Rubric "Bulletin of the Apparatchik"
Latest updates on the website zx.clan.su:
06/16/2017
An updated version of the "Guide" has been posted
by ZX Spectrum ports:
http://zx.clan.su/forum/11-46-1
Changed classification for Timex Computer
2048, and the computer Byte-01 was added.
06/29/2017
A modification has been presented for ZXM-Phoenix,
allowing you to control from the NemoBus
memory in the CPUO-CPUЗ windows. Finalization
allows you to disable onboard memory
computer in the windows CPU1-CPUЗ, and connect
instead it is the memory of external devices, which
allows external devices with their own
new memory and/or own manager
memory install it in the CPUO-CPUЗ windows:
http://zx.clan.su/forum/8-66-1122-16-1498688211
04.07.2017-23.07.2017
As part of the formalization of the Pentagon concept
v.1.5 added memory manager circuit and
summary of new management capabilities
memory, updated dock for ports:
http://zx.clan.su/forum/8-162-1
07/21/2017-09/12/2017
The "Guide to the Evolution of Development" has been updated
architecture of the ZX Spectrum."
New evolutionary branches have been added -
Kaluga, Moskva 48k with one memory field,
Byte, evolutionary trees have been changed for
branches Timex Computer 2048, Pentagon and
Leningrad, changes have been made to the description
weighting coefficients of address bits
memory manager ports:
http://zx.clan.su/forum/7-160-1
Peripheral equipment
Claudius with enviable determination
continues to improve hardware
part of a domestic emulator development
AY/YM on AVR from EvgenRU. This time he
created a smaller SMD
version that we managed to overclock
3OMHz:
https://www.worldofspectrum.org/forums/discussion/
comment/920434/#Comment_920434
Such an increase in frequency is a serious
application to improve emulation accuracy and
translation of a product from amateur development
boots in rankcommercial products.
Domestic clone building
Over the past few months, people were born
two clones at once: Karabas-128 from andykarpov
and ZXM-Jasper from Mick.
The main goal of the project Karabas-128,is
being a clonePentagon-128,as I understand it,
this is the author's training in creating projects
on CPLD. From an architectural point of view
the project does not bring any novelty, and for
third party users may be interested
Sen, perhaps only by his imprisonment under
original rubber casing. The author himself
positions the project as a computer with
minimum cost, which, however, is not
very consistent with the type chosen
body, which can hardly be attributed to
cheap. However, those who like to show off
"elastic band" with Pentagon inside
enough and that's why I'm sure it's not
latest revision of the board.
The main idea of the project ZXM-Jasper - this is
replacement module ULA for motherboard
mITX form factor. It's certainly a good thing...
native, although this is hardly a novelty of the approach
can be counted. In general, the project is presented
is just another, faceless devboard,
which was removed for greater impersonality
even standard for domestic clones
peripheral equipment such as BDI and
NemoIDE. This would be understandable if
the processor was moved to a replaceable module.
Then, such an impersonal devboard can be
would be used not only for
Spectrum, and not only with an iron process
rubbish But in reality, the project rather pursues
the purpose of recycling specific modules from
slot machines rather than some
architectural development. Of course, if these
Modules, due to their used nature, are cheaper
components, then a certain local
there may be expediency here. However,
there is doubt about unlimited availability
such cheap modules, because as soon as
When demand appears, the price will immediately rise,
which is due precisely to the limitations
proposals. It's also not very clear
use as edge inter-
face similarity ZXBus with 28 pins
in groups. It would be much more logical to use
call interface for edge connector
NemoBus with 31 contact groups, similar
ZXM-Phoenix, because ZXBus it's just
subset from NemoBus, and if desired
you can simply not use all contacts
when connecting an external device. Why
it was necessary to narrow the range of possible external
equipment, especially for "as if
universal design board",I don’t understand. B
in general, it is hardly possible to characterize
a project as a thoughtful development of something,
more like a local consumable
for those who like to experiment with devboards.
And I have no doubt that it is limited
the number of boards will find their users
tel.
Passion for ZX Next
The Westerners have another escalation of the war
copyrights. This time at the center of the conflict
is no longer located Vega+,but ZX Next. Own
claims for deduction of a small share for
the right to use ULA+ presented it
developer Andrew Owen,also known
according to numerous versions ROM SE BASIC for
Spectrum, including Open SE BASIC.
The essence of such an attack of commercialism from
Andrew Owen is not clear, but given the fact,
that in the Western community it is for some reason
have been disliked for a long time, it is quite possible
that this is some kind of his response to this
attitude. Well, because developersZX Next,
do not agree to any deductions, then they
had to be hastily cut out
configuration everything related to copyrights
Andrew Owen. This affected the first
queue ULA+, which is supported in ZX Next
there will be no more, and in the future,
most likely will not be supported and
architecture Chloe 28OSE using SE
BASIC. I'm not really sure about the latter
I'm worried, but I'm afraid, as if along with
The developers ZX Next didn't throw out the water
and the child, refusing to support video
modes Timex Computer 2048, using-
in SE BASIC, which would be extremely
undesirable for the entire community.
To replace ULA+ was quickly developed
standard ULA Next, initially twice
inferior in number at the same time
colors displayed on the screen. Several
drbars helped improve the characteristics
who proposed adding a mask to the standard
separating the number of colors for paper and
ink, which made it possible to vary the amount
quality of simultaneously reproduced colors
from 32 to 257 on screen, versus 64 colors
for ULA+. Of course, such forced
crutches did not add elegance and
simplicity in architecture and programming
ZX Next, but thistimes, we can say that
thanks to the help of drbars, its developers
got out. :)
Share your thoughts about the article