Floppy Disk Drives

The beginnings of a list of floppy drives available for the TOS range.

Atari SF354 External Drive - SS/DD 360KB 3.5" Drive

Atari SF314 External Drive - DS/DD 720KB 3.5" Drive

Atari PC554 External Drive - DS/DD 5.25" Drive - Designed for the Atari PC range, it was also compatible with the ST range with a software modification

ST Xformer Cable - Allows you to connect Atari 8bit Disk Drive to Atari ST

Gt-1000 - Indus - 5.25" Floppy Drive for Atari ST

GTS-100 - Indus - 720KB 3.5" Floppy Drive

Cumana CSA354 - 720KB 3.5" Drive

The external floppy drives are connected to ST via special 14-pin connector:

Pin	Name	Description
1	RD	Read Data
2	SIDE0	Side 0 Select
3	GND	Ground
4	INDEX	Index
5	SEL0	Drive 0 Select
6	SEL1	Drive 1 Select
7	GND	Ground
8	MOTOR	Motor On
9	DIR	Direction In
10	STEP	Step
11	WD	Write Data
12	WG	Write Gate (write enable)
13	TRK00	Track 00
14	WP	Write Protect

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