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Uridium possible with more colour??Having seen the MSX version of Uridium mentioned in another thread I wondered if the Spectrum could produce anything similiar, and had a go at a mock…
... have precise control over the timing beforehand. But it might end ... with your program being "chased by the raster" .
Its that ... possible to know where the raster had reached in the ATTR ... -
Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…
... contended RAM to keep the timing constant.
It's ... rows just ahead of the raster by PUSHing the same colour, timed ... that it collides with the raster just on the right row ... row at that point, the raster can carry on showing that ... -
No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…
... to generate the entire scanline, by reading the line later, (when ... up to the raster still work. But offset your sync signals so ... -
Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... , might come handy for raster beam/multicolor timing and such
; by Hikaru in 2015
; Public ... ;10 subtract the time taken by the routine itself excl. delays ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... quite. I fixed them all by measuring where in the frame ... cannot be reliably replaced with timing routine with no flicker...
sync at approx ~14500 T-states ... -
ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…
... size restrictions are not placed by the sprite engine itself.
sync with the raster.
z88dk is ... -
What is the maximum fps the spectrum can achieve?I have been doing some reading and from what I understand the Spectrum outputs a PAL signal, but that means it will display @50fps or @25fps? If t…
... the technique of chasing the raster, the program can either be ... basically the same method. The sync signals tell the display when ... been drawn, a vertical sync / field sync signals to the display that ... program has the exact right timing, it can either update the ... -
KLIK: Z80 snapshot to screenshot converterWith most Spectrum emulators, you can save current game screen in original ".SCR" format. This will give you a 100% perfect copy of the Spectrum scre…
... was stopped immediately after a raster scan execution, there's a ... writing an emulator I'd sync taking a screenshot with the ... you execute the code step by step, sometimes you set a ... run an extra frame to sync? Or should it refuse to ... -
KLIK: Z80 snapshot to screenshot converterWith most Spectrum emulators, you can save current game screen in original ".SCR" format. This will give you a 100% perfect copy of the Spectrum scre…
... an emulator I'd sync taking a screenshot with ... due to be output by the ULA emulator (or ... except on a game-by-game basis, for reasons ... output isn't represented by memory contents at a given ... represented by external knowledge of what the virtual raster beam ... -
How do emulators make code appears as running at 3.5Mhz?Decent Z80 emulators on github return t-states after executing an instruction, giving you the ability to emulate Speccy relatively well. But there ar…
... well.
For frame timing, emulate enough T-States to ... per second, so divide that by 50 - not actually a round ... will not give you accurate timing (you want 20ms per frame ... 200ms) you should try to sync to the sound buffer play ... -
Animated loading screensDoes anyone know how many spectrum games had an animated loading screen? The only ones i can remember are Technician Ted and I think, Manic Miner.
... one - that showed the raster bars in a small window ... [quote="Hikaru;970482"]
Zythum, by Mirrorsoft.[/quote]
[quote="TheShich ... eyes that change colour in sync with the loading sounds, ... way through, multi-coloured raster bars appear and the eyes ... -
Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …
... track audio loop with some timing and r/w control as ... bits being pushed out by the controller. Those sync bytes at the ... -
Who's NEXT?How about having a category just for Spectrum NEXT owners? I got mine on Monday, its the original issue, plain jane and quite enough for me to ge…
... likely it can't sync to video below 60Hz ... Some VGA monitors can sync close to 50Hz but ... runs faster by that amount. All the internal timing is ... will wreck the careful timing relationship between z80 and ... is incompatible to spectrum timing. Note that the Next ... -
5C Horizontal timing vs 6C horizontal timing.Hi all, Just considering the timing difference in the video signal between the 5C and the 6C where the 6C ULA seems to have 50% longer horizontal …
... resistor values.
The timing of the colour burst part ... the start of the horizontal sync pulse slightly, but left it ... the end of the H-sync pulse and the start of ... with the colour mixing done by IC14 (LM1889). Issue 3 boards ... -
Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... (if wanted), horizontal and vertical sync. signals and provides light pen ... high speed with signal critical timing and complex circuitry are hard ... risky to reduce the complexity by using a 6845 and then ... -
What is VSYNC-based sound on ZX80/81?An Z81 emulator demo with quite impressive sound has this explanation -- "manipulating the vertical sync to create sound with the TV buzz". This is …
The TV/video sync signals are controlled by the Z80 processor in ZX80 ... all over the sync signals, as all sync timing is done by the ZX ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... fast the code runs
TIMING EQU 0
; this points ...
mainloop:
IF TIMING
ld a, (bdr_colour)
TIMING EQU 1 the raster does not even ... but you can change this by changing SCRBUF_BASEADDR (you have to ... -
Visible-Z80 - VISZ80 - by Miklos Patrubany Hi All ! Visible-Z80 - VISZ80 - by Miklos Patrubany Does anyone have this program ? Please help me. I want to learn Z80 and Assambler on Z8…
... !
Visible-Z80 - VISZ80 - by Miklos Patrubany
Does ... -
Games UNDERated by magazinesYep, a slight twist on the previous topic. Which were the games you thought were underrated by mags, but were really much better in your opinion. …
... games you thought were underrated by mags, but were really much ... -
Obliterate - released by The Sun newspaper?Anyone know anything about this game? It was launched by The Sun newspaper in 1982 in connection with the Falklands War. The game is called 'Oblitera…
... this game? It was launched by The Sun newspaper in 1982 ... -
BASIC-code challengeFor the BASIC-coders among us. There is a number that has following aspects. divided by 16 remains 15 divided by 15 remains 14 divided by 14 remain…
... following aspects.
divided by 16 remains 15
divided ... by 15 remains 14
divided by 14 remains 13 ...
divided by 13 remains ... BASIC-program wins.
Timing will be controlled by me.
I ... -
Rare bought by MicrosoftHi all, I just heard that Rare was just bought by Microsoft. I expect that means that any chance we ever had of being legally allowed to distribute …
Hi all,
I just heard that Rare was just bought by Microsoft. I expect that means that any chance we ever had of being legally allowed to distribute the old Ultimate games has now gone out the window.
Necros. -
SPIN-Lite (Working Title) test availableHi all, I've been having a break from SPIN, pursuing my original goal of a BASIC interpreter. Well, I took SPIN's main core and hacked it around…
... 48k emulation, and has no timing information built in. The goal ... />
[ This Message was edited by: Dunny on 2003-01-01 ... -
Run BASIC program by R. USR xxxxxGuys, please help. Suppose I have BASIC program in my Spectrum 48K starting with line 10. I'd like to start it by RANDOMIZE USR xxxxx. Which paramete…
... 'd like to start it by RANDOMIZE USR xxxxx. Which parameters ... -
main menu music in Hell Master by Paul Nikitin.main menu music in Hell Master by Paul Nikitin. (this is a self-made little game) What music is it??? You will exactly remember it...
main menu music in Hell Master by Paul Nikitin. (this is a self-made little game)
What music is it??? You will exactly remember it... -
Follow up from "name the game" by bjohnnybravoBjohnnybravo posted the following:- OK... this one can be hard as I don't remember very much... i think u were some adventurer, wandering around som…
... i thought it was written by Don Priestly. A search on ...
