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DreadStorm
February 23rd, 2012, 08:34 PM
I've seen pictures, so I know they're out there. Individual floppy drives. The only ones I've seen in circulation are those housed in the big expansion chassis.

My question is this:

Is it possible to adapt a floppy drive for use with ye olde TI? Just a single drive, without the monster chassis. I spent about 3 hours on Google tonight looking around, and the closest I got was saying it has been done outside of TI products...just nothing saying how nor what's needed.

Any directions to point to?

Or better...Anyone got a spare (working or not) sidecar floppy drive you're willing to part with?

Chuck(G)
February 23rd, 2012, 09:07 PM
There was a PHP1800 sidecar disk controller that did not require the expansion unit. Here's what's inside (http://www.mainbyte.com/ti99/schematic/disk_controller.jpg). There are also manuals for it on 99er.net.

Given the 1800, it's pretty easy to add a 3.5" drive to it.

DreadStorm
February 23rd, 2012, 10:06 PM
Yeah, I just found a project/instruction page that shows how to upgrade the controller you mentioned to support DS-SD/80-track drives. I saved the schematic, just in case.

curtis
February 24th, 2012, 06:20 AM
If you're interested, I have a PEB that I rescued and would consider parting with for the right price.

It's fully loaded with the RS-232, memory, drive controller, AND PASCAL card.

Shipping will probably be a bit uncomfortable going from Amarillo, TX to you in Greer, SC.

PM me if you're interested.

Curtis

joekster
February 24th, 2012, 07:05 AM
If you want a more modern PEB, I bought one (don't remember the exact name) from ebay. Its a small board with serial,32k expansion and a cf card for floppy emulation. I think they run about $50...

I really liked the idea of storing the floppy images on cf, rather than dealing with a physical drive.

DreadStorm
February 24th, 2012, 12:27 PM
Definitely interested in both. PMs sent.
But I was trying to avoid getting a PEB for the one I use, saving that for the "museum piece" one instead. And as I mentioned in a new post here, I just got the ideal "museum piece" machine just yesterday. Thing's never been used.
The reason I was looking for a sidecar floppy was because I didn't want to have to shell out for two PEB units - but I still need the one. Although a custom little one would be suitable for the one I would use regularly.

Ksarul
February 24th, 2012, 04:27 PM
There are only a few options for adding a floppy drive to a TI:

The PHP1800 sidecar controller with a disk drive attaches to it in an external powered floppy case.
A Percom Data TX99 sidecar controller with integrated floppy drive.
A PEB with Disk Controller Card (there are about 7 different controllers with floppy options).
A CorComp 9900 Micro-Expansion system with a disk drive attached to it in an external powered floppy case.
A Myarc MPES-50 sidecar with two integrated floppy drives.
An Atronic CPS99 Sidecar device with a disk drive attached to it in an external powered floppy case.
A TI HexBus Controller and a 5.25 HexBus floppy drive (extremely difficult option)
A CF7+ or NanoPEB device from Jaime Malilong--these are attached to the side of the console and use a CF card for mass storage.

There are also a couple of Hard Disk options (MFM, SASI, IDE, and SCSI), if you're really into the system.

barryp
March 18th, 2012, 04:49 PM
I've seen pictures, so I know they're out there. Individual floppy drives.

BUT, you need a controller. The drive is easy, any standard single or double density drive, 5" or 3".

The PEB holds a drive (or two) plus several cards but is very heavy so shipping cost is high, often more than the box is worth.

TI software originally came on 5" single-sided single-density diskettes (90KB) but most of the controllers handled double-sided drives with no problem. High-density 1.2MB disks are a problem but 1.44MB disks are fine if you either have a 720KB drive or tape over the HD hole on the disk.

Maize
May 16th, 2012, 05:37 AM
Do any of you know, if one had a PHP1800C disk drive controller, if one could attach one of the somewhat-commonly-available devices that emulate a floppy drive using Compact Flash or SD cards to it and have it work? SD in particular would be extremely handy in terms of transferring files (disk images, etc.) between my Mac and the TI. I'm really trying to avoid buying a PEB, mostly because I don't want the huge box where I plan to set up the TI in the house. It's primarily going to be a nostalgic game machine for my girlfriend, and she'll mostly use cartridges, but I wouldn't mind, if I decided to fiddle with it once in a while, being able to save my work. :)

twolazy
May 16th, 2012, 06:18 PM
Far as I know the ti 99 does not use fat modes, so doubt a floppy emulator work, unless designed for the purpose. :(

Most all the emulators use fat-12. :S

BTW, i am interested in a floppy controller+memory expansion as well. Have a mint 4/a here with 0 software. I have some CoCo stuff if anyone wishes to trade. Wonder if the coco drives would work on a 99er. Bet they would as the connector is just a standard shugart. If it would then I already have 2 360kb (think they are 360kb might be 720kb) drives waiting to attach to a controller . :D

gerrydoire
May 16th, 2012, 06:46 PM
I have a 5 1/4 Drive for the TI, I beleive it requires the exapansion box to work with a TI. Mine is brand new and still in the box.

