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Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

3277.0. "1.2mb 5.25" floppy info???" by CGOWGS::OAKLEY (What am I doing here...) Wed Jan 03 1990 03:28

    
    After spending a long time looking through the notes unsuccessfully for
    a piece of information perhaps somebody could help me out.
    
    Some months ago a discussion was underway about adding a 1.2mb 5.25"
    disk to the Amiga.  Somebody pointed out that several PC type drives do
    not offer all of the necessary signals for the Amiga.
     
    I have aquired a TEAC FD-55GFR 1.2mb 5.25" drive and would like to use
    it.  I have a copy of the Take5 interface schematic.  I also have a CBM
    5.25" drive which I plan to hack for the new floppy drive.
    
    If somebody has the details about the drive option jumpers I would
    appreciate this information as well.
    
    Thanks for any help or pointers anybody can give.
    
    wayne oakley

T.R	Title	User	Personal Name	Date	Lines
3277.1	No HD, but otherwise you're in luck...	FROCKY::BALZER	Christian Balzer DTN:785-1029	`Wed Jan 03 1990 06:44`	16
	A friend of mine uses this drive along with Take5 for quite a while now. In fact, I just called him (and woke him up). This drive does feature a diskchange signal, so you won't have to hack one yourself. He couldn't remember the pin or the jumper settings, so I will enter these when he calls me in the afternoon. Once again, HighDensity type floppy drives, ie. the 1.2MB or 1.44MB variety are NOT supported/operational on the Amiga. The Agnus, which does the MFM de/en/coding, wasn't build that way. You'll have to set the jumper on the TEAC to DD mode and get an 880KB 5.25" disk drive. Regards, <CB<
3277.2	looking good	CGOFS::OAKLEY	BCNU2	`Thu Jan 04 1990 03:51`	6
	Thanks for working on this for me. Even 880kb is better than 440k. I'll be looking for your update. wayne
3277.3		FROCKY::BALZER	Christian Balzer DTN:785-1029	`Thu Jan 04 1990 11:51`	12
	Wayne, You'll have to put the Ready jumper ON, that is connect the two pins. At the closeby DC2 jumper you should be able to recieve the Diskchange signal. By default the drive should be in the DoubleDensity mode and not HD, so that should be it... Regards, <CB>
3277.4	Maybe there is one	DPDMAI::ANDERSONA	The Alan in Tulsa not Atlanta	`Tue Jan 23 1990 02:21`	7
	Somebody might have found a way to get 1.2 MB 5.25 inch floppies. In the February issue of Amiga World page 20 there is an ad for the CSI 3300 Mega Drive for $249.00 that works off of the Amiga port or the bridge board. But it is not clear if if can reach 1.2 MB on the Amiga or just the bridge board or both. Alan
3277.5		TRUCKS::CHANT	Something different	`Tue Jan 23 1990 08:59`	7
	> Somebody might have found a way to get 1.2 MB 5.25 inch floppies. As they say "The Amiga has it now", I've got a bridgeboard with a 51/2 drive that handles 1.2 Mb disks quite happily. I havn't tried it on the amiga. Adrian
3277.6	Techway drive ??	NWGEDU::RAIJMAKERS	You trace 'm, I make 'm	`Thu Sep 05 1991 11:45`	35
	Hello, I got hold of a Techway 8W340P (5.25" External Drive 1.2Mb/360KB self-powered) and want to use it as an 880K Amiga drive. I don't want/need to be able to read MS-DOS flops, just the Amiga ones! It comes with a 37 pin connector with the following signals: 1 +12v 2 non-contact 3 reduce write current 4 +5v 5 non-contact 6 index 7 motor on 3 8 drive select 4 9 drive select 3 10 motor on 4 11 direction 12 step 13 write data 14 write gate 15 track 0 16 write protect 17 read data 18 head select 19 disk change 20-37 ground Do I need the Take-5 interface, I've been reading about (if so, where can I find a .six or .ps version) or is there an easier solution. Thanks in advance, Harrie R.