Byte and external devices
ZXNet echo conference «hardware.zx»
Hello, All
Is it possible to simultaneously connect a floppy drive, an AY synthesizer,
General Sound Cart and a regular old dot matrix printer? And how to do this???
(I have a disk drive and printer controller, but there are no chips on the disk drive
ROM)
THANK YOU IN ADVANCE!!! :D :D :D :D :D :D :D :D :D
Hello BYTEMAN
I wouldn't remake into . Timed car
close to branded models, why disfigure it? It makes sense to expand the memory to
128K (according to any standard scheme), add AY, and Beta Disk controller
(external). But if you don’t have much experience working with hardware, then these extensions
quite a risky undertaking. In multilayer (4) board, and damaging it,
Finding the problem won't be easy.
Hello BYTEMAN
You all have Scorpios and Pentagons with cool GENERAL sounds and tr-dos. And
I'm just an ordinary old Byte. Please advise at least something, help
make at least a Pentagon 48 out of it with an AY synthesizer and holes dos. Please respond
at least someone!!!!!!!!!!!! :v2_cry:
Hello Conan
2 BYTEMAN - The bytes that I saw were expanded using a special board,
inserted into the system connector. So, one of my buddies should have one like this
the scarf to remain. Check what your Bayta moel is - what if it matches - then I
I’ll extract this payment from him and tell you what to say = - after all, in the same country
live :)
Hello Conan
Con> I wouldn't remake into . Machine by
Con> makeshift is close to branded models, why disfigure it? Makes sense
Con> expand memory to 128K (according to any standard scheme), add AY, and
Con> Beta Disk controller (external). But if you don’t have enough experience with hardware
Con> is a lot, then these extensions are quite a risky undertaking. In
Hello BYTEMAN
BYT> How to connect them? Is it possible to use the system connector? If
BYT> it will be necessary to solder something, my dad is an electrician, he will solder everything, just
BYT> need a schema.
The BZ128 (BYTE) controller was produced. In addition, it was necessary to make changes to
diagram of the computer itself (a description of the alterations was published in an article entitled
(C) DELTA is in my text form). If you can find
specified controller (or its circuit), then the expansion will be significantly simplified.
Hello BYTEMAN
BYT> I have a disk drive controller, but it doesn’t have ROM chips)
What about this? I have a controller, a circuit too (who needs a circuit -
DOWNLOAD: www.sash-a.nm.ru/schematics.png). But it has strange outputs:
DC00, DC08, DC10, DC18... And they are all underlined. Where to insert them and where is the ROM with
tr-dosom?
Hello Conan
I have some kind of controller. They say it comes from a byte. Photos here:
www.sash-a.nm.ru/2.jpg and www.sash-a.nm.ru/3.jpg
Hello BYTEMAN
BYT> What about this? I have a controller, a circuit too (who needs
BYT> diagram - DOWNLOAD: www.sash-a.nm.ru/schematics.png). But it has
BYT> strange outputs: DC00, DC08, DC10, DC18... And they are all underlined.
BYT> Where to insert them and where is the ROM with tr-dos?
BYT> What about this? I have a controller, a circuit too (who needs
BYT> diagram - DOWNLOAD: www.sash-a.nm.ru/schematics.png). But it has
BYT> strange outputs: DC00, DC08, DC10, DC18... And they are all underlined.
BYT> Where to insert them and where is the ROM with tr-dos?
Apparently the ROM with TyRDOS was soldered onto the main floor on the second floor and made
scheme for switching between ROMs when accessing TyRDOS
Hello BYTEMAN
Are there any differences? IMHO, regular TR-DOS should be suitable... Which firmware is in
Emulators are a dime a dozen... Try it! No one will give you a punch for “trying it” ;)
Hello jdigreze
jdi> Are there any differences? IMHO, regular TR-DOS should be suitable... Which
jdi> firmware in emulators is a dime a dozen... Try it! For "try" in the forehead
jdi> no one will give ;)
No, judging by the diagram this is not a TRDOS controller.
Most likely, a boot loader was inserted into the Byta ROM, which
system disk
read the first sector and ran its code to further boot the system.
Does anyone have Byte firmware files? You can find out everything from them.
PS. Sorry, I found it while searching the forum.
Conan already posted:
http://zx.pk.ru/attachment.php?attachmentid=640
Now I'll take a look, maybe something will turn out.
PS2. Two more firmwares for 2 kilobyte ROMs (DD66 and DD71) are missing.
Hello jdigreze
I looked at the diagrams and firmware of Byte:
1) According to the diagram, FDD ports: 08h,28h,48h,68h,09h - do not fit in with the addresses
TRDOS.
2) In both firmware there is nothing related to working with FDD ports.
It is quite possible that there is still software in the remaining ROM chip (DD71), but it
I haven't seen the content yet.
Hello caro
car> Two more firmwares for 2 KB ROMs (DD66 and DD71) are missing.
