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New game: Nanako Descends to HellJust a bit over two weeks after their first game, The Mojon Twins strikes again with a new game for Spectrum 128k and Amstrad CPC: [url]http://www.m…
... and how to create an IM2 table using memset().< ... allows delay by an exact number of T-states. It may give ... in milliseconds. I don't think these were available in ... is that I didn't have an internet connection for the ... I was doing, but didn't work:
... -
Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…
... 1 bit instead of three. An easy mod.).
I ... money on the number of T-states from the interrupt to the ... line counter resets...... I can't see them changing the contention ... -
Program Counter question - please readSorry if this is in the wrong forum, but please read it through anyway - see on the FUSE PSP emulator I asked the author if he'd add an option to pri…
... fastest Z80 instructions require 4 T-states.[/QUOTE]
On ... given one of those 3500000 T-states, even though at most ... large number of states. You'd just need an enormous computer ... possible. Only for machines with an unlimited amount of storage does ... -
Program Counter question - please readSorry if this is in the wrong forum, but please read it through anyway - see on the FUSE PSP emulator I asked the author if he'd add an option to pri…
... given one of those 3500000 T-states, even though at most it ... can still catch every PC value. it doesn't matter if it ... -
Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... compiled one. The ROM is an interpreter. Consider this example:
t-states. It also performs some syntax ... I've just invented) is an action that take the next ... FP CALC (mine is just an implementation of Bresenham's algorithm ... -
Graphics mode:64x48x8 colors possible on Spectrum?That multicolor River Raid demo inspired me to make this question: If we filled all the screen with chessboard pattern [code] 00001111 00001111 00…
... 128 mode only with attributes every 4 pixel rows taken alternately ... virtual thumb for 4*224 T states, the program calls a sequence ... -
Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... you swap screen just before every fifth line the screendisplay ... only takes a few T-states
and this ... to you win 106 T-states
in a line ... NOP
(total 106 T-states)
[/code]
... even if you don't
understand MC ... -
Graphics mode:64x48x8 colors possible on Spectrum?That multicolor River Raid demo inspired me to make this question: If we filled all the screen with chessboard pattern [code] 00001111 00001111 00…
... 128 mode only with attributes every 4 pixel rows taken alternately ... virtual thumb for 4*224 T states, the program calls a sequence ... -
Tips on (dis-)assembling Z80 instructionsedit: Naturally I managed to post this in the wrong forum. I'd much appreciate it if any moderator would move it to the development section. For the…
... that group of states which describes an instruction is pretty ... etc - note the terminating space) every other state is label or ... of posible register combinations or an expression.
basically you ... set of all possible states and an undefined state (label, ... -
Reading from the 128 Serial PortDon't shout at me if this is a silly question. I have Googled extensively, and searched the forums, but I can't find anything discussing what seems t…
115200 Baud is indeed possible for transferring files from PC to Spectrum.
I used a test file holding 6912 times CHR$ 51, and "Splitcom" found at:
[url]www.propix.hu/share/SplitCom/SplitCom.html[/url]
Baud rate 115200, 8 data bits, no ... -
Question about ZX Spectrum AY interfacesI got this information from Mike, author of EigthyOne: [QUOTE]128k spectrum 1.7734 MHz Timex 1.764 MHz ZON-X 1.625 MHz Fuller 1.625 MHz QuickSilva 0…
... up a couple of thousand T-states in processor time, so the ... 's execution speed is not an issue (unless you want to ... barely match it up to an actual musical note when writing ... -
15 years of waitingJust wondered if anyone had waited an exceptionaly long time to play an highly anticipated new game release only to have it gather dust on a shelf un…
... /> Same here, I don't even know when and where ... Even though I could using an emulator, but somehow I could ... about 2 years, and every couple of months we could ... (in fact I don't even have an ebay account to this ... are for platforms I don't even have ... PSP, PS3 ... -
wavide: WAV player for DivIDEPrompted by an email from zxbruno yesterday, cobbled together much quicker than expected... [url]ftp://ftp.untergrund.net/users/gasman/zx/wavide/[/u…
... perform the 'ready' check after every sector when you do a ... . Of course, this bug won't show up on Fuse, because ... Fuse to introduce a few t-states of delay, so I can ... 8-bit D/A wouldn't actually need a volume table ... -
The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…
... the precise 224 T-state line copy function. But an uncontended +3 ... it only needs another 4 T-States to stabilise it for this ... this mean you [I]haven't[/I] seen a problem on ... -
Has any programmers recently pushed the spectrum to the limits?Hi there. Ive just discovered this great forum and I was brought up with the speccy 16,48 and then 128k. Im just wanting to know if there are any re…
... /arbitrary characters if you don't mind storing the attributes directly ... instructions holding the attributes aren't next to each other in ... at 14164 t-states
LD SP, 5820H ; Load the with an address ... -
Has any programmers recently pushed the spectrum to the limits?Hi there. Ive just discovered this great forum and I was brought up with the speccy 16,48 and then 128k. Im just wanting to know if there are any re…
... my interest. I don't know if you're ... using PASMO as an assembler, but that can ... Now an LD RR,NN instruction is still 10 T-states, the ... Crisis' card game. For an arcade game, I'd weigh ... If speed wasn't hugely critical, an address translation table could ... -
you know you are old whenan all nighter means you went all night without having to get up to take a piss. or that you have to use invincibility (infinite lives wasn't enough…
... little bastards round here wouldn't piss me off so much ... them out of the shit every time they fuck up, and ... a year cos' she can't stop eating lortabs (yank equivalent ... for granted at every opportunity.
