Re: [M100] question regarding floppy disks.
In article , Stephen Adolph wrote: > I'll start by saying this isn't an M100 or TPDD discussion, but just > looking to understand something. > I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a > standard PC drive and it is working well. > Does anyone know what's going on? The media itself in a 1.44M disk is different, "denser" in some way. It needs a stronger magnetic field for it to be written reliably. Even with a 1.44M drive, writing at Double Density rather than High Density just isn't going to be reliable. It can be done, yes, tape over the HD hole, but the lifetime of the write will be from hours to weeks. And yes, I found this out the hard way... :-( > thx > Steve -- Willard Goosey goo...@sdc.org Socorro, New Mexico, USA I search my heart and find Cimmeria, land of Darkness and the Night. --Robert E. Howard
Re: [M100] question regarding floppy disks.
The controller/computer probably can't handle the higher data rate of the HD format (twice the DD rate). - Original Message - From: Stephen Adolph To: m...@bitchin100.com Sent: Sunday, March 24, 2019 9:32 PM Subject: Re: [M100] question regarding floppy disks. interestingly, Yes, if I take an HD disk, and tape over the hole to make it appear to be a DD disk, then it works. But why? the floppy is capable of both formats... On Sun, Mar 24, 2019 at 7:39 PM Mike Stein wrote: Have you tried closing the HD sense hole with a piece of tape or similar? - Original Message - From: Stephen Adolph To: m...@bitchin100.com Sent: Sunday, March 24, 2019 6:08 PM Subject: Re: [M100] question regarding floppy disks. the Coco is using it's standard controller When issuing the DSKINI 0 command the coco tries to format for 180kB. The combination of (Coco, std controller, PC 1.44MB drive + a 720kB dd floppy) works whereas (Coco, std controller, PC 1.44MB drive + a 1.44MBB hd floppy) does not work this is something I don't understand! On Sun, Mar 24, 2019 at 5:42 PM Gregory McGill wrote: likely the floppy controller doesn't support 80 tracks or high density.. most of the controllers of the era are ds/sd 40 track or dsdd 40 track.. are you able to format 720k? ds/dd 80 track? Greg On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph wrote: I'll start by saying this isn't an M100 or TPDD discussion, but just looking to understand something. I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a standard PC drive and it is working well. Seems though that I cannot use 1.44 MB floppies in that drive. They don't seem to want to format. I really don't understand where the problem could be. - the drive and the floppy are compatible - the disk is known good and formats at 1.44MB in a PC - if it can support 135 TPI, why can't it support 35 TPI? Does anyone know what's going on? thx Steve
Re: [M100] REX: Downloading OPTROM images
You should use LaddieAlpha. I built it. That's the right place. It's safe. I don't know anything about Win7 Smart Screen. I assume it alerts for any executable program. -- John. On Sun, Mar 24, 2019 at 7:39 PM Peter Noeth wrote: > Group, > > I purchased a REX at Tandy Assembly 2018, but am just now getting around > to testing it with my T102 Dual ROM/128KB RAM Memory System. > > The REX Wiki instructions tell of needing a TPDD PC emulator (I have no > TPDD device) but it does not indicate what program to use, or where to > download it. I believe that either LaddieCon or LaddieAlpha is what I need. > But after searching for them, I found a download link on the LaddieCon Wiki > (on http://bitchin100.com/wiki/index.php?title=LaddieCon) that when the > programs download, the Win7 Smart Screen Filter reports them as unsafe. > > Is this the correct place to download the files? If so, are they really > unsafe? > > Regards, > > Peter >
Re: [M100] REX: Downloading OPTROM images
there's also mcomm for windows http://www.club100.org/memfiles/index.php?direction===Kurt%20McCullum; also likely a false positive on that filter.. Greg On Sun, Mar 24, 2019 at 7:39 PM Peter Noeth wrote: > Group, > > I purchased a REX at Tandy Assembly 2018, but am just now getting around > to testing it with my T102 Dual ROM/128KB RAM Memory System. > > The REX Wiki instructions tell of needing a TPDD PC emulator (I have no > TPDD device) but it does not indicate what program to use, or where to > download it. I believe that either LaddieCon or LaddieAlpha is what I need. > But after searching for them, I found a download link on the LaddieCon Wiki > (on http://bitchin100.com/wiki/index.php?title=LaddieCon) that when the > programs download, the Win7 Smart Screen Filter reports them as unsafe. > > Is this the correct place to download the files? If so, are they really > unsafe? > > Regards, > > Peter >
Re: [M100] question regarding floppy disks.
