Spectrum Computing

It might be me, but it seems that there is a bit of a mix or confusion between both statements. We set OffsetX=0, OffsetY=16 and print a character to the videoram. We store the first byte at address 16384, the next byte at 16416 (16384+32), etc. A character will appear on the screen as printed using...

I'm wondering, if this is just a thing for these FPGA boards ? Which it seems to be. Could be interesting to be implement on ZX Next, but I think the real killer application for this (if it is really that fast or simple to use, although it doesn't quite seem to be), would be and Add-On board to plug...

I'd imagine it helps whenever you draw in a solid colour, because you can effectively set the colour and then just write as if it were 1bpp. Writing multicoloured objects would be trickier though, and that was where the Amiga started to fall down. Yes, It will, but then what is the reason of having...

Excelent work @Tommo

3. Offsets[/b] ... We set OffsetX=0, OffsetY=16 and print a character to the videoram. We store the first byte at address 16384, the next byte at 16416 (16384+32), etc. A character will appear on the screen as printed using basic's PRINT AT 2.0; The address 16416 is only correct if the offset was s...

From all the documentation/explanation mentioned, this seems to be a new Graphics card interface, that behaves in a similar way to how the Commodore Amiga and similars worked. I'm not sure, if all the extra data and code needed to make this work, will allow for fast updates, since we are adding a lo...

I remember that I did a vertical bar chart App in BASIC, when there was elections around 1983 or 84, to show the results.
I probably still have that on tape somewhere.

Just to show to my parents, what I could do with the Speccy.
It was not only games

Mine is really simple.
Just my first name (Rui) first letter (R), followed by my last name (Martins)

I only use alias in the normal sense, in competitions.

If you are getting different check sums each time, there is definitely a problem with the ROM, yes. OR one of the lines (data or control) reaching the ROM Sometimes, just redoing the solder on the chip, solves some problems with broken or intermittent solder joints. The fact that the behaviour chan...

Just took a peak at the "ZX prosilver" style. Nothing to point out at first sight, except that it has too much BRIGHT 7. :) If someone, is actually printing the forum (sometimes, it might be handy to print), the CSS can have specific rules for printing, that can make the pages just white p...

49 years young, since last March

The days don't have enough hours to do everything I want to do!

Cool concept with a nice and fast implementation. Sometimes, it seems that the green areas in a later level (that looks like a comb of RED/GREEN or RED/BLACK, that alternates, sometimes the GREEN doesn't seem to replicate more virus. I'm assuming, it's to keep the frame rate high, and hence you are ...

Hi @RMartins, Things take time. We don't update the live database. When it's done you will see a green tick on your post. Sorry, it was not my intent to seem pushy. I know things take time. I was just giving feedback on my part. NOTE: I have been having some web problems with SpectrumComputing.co.u...

PeterJ wrote: ↑Fri Apr 22, 2022 6:54 am @RMartins,
Steve Wilcox from Elite won't allow downloads. I've approached him a couple of times.

It should be distribution denied.

Yep, my point was that the info on the page is not coherent.

I just checked again and it's still incoherent.

https://spectrumcomputing.co.uk/entry/1 ... um/Airwolf
Airwolf, shows as being available, but none of the files can be downloaded or played on browser.

Very nice photos and nice Museum.

https://hardware.slashdot.org/story/22/ ... ssian-bomb

Lost of Retro machines have been destroyed.

Just sent my Speccy off to Mutant Caterpillar for a refurb, looking at treating myself to one of these as well - came here to ask whether I could load from tape and save to card, in order to preserve my terrible type-ins from the 80s. Looks like it's a Yes :) Yep, you can. And it's even easier when...

Just for note, last Saturday at 18:20 (UK/Lisbon time) the site was down.

This time it didn't appear to be a DNS issue, but just the fact that the site was not responding.

... Specasm is written in C and built with z88dk. The keyboard entry routine is here . I'm using z88dk's in_inkey() function to read the key. A loop is started after the key is read, in which we re-scan the keyboard a fixed number of times, sleeping for 20ms in between each scan. We exit the loop i...

... I might have misunderstood exactly what you want to do, but this is the classic routine. In your case you'd make C=0 every time. ; xy2screen: ;arrive with B=y 0-192, C=x 0-255, return with DE at corresponding screen ld a,b rra rra rra and 24 or 64 ld d,a ld a,b and 7 or d ld d,a ld a,b rla rla ...

Unable to load the ZIP on Zero emulator.
"start index can not be less then zero"

It has a weird directory in the ZIP.

Sad news.

I did some reading up last night and apparently a common cause of intermittent issues are extensions. Therefore I have temporarily disabled some recently added ones. These are Smartfeed and Dark mode. With these sorts of issues it's often a guessing game! That Dark mode, was really bad too. Not tha...

Nice story Bruno. Neptun 156 green monochrome monitor You mean that one, from Poland? https://pl.wikipedia.org/wiki/Neptun_156 https://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Elwro_800_calosc.jpg/300px-Elwro_800_calosc.jpg So you had a Polish monitor while in Poland we had Portugese Timex...