Re: Installing an operating system on the 11/83 - update.

Sent from my iPad > On Feb 22, 2022, at 22:59, Ethan Dicks wrote: > > On Tue, Feb 22, 2022 at 10:43 PM Jay Jaeger via cctalk > wrote: >> Writing a 360KB or RX50 diskette with a 1.2MB drive is a path to a lot >> of frustration. Not only do you have to double step the drive (software >>

Re: Installing an operating system on the 11/83 - update.

On Tue, Feb 22, 2022 at 10:43 PM Jay Jaeger via cctalk wrote: > Writing a 360KB or RX50 diskette with a 1.2MB drive is a path to a lot > of frustration. Not only do you have to double step the drive (software > often takes care of that part), but the tracks written will be narrower > than a real

Re: Installing an operating system on the 11/83 - update.

On 2/22/22 19:43, Jay Jaeger via cctalk wrote: > Writing a 360KB or RX50 diskette with a 1.2MB drive is a path to a lot > of frustration.  Not only do you have to double step the drive (software > often takes care of that part), but the tracks written will be narrower > than a real RX50 / 306KB

Re: Installing an operating system on the 11/83 - update.

On Tue, Feb 22, 2022, 8:43 PM Jay Jaeger via cctalk wrote: > On 2/22/2022 6:12 PM, js--- via cctalk wrote: > > > > On 2/22/2022 7:00 PM, Ray Jewhurst wrote: > >> I read that you can indeed use a standard 1.2 Meg drive and that you > >> can also use DSHD 5.25 disks in place of RX50s. Is there any

Re: Installing an operating system on the 11/83 - update.

On 2/22/2022 6:12 PM, js--- via cctalk wrote: On 2/22/2022 7:00 PM, Ray Jewhurst wrote: I read that you can indeed use a standard 1.2 Meg drive and that you can also use DSHD 5.25 disks in place of RX50s. Is there any truth in this? If there is it will be much easier and cheaper to make disks

Re: Installing an operating system on the 11/83 - update.

Corrections: I think that Mike Gingel did both a program on PC for read/write TRS-DOS family, AND did one on TRS-DOS for other formats. I don't remember which one was which, but I think that the one running on TRS80 might be "Hypercross", with "PC Cross Zap"? being the one running on PC?

Re: Installing an operating system on the 11/83 - update.

On Tue, 22 Feb 2022, Bill Gunshannon via cctalk wrote: Hmmm.. I wonder if I could do any of this with my OS9 system running on a Tandy COCO? Lot's of ability to fudge with disk formats and you can't find a controller much older. :-) Makes me wonder about the other old TRS80's. All handle

Re: Installing an operating system on the 11/83 - update.

On 2/22/22 20:08, Paul Koning via cctalk wrote: On Feb 22, 2022, at 7:33 PM, Fred Cisin via cctalk wrote: From the FDC point of view, which doesn't have optical view of the drive and media, the 80 track DD 5.25" looks similar to a "720K 3.5" drive. (80 tracks, 9 sectors per track, 300

Re: Installing an operating system on the 11/83 - update.

> On Feb 22, 2022, at 7:33 PM, Fred Cisin via cctalk > wrote: > > From the FDC point of view, which doesn't have optical view of the drive and > media, the 80 track DD 5.25" looks similar to a "720K 3.5" drive. > (80 tracks, 9 sectors per track, 300 RPM, 250K data transgfer rate) > > On

Re: Installing an operating system on the 11/83 - update.

A little over 40 years ago, while we were still using TRS80's at the college, the purchasing agent was sleeping with a vendor, and got us RoyType HD diskettes, instead of what we asked for (Verbatim Datalife). When used in the TRS80s, it would format and write without showing errors, but

Re: Installing an operating system on the 11/83 - update.

From the FDC point of view, which doesn't have optical view of the drive and media, the 80 track DD 5.25" looks similar to a "720K 3.5" drive. (80 tracks, 9 sectors per track, 300 RPM, 250K data transgfer rate) On SOME PCs, setting the CMOS floppy setting to "720K" may take care of it. On

Re: Installing an operating system on the 11/83 - update.

On 2/22/22 16:12, js--- via cctalk wrote: > As Chuck noted, I'd think you'd want to use 360K media -- not DSHD > diskettes... and ensure that the 1.2MB drive is slowing down to 300RPM > with a data rate of 250KHZ. > > These features will depend on the 1.2MB drive you have, as well as your > FDC

Re: Installing an operating system on the 11/83 - update.

DD 5.25" disks are about 300 Oersted. HD 5.25" disks are about 600 Oersted. If you use HD disks to write DD content, the data fades away real fast. However, on 3.5" disks, the difference is more like 600 Oersted VS 750 Oersted, and you may get away with using the wrong disk. 360K disks are

Re: Installing an operating system on the 11/83 - update.

On 2/22/2022 7:00 PM, Ray Jewhurst wrote: I read that you can indeed use a standard 1.2 Meg drive and that you can also use DSHD 5.25 disks in place of RX50s. Is there any truth in this? If there is it will be much easier and cheaper to make disks for my Rainbow. As Chuck noted, I'd

Re: Installing an operating system on the 11/83 - update.

ne...@ezwind.net > *Subject:* Re: Installing an operating system on the 11/83 - update. > > On Tue, Feb 22, 2022 at 4:36 PM js--- via cctalk > wrote: > > > > > Rod, > > > >Not sure an RX33 (if 1.2MB > > equivalent) would write working RX50 > > 800k

Re: Installing an operating system on the 11/83 - update.

