<s>
ZX	B-Device
Spectrum	I-Device
Next	I-Device
is	O
an	O
8-bit	O
home	O
computer	O
,	O
initially	O
released	O
in	O
2017	O
,	O
which	O
is	O
compatible	O
with	O
software	O
and	O
hardware	O
for	O
the	O
1982	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
The	O
Next	O
started	O
life	O
in	O
2010	O
in	O
Brazil	O
,	O
as	O
a	O
variant	O
of	O
the	O
TK95	B-Device
Spectrum	O
clone	O
.	O
</s>
<s>
In	O
2016	O
,	O
Victor	O
Trucco	O
and	O
Fabio	O
Belavenuto	O
announced	O
the	O
"	O
TBBlue	O
"	O
firmware	O
,	O
named	O
after	O
the	O
two	O
creators	O
and	O
the	O
colour	O
of	O
the	O
solder	O
mask	O
of	O
the	O
motherboard	B-Device
,	O
a	O
bare	O
circuit	O
board	O
implementation	O
of	O
the	O
product	O
for	O
advanced	O
hobbyists	O
.	O
</s>
<s>
With	O
the	O
help	O
of	O
Henrique	O
Olifiers	O
the	O
duo	O
wanted	O
to	O
export	O
the	O
TBBlue	O
to	O
the	O
UK	O
,	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
's	O
original	O
home	O
,	O
having	O
received	O
moderate	O
success	O
with	O
the	O
board	O
in	O
Brazil	O
.	O
</s>
<s>
Although	O
initially	O
intended	O
to	O
use	O
the	O
original	O
ZX	B-Operating_System
Spectrum	I-Operating_System
's	O
Z80	B-General_Concept
chip	O
,	O
the	O
design	O
was	O
altered	O
to	O
use	O
the	O
Xilinx	O
Spartan-6	O
FPGA	B-Architecture
,	O
to	O
allow	O
"	O
hardware	O
sprites	O
,	O
scrolling	O
,	O
and	O
other	O
advanced	O
features	O
to	O
be	O
incorporated	O
within	O
the	O
machine	O
itself	O
"	O
.	O
</s>
<s>
The	O
Next	O
's	O
case	O
design	O
is	O
by	O
Rick	O
Dickinson	O
who	O
designed	O
the	O
original	O
48K	B-Operating_System
Spectrum	I-Operating_System
and	O
Spectrum+	O
,	O
but	O
passed	O
away	O
during	O
the	O
development	O
of	O
the	O
keyboard	O
of	O
the	O
computer	O
.	O
</s>
<s>
In	O
the	O
official	O
Raspberry	B-Operating_System
Pi	I-Operating_System
magazine	O
"	O
MagPi	O
"	O
,	O
Lucy	O
Hattersley	O
called	O
it	O
"	O
a	O
lovely	O
piece	O
of	O
kit	O
"	O
,	O
noting	O
that	O
it	O
is	O
"	O
well-designed	O
and	O
well-built	O
:	O
authentic	O
to	O
the	O
original	O
,	O
and	O
with	O
technology	O
that	O
nods	O
to	O
the	O
past	O
while	O
remaining	O
functional	O
and	O
relevant	O
in	O
the	O
modern	O
age	O
"	O
.	O
</s>
<s>
Revisions	O
of	O
the	O
Next	O
's	O
motherboard	B-Device
's	O
design	O
are	O
referred	O
to	O
as	O
"	O
Issues	O
"	O
,	O
in	O
keeping	O
with	O
the	O
original	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
and	O
have	O
been	O
made	O
to	O
either	O
improve	O
quality	O
or	O
in	O
response	O
to	O
problems	O
with	O
the	O
supply	O
of	O
components	O
.	O
</s>
<s>
Four	O
models	O
of	O
the	O
Next	O
were	O
produced	O
in	O
the	O
first	O
Kickstarter	O
using	O
the	O
