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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 …
... because of that I use HALT instruction to wait for vertical ... retrace. And HALT does not seem to work ... wait for vertical retrace without HALT & EI?
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…
... at that level. It may flicker occasionally when a sound is ...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…
... one-pixel-thick black stripes flicker across the tiles. I'm ...Memory Contention: A Hypothetical Fix?I have just had this crazy thought: If one were to wire an additional memory chip, say a 6264 8Kx8 SRAM, in parallel with the main memory so that it …
... ULA is reading from, would halt the Z80 only if the ...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…
... ;a short pause
3$ halt ;before
djnz 3$ ;leaving ...No-tearing (“vsync”) Full Screen FadeSeeing as most screen fades exhibit visible tearing, I wrote my own routine which does away with that problem. Simple, effective, short, and fully re…
... of attr area
halt ;wait for beginning of frame ...How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…
... is causing the character to flicker, is there a way to ...Z80, and 6502, in comparisonI was wondering about how each of these compared in terms of performance. The Commodore 64 had a 6502 @ 1MHz, and graphics processor VIC which took …
... uses a screen backbuffer, the flicker on the C64 and BBC ...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…
... multiple phases
no bullet flicker
no slowdown
no ...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: …
... multiple phases
no bullet flicker
no slowdown
no ...New game: SOPHIA II[img]http://www.alessandrogrussu.it/zx/Sophia2.png[/img] Hi fellas! After the [url=https://www.worldofspectrum.org/forums/discussion/56771/comi…
... order to avoid some occasional flicker to white of the colored ...ZEsarUX 8.1 stableHi! I've uploaded a new ZEsarUX 8.1 stable version. Go to the github released webpage to download it: https://github.com/chernandezba/zesaru…
...
-added copper opcodes NOOP, HALT
-increased tbblue.mmc MMC ...+2B: where's the tape signal gone?So, this is what I really came here for today... I've got two +2Bs, one with an issue 1 board and some extra soldered wires, and one with an issue…
... border colours don't even flicker when Tape Loader is selected ...Moritz The Striker for the 48k SpectrumDownload: https://www.dropbox.com/s/bbb7n2ipv7ed4k1/Moritz%20The%20Striker%20-%2048k%20Release.zip?fbclid=IwAR2ZdaHdIFQEKGt5raugVaxeudTcQDJT-nQgSk…
... please STOP the tape or halt the tape image if using ...why am i getting b integer out of range in this code?ive tried running this in spin but thats what i get [code]main org 40000; ; We want a black screen. ld a,71 ; white ink (7) on black paper (0…
... /> call splayr ; show player.
halt ; delay.
; Jump back to ...this code wont give me a random starfieldim using a peice of code that ive copied from a book, ignore most of it as it is redundant. for some reason i get a strange random starfield instead …
... /> call splayr ; show player.
halt ; delay.
; Jump back to ...IM2 on a 128k SpectrumHello: I have found another article on IM2 found in Personal Computer News, Issue 90. In the article "Face up to the Time", I typed up the code (…
How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)[b]How to write a simple C/asm horizontal scrolling game[/b] [b]Note:[/b] This tutorial has multiple parts... I am still writing but this first pa…
... /> scroll_left();
#asm
halt
#endasm
}
HALT instruction, which does nothing much ...New edition of LOST IN MY SPECTRUM and other newsHi all, my very first game, [i]Lost In My Spectrum, [/i]has been updated to version 2.1. What's new: time runs a little slower; when you lose a…
... the current level; a slight flicker of sprites that could occur ...specie external keyboard - revision one -[img]https://photos.app.goo.gl/pqeYpXnLqTwYkLvKA[/img] revision one of my external keyboard ... wow it actually worked after a little bit of crash…
... . ???. thinking i may have to halt it as soon as it ...Spud v0.306I hid this in another thread so I suppose I should put it here. Spud v0.306 Read the Changelog for the all exciting new stuff that won't work p…
... than just files).
Proper Halt emulation (who would have thought ...Zero v0.8Pigs can apparently fly because it's the v0.8 update of Zero that no one asked for but is out for public consumption anyway. Grab it [url="https:/…
... snapshot (woody).
- Fixed incorrect HALT implementation (ZjoyKiler).
- Fixed incorrect ...Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... just draw everything after the halt, update, then wait for the ...Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... /> call prompt
.loop
halt
call scankeys
call ...spectrum mode smiilar to c64?i dont know much about machine code assembler routines, zilch actually to be honest, ive always fiddled with basic on my spectrum, only doing maybe a…
... Mortal Kombat Demo despite the flicker. Still I think it was ...WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…
... :
ORG 50000
HALT ;synchronize with interrupts
LD ...
OUT (254),A
HALT ;wait 20ms
LD A ...Microdrive woesHi there! Just managed to pick up a 2nd hand Microdrive and interface one... Came with an introductory program which doesn't seem to load. Since its…
... PC is stuck at the HALT instruction at #1303 in the ...Laser Squad scenariosDoes anyone know how to load up Laser Squad's last 2 scenarios (6&7) into Spectaculator? The menu only allows loads of scenarios as far as Paradise V…
Got it, got the emulator. Works fine once I sorted out the screen flicker. A bit of practice with the emulator's controls and away we go! Thanks again, Alessandro.
Cheers
Drax
