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Incompressible blocksOne idea I've been pondering about regarding Mackarel is incompressible blocks. If you have a game where you store some data in memory in compressed …
... game where you store some data in memory in compressed form, it ... where you can declare some data uncompressible, and that will ... be in the slower low memory, which means copying things ... compressed stuff doesn't benefit from compression - especially if you' ... -
Question of contentionI'm not desperate to go digging through technical descriptions in depth, but one thing bugs me about the Speccy's video contention model - and that's…
... amount of data the ULA is extracting from the RAM ... that's already been fetched from memory.
So ... can the ULA access memory faster than the CPU ... contention pattern where the memory is only uncontented for ... ULA appear to fetch data in 16 pixel bursts ... -
Spectrum 128Ks, disk interfaces and unique and very rare disk softwareI am a 72 year old ex enthusiast who put all his equipment in the loft 30 years ago which was fully working at the time. From memory I have a couple…
... fully working at the time. From memory I have a couple of ... loading routines with disk loading data. Some are 128K games and ... separate 3.5" disk drives. From memory, one Plus D was converted ... to swap over from Plus D to Disciple ROMS ... -
The secret of success is failure32 years ago when I first started learning to program thanks to the Speccy, I didn't worry about not getting the anticipated results. I wasn't confi…
... my first attempt at using READ DATA and then typing in a ... maybe someone might find encouragement from this observation. -
RemakesHello everyone! I am new to the forums. (I was in read only mode for a while before I decided to join.) I owned a 48K Speccy when I was a kid (cca fr…
... the forums. (I was in read only mode for a while ... I was a kid (cca from 10 to 16), played a ... I could extract the map data from a snapshot, so I preserved ... one I secretly working on from 2008 is AstroNut ([url="http ... -
Writing own emulator: Contention questionsHi! (I don't know if this message should be here or in Hardware) I'm trying to write my own emulator just for the sake of it, and I'm having pr…
... 'm having problems understanding the memory contention in 48k, in instructions ... 5 memory contentions there? It's like it's trying to read ... 5 times from memory when you already have the memory read result ... -
Multi-Platform Arcade Game DesignerFirst of all, I should say Hello, having left the Spectrum scene around a year ago. I'm not planning to make a return but figured that I have some n…
... redefine the keys. There's READ, DATA and RESTORE and what's ... allow you to convert graphics from one format to another. ... automatically. You can import sprites from SevenUp sprite files or import ... 0.7.5, is available from [url="https://jonathan-cauldwell.itch ... -
Delete personal dataHi. They have warned me that my name and surname appear in this website. Indeed, they were games that I wrote for Spectrum when I was a minor. On Apr…
... contact to remove my personal data from the web? Thanks. -
Exact emulation of the Snow effectAs the original post on another forum is outdated, and for those who don't know about that forum, I duplicate this info here: At the beginning of …
... — reading screen data by the ULA and memory regeneration by the ... data and memory regeneration leads to the fact that ULA cannot read the data ... of pixels with the data read earlier. This effect is ... the pixels2/attributes2 data will not be read, and the screen ... -
Z80, TZX and TAP formatsHi again I?ve seen these three formats as the most common of all. The doubt is... Which is the best of them? What are the differences between them? …
... just an image of the memory + the state of the hardware ... emulator loads the image into memory and resets the emulated hardware ... 'LOAD ""', the emulator sends the data from the tape files to the ... emulated hardware just like from the real tape recorder. i ... -
What about my PCI128?Hello guys... My problem is that I have the Soundblaster PCI 128 How can I read and record the games from the cassette recorder? I tried Warajevo, …
... " Prog 213 213
1 Data 21040 21040
2 etc ... !
(Quoting all this from memory but it should be OK ... -
Problem opening Speccy gameI really want to play Fruit Machine Simulator 2.I have unzipped it onto my PC but when I open it in my emulator.It says it is an unrecognised file ty…
... , ie files that contain music data from Spectrum games. They can be ... using a program able to read them, such as Sergey Bulba ... />
Besides, FMS II is from Code Masters, so I'm ... -
ScrollingBit of a daft topic but anyway... Which game had the best scrolling? I would have to volunteer Commando and its silky-smooth scrolling. A particula…
... with each memory address representing
; screen data from left to ... intended for the screen the memory organisation no longer
... , or from a routine that reads map data that points ... incredibly useful - we can 'scroll' memory directly
dec hl
"La Abad?a del Crimen" - English versionOK, I've started a new thread for this, as the discussion about "La Abad?a" in the [url="http://www.worldofspectrum.org/forums/viewtopic.php?mode=vie…
... you have to follow and read what's being said at ... 16:33, Amigo wrote:
[...] from memory but he says something like ... was open to anyone to read the documents I posted. Your ...Load games from mp3Hi, I'm a very new member of this forum, so please don't take offence of this topic. I'd like to know if I can load games from mp3 files. And if it…
... on a CD as a data disc then thats different, youll ... some device that will/can read MP3s from your disc.