Xilinx	O
Spartan-6	O
FPGA	B-Architecture
.	O
</s>
<s>
+	O
Overview	O
of	O
the	O
first	O
Kickstarter	O
's	O
Next	O
models	O
Model	O
name	O
Cased	O
real-time	O
clock	O
installed	O
Wi-Fi	O
installed	O
Raspberry	B-Operating_System
Pi	I-Operating_System
Zero	I-Operating_System
"	O
Accelerator	O
"	O
installed	O
Board	O
Issue	O
Notes	O
ZX	B-Device
Spectrum	I-Device
Next	I-Device
developer	O
board	O
No	O
No	O
No	O
No	O
2A	O
Only	O
board	O
Issue	O
which	O
can	O
fit	O
in	O
an	O
original	O
,	O
modified	O
,	O
ZX	B-Operating_System
Spectrum	I-Operating_System
case	O
ZX	B-Device
Spectrum	I-Device
Next	I-Device
Yes	O
No	O
No	O
No	O
2B	O
Does	O
not	O
require	O
modification	O
,	O
with	O
a	O
capacitor	O
,	O
to	O
eliminate	O
electronic	O
"	O
noise	O
"	O
ZX	B-Device
Spectrum	I-Device
Next	I-Device
Plus	O
Yes	O
Yes	O
Yes	O
No	O
2B	O
ZX	B-Device
Spectrum	I-Device
Next	I-Device
Accelerated	O
Yes	O
Yes	O
Yes	O
Yes	O
2B	O
Accelerator	O
enables	O
loading	O
compressed	O
tzx	O
tape	O
images	O
from	O
SD-card	B-Device
and	O
provides	O
emulation	O
of	O
the	O
MOS	O
Technology	O
6581	O
SID	O
soundchip	O
.	O
</s>
<s>
All	O
models	O
include	O
1024	O
KiB	O
RAM	B-Architecture
(	O
768	O
KiB	O
free	O
)	O
and	O
can	O
be	O
upgraded	O
by	O
the	O
owner	O
;	O
</s>
<s>
Adding	O
two	O
512	O
KiB	O
chips	O
brings	O
the	O
RAM	B-Architecture
to	O
2048	O
KiB	O
(	O
1792	O
KiB	O
free	O
)	O
.	O
</s>
<s>
Two	O
models	O
of	O
the	O
Next	O
were	O
offered	O
in	O
the	O
second	O
Kickstarter	O
using	O
the	O
Xilinx	O
Artix-7	O
FPGA	B-Architecture
.	O
</s>
<s>
Both	O
models	O
are	O
cased	O
,	O
include	O
a	O
real-time	O
clock	O
,	O
Wi-Fi	O
,	O
and	O
2048KiB	O
RAM	B-Architecture
(	O
1792	O
KiB	O
free	O
)	O
,	O
use	O
board	O
Issue	O
4	O
,	O
and	O
can	O
be	O
upgraded	O
by	O
the	O
owner	O
;	O
</s>
<s>
A	O
Raspberry	B-Operating_System
Pi	I-Operating_System
Zero	I-Operating_System
unit	O
can	O
be	O
installed	O
as	O
an	O
"	O
Accelerator	O
"	O
into	O
the	O
Next	O
Plus	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
native	O
OS	O
,	O
the	O
Next	O
is	O
able	O
to	O
run	O
prior	O
versions	O
of	O
Sinclair	B-Language
BASIC	I-Language
,	O
such	O
as	O
48K	O
BASIC	O
and	O
128K	O
BASIC	O
.	O
</s>
<s>
The	O
Next	O
is	O
also	O
able	O
to	O
run	O
CP/M	B-Application
.	O
</s>
<s>
For	O
licensing	O
reasons	O
,	O
CP/M	B-Application
does	O
n't	O
come	O
bundled	O
with	O
the	O
machine	O
,	O
but	O
has	O
to	O
be	O
downloaded	O
separately	O
.	O
</s>
<s>
Although	O
this	O
does	O
potentially	O
open	O
a	O
sizeable	O
software	O
library	O
of	O
CP/M	B-Application
to	O
the	O
Next	O
users	O
,	O
it	O
is	O
worth	O
noting	O
that	O
CP/M	B-Application
cannot	O