These devices contain codes for compatibility with ZX SPECTRUM. And the pooch is TR-DOSA
most likely external. Maybe from byte 01 will do? Here vasstr wrote that
It has Byte 01. Maybe there is something in it?
PS. Striker told me that he could send an expansion board that
converts Byte 48 to Byte 128.
Hello BYTEMAN
So... Sorry, I missed it initially.
It’s just that people have a lot of misunderstandings on this topic.
Nothing much will do from Byte-01.
Judging by your profile, BYTEMAN, you live in Brest. I don’t think it will be special there
Problems finding any byte with TR-DOS from a newspaper ad.
And 128kb is easily soldered by hand, even on cardboard (that’s how I expanded the first Byte ;)
)
At the same time I am attaching my FAQ regarding bytes.
If anyone is interested or if anyone finds any inaccuracies, write in private.
┌─- code ───
"BYTE" FAQ
-+--------
(c) Sinus (als Restorer or Amon) 2006
Version: 1.0
Last modification date: 03/16/2006
Terminology as understood
-+--------------------------
The male connector is where the pins are.
The female connector is where the holes are.
“Box” is just such a box ^_~. I just don’t know what else to call it.
=========================================================
Q1. What is "Byte"?
A1. "Byte" is a computer software compatible with the Zx Spectrum.
Q2. What varieties are there?
A2. There are 3 (or maybe even 4) types of Bytes.
1) "BYTE" (in Latin letters). TODO.
Not considered further.
2) "Byte". The motherboard is integrated into the keyboard. White (occasionally
grey) slightly rough plastic, iron bottom.
There are various connectors on the back:
a) "Kempston Joystick" male connector, 9 pins (5 in one rowand 4 in another). Reminiscent of current COM connectors.
b) Food. 4-pin male connector, two central - GND,
at the edges +5 and +12
c) System connector. "Dad". Lots of contacts (to count how many) in
3 rows.
d) "Tape recorder". 5 (in some models 7) pin type connector
"Mom".
e) "RGB monitor". 7 (very rarely found 5) pin connector
like "mom".
f) "TV". Standard female connector for connecting to
televikhor. It will produce a color "secam" image.
The keyboard has many additional keys (cursors, "Edit" (CS+1),
"Reg 2" (CS+2), etc). There is also a set of keys “attached” to
unused keyboard port bits (#xxFE). Strava speaker
(beeper) and Kempston joystick.
Further will be referred to as "Byte" or if the difference between this
model and "Byte-01" then as "Byte-00"
3) "Byte-01". Identical to "Byte-00", only there is also a system unit (by
resembles a minitower in size), which is connected by a long cable (about 1.5
meters)
to the "box". The "box" is connected to the "system" connector.
Q3. How many layers does the Byte poata have?
A3. Believe it or not, but 8 (eight). If you unsolder the secam encoder, then
At the top left of the board, the layer numbering is clearly visible in the light.
6 inside and 2 outside the board.
Q4. Is it true that Byte-01 has 128kb of memory?A4. No. Byte-01 has 48 kilobytes of memory, but the “lower” memory is not implemented
on "RU6" and on "RU5", which makes it easier to expand to 128kb.
However, what can complicate it is that part of the "lower" memory is used in
as shadow RAM (known in the Spectrum world as "cache"), which gives
opportunity
use the CP/M system. TR-DOS is also loaded there.
Q5. Is it possible to expand the "Byte" to 128kb by plugging a certain board into
system connector?
A5. No. Expansion to 128kb (and higher ^_~) requires serious intervention in
computer diagram. Typically, 128kb controllers were produced in the form
small scarf (in most cases it was also integrated
music coprocessor (AY or YM)), which were located in the processor area and
small
Wiring was soldered to the right places on the board.
Q6. And what about the scarves that I saw my friends plug into the “syst” connector?
A6. This is a TR-DOS controller. The system connector has contacts for disconnecting
ROM, which allows you to connect a TR-DOS controller without mocking
fee.
Q7. What is in the Byta-01 system unit?
A7. In the system unit (we will also consider the “box” to be a system unit)
there is a drive controller on VG93, various connectors (of course
buffered),
board for additional expansions (about 8 connectors for connecting
rachlichny devices that could appear).Q8. Is a special version of TR-DOS required for Byte?
A8. For "Byte-00" it is not required. Any one that is “compatible” with yours will do.
controller.
However, due to the fact that the developers of Byte-01 went their own way, access to
the drive controller is carried out via ports different from the generally accepted ones,
Therefore, "Byte-01" requires a special version of TR-DOS.
Q9. Why is +12V required?
A9. For a speaker amplifier (and apparently for powering a three-channel tweeter
KR580VI93, broke to get the circuit, TODO).
Q10. Why are there 6 ROM chips in Byte (two RFs (or there are bourgeois
sometimes) 8 kb each and four RTs of 2 kb each (it seems))?
