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Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
[QUOTE=roko;512027]We all do the things that we think are important for us[/QUOTE]
...and sometimes we do some not-so-important things just to get a little amusement :p -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
[QUOTE=roko;515828]Make that 4 banks of 2048K x 16bits?
If indeed it is the K4S281632K...[/QUOTE]
oops, yes. That'll teach me to be clever heh
4 Banks of 2M * 16 bits -
2 48K speccys dead..Hey guys! I've got two of our rubbery friends with me that need some help. They've been like this for some time, but I would like to try and fix th…
... an egg on this one...), Roko was kind to burn me ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
[QUOTE=roko;518342]When it goes under the head of 'export of electronics' then there are lots of formalities, I can imagine. How about 'collection of chips' .[/QUOTE]
[b]Good point.[/b] -
ZX80 FaultyI have a boxed ZX80 that when I connect to the telly it doesnt tune in right. I can use the K/Board and see that its working on the screen. Iv tried …
... more includined to agree with roko on this one, its all ... -
ZX80 FaultyI have a boxed ZX80 that when I connect to the telly it doesnt tune in right. I can use the K/Board and see that its working on the screen. Iv tried …
... more includined to agree with roko on this one, its all ... -
modded zx81[url]http://cgi.ebay.co.uk/Modified-ZX81-Working-/200586397378?[/url] thought it might be of interest, no I'm not gonna bid
@roko
yeah okay....
[url=http://www.biehold.nl/roelof/ZX80-kl.JPG]that one is worse
[img]http://www.biehold.nl/roelof/ZX80-kl.JPG[/img][/url]
you win all the internet points =) -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
[QUOTE=roko;520117]Also downgraded to ULA 5C112E! This can't work, can it?[/QUOTE]
This is my old broken ZX boards. I only place ULA chip to issue 6a board. Yet is photos correct :) -
Hacking a Joystick InterfaceI have a DK'Tronics twin-port joystick interface that does Kempston and Sinclair 0-6 keys. I know it has only 14 lines connecting it to the edge con…
... to 0. From the diagram roko has just sent me they ... -
I cant get this listing to run!Ive read this through so many times my eyes are misting up! [url]ftp://ftp.worldofspectrum.org/pub/sinclair/magazines/DUC/Issue08/Pages/DUC0800039.jp…
Roko, can you simply tell me step by step how to do this? Im still a bit confused!! -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
And Jed, just to put the Opus issue to bed Roko was kind enough to supply me with the 2.2 ROM and now me old toaster is plugged into the Opus, everything works like a charm!! -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
[QUOTE=roko;528589]I several times replaced ... 9.[/QUOTE]
Thanks Roko,
Easier with a ... -
New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... posting a nice photo roko sent me... thanx roko.
[URL ... -
New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
[QUOTE=roko;534369]
Has anyone already ' ...