the controller and fat probably are not.. they were designed before that disk size was available.. On Sun, Mar 24, 2019 at 6:32 PM Stephen Adolph wrote: > interestingly, > > Yes, if I take an HD disk, and tape over the hole to make it appear to be > a DD disk, then it works. > > But why? > > the floppy is capable of both formats... > > On Sun, Mar 24, 2019 at 7:39 PM Mike Stein wrote: > >> Have you tried closing the HD sense hole with a piece of tape or similar? >> >> - Original Message - >> *From:* Stephen Adolph >> *To:* m...@bitchin100.com >> *Sent:* Sunday, March 24, 2019 6:08 PM >> *Subject:* Re: [M100] question regarding floppy disks. >> >> the Coco is using it's standard controller >> >> When issuing the DSKINI 0 command the coco tries to format for 180kB. >> >> The combination of >> (Coco, std controller, PC 1.44MB drive + a 720kB dd floppy) works >> >> whereas >> (Coco, std controller, PC 1.44MB drive + a 1.44MBB hd floppy) does not >> work >> >> this is something I don't understand! >> >> >> >> On Sun, Mar 24, 2019 at 5:42 PM Gregory McGill >> wrote: >> >>> likely the floppy controller doesn't support 80 tracks or high >>> density.. most of the controllers of the era are ds/sd 40 track or dsdd 40 >>> track.. are you able to format 720k? ds/dd 80 track? >>> >>> Greg >>> >>> On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph >>> wrote: >>> I'll start by saying this isn't an M100 or TPDD discussion, but just looking to understand something. I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a standard PC drive and it is working well. Seems though that I cannot use 1.44 MB floppies in that drive. They don't seem to want to format. I really don't understand where the problem could be. - the drive and the floppy are compatible - the disk is known good and formats at 1.44MB in a PC - if it can support 135 TPI, why can't it support 35 TPI? Does anyone know what's going on? thx Steve >>>
[M100] REX: Downloading OPTROM images
Group, I purchased a REX at Tandy Assembly 2018, but am just now getting around to testing it with my T102 Dual ROM/128KB RAM Memory System. The REX Wiki instructions tell of needing a TPDD PC emulator (I have no TPDD device) but it does not indicate what program to use, or where to download it. I believe that either LaddieCon or LaddieAlpha is what I need. But after searching for them, I found a download link on the LaddieCon Wiki (on http://bitchin100.com/wiki/index.php?title=LaddieCon) that when the programs download, the Win7 Smart Screen Filter reports them as unsafe. Is this the correct place to download the files? If so, are they really unsafe? Regards, Peter
Re: [M100] question regarding floppy disks.
interestingly, Yes, if I take an HD disk, and tape over the hole to make it appear to be a DD disk, then it works. But why? the floppy is capable of both formats... On Sun, Mar 24, 2019 at 7:39 PM Mike Stein wrote: > Have you tried closing the HD sense hole with a piece of tape or similar? > > - Original Message - > *From:* Stephen Adolph > *To:* m...@bitchin100.com > *Sent:* Sunday, March 24, 2019 6:08 PM > *Subject:* Re: [M100] question regarding floppy disks. > > the Coco is using it's standard controller > > When issuing the DSKINI 0 command the coco tries to format for 180kB. > > The combination of > (Coco, std controller, PC 1.44MB drive + a 720kB dd floppy) works > > whereas > (Coco, std controller, PC 1.44MB drive + a 1.44MBB hd floppy) does not work > > this is something I don't understand! > > > > On Sun, Mar 24, 2019 at 5:42 PM Gregory McGill > wrote: > >> likely the floppy controller doesn't support 80 tracks or high density.. >> most of the controllers of the era are ds/sd 40 track or dsdd 40 track.. >> are you able to format 720k? ds/dd 80 track? >> >> Greg >> >> On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph >> wrote: >> >>> I'll start by saying this isn't an M100 or TPDD discussion, but just >>> looking to understand something. >>> >>> I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a >>> standard PC drive and it is working well. >>> >>> Seems though that I cannot use 1.44 MB floppies in that drive. They >>> don't seem to want to format. >>> >>> I really don't understand where the problem could be. >>> - the drive and the floppy are compatible >>> - the disk is known good and formats at 1.44MB in a PC >>> - if it can support 135 TPI, why can't it support 35 TPI? >>> >>> Does anyone know what's going on? >>> >>> thx >>> Steve >>> >>
Re: [M100] question regarding floppy disks.