A10. in RFki a modified BASIC is stitched, two RTshki are used for
system needs (some kind of board logic is stitched there) and in the remaining two
The code for “Zx Spectrum compatibility mode” has been flashed. When the button is pressed
"Together" they will mix part of the ROM, adding some compatibility with
original
Spectrum (in particular, it removes support for Russian fonts in BASIC).
└── code ───
PS Yes, the mouse was soldered. It’s true that you need to turn it into passive.
in fact, I don’t think it will be particularly difficult to connect a controller there from
caro, just take the byte circuit and carefully solder the wiring ;)
Hello BYTEMAN
BYT> How to do this?
if you don't want to assemble/buy an active mouse controller, you will need
assemble a controller for a passive mouse (about 6 - 8 small logic chips).
but you need to unscrew the mouse - unsolder the chip standing there and solder the wires
directly to optocouplers.
Controller circuits and other information can be found in old Speck electronics
magazines (for example Spectrofon and Zx-Format)
> And will the firmware need to be modified?
what firmware? where?
> As for buying a new byte with TR-DOS, I can’t. I recently
> a regular byte was brought. Instead of the old one.
Well, I don’t know. IMHO there are a lot of old bytes on people's closets collecting dust.
and for just $10 or even cheaper (if people are not cheap) you can have them
buy.
Assembling the TR-DOS controller by hand is a pain in the ass.
> What about the AU synthesizer?
but nothing. solder it (luckily it’s quite simple), connect it to the speakers - that’s it
sound ;)
> There is also a problem with the disk drive. I cut up the ELECTRONICS MS 5311 k
> computer. And in the BIOS I wanted to put Drive B as 5.25" 800 kb. But in the BIOS
> was only 1.22 MB and 350 kb.
where is the bios from byte??? :confused: never happened ;)
Hello Sinus
Sin> yes, the mouse was soldered. really, you need to turn it into a passive one.
How to do this? And will the firmware need to be modified?
As for buying a new byte with TR-DOS, I can’t. I recently got a regular byte
brought. Instead of the old one.
What about the AU synthesizer?
There is also a problem with the disk drive. I connected the ELECTRONICS MS 5311 to the computer. And in
BIOS wanted to put Drive B as 5.25" 800 kb. But in BIOS there was only 1.22 MB
and 350 kb. What should I choose?
PS On the drive, I moved the jumper as Drive 2 and loaded the head from
Signal Select.
Hello Sinus
Sin> Assembling the TR-DOS controller by hand is a pain in the ass.
Nothing like that. A week of work and joy... Nemov’s scheme at once
starts.
Hello Sinus
Sin> where in Byte BIOS???
YES BIOS IN A COOL COMPUTER... :mad:
They gave me a train...
Hello BYTEMAN
and a COOL computer is probably petse???
gee gee gee ;) ;) ;)
there is no cooler computer than the Spectrum ;)
Hello BYTEMAN
So... Well, we've moved away from the topic. So is there any way I can use this?
controller??? And can you give me exact resources with AC connection diagrams?
synthesizer, mouse and memory expansion?
Hello BYTEMAN
Why is PC cooler? Megahertz? Or the amount of memory? An elephant also has more brains
than humans, but for some reason humans dominate on Earth :)
Hello demon_zx
dem> Why is pts cooler? Megahertz? Or the amount of memory? An elephant has brains too
dem> more than humans, but for some reason humans dominate on Earth :)
Yeah, and Spectrum dominates in IT :)
Hello icebear
ice> Yeah, and Spectrum dominates in IT :)
I will cut the guys for being “cool” and “being in one place” :mad:.
Let's get on topic.
Hello, CHRV
I found the connection diagram for the AC controller on trd.speccy.cz, and the port diagram for
KEMPSTON MOUSE on WorldofSpectrum. The connection of the mouse itself is not clear in the diagram
mice, how to connect optocouplers, what needs to be changed in the mouse. Maybe eat at
Is there any suitable literature on some server?
Hello BYTEMAN
BYTEMAN
1) go download any normal emulator (anril is acceptable)
2) go to zx.da.ru (trd.speccy.cz) and download Spectrofon magazines from there,
ZX-Format. That's enough for now.
3) read. in some spectrophone the described connection diagram was available
mouse to the Spectrum.
Here. and more.
you asked for expansion diagrams. I rummaged around in the closet and basically found it.
it was a long time ago (8 years ago), but the circuits are 100% working.
watch here --> http://detstwo.h15.ru/downloads/schemes/schemes.html
Hello Sinus
PS But the controller circuit from Leningrad won’t work - it’s from Leningrad
is single-field, and the byte is two-field.
Hello Sinus
Sin> here. and more.
Sin> you asked for expansion schemes. I rummaged around in the closet and basically found it.
Sin> it was a long time ago (8 years ago), but the circuits are 100% working.
Thank you very much. I'll try...