Hallo Ingo, > EXOS is a kernal-replacement-only speeder, It was my favourit speedloader before JD. > so that address refers to the original 1541 rom. I think it > also works with a Jiffy-1541, but I'm not 100% certain. If that is part of the the code that is uploaded to the drive, I'm quite sure it won't work because $F82B is the second byte of an instruction starting at $F82A. So if Exos indeed relies on this routine, I have a problem as JD doesn't have it. The only solution would be to copy the whole routine from the original 1541 DOS. Lucky for me (EP)ROM space is not a problem :) Now I regret I discarded my own message. I know I mentioned I could gain an extra three seconds. I can use the $F3B1 - Read Header routine to read the sector number And then start reading the data starting with the next sector. In this way I will loose a little bit less then 1/3 of a second but I'll be using routines I'm familiar with. Hallo Patryk, >> No, you weren't ignored, but I cannot use the Warp routines because >> I cannot use the GCRed data. > > I think I would double-check this statement. The Warp routine sends the data directly from the 6522 to the PC. This means it is still GCRed and thus I cannot use it. More interesting would be the Turbo routine if it wasn't slower as what I already got. > I have those rewritten in my copier. Can give you access to my > SVN if you like. Please do. In my last email I was quite enthousiastic about the way Exos decoded the header. But only after sending it I realised that it wouldn't speed up things; as you mentioned before, the GCR decoding is still the routine where most can be gained. I hope you also have the routines to write things to disk again? Some info: I just managed to program my 29C256 again after all the trouble of yesterday. This time I used the Find Sector routine for all tracks and things worked out fine: still 35 seconds. Next thing to try the idea I mentioned above. I'm busy with it but the copying stops in the middle of nowhere W/O any reason (at least to me). -- ___ / __|__ / / |_/ Groetjes, Ruud Baltissen \ \__|_\ \___| http://Ruud.C64.org Message was sent through the cbm-hackers mailing listReceived on 2009-05-25 22:06:10
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