She's an ungrateful little ... -
you know you are old whenan all nighter means you went all night without having to get up to take a piss. or that you have to use invincibility (infinite lives wasn't enough…
... little bastards round here wouldn't piss me off so much ... a year cos' she can't stop eating lortabs (yank equivalent ... for granted at every opportunity.
She's an ungrateful little ... =dm_boozefreek;376491]Yes! It doesn't taste good![/QUOTE]
in ... -
We British deserve everything we get"[B]The Lockerbie bomber is to be released on compassionate grounds, the Scottish Government has announced. Abdelbaset Ali al-Megrahi, 57, was jaile…
... practical grounds, in the United States, for example, it is more ... "a tool", it isn't, it's an action not a thing ... car analogies are talking about an inanimate object. The death penalty ... murder rate in the United States, for example, is much higher ... -
Battle of the retro songs!I present you: The new release: Aqua - "Back To The '80s" [youtube]kw5s3CB_1pE[/youtube] The previous king of the retro songs: Bowling For Soup - …
... which have raster interrupts and an AY- with stunning results. That ... worked for Ocean and was an MD at Software Creations).
t-states!
[url]http://www ... -
Battle of the retro songs!I present you: The new release: Aqua - "Back To The '80s" [youtube]kw5s3CB_1pE[/youtube] The previous king of the retro songs: Bowling For Soup - …
... a sound routine after every so many t-states is one thing! But ... -
Spectrum Blog - In spanish!For those who speak or understand spanish, I started a blog about the speccy. It's mostly based on reviews, but I plan to write other stuff for the Z…
... after all. We won't all agree on everything! ... so I didn't feel like an imperialist when on ... grade students who couldn't even describe what they had ... no emphasis - it wasn't even mentioned - was given on ... watch an hour TV programmes on TVE (rtve.es) every day ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... paging within a few thousand t-states of a reset, or ... . This is why I don't do hardware :-)
an SCR with no problems) ... and saving an SCR has just trashed a ... [QUOTE=cheveron;385030]
Haven't managed to get it to ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... paging within a few thousand t-states of a reset, or something ... 8 volts or so for an NMOS Z80, the Z80 will ... the paging registers, they won't do anything. Because the ... estimate at least thousands of T-states) when the Z80's reset ... at least 100,000 T-states! -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... - so that LDI was 4 t-states instead of 2, or something ... can't really remember.[/QUOTE]
Everything runs in an exact ... multiple of 4 t-states. There's no ... penalty on LDI, as that takes 16 states ... -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... ]Everything runs in an exact multiple of 4 t-states. There's no ... penalty on LDI, as that takes 16 states ... . Ah well, it's not an instruction you should be using ... -
Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …
... ), during 128 out of every 228 CPU T states (1 TV
line ... ), and during 192 out of every ... access to contended RAM in every 8 T states. [b]The CPU is ...
controlled by introducing wait states.[/b ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... Adding new features wasn't important to its ongoing popularity ... the 128k wasn't much of an improvement over its ... 128K was that it didn't have that [I]killer ... sales. There really wasn't a game that made you ... through the 128K era. Every game that game out for ... -
Adjusting your code for screen refreshingOk, I'm aware that I should know it already after writing 5 Spectrum games in machine code but interrupts and screen refreshes were always my weaker …
... itself takes 45 T-states each round, this leaves 1719 T-states
... are ment only to give an indication of the times,
T-states. So some 15600 T-states pass before data ... executed first, taking some 1800 T-states away. Leaving around 13500 for ...