Have you tried closing the HD sense hole with a piece of tape or similar? - Original Message - From: Stephen Adolph To: m...@bitchin100.com Sent: Sunday, March 24, 2019 6:08 PM Subject: Re: [M100] question regarding floppy disks. the Coco is using it's standard controller When issuing the DSKINI 0 command the coco tries to format for 180kB. The combination of (Coco, std controller, PC 1.44MB drive + a 720kB dd floppy) works whereas (Coco, std controller, PC 1.44MB drive + a 1.44MBB hd floppy) does not work this is something I don't understand! On Sun, Mar 24, 2019 at 5:42 PM Gregory McGill wrote: likely the floppy controller doesn't support 80 tracks or high density.. most of the controllers of the era are ds/sd 40 track or dsdd 40 track.. are you able to format 720k? ds/dd 80 track? Greg On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph wrote: I'll start by saying this isn't an M100 or TPDD discussion, but just looking to understand something. I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a standard PC drive and it is working well. Seems though that I cannot use 1.44 MB floppies in that drive. They don't seem to want to format. I really don't understand where the problem could be. - the drive and the floppy are compatible - the disk is known good and formats at 1.44MB in a PC - if it can support 135 TPI, why can't it support 35 TPI? Does anyone know what's going on? thx Steve
Re: [M100] question regarding floppy disks.
the Coco is using it's standard controller When issuing the DSKINI 0 command the coco tries to format for 180kB. The combination of (Coco, std controller, PC 1.44MB drive + a 720kB dd floppy) works whereas (Coco, std controller, PC 1.44MB drive + a 1.44MBB hd floppy) does not work this is something I don't understand! On Sun, Mar 24, 2019 at 5:42 PM Gregory McGill wrote: > likely the floppy controller doesn't support 80 tracks or high density.. > most of the controllers of the era are ds/sd 40 track or dsdd 40 track.. > are you able to format 720k? ds/dd 80 track? > > Greg > > On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph > wrote: > >> I'll start by saying this isn't an M100 or TPDD discussion, but just >> looking to understand something. >> >> I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a >> standard PC drive and it is working well. >> >> Seems though that I cannot use 1.44 MB floppies in that drive. They don't >> seem to want to format. >> >> I really don't understand where the problem could be. >> - the drive and the floppy are compatible >> - the disk is known good and formats at 1.44MB in a PC >> - if it can support 135 TPI, why can't it support 35 TPI? >> >> Does anyone know what's going on? >> >> thx >> Steve >> >
Re: [M100] question regarding floppy disks.
likely the floppy controller doesn't support 80 tracks or high density.. most of the controllers of the era are ds/sd 40 track or dsdd 40 track.. are you able to format 720k? ds/dd 80 track? Greg On Sun, Mar 24, 2019 at 2:38 PM Stephen Adolph wrote: > I'll start by saying this isn't an M100 or TPDD discussion, but just > looking to understand something. > > I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a > standard PC drive and it is working well. > > Seems though that I cannot use 1.44 MB floppies in that drive. They don't > seem to want to format. > > I really don't understand where the problem could be. > - the drive and the floppy are compatible > - the disk is known good and formats at 1.44MB in a PC > - if it can support 135 TPI, why can't it support 35 TPI? > > Does anyone know what's going on? > > thx > Steve >
[M100] question regarding floppy disks.
I'll start by saying this isn't an M100 or TPDD discussion, but just looking to understand something. I have a Tandy Coco3 with a 3.5 inch floppy drive. The drive is a standard PC drive and it is working well. Seems though that I cannot use 1.44 MB floppies in that drive. They don't seem to want to format. I really don't understand where the problem could be. - the drive and the floppy are compatible - the disk is known good and formats at 1.44MB in a PC - if it can support 135 TPI, why can't it support 35 TPI? Does anyone know what's going on? thx Steve