take	O
advantage	O
of	O
the	O
machine	O
's	O
advanced	O
capabilities	O
,	O
such	O
as	O
large	O
memory	O
.	O
</s>
<s>
NxTel	O
comes	O
bundled	O
with	O
the	O
machine	O
on	O
the	O
accompanying	O
SD-Card	B-Device
.	O
</s>
<s>
Some	O
of	O
the	O
original	O
ZX	B-Operating_System
Spectrum	I-Operating_System
games	O
have	O
also	O
been	O
upgraded	O
or	O
are	O
being	O
upgraded	O
to	O
utilize	O
Next	O
's	O
improved	O
graphics	O
and	O
sound	O
.	O
</s>
<s>
Among	O
the	O
most	O
notable	O
remakes	O
are	O
Atic	B-Application
Atac	I-Application
with	O
improved	O
graphics	O
by	O
Craig	O
Stevenson	O
.	O
</s>
<s>
The	O
NextZXOS	O
and	O
NextBASIC	O
are	O
both	O
released	O
under	O
Open/Closed	O
-Source	O
hybrid	O
license	O
called	O
"	O
The	O
Next	O
License	O
"	O
,	O
with	O
all	O
parts	O
of	O
the	O
OS	O
being	O
closed	B-Application
source	I-Application
by	O
default	O
,	O
unless	O
explicitly	O
placed	O
under	O
Open	B-License
Source	I-License
MIT	B-License
License	I-License
.	O
</s>
<s>
The	O
OS	O
and	O
BASIC	O
are	O
publicly	O
hosted	O
on	O
GitLab	B-Application
.	O
</s>
<s>
Hardware	O
is	O
released	O
under	O
a	O
"	O
mixed	O
source	O
"	O
proprietary	B-Application
license	I-Application
.	O
</s>
<s>
The	O
VHDL/Verilog	O
for	O
the	O
FPGA	B-Architecture
digital	O
design	O
is	O
available	O
on	O
GitLab	B-Application
and	O
licensed	O
under	O
GPL3	O
.	O
</s>
<s>
The	O
Next	O
is	O
able	O
to	O
reproduce	O
the	O
behaviour	O
of	O
any	O
prior	O
Sinclair	B-Operating_System
ZX80	I-Operating_System
,	O
ZX81	O
or	O
Spectrum	O
machine	O
,	O
as	O
well	O
as	O
some	O
notable	O
ZX	B-Operating_System
Spectrum	I-Operating_System
clones	O
(	O
both	O
official	O
and	O
unlicensed	O
)	O
through	O
a	O
feature	O
called	O
"	O
Personalities	O
"	O
.	O
</s>
<s>
Examples	O
of	O
such	O
clone	O
personalities	O
are	O
Timex	O
Sinclair	O
TC2048	B-Device
and	O
the	O
russian	O
Pentagon	B-Device
machines	O
.	O
</s>
<s>
The	O
default	O
personality	O
of	O
the	O
Next	O
is	O
based	O
on	O
Sinclair	B-Operating_System
ZX	I-Operating_System
Spectrum	I-Operating_System
+3e	O
.	O
</s>
<s>
The	O
Next	O
can	O
also	O
be	O
used	O
to	O
recreate	O
a	O
number	O
of	O
other	O
,	O
non-Spectrum	O
based	O
computers	O
,	O
such	O
as	O
the	O
Acorn	B-Device
BBC	I-Device
Micro	I-Device
,	O
as	O
long	O
as	O
their	O
hardware	O
will	O
"	O
fit	O
"	O
into	O
the	O
FPGA	B-Architecture
.	O
</s>
<s>
The	O
machine	O
can	O
also	O
be	O
made	O
to	O
boot	B-Operating_System
directly	O
into	O
an	O
alternative	O
core	O
.	O
</s>
<s>
A	O
Sinclair	B-Device
QL	I-Device
core	O
is	O
described	O
as	O
"	O
very	O
stable	O
,	O
[	O
booting	B-Operating_System
]	O
every	O
time	O
"	O
.	O
</s>
