Russian ZX BUS
 

Where can I find informations about ZX BUS used on russian ZX clones ? Pinout is same as on original ZX Spectrum BUS ? :v2_conf2:

VELESOFT

1. You should use schematic diagram of the russian clone named KAY.
2. You should use schematic diagram of the russian clone named Scorpion.
3. You should use document from attachment.

Now the ex Soviet Union standard ZX Spectrum bus - NemoBus. NemoBus - is a modified bus ZX Bus. NemoBus - this is not the Russian standard, this standard ex Soviet Union. NemoBus used in all computers KAY, Pentagon-1024SL v1.4, v2.2. A computer Scorpion ZS256/Turbo+ is not used NemoBus, there is clone ZX Bus. The main difference NemoBus of ZX Bus - the existence of arbitration. Slots NemoBus not the same, highest priority is the 1 st slot, the 3rd slot is the lowest priority. To work NemoBus are most familiar to the original scheme of computer KAY-1024SL:KAY-1024.rar

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Try this...

This is very similar as original ZX Spectrum BUS :v2_rolley
Pinout of main signals(from CPU) is same. :v2_thumb:
You can connect interface designed for original ZX models to russian ZX clones with this ZX bus layout.

http://velesoft.speccy.cz/other/zx_bus_video.png

This of course can be done, but it does not make sense.

You can connect to russian ZX clones:
- my K-MOUSE TURBO interface (compatible with russian wheeled kempston mouse)
- DATA-GEAR (DMA)
- SAA1099 interface (sound chip from SAM COUPE)
- DivIDE interface (use extra rom+ram, ide ports, systems with FAT16 support, TAP, SNA, Z80 loading....)
- MB02 interface (DMA support, external memory rom and ram(512kB),rtc,8255)

And I can connect to my original ZX128+2:
- GENERAL SOUND
- Z-CONTROLLER
- ZXMC

In the ex USSR normally connect using soldering iron.
Doubtful that these devices will be popular in the ex Soviet Union.

No, but is it possible connect.

Exist any russian interface with external memory (sram/rom) ?

VELESOFT

Explaine, please.