-
Data bus at interrupt timeIt is "well known" that some peripherals can put values other than 0xff on the data bus at interrupt time, thus meaning that IM2 is slightly more fid…
... of 255 whenever the ULA interrupts. This is an odd value ... defeats the purpose of vectored interrupts as it is no longer ... that will generate two different interrupts. One interrupt is generated when ... -
Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …
... routine - one for drawing on interrupts, that uses the stack pointer ... -
Original Imaginative PlayableWhich Spectrum games fit all 3 of these criteria? [B]Original[/B] - Games that were out first or most famous for their Spectrum version [B]AND[/B] o…
I think Bounder, manic miner, knightlore (somebody had to say it!), and Tir Na Nog fit the bill -
Original Imaginative PlayableWhich Spectrum games fit all 3 of these criteria? [B]Original[/B] - Games that were out first or most famous for their Spectrum version [B]AND[/B] o…
... ]I think Bounder, manic miner, knightlore (somebody had to say it ... -
A tattoo with "Sinclair ZX Spectrum" :)[url]http://8bitcollective.com/images/TransparentPurpleTrip/ZX+Spectrum+tattoo/[/url] I thought I'm a big fan of Spectrum but I must admit I'm not s…
The knightlore 'wulf' would be a good one to get done..not to geeky as to the none nerds they wouldn't know what it was. -
** New Game In Development **As one or two of you may already know, Jonathan (Joffa) Smith is currently developing a brand new Spectrum game. The program is called 'SAUCER' It'…
... be careful to avoid any interrupts. While it's a challenge ... -
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…
... it uses and then reenable interrupts and reti at the end ... -
Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …
... the sound routine (and no interrupts), and I don't think ... -
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…
... true. The ULA generates the interrupts of which there are 50 ... -
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…
... true. The ULA generates the interrupts of which there are 50 ... -
What Sinclair related tattoo would you have?My wife has offered to pay for me to have a new tattoo for our wedding anniversary. I'm having (c) 1982 Sinclair Research with the diagonal coloured …
... ?screen=screens/load/k/gif/KnightLore.gif[/IMG]
obviously ... -
Games where you had no idea what you were supposed to do... but played anyway.Whilst browsing the archive for something new to play, I came across Tir Na Nog, which prompted the above question. I had Tir Na Nog as part of the …
Pentagram.
It made me very sad too. I was very much excited when I got it and loaded it up being a huge knightlore/alien 8 fan.....never did figure out what to do...only years later reading on here did I find out. -
Games where you had no idea what you were supposed to do... but played anyway.Whilst browsing the archive for something new to play, I came across Tir Na Nog, which prompted the above question. I had Tir Na Nog as part of the …
... just like it!
Knightlore - I knew exactly what you ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... comes with a big WARNING. Interrupts use the stack too. Whenever ... pointer, that you either disable interrupts (DI) or you're doing ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... />
Doesn't rely on Interrupts being Enabled either. -
Nice Graphics seduce innocent reviewerWas downloading a few more games to have a whirl on today and came across LIGHTFORCE. Remember this getting smashed by Crash and getting pretty much …
Thanatos - bloody great dragon not much else.
Every 3d filmation game by ultimate after knightlore ( maybe with the exception of gunfright )
I'll get me coat :) -
Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…
... or something
DI ; Disable Interrupts
LD (spstore),SP ; Store ... Stack Pointer
EI ; enable interrupts
[/code]
An ... -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... /> org 08000h
di ; disable interrupts
ld hl,gfx ; hl ... -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... /> And since you've disabled interrupts, you can even set the ... the routine or re-enable interrupts. -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... /> And since you've disabled interrupts, you can even set the ... the routine or re-enable interrupts.[/quote] -
Spectrum game saleHello everyone, I'm having a big clearout out of all my spectrum games.Here is the list. Large box compilation of games ?2.50 eac…
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…
... on that HALT forever if interrupts are disabled).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…
... 'll only stop forever if interrupts are disabled. Actually, internally it ...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 …
... type, because the ROM disables interrupts whilst it makes the keyclick ...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 …
It doesn't work in 128 BASIC because you've put the interrupt vector table in the top 16K and 128 BASIC pages that out quite frequently without disabling interrupts.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 …
... unaffected. Anything that switches off interrupts, such as
; a BEEP ... attribute data
; install interrupts
ld a,0x3b ; High ...More 1-bit music from Mr BEEPGot an e-mail this morning but didn't see a thread, so here it is: [url]http://berlin_hq.micromusic.net/bhack.html[/url] [QUOTE]BHQ001 MISTER BEEP …
... Spectrum emulator loaded assuming that interrupts don't have a role ...re-name a speccy game (for the lol's)Daley Thompson's 'De-Caff'-a-lon same as the original but you have to ingest copious amounts of de-caffinated coffee in order to achieve decent resu…
... .[/QUOTE]
Mire Mare - Knightlore VI - This time it's ...
