1541 index hole sensor?
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From: RajW on 15 Oct 2006 09:10 Crazy question... what use would there be by adding an index hole sensor to a 1541? Would I gain some extra functionality? /*Raj*/
From: Jerry Kurtz on 15 Oct 2006 10:50 RajW wrote: > Crazy question... what use would there be by adding an index hole > sensor to a 1541? Would I gain some extra functionality? > > /*Raj*/ Index holes are used to align the tracks. Copy protections such as RapidLok depend on perfect track alignment, and since the 1541 has the physical limitation of not having an index hole sensor, its next to impossible for a stock 1541 to write all the tracks out perfectly aligned.
From: larry on 15 Oct 2006 19:57 Jerry Kurtz wrote: > RajW wrote: > > Crazy question... what use would there be by adding an index hole > > sensor to a 1541? Would I gain some extra functionality? > > > > /*Raj*/ > > Index holes are used to align the tracks. Copy protections such as > RapidLok depend on perfect track alignment, and since the 1541 has the > physical limitation of not having an index hole sensor, its next to > impossible for a stock 1541 to write all the tracks out perfectly > aligned. But doesn't the 1571 have an index hole sensor for MFM/CP/M comaptibility? Larry
From: RajW on 15 Oct 2006 20:26 On 15 Oct 2006 16:57:36 -0700, larry(a)portcommodore.com wrote: >But doesn't the 1571 have an index hole sensor for MFM/CP/M >comaptibility? Yes. The 1571 and I think the 1541-II both have an index hole sensor. Does any copy software actually use the sensor or does the hardware do all the work? Also does the 1541 ROM know how to use the index sensor? /*Raj*/
From: BlackJack on 16 Oct 2006 05:14 On Sun, 15 Oct 2006 20:26:52 -0400, RajW wrote: > Yes. The 1571 and I think the 1541-II both have an index hole sensor. The 1541-? does not have an index hole sensor. Ciao, Marc 'BlackJack' Rintsch
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