On 2/22/2022 6:42 PM, Warner Losh wrote: On Tue, Feb 22, 2022 at 4:36 PM js--- via cctalk > wrote: Rod, Not sure an RX33 (if 1.2MB equivalent) would write working RX50 800k (double density) disks. Very different drives. The RX-33 is

Re: Installing an operating system on the 11/83 - update.

On 2/22/22 15:33, js--- via cctalk wrote: > > Rod, > >   Not sure an RX33 (if 1.2MB equivalent) would write working RX50 800k > (double density) disks.  Very different drives. I've copied RX50 disks for a customer. 96 tpi 80 cylinder single-sided, 10 x 512 byte sectors. You should be able to

Re: Installing an operating system on the 11/83 - update.

<https://aka.ms/AAb9ysg> From: cctalk on behalf of Warner Losh via cctalk Sent: Tuesday, February 22, 2022 6:42:38 PM To: j...@cimmeri.com ; General Discussion: On-Topic and Off-Topic Posts Cc: gene...@ezwind.net Subject: Re: Installing an operating

Re: Installing an operating system on the 11/83 - update.

On Tue, Feb 22, 2022 at 4:36 PM js--- via cctalk wrote: > > Rod, > >Not sure an RX33 (if 1.2MB > equivalent) would write working RX50 > 800k (double density) disks. Very > different drives. > The RX-33 is the same sort of drive that you had in your PC if you wrote RX-50s with your PC. Back

Re: Installing an operating system on the 11/83 - update.

On 2/22/2022 11:20 AM, Rod Smallwood via cctalk wrote: Hi All I did find some RX50 images of the MicroRSX distribution. So I fired up my DEC Celebris FX. It runs W95 and has a 3.5 inch floppy, a real RX33 5.25 inch drive and a CD-R. Its accessible on my network so getting

Re: Installing an operating system on the 11/83 - update.

Rod, Not sure an RX33 (if 1.2MB equivalent) would write working RX50 800k (double density) disks. Very different drives. I've successfully put an actual RX-50 drive on my PC, and written RX-50 images using PUTR. You might try that route. - John Singleton On 2/22/2022 11:20 AM,

Re: Installing an operating system on the 11/83 - update.

On Tue, Feb 22, 2022 at 3:24 PM Rod Smallwood via cctalk < cctalk@classiccmp.org> wrote: > > On 22/02/2022 16:20, Rod Smallwood via cctalk wrote: > > Hi All > > > > I did find some RX50 images of the MicroRSX distribution. > > > > So I fired up my DEC Celebris FX. It runs W95 and has a

Re: Installing an operating system on the 11/83 - update.

On 22/02/2022 16:20, Rod Smallwood via cctalk wrote: Hi All   I did find some RX50 images of the MicroRSX distribution. So I fired up my DEC Celebris FX. It runs W95 and has a 3.5 inch floppy, a real RX33 5.25 inch drive and a CD-R.    Its accessible on my network so getting

Re: Greasweasel was Re: Installing an operating system on the 11/83 - update.

On 2/22/2022 12:29 PM, Ray Jewhurst via cctalk wrote: I was wondering how well a Greaseweasel would write floppies for my Rainbow. Also, I saw that someone had images for Venix-86 Rainbow and I was wondering if they would be interested in sharing them. Thanks Ray Sent from my Verizon,

Re: Greasweasel was Re: Installing an operating system on the 11/83 - update.

t Outlook for Android<https://aka.ms/AAb9ysg> > > From: cctalk on behalf of Paul Koning via > cctalk > Sent: Tuesday, February 22, 2022 1:17:12 PM > To: Joshua Rice ; cctalk@classiccmp.org < > cctalk@classiccmp.org> > Subject: Re: Inst

Greasweasel was Re: Installing an operating system on the 11/83 - update.

tps://aka.ms/AAb9ysg> From: cctalk on behalf of Paul Koning via cctalk Sent: Tuesday, February 22, 2022 1:17:12 PM To: Joshua Rice ; cctalk@classiccmp.org Subject: Re: Installing an operating system on the 11/83 - update. > On Feb 22, 2022, at 12:27 PM, Joshua

Re: Installing an operating system on the 11/83 - update.

> On Feb 22, 2022, at 12:27 PM, Joshua Rice via cctalk > wrote: > > I have a generic 5.25” (not sure of brand) in my dell GX1 but it writes plain > SSDD floppies in RX50 format no problem. > > The RX33 was a pretty standard PC floppy drive AFAIK, just configured (with > jumpers) to work

Re: Installing an operating system on the 11/83 - update.

I have a generic 5.25” (not sure of brand) in my dell GX1 but it writes plain SSDD floppies in RX50 format no problem. The RX33 was a pretty standard PC floppy drive AFAIK, just configured (with jumpers) to work as an RX33. You may find better milage configuring it as a PC floppy drive, as

Installing an operating system on the 11/83 - update.

Hi All   I did find some RX50 images of the MicroRSX distribution. So I fired up my DEC Celebris FX. It runs W95 and has a 3.5 inch floppy, a real RX33 5.25 inch drive and a CD-R.    Its accessible on my network so getting files onto it is not a problem.     So install putR.com ,