On 07/04/2018 12:39 AM, dwight via cctalk wrote: > I'm told that the N* controller can write H89 formated disk but the H89 > controller can't do N* format. I could have that backwards but that is what I > recall. One can't do the other. > > The H89 hard sectored controller is single density only, while the newer N* > can do both single and double density, still hard sectored though. There is > always confusion on the N* controllers as to which can do double density. My > research indicates that the MDC-nA are single density only and the MDC-nDA > can do both ( n is a rev. number 1, 2, 3, or 4). > > Dwight > I had two H89s and neitehr coud do NS* format either way. THe controllers are very different. I've seen more of them with softsector boards in them.
Allison > > ________________________________ > From: cctalk <[email protected]> on behalf of Fred Cisin via > cctalk <[email protected]> > Sent: Tuesday, July 3, 2018 11:08:18 AM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Looking for North star software > > On Tue, 3 Jul 2018, dwight via cctalk wrote: >> I'm not as worried about 10 hard secrtored disk. I still have the punch >> I had made for my H89. I can create 10 sector from old 360K disk. > If you have a working H89 (hard sectored), then you should be able to > write a program to run on the H89 to write hard sectored disk images! > Can it do single density 256 byte sectors? or MFM 512 byte sectors? > > .ASM for PCTOFLOP should be available, as a guide to what you need, but > will need modification for the H89 disk controller. > > Most of the NorthStar disk images should be availablem once you've got the > H89 writing disks from them! > > Once you've got the NorthStar booting CP/M plus a copy of PIP, you can > then continue on it. > >