Maize
May 16th, 2012, 06:49 PM
Far as I know the ti 99 does not use fat modes, so doubt a floppy emulator work, unless designed for the purpose. :(

Most all the emulators use fat-12. :S

BTW, i am interested in a floppy controller+memory expansion as well. Have a mint 4/a here with 0 software. I have some CoCo stuff if anyone wishes to trade. Wonder if the coco drives would work on a 99er. Bet they would as the connector is just a standard shugart. If it would then I already have 2 360kb (think they are 360kb might be 720kb) drives waiting to attach to a controller . :D

After I posted, I found an indication that some of them may actually work. :) So I'm going to experiment with that.

This page (http://hxc2001.free.fr/floppy_drive_emulator/index.html#FILESSUPPORTED) lists TI-99/4A compatability. The notes say "MFM & FM tracks supported." Have no idea what that means. :/ But it's something!

barryp
May 20th, 2012, 02:42 PM
[QUOTE=Maize;225564]The notes say "MFM & FM tracks supported." Have no idea what that means.

FM is single density and MFM is double density. The original TI standard was a 90KB disk and drive which is single-sided, single-density. The PC standard 360KB disk and drive is double-sided, double density.

Floppyemulator
July 10th, 2012, 02:41 PM
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I hope that this product will be useful for some of your cool Vintage Computers. Thanks and Best regards, Ariel/

yell0w_lantern
July 31st, 2012, 09:39 AM
There are only a few options for adding a floppy drive to a TI:

The PHP1800 sidecar controller with a disk drive attaches to it in an external powered floppy case.
A Percom Data TX99 sidecar controller with integrated floppy drive.
A PEB with Disk Controller Card (there are about 7 different controllers with floppy options).
A CorComp 9900 Micro-Expansion system with a disk drive attached to it in an external powered floppy case.
A Myarc MPES-50 sidecar with two integrated floppy drives.
An Atronic CPS99 Sidecar device with a disk drive attached to it in an external powered floppy case.
A TI HexBus Controller and a 5.25 HexBus floppy drive (extremely difficult option)
A CF7+ or NanoPEB device from Jaime Malilong--these are attached to the side of the console and use a CF card for mass storage.

There are also a couple of Hard Disk options (MFM, SASI, IDE, and SCSI), if you're really into the system.
I didn't think that the CF7+ and the NanoPEB were in Production so I've also been looking at the HxC floppy emulator. It seems to be coming down to needing a controller for it though. The one Youtube video I found that showed anything about the setup used the Corcomp 9900 which I don't think is very easy to find.

ProfDrJWM
October 11th, 2013, 08:56 AM
[QUOTE=curtis;213134]If you're interested, I have a PEB that I rescued and would consider parting with for the right price.

It's fully loaded with the RS-232, memory, drive controller, AND PASCAL card.

Shipping will probably be a bit uncomfortable going from Amarillo, TX to you in Greer, SC.

>>>Is this possibly still available? If so, why not ship it to France:

M. le Pr J. W. Montgomery
55, rue de Rountzenheim
67620 Soufflenheim
FRANCE

>>>Let me know how much you want for it. E-mail: 106612.1066@compuserve.com

>>>I should think that the postage would not be atrocious.

barryp
November 16th, 2013, 08:33 AM
I didn't think that the CF7+ and the NanoPEB were in Production

He builds them in his basement or garage then sells them on eBay now and then. They sell out very quickly.

barryp
November 16th, 2013, 08:36 AM
[QUOTE=ProfDrJ

>>>I should think that the postage would not be atrocious.[/QUOTE]

Postage would be far beyond atrocious. (Much, much more than the price of the box.)

barryp
November 16th, 2013, 08:43 AM
Do any of you know, if one had a PHP1800C disk drive controller, if one could attach one of the somewhat-commonly-available devices that emulate a floppy drive

What I've heard of are either VERY expensive or not compatible with the TI disk layout of 256-byte sectors. I do think there is at least one on eBay that works...

barryp
November 16th, 2013, 08:47 AM
BTW, i am interested in a floppy controller+memory expansion as well.

There are quite a few TI users in the Chicago area, recently there was an annual Faire that you just missed, held in the first few days of November. I understand there are often freebies available...