This is hard disk driver for Atari ST(E) and Falcon machines with built in IDE interface. 
Non-autoboot versions, for load driver from floppy:

It works with DOS (PC) partitioned hard disks and FAT16 BigDOS partitions
up to 2GB. Under Mint may access FAT32 partitions. Needs freeware program BigDOS (included here).
 BigDOS must be run from AUTO folder, while driver itself can be started from desktop too (or from AUTO folder). For Falcon BIGDOS-F is required (not included here).

 Partitions in position on drive up to 128GB are accessible. More can not
because of BigDOS limitations.
   Do not use partitions under 32MB by bigger drives (over ~100MB) - because BigDOS will disable them.
By smaller drives make all partitions under 32MB, and then no need for BigDOS
(use logical unit size of 1024 bytes by format (set)).

Data transfer speed is not big because of required High/Low byte swap (except with twisted cable).
 (different CPU architectures), and is about 350KB/sec. On Falcon about 1400KB/sec.
From version 5 blitter is used to enhance speed. Byte-swap blitter code is made by
Hans Hrrd.
So, on machines with blitter (Mega ST, STE) transfer speed is about 710KB/sec.
On Falcon blitter is not used, since CPU is faster.

For more speed with PC (DOS) partitined disks different interface or cable is required.
Twisted IDE cable - what is actually hardware High/Low swap,  needs special drivers.

TWID_7.PRG is special driver for twisted IDE cable, where bits 0-7 and 8-15 are swapped.
Then no software high-low byte swap is required, and read speed goes up to 1800KB/sec 
when machine has blitter, otherwise speed is about 1300KB/sec. It can access even drives over 128GB.
But not with BigDOS or Mint :-(   .


Option at bottom: "Press key D..X  to swap it with part. C." - it allows user to easy use different (desktop) configurations by setting different partitions as C by driver
installation. D..X - X here is last available partition letter. Original partition C
will be that what key is pressed, and original X will become C. If executing driver
from AUTO folder then desktop and accessories will load from so choosen partition 
(which will be C).


These driver versions are freeware.


P. Putnik, Aug-Sept. 2007, 2008 .


