)? Or has it something to do with the BC? I would like to try to find a solution for this within my version of the ROM copy tool. > I've build an > adapter to read it as an eprom, but i forgot to clock phi2. So i try it at a > later time. Or has anyone readout the 901466-02 or -01? That would be really great and I don't think that evereone else did it yet. The Zimmer's archive doesn't it now as well as other places. I'm willing to extend and/or fix my dumping tool to your local needs (to make extracting feasible, not fulfilling all your wishes ;-) as long as there is a chance to get a copy of the extracted image file. Womo -- ------ to obtain more infos about me, look up the page ------ ------ http://www.wmsr.de | wm (at) wmsr (dot) de ------ Message was sent through the cbm-hackers mailing listReceived on 2011-08-14 21:00:31
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