<s>
Happy	B-Device
drives	I-Device
are	O
series	O
of	O
disk	B-Device
drive	I-Device
enhancements	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
and	O
Atari	B-Device
ST	I-Device
computer	O
families	O
produced	O
by	O
a	O
small	O
company	O
Happy	O
Computers	O
.	O
</s>
<s>
Happy	O
Computers	O
is	O
most	O
noted	O
for	O
the	O
add-in	O
boards	O
for	O
the	O
Atari	O
810	O
and	O
Atari	O
1050	O
disk	B-Device
drives	I-Device
,	O
which	O
achieved	O
a	O
tremendous	O
speed	O
improvement	O
for	O
reading	O
and	O
writing	O
,	O
and	O
for	O
the	O
ability	O
to	O
"	O
back	O
up	O
"	O
floppies	O
.	O
</s>
<s>
By	O
1986	O
software	O
companies	O
began	O
producing	O
fewer	O
titles	O
for	O
the	O
Atari	O
than	O
for	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
or	O
Commodore	O
64	O
.	O
</s>
<s>
This	O
consisted	O
of	O
a	O
few	O
extra	O
logic	O
chips	O
,	O
a	O
different	O
EPROM	B-General_Concept
and	O
point	O
to	O
point	O
wiring	O
.	O
</s>
<s>
He	O
found	O
that	O
booting	O
time	O
decreased	O
to	O
11	O
seconds	O
from	O
14-18	O
,	O
formatting	O
time	O
decreased	O
to	O
25	O
seconds	O
from	O
38	O
,	O
and	O
drives	O
would	O
last	O
longer	O
because	O
of	O
more	O
efficient	O
disk	B-Device
access	O
.	O
</s>
<s>
Moriarty	O
's	O
tests	O
confirmed	O
the	O
company	O
's	O
claim	O
that	O
the	O
board	O
and	O
accompanying	O
Happy	O
Backup	O
software	O
could	O
duplicate	O
any	O
disk	B-Device
readable	O
by	O
the	O
Atari	O
810	O
drive	O
.	O
</s>
<s>
He	O
wrote	O
that	O
the	O
810	O
Enhancement	O
's	O
$250	O
cost	O
would	O
probably	O
be	O
more	O
useful	O
as	O
part	O
of	O
the	O
purchase	O
price	O
of	O
a	O
second	O
disk	B-Device
drive	I-Device
,	O
but	O
those	O
with	O
two	O
drives	O
"	O
would	O
find	O
the	O
high	O
speed	O
and	O
special	O
capabilities	O
of	O
a	O
Happy	O
drive	O
to	O
be	O
a	O
worthwhile	O
investment	O
"	O
and	O
"	O
a	O
pleasure	O
to	O
use	O
"	O
.	O
</s>
<s>
Atari	O
released	O
the	O
more	O
reliable	O
,	O
enhanced	O
density	O
(	O
130	O
KB	O
)	O
1050	O
drive	O
with	O
the	O
introduction	O
of	O
the	O
Atari	O
1200XL	B-Device
.	O
</s>
<s>
The	O
1050	O
Controller	O
was	O
a	O
small	O
board	O
that	O
was	O
installed	O
inside	O
the	O
1050	O
Happy	O
drive	O
that	O
had	O
2	O
switches	O
and	O
an	O
led	O
that	O
allowed	O
enabling	O
or	O
disabling	O
disk	B-Device
write-protect	O
to	O
override	O
the	O
notch	O
in	O
the	O
disk	B-Device
.	O
</s>
<s>
It	O
allowed	O
transferring	O
files	O
back	O
and	O
forth	O
between	O
an	O
Atari	O
and	O
an	O
IBM	O
disk	B-Device
using	O
a	O
Happy	O
enhanced	O
1050	O
drive	O
.	O
</s>
<s>
Because	O
the	O
1050	O
was	O
a	O
single	O
sided	O
drive	O
with	O
only	O
one	O
head	O
,	O
the	O
disk	B-Device
had	O
to	O
be	O
formatted	O
as	O
SS	O
(	O
180K	O
)	O
.	O
</s>
<s>
The	O
IBM	O
disk	B-Device
could	O
even	O
be	O
formatted	O
on	O
the	O
1050	O
drive	O
.	O
</s>
<s>
The	O
Discovery	O
Cartridge	O
was	O
a	O
device	O
that	O
plugged	O
into	O
the	O
cartridge	O
slot	O
of	O
the	O
Atari	B-Device
ST	I-Device
Computer	O
.	O
</s>
<s>
There	O
was	O
also	O
a	O
battery	O
backed	O
up	O
Time	O
of	O
Day	O
clock	O
option	O
in	O
the	O
Discovery	O
Cartridge	O
,	O
a	O
significant	O
oversight	O
the	O
Atari	B-Device
ST	I-Device
lacked	O
in	O
the	O
stock	O
configuration	O
.	O
</s>
<s>
The	O
power	O
of	O
the	O
"	O
HART	O
"	O
chip	O
(	O
Happy	O
Atari	O
Rotating	O
Thing	O
)	O
,	O
designed	O
by	O
Richard	O
Adams	O
,	O
allowed	O
standard	O
Atari	O
drives	O
to	O
read	O
the	O
unusual	O
Macintosh	O
variable	O
speed	O
disks	B-Device
without	O
needing	O
a	O
variable	O
speed	O
drive	O
.	O
</s>
<s>
The	O
disks	B-Device
were	O
then	O
re-written	O
in	O
a	O
standard	O
"	O
constant	O
speed	O
"	O
3.5inch	O
compatible	O
format	O
called	O
Magic	O
format	O
.	O
</s>
<s>
This	O
allowed	O
using	O
the	O
various	O
Mac	O
emulator	O
products	O
that	O
would	O
run	O
most	O
efficiently	O
with	O
Magic	O
format	O
disks	B-Device
.	O
</s>
<s>
At	O
least	O
one	O
of	O
the	O
Macintosh	O
emulators	O
also	O
had	O
a	O
circuit	O
to	O
read	O
Mac	O
disks	B-Device
,	O
but	O
could	O
make	O
the	O
emulations	O
slower	O
and	O
less	O
reliable	O
.	O
</s>
<s>
It	O
was	O
faster	O
and	O
more	O
efficient	O
to	O
convert	O
Mac	O
disks	B-Device
to	O
Magic	O
format	O
first	O
.	O
</s>
<s>
The	O
HART	O
chip	O
(	O
IC	O
number	O
HARTD1©87HCI	O
)	O
also	O
allowed	O
copying	O
conventional	O
ST	O
disks	B-Device
much	O
faster	O
.	O
</s>
<s>
This	O
was	O
a	O
smaller	O
version	O
of	O
The	O
Discovery	O
Cartridge	O
that	O
plugged	O
into	O
the	O
Atari	B-Device
ST	I-Device
cartridge	O
slot	O
and	O
had	O
a	O
cable	O
for	O
1	O
drive	O
that	O
allowed	O
converting	O
Mac	O
disks	B-Device
.	O
</s>
