... *could* come up with a schematic to convert speaker-level signal ...

... )...

... looking at the schematic for the Issue 4a (and ...

... 't appear to have a schematic for a toastrack 128K - only ...

... look at the Issue 3B Schematic along with [url=http://www ...

... it should do on the schematic (probably, amongst other places, the ...

... additionally - although my analogue electronics fu is not all that strong, looking at the schematics for an Issue 2 suggests that the power supply that generates some of the 'weird' voltages (+12v) is a switch mode power supply, which gets regulated by ...

These days, use flash - don't bother with eprom. You can replace the ROM by making an external board that connects to the edge connector, and nails ROMCS high just like ZX Interface 2, so that the on-board ROM never gets selected. Simple decoding logic ...

... through the Spectrum 128K +2 schematic.

It uses 4 ...

... through the Spectrum 128K +2 schematic.

It uses 4 ...

... through the Spectrum 128K +2 schematic.

It uses 4 ...

... .tzx files made by myself, Schematic's + PCB layouts/cad project ...

... .tzx files made by myself, Schematic's + PCB layouts/cad project ...

... haven't looked at the schematic) into the search and you ...

... night I scribbled out a schematic on the back of an ...

... I'll draw up a schematic and email it to you ...

... haven't looked at the schematic) into the search and you ...

I have emailed a schematic/diagram for you to look at. I hope it's clear, but I'm not good at art :)

... ---/__/
[/code]In the schematic above, the XOR/XNOR gates ... [/B]. The two in the schematic, [B]Ax[/B] and [B ...

... need to look at the schematic to determine which chip holds ...

I'm looking at the schematic. It seems related to
... that this piece of the schematic do the RAM refresh, but ...

... all.

Here is schematic of similar thing: external ROM ...

... the machine (refer to the schematic for your particular motherboard to ...

If you're making the interface's schematic and the ROM's code public for free, then count me in as well. I'll make one myself.

Thanks,
Marcelo.

... 're making the interface's schematic and the ROM's code ...

[QUOTE=zub;189166]
Was it an exact clone? I can see a reference to "Kempston Joystick" so perhaps not? :)[/QUOTE]

If you read the schematic you see there is no joystick port or expansion port. No need to read Russian for that ! ;)

... 's extremely simple. It's schematic is even more simple. It ...

... be generated from a usual schematic. In this case i would ... start from this Leningrad-1 schematic, with modified I/O space ...

... be generated from a usual schematic. In this case i would ... start from this Leningrad-1 schematic, with modified I/O space ...

... lot I have a cart schematic designed by Alvin Albrecht. The ... are long gone, but the schematic survives - I just need to ...

... lot I have a cart schematic designed by Alvin Albrecht. The ...