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Flicker on my scrolling demo, any ideas?I have created a scrolling demo downloadable from [url="http://www.peargames.co.uk/downloads/scroll.z80"]http://www.peargames.co.uk/downloads/scroll.…
... manipulation, and runs at every interrupt, and takes 1/25 second ... -
FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…
... using the NMI or other interrupt source. I can't remember ... -
Lost for WordsWhen you are lost for words then this Euphemism Generator may be the thing you need [url="http://walkingdead.net/perl/euphemism"]http://walkingdead.…
... as I find that they interrupt the flow of the rappin ... -
Beginner InfoI have trying to find some hardware information for use with assembly coding but havn't had much luck. For instance. How do I redirect the vertical …
... I redirect the vertical blank interrupt so it points as my ... -
two areas of display[quote]Since Timex and ZX Spectrum 128K have two areas from which the screen can be displayed, there's a possibility to switch the areas at every fra…
... the areas at every frame interrupt (50Hz).[/quote]
I ... -
Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…
The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…
... best solution is having an interrupt service routine which calls the ...Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... be calling +3DOS and running interrupt code here, so i think ...Help with creating .ayI am trying to create an .AY file for Sidewalk. Now this is the first time I am trying to do anything like this, so please bear with me. Using Spin's…
... to make sure a correct interrupt handler is called and sets ... =0
INIT=#c5fc
INTERRUPT=#cf7d
SongLength=65535
Musician WantedI am looking for an ay musician for a game being written now. The project is far enough along that this is probably a good time to start on the musi…
... with the player in the interrupt routine, let me know!LiberatedI was just browsing around at "stuff" and spotted the [URL=http://www.worldofspectrum.org/infoseekid.cgi?id=1000227]Liberator[/URL], a hardware wotsi…
... was it perhaps a hardware interrupt that was triggered at different ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... and the Z80 can generate interrupt for the first time at ...50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…
Spectrum ethernet... step 1.1Yeah, a tenth of a step :-) Here's the W5100 board up and WORKING: [url]http://www.alioth.net/tmp/w5100-online.jpg[/url] This is called the "Get Th…
... can be used as an interrupt controller, and it has a ...Multi-tasking OS on the Spectrum?Do you think it is possible to build a multi-tasking operating system on the Spectrum? That is, most important the ability to have several task run…
... uses some kind of timed interrupt to get back control from ...It's a trap!So I got a CPLD (not the eventual one I want to use for the ethernet project - rather, one I actually have here and now, an XC9536 in a PLCC44). And…
... *our* device has caused an interrupt (otherwise ignored)
- 0x0066 - only ...Emulators on the ZX SpectrumHaving released a Spectrum 16K emulator for Spectrum 48/128 machines as part of CCG2008, I was wondering if anybody knows of any emulators which actu…
... just seems to lockup with interrupt problems quite often... :confused:
Spin problems/issuesI am running Spin 0.666 and have noticed a few issues (some are bugs, some might be just me). I am using Vista sp1 (yeah I know!), and I've seen Dunn…
... the register window. If you interrupt the Z80 at a random ...Windows - SafestyleI love getting older, having to buy things like new windows, oh great ! Anyway had one company round just for a rough quote (2,200), my missus rang …
... and i kept trying to interrupt the guy but boy he ...InterruptsI need help emulating interrupts. My z80 core currently emulates all un-prefixed opcodes and the CB opcodes. I thought I would start on emulating co…
... )? Do I check for an interrupt after each instruction execution in ... my main loop? When an interrupt occurs, what *actually* happens - i ...Timing... in the CSS faqI was looking at the CSS faq for something completely unrelated and noticed: [quote] Then the 192 screen+border lines are displayed, followed by 56 …
... means that the '50 Hz' interrupt is actually a 3.5MHz ... /69888=50.08 Hz interrupt. This fact can be seen ... Spectrum, the frequency of the interrupt varies slightly as the Spectrum ...microdrive problems and interface 1I am having problems with microdrive. Whatever I try, the motor starts for a second or two and error message shows up "microdrive not present". If I…
... minute or so, had to interrupt by turning off power) and ...[NO NAME PROJECT] contributionhi to all. im writting new-super-mega game. it will be finished this century. :) so what is going on ? in the game (an arcade adventure) player can …
... for your code
-interrupt can't be hi-jacked ...Watching screen while debugging???I'll try to state my problem clearly, but I don't know if I'll succeed ..:) I load a Spectrum program into emulator (it doesn't matter which one at …
... won't be waiting for interrupt (and executing next instructions meanwhile ...Machine code and Basic system variablesSpectrum system variables (I mean 48KB model) are essential for Basic. But what if I started my machine code program and it's never going to return t…
... , but I guess that the interrupt code uses system variables somehow ...Interrupts - been a while !Not sure if this is the right place for this (1st post on WOS, but been a speccy user since Dec'84 :-o (yes I am that old ! :p) ), But I can't for …
... remember how to set up Interrupt Mode 2 based on that ...AY tracker routineHi. Yesterday i played with some ay tracks and was surprised how big are tracker routines and music data (over 1.5KB for Pro Tracker routine and 4-6 …
... more than 15000 T every interrupt (i estimate that Pro Tracker ...ZXSpin for Spectrum DevelopmentI found this handy guide to setting up a cross-platform development environment for the Spectrum: [URL="http://zxspectrumdev.blogspot.com/2009/01/set…
... remember how to set up interrupt routines. I think I've ...
