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+2B ram chips?Hi all, I have got 2 Plus2B`s and 1 Plus2 gray case. Ok the one Plus2B don`t work, so I tried to see if I could pin down the problem. I changed the …
... problem.
I changed the Z80 from the Plus2B to the ... I know its not the Z80.
There are 4 ... I know its not the Z80, and the one ram chip ... least I have a working Z80 inside it.
The Plus2B ... -
8-bit or 16-bit registers?I'm playing around with writing a Speccy emulator for mobile Java at the moment. I did a quick and dirty port of Qaop, which does run but at less tha…
... that I can get the Z80 emulation at full speed on ... 'm about to start the Z80 core for real.
Notation questionI wasn't quite sure where to put this post, so anyone's welcome to move it whereever may be more appropriate. So I'm reading about Z80 interrupts he…
... /> So I'm reading about Z80 interrupts here:
[url]http ...ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... -Made-of-ULA-Chip-for-Z80-CPU-ZX-Spectrum_W0QQitemZ120137893224QQihZ002QQcategoryZ4193QQrdZ1QQssPageNameZWD1VQQcmdZViewItem[/url]
Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…
... the reset line on the Z80) and "hard" resets (pulling the ...Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
... compressor many years ago for z80 machines).
I currently ...+2B problem stillHi all, I have a spare +2B that still dont work. Richard kindly sent me 4 x 4464 ram chips but the +2B still dont work I have swapped over both ROM`s…
... both ROM`s and the Z80 for known working chips ans ... is very warm and the Z80 is very warm and getting ... both ROM`s and the Z80.
I thought that the ...Old TS2068 tape foundI made a .z80 snapshot of the programs I found in both sides. If you load the first program and read the commentary, you'll understand how this gentl…
I made a .z80 snapshot of the programs I ... .zidev.com/ts2068/other/JRC_side_1.z80[/url]
[url]http://zxspectrum ... .zidev.com/ts2068/other/JRC_side_2.z80[/url]
It's ...Splitting Images tzx maybe not perfectI've been hacking this game and its loader. Also the save routine is intact in this game. It saves a block with a pilot length of 801 pulses. Test…
... .homecall.co.uk/spec/splittingimagessave.z80]Splitting Images Saver[/url]
Shadow on glassI don't think this game can be finished. I've used the GACPAC extractor tool so that I can examine the game in GAC [url]http://homepage.ntlworld.com…
... .ntlworld.com/madmekon/specpic/SHADGLAS.Z80[/url]
and made ...Question on Z80 R/W cycles.Snipped from the complete spectrum ROM disassembly: [CODE] Now the memory is checked. 11DA RAM-CHECK LD H,D Transfer the value…
Snipped from the complete spectrum ROM disassembly:
[CODE]
Now the memory is checked.
11DA RAM-CHECK LD H,D Transfer the value in DE
LD L,E (START = +FFFF, NEW =
How to make TAP files of multi-load 48k games?I have a website, [URL="