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My first program - a vertical scrollerHi all, I'm new here. Nice to meet you all! A couple of weeks ago I decided to learn Z80 assembly language. I spent many hours in front of the Spec…
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It's a little vertical scroller. My goal was to ... -
How paint in the down two lines ?The down two lines on the spectrum screen cant be used. But i remeber from the 80's that exist some code that allow us to paint on these two lines wi…
The down two lines on the spectrum screen cant be used. But i remeber from the 80's that exist some code that allow us to paint on these two lines with plot or draw or others.
Someone remember the code ?
thx in advance -
Broken +3I have noticed that some members on this forum prefer to repair Spectrums instead of just buying another one from ebay. I would like mine fixed at so…
... can be described as 32 vertical black lines on a green background ... -
Character Printing routines - 27/32 lines?There are lots of extra character-per-line routines out there for 42,51,64 even 85 characters. Are there any that do 7/6 pixel rows - and do 27 or 3…
... - and do 27 or 32 lines, as well as higher across ... -
Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... smooth (probably full 50 fps) vertical scrolling. Games like Monaco GP ... -
ZX Spectrum Woes...In my endeavours to get my second Spectrum (Issue 3) working I have replaced the CPU, memory and lower ram. I have fitted sockets for the CPU and me…
... from four four animated alternate vertical black and white bars to ... less a square wave. Pin 39 of the ULA is permanently ... -
ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…
... the middle, filled with thin vertical red lines. This flashes up for ... -
Sinclair QL-Black and white lines displayCould be obtaining an QL soon,problem is according to seller it display black and white lines on screen,looking at service manual here- [url]http://w…
... it display black and white lines on screen,looking at service ... -
Re: Best British comedy programme.A couple of days ago I was discussing comedy programs at work, and the subject came around to the BBC's national competition from three or four years…
... Birds of a Feather
39 Bread
40 Hi-De ... the Lyons
98 Marriage Lines
99 A Sharp Intake ... -
Help I killed my +3...I replaced the drive belt on my +3 and gave drive quick service. Upon booting everything was fine and one of the discs I bought went in and I heard…
... get is black and white vertical stripes with a couple of ... reset button and the white lines change to yellow.
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... scrolls the screen down 8 lines then repeats the process with ... ,34,35,36,37,38,39,40,41,42,43,44 ... ,34,35,36,37,38,39,40,41,42,43,44 ... 34,35,36,37,38,39,40,41,42,43,44 ... 34,35,36,37,38,39,40,41,42,43,44 ... 34,35,36,37,38,39,40,41,42,43,44 ... 34,35,36,37,38,39,40,41,42,43,44 ...3 lines of funHello! I'm looking for a tattoo to remember forever our fabulous 8 bit era. A part the pictures I posted here [url]http://www.worldofspectrum.org/for…
... suggest me 2 or 3 lines of BASIC code (short please ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
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(Thick black and white vertical bars, but almost always with ... connectivity of the data bus lines between the CPU and ROM ... waves on all data bus lines at the CPU.
Famous lines from filmsThe 'Favourite James Bond' thread put me in a Bond type mood, and a workmate just asked me if I'd done something and I responded "Do you expect me to…
... suggest any more well known lines and responses?A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... example. It's about 340 lines and includes comments, assembler code ... pixels
uchar dy; // signed vertical speed in pixels
};
editing strings with INPUT LINEHere's the latest in my unpredictable series of utility routines. This one I needed for the SAGE game editor; it emulates INPUT LINE l$ but with the …
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The vertical cursor enhancement from "joining lines of BASIC" (but ... ;reset lower screen to 2 lines
call $0d6e ;CLS_LOWER
Scrimpy screensHere's a question - how small a window can you get away with as a playing area for an arcade/action game before anyone notices? From the very earlie…
... good aspect ratio for a vertical shmup:
[IMG]http://www ... score display of only 4 lines, but it does look like ...Spectrum 48K help neededI hav got an old Specrtum 48K issue 3. When I plug-in power connector it doesn't show the home screen (c) Sinclair.... From about 50 times trying to …
... . Mostly I have white-black vertical bars.
How can I ... cold. I have checked voltage lines (+5, -5, +12) and ther ...48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…
... think this is the "wavy lines across screen" fault I read ... electrolytic capacitor to see if lines disappear. If so change that ...Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... the screen, and stray lines and colours. The machine ... but not the lines.
Change the electrolytics - lines gone now. ... by black and white vertical stripes, one character wide ... br /> Edit: All address lines, data lines and resistors therein are verified ...Vertical Shoot'em Up's: Humans.Ok. This topic is about those vertical shoot'em up's in which you control a human. Why? Because I say so. It's just a nitpicking categorization. And…
... . This topic is about those vertical shoot'em up's in ...Vertical Shoot'em Up's: Ground Vehicles.Ok, the topic says it all. We're talking about tanks, jeeps, cars, pogo sticks and futuristic vehicles (as in Marauder). There's no really substanti…
... in the gameplay from the Vertical Shoot'em Up's with ... is among the finest Vertical (and non-vertical) Shoot'em Up's ...Vertical Shoot'em Up's: Spacecrafts.what's missing? for updated lists look [URL="https://sites.google.com/site/concealedwords/home/zxspectrumgames/vertical-shoot-em-up-s"]here[/URL]. …
... .com/site/concealedwords/home/zxspectrumgames/vertical-shoot-em-up-s"]here ...The great 128k ConversionWell, I am not sure if it is going to be great. Hopefully it will! This evening, I set about getting my Issue 6A Spectrum Plus working. I suspecte…
... the voltage levels tested. All lines were Ok.
I ... about the electrolytics. There were vertical bars moving horizontally across the ...Bottom 4 lines of the screen fileI'm wanting to save the bottom 4 lines of the display memory (AT 20,0 to #0; AT 1,31) 23168 is the start of the attributes and its length will be 32…
... to save the bottom 4 lines of the display memory (AT ...Spectrum 128K +2 (grey) faulty screenHi. Just got untested +2. Now I only get picture like this (Black screen, with two vertical very thin white lines): [url]http://aijaa.com/Nk93Ub[…
... (Black screen, with two vertical very thin white lines):
[url ...Yet another glitchy graphics 48kHeyo, I'm new both to the forums (sorry if this is the wrong forum) and to Spectra I'm afraid, picked up a 48k from a steam fair sale thingy (not th…
... flashing "K" to drawing vertical red lines on an otherwise blank screen ... try looking at the data lines with an oscilloscope yet but ...Spectrum +2A problemWorking my way through a new influx of greys and blacks i came across one thats got me a little stumped, on boot it goes straight to vertical black a…
... it goes straight to vertical black and white lines, nothing ive tried ...Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... is noticeably slower than the vertical one because it has to ... IX,DE ; so all these lines can go
LD DE ...Upper RAM replacement module issues with the DivideI got my new upper ram replacement module from Zorn yesterday and seem to be having some issues. When the machine is without the Divide it boots up …
... the machine I get border lines like the machine is saving ... black border and paper with vertical white lines on the paper area ...
