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Contended memory article on WikipediaYeah, apparently there's one. https://en.m.wikipedia.org/wiki/ZX_Spectrum_Contended_Memory [quote] However, the ULA must wait for a Z80 read or wr…
... was generated by the display vertical refresh signal. This ensures that ... -
Save video directly from ZX 48K hardwareWhat is the best "proven" way (bets quality) to acquire video from a Speccy 48K ? I have converted the the TV out into AV,,with the usual mod (wit…
... I don't see any vertical shaking, but on the captured ... -
48k spectrum problems at bootHey guys so my 48k Specfy, Issue 3B is having some issues. They're not entirely consistent but the majority of the time (95%) it presents itself as m…
... bands of video noise with vertical black and white banding and ... -
z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…
... pixels
char dy; // signed vertical speed in pixels
unsigned ... -
Key repeat weirdness with EI & IYI finally (after 35 years!) decided to write something a) for 48k speccy b) in z80 assembler. It's been over 20 years since I've written anything in …
... HALT instruction to wait for vertical retrace. And HALT does not ... /> Or can I wait for vertical retrace without HALT & EI ... -
iPhone 5 screen fading with stripesHallo folks :) [b]Disclaimer: yes, I've googled the problem and it looks like it's a knackered 'digitizer'/screen issue but just thought I'd check…
... getting a faded screen with vertical stripes. Everything works fine in ... -
Need help from people with a 48K/128K/+2 (not +2A/+3)Scared ya, didn’t I? Well, this one is very simple and not as involved as [url="https://www.worldofspectrum.org/forums/discussion/55142/need-help-fro…
... appear anywhere else on the vertical axis, especially above the ground ... -
Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... getting a blue and white vertical candy-striped pattern. Occasionally I ... -
FUSE 1.4.0 and Spectranet how do you use it ?Hi I just thought I'd give this a go. But I don't understand how it's supposed to work when I enable Spectranet in the peripherals menu it asks me …
... just see blue an cyan vertical bars and don't get ... -
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... : control number
;Col 2: vertical coord
;Col 3: INK ... /> ld a,(ix+1) ;? down (vertical coordinate)
rst $10
ZX DEV 2017 RetroforceAlthough a little early, considering the January deadline, we have finished our competition entry for the 2017 ZX DEV conversion competition. Our gam…
... called "RetroForce", and is a vertical shooter, inspired in part by ...Some tips to play Army Moves part 1Well, here's what I found out while trying to finish the game. [b]General comments[/b] - Like many other games by spanish companies, even if yo…
... over jeeps or on your vertical when you are very close ... down planes, move on your vertical to dodge them.
GZX emulator source code publishedHi, GZX is the name of my own personal ZX Spectrum emulator that I wrote and have been using for my needs. I just wanted to let you know that I publ…
... /> - Experimental support or Spec256, double-vertical-res
- Emulate built-in ...ZX Spectrum Issue 2 - 12V badHey there, I'm currently attempting to fix a ZX Spectrum issue 2 that I recieved. Overall the machine was generally working when I recieved it, bu…
... ), just slightly intensity of the vertical lines. Turned out the 12V ...Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…
... Issue 2 board which shows vertical character wobble. This
... screen.
The vertical wobble doesn't correlate with ... discernible
effect on the vertical wobble. VR1 & 2 ... />
Apart from the vertical wobble the board now works ...Broken Issue 2 - likely culpritsI've just got hold of an issue 2 spectrum with an interesting layout (heatsink is vertical and goes down to the speaker, some variable resistors and …
... an interesting layout (heatsink is vertical and goes down to the ...PROJECT ZX II - New Exclusive Game! Sir Clive is Back!!!Sir Clive Sinclair is back!!! Following years of contentness after inventing his 128k+1 toastrack Spectrum which was his way of appologising to the …
... this mad hovering run'n shmup PC game.
You can ...1st steps in animation Having finally resurrected my familiar old graphics programs, chief amongst which is DPaint Animation, I was a little taken aback to reali…
... decided to try a sinuous vertical snake like motion. Starting with ...Time travelling, inter-galactic communication with a BBC MicroJust listened to this podcast of the best story ever, to do with time travel and inter galactic communication. It happened around 1984, to a couple …
... from a book entitled ,"The Vertical Plane". I recently discovered Mysterious ...Better graphic in new ZX gamesLCD TV (ideally full hd) used with ZX Spectrum enable using new graphic modes with 2x higher vertical resolution, more colors and without attribute c…
... graphic modes with 2x higher vertical resolution, more colors and without ...ZX graphic editor for HI-RES mode / gigascreen / LCD TVI have idea for new ZX graphic editor. For example MULTIARTIST support gigascreen mode (interlace), but show stable mixed colors. Reality is differen…
... in interlaces mode 2x increase vertical resolution of ZX graphic and ...Harlequin G Video problem.Hi everyone! Last week I finished putting my Harlequin version G kit together. Nervously I tested it but it was only a partial succes. The keyboard…
... but half the picture in vertical stripes is garbled. I tried ...For the Love of ElectronicsBesides the ZX Spectrum, what other pieces of electronic tech, new or old, do you have that has garnered similar levels of affection? For me it wo…
... its switchable head-shells ,adjustable vertical tracking angle (VTA), and that ...Spectrum 48K / composite mod / LCD TV: voltages out of the ULAHello Spectrum World I have juste bought again my first computer on ebay... a Speccy 48k issue 2 with a 5C112E-2 ULA. Just had to replace TR4 and …
... output because:
a) the vertical sync is much shorter than ... generate color bursts even during vertical sync (the 250us long sync ...Dangan GB – a new Game Boy game from snorpung & nordloef[img]https://i.imgur.com/do6N4wu.png[/img] [code] Dangan GB is a short simplistic boss-rush/bullet-hell shmup released for the Game Boy to celeb…
... simplistic boss-rush/bullet-hell shmup released
for the Game ...new game boy DanganDangan GB is a short simplistic boss-rush/bullet-hell shmup released for the Game Boy to celebrate the console's 30th anniversary. Some features: …
... simplistic boss-rush/bullet-hell shmup released for the Game Boy ...ZEsarUX Beta 7.2-RCHi I have uploaded a new ZEsarUX Beta version: 7.2 Release Candidate! Next version will be final stable :) You can download it from: https://g…
... error managing TBBlue Layer 2 vertical scroll
Fixed triggering "opcode ...Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…
... , and optimal purely horizontal and vertical lines, but I'd like ...ZEsarUX stable 7.2Hi! I have uploaded a new stable ZEsarUX version 7.2! You must go to the Releases section on the GitHub project to download It, as usual: htt…
... /> -Fixed error managing Layer 2 vertical scroll
-Fixed audio bug ...Grey +2 with lines on some games on RGB connectionHi Everyone, Is it OK if I ask a question? I dug my +2 out of the loft after far too many years about a month ago, and I have finally got it ba…
... some of my games show vertical lines down the screen, really ...