Spectrum LpatopSo I'm sitting at work board as normal I've already played klass of 99 3 days today and have nothing left to do. So after setting up 5 laptops today…
... the old speccy to read a USB Memory card!!!!
Not ... 9V's to the speccy from a portable power supply, saying ....P filesAs this appears to be the standard for ZX81 files for the near future can anybody point me to the required tools and if possible a tutorial on how to…
... /> I'm writing the following from memory, so it might be wrong ... set), directly followed by a memory dump of Address 16393 upto ... E_LINE.
From the documentation I've read, it's claimed ...New project for 256 colours Games emulator!O.K. , I suggested Jonathan Needle ( Creator of the excellent Spectaculator at [url="http://www.Spectaculator.com"]www.Spectaculator.com[/url] ) to c…
... address (in their own memory space), load data from the same address ( ... in their own memory space) ... (8x64K of almost identical memory space seems wasteful) by ... diff'd descriptions of each memory space. Perhaps emulating a ...Help with .POK filesI was playing Through the Trapdoor and found this game too hard and decided im going to cheat ;) Let me get this straight are TAP files the cracked v…
... supports them, or extract the data from them manually and poke the ... ).
[quote]
the memory address eg:- 62671 and in ...+D/Disciple games archive?Hi all, Having finally got my disciple to work, I'm starting to have a look at hacking multiload games. Is there any archive on the web with games t…
... to load a block of data from a separate .dat file. ... address, length and identify the data block #. I don't recall ... a filename and loaded the data into memory as expected. Voila, multiloaders ... of snapshots ready to save data blocks to disk after pressing ...SDP Project ExpandingHi folks, The next Vault update isn't going to see that many +3 disks, due to poor interest. However, I've still managed to source some disks for t…
... the IPF file to produce data that "behaves" the way the ... systems. If the software wants data from a disk, it commands and ... return sequence X when you read Sector Z"
Is ... incapable of properly reproducing the data.
Which is why ...SDP Project ExpandingHi folks, The next Vault update isn't going to see that many +3 disks, due to poor interest. However, I've still managed to source some disks for t…
... br /> If the software wants data from a disk, it commands and ... transitions then sure, you can read them blindly assuming your device ... you really be sure the data you read is correct?
read can produce different data? The "data" you need to ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... an instruction / vector on the data bus.
I ... of opcode fetch (OCF) from memory, followed by 3 cycles of ... by 3 cycles of memory write and another 3 ... cycles of memory write.
... its vector / RST on the data bus) + 2 cycles of ...maketzx problemsDoes anyone else have problems running maketzx v2.33 (with or without the GUI) on Windows 2000 Sp4? I've just changed my OS from Win Me where i've m…
... plays is to facilitate data from the Spectrum to a ... disks that can be read on the PC withough messing ... and then transfer the data. You can also sample ... (I think) and load data in. Usually with Duplitape ... achieve the same, and from all our experiences we ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... understand by this: the data from the video memory
(16384-23296) ... But when was the information from the address 16384-23296 accessed ... has to access the memory(16384-23296) from the chip, but what ... CPU needs to access the memory while the refresh of the ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... in the Z80. I have read so much binary mathematics that ... ? For instance, say I fetch from memory the following 8 bits:
read the first few chapters of ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... in the Z80. I have read so much binary mathematics that ... ? For instance, say I fetch from memory the following 8 bits:
read the first few chapters of ...games written using game writng programsI was reading through some issues of crash not long back and one article was about some 16 year old that wrote Frank n stein for the speccy(never pla…
... , but apart from the headaches induced by trying to read the manual ... ; in particular, to ditch it from memory one was supposed to type ...building a computerFor some reason having come of age (25 last feburary) I've begun to get the itch to build my on computer, i.e. from scratch, not plug together pc par…
... , performs certain bus sequences to read from memory or write to an i ...8 BIT WARSwhen 8bits ruled the home market Speccys, C64 and Amstrad were the big 3 fighting it out for supremecy.... but they didnt survive which as we know wa…
... 't selling in enough quantity. From memory, Amstrad discontinued the CPC before ... to write a lot more data than a Spectrum or C64 ...
