New OC

Hello, Igor!

Saturday March 08 1997 00:25, Igor Gruzdev wrote to Konstantin Winogradow:
KW>> Exactly. My friend was planning to do just that, but most likely
KW>> has already done it. There is one point here - it is much easier to make
KW>> text mode in any spec without the ability to read from the screen, but
KW>> this is not always convenient and working with it requires a little more
KW>> RAM.

> And what about the circuit design solution? In general, in more detail?
So it is. Don't believe it if they say that they don't make anything new for spec hardware anymore. They do it here ;) Here are a few developments by
two of my friends.

1. Super Spectrum. Any Spectrum model can be equipped with additional hardware and additional memory is installed on a 30-pin SIMM (1- or 4-megagram or 256-kb, with or without regeneration). The memory is automatically
located whenever you access the extended memory ports Profi (1MB),
ATM-1 (512kb), Scorpio (256kb) or 6.7 bits of port #7FFD+port Profi (512kb/1mb).
The circuit is commercial (although there is nothing complicated there, 20 mikrukh). Publication under
question.

2. PC keyboard(XT). The circuit on a single-chip is mounted in parallel with a standard keyboard and it is possible to work simultaneously on both. Doesn't slow down the computer, uses only the pins of a standard keyboard andstrobe(KEY_RD).

3. Text screen 25 lines 80 characters per line. It's almost done, but there are
several options, there is no final one yet. Again, for any spec. Output to
the screen occurs when _writing to ROM_ from address zero -
2kb symbols + 2kb attributes.
The circuit only allows writing to the screen, so it is necessary to store
a buffer image of the screen in RAM. The border of the spectrum is completely preserved at the top and bottom, and on the sides there is a border indentation of 2 familiar places. The circuit is made on 531GG1+555KP15+something else.
The most important thing is that the authors of the circuit are not against publishing it after final
revision!

4. PC keyboard (AT) + PC mouse. Under development. An AT keyboard and PC mouse will be used. Single-chip connection. The mouse will emulate a Kempston mouse. Those. programs with support for the Kempston mouse will
work without suspecting that the PC mouse is in the user's hand.

This is briefly about what's new....

> With all sorts of regards and wishes.
> Igor.
Sincerely, Konstantin.

... and you are all about emulators and about emulators.

Hallo Andrew!

Wednesday March 05, 1997 17:42, Andrew MOA wrote to George Shepelev:

GS>> Forte)... What about text editors, indistinguishable by
GS>> interface from
GS>> those used on “real” personal computers?

GS>> Well, how idea?

AM> Impressive.
AM> Implement it.

Economically not profitable :(

Good luck George

GS> Economically not profitable :(

What does this have to do with it? If I make a program, then in theory I don’t care what its appearance will be, and I’ll make it the way people want.

KW> So it is. Don't believe it if they say that they don't make anything new from
KW> hardware for spec anymore. They do it here ;) Here are a few
KW> developments of two of my friends.

[blurred by rain]

KW> 3. Text screen 25 lines, 80 characters per line. It's almost done, but
KW> there are several options, there is no final one yet. Again, for any spec.
KW> Output to the screen occurs when _writing to ROM_ from zero address - 2kb
KW> symbols + 2kb attributes. The circuit only allows writing to the screen, so
KW> it is necessary to store a buffer image of the screen in RAM. The border of the spectrum is preserved
KW> at the top and bottom completely, on the sides - a border indentation of 2 familiar places. The
KW> circuit is made on 531GG1+555KP15+something else. The most important thing is that the authors of the scheme are not
KW> against publishing it after final revision!

Boom wait... Don’t forget there, if anything happens. I think this is of interest to many.

13 Mar 97 23:05, Konstantin Winogradow wrote to Igor Gruzdev:

[skipped]

KW> 4. PC keyboard (AT) + PC mouse. Under development. A
KW> AT-keyboard and PC-mouse will be used. Single-chip connection. The mouse will
KW> emulate a Kempston mouse. Those. programs with support for the Kempston mouse
KW> will work without suspecting a PC mouse in the user's hand.

Why reinvent the wheel? because it already exists....

[skipped]

Poman.

RA>>> naturally refers not only (and not so much) to the video... No
RA>>> climbing directly into the hardware...
AM>> I would be more specific - in ROM.

FP> What exactly do you mean?

There was also a smiley there.

FP> If you are talking about placing the BIOS there, then I’ll explain it again: BIOS
FP> will be located in the place of BASIC-128.

IMHO 128 Spectrum without an on-screen BASIC editor is no longer a Sinclair. But
that's not the point. I don’t quite understand, at the current stage of development of “sinkler engineering”, why an OS in a ROM is better than a bootable OS. And why should the BIOS be
in ROM? I proceed from the fact that if possible there is no need to go into the standard ROM. But
this is all IMHO.

FP> The ROM itself can be changed as you wish.

I can tell you from experience (both my own and even more so that of others) that the ability to “change”
ROM is a big hemorrhoid.

FP> By the way, about the hardware. IMHO, in general, it would be necessary to describe and
FP> document all known hardware for Speccy.

It’s a good thing, and useful. Get busy?

Andrew

FP> In a message of 07 Mar 97 Alexandr Bogdanow wrote to Andrew MOA:

AB>> But about the NEW OS I will say this:

AB>> It would be good, of course, but it’s too late (in my opinion)

AB>> T.K. ATM-TURBO,ATM-TURBO2,TURBO2+,PROFI (all models) have already been discontinued
AB>> production
AB>> and are not available :(

FP> Damn, I'm already tired of repeating: MINIMUM CONFIGURATION - 128 KB + 1
FP> DISK DRIVE
^^^^^^^^ well, no tape recorder!!!
FP> + nothing!!!
^^^^^^^ and what kind of bloat is this???