Hi Chuck, What 3.5" drives have you found that can do 1.6MB mode without major mods?
I'm aware of : Alps DF354N Samsung SFD-321B Sony MPF920-E TEAC FD-235HG TEAC FD-05HG Any others? TIA, m ------------------- From: "Chuck Guzis" <ccl...@sydex.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Sunday, April 03, 2016 2:11 PM Subject: Re: AT&T 3B2 floppy format > Yesterday I was about to suggest that the 300Kbps/300rpm mixup might be > the problem, but I figured that it would surface eventually. > > IMD does have an RPM-checking routine--I use it frequently when > modifying 2.0MB 3.5" drives to masquerade as 1.6MB ones. It ensures me > that the result will behave as intended. > > The difference between 300 and 360 RPM is on the hairy edge of the > capture range of most data separators, so simply reading a floppy is no > guarantee of success when writing one that's been formatted at the > incorrect bit clock/rpm rate. > > But I'm certain that you've been adequately instructed by experience and > will sin no more... :) > > All the best, > Chuck >
