Hello Ruud, * On Sat, Jun 20, 2015 at 07:53:22PM +0200 Ruud@Baltissen.org wrote: > Seeing the schematic I tend to say that you are right. But that > would mean that I should have had troubles with interchanging flppy > disk. But as said I didn't. As I said, the -03 ROMs and later do not expose this problem, as they use the 9 byte GAP. As I said also, I have never seen a -01 or -02 ROM in the wild. The only problems would be the 1540 and the 2031, which used the 8 byte gap. I have not found my analysis of the format routine yet, but your findings make me believe that my memory did not fool me. I believe I once analysed the 4040 ROMs and found out about this. > And mentioning the 2031, another drive I need to disassemble..... > I should have choosen another hobby :) I could tell you that it is already done and combined with the 1540/1541/1571 sources in my cbmrom git. But, as I know, you do not want to re-use other ones work. In short, the 2031LP and the 1540 are extremely similar: 1. I still have not found any difference in the schematics besides the IEC vs. IEEE interface 2. The ROM is so much identical as it can be, taking into account no. 1. Regards, Spiro. -- Spiro R. Trikaliotis http://www.trikaliotis.net/ Message was sent through the cbm-hackers mailing listReceived on 2015-06-20 21:00:06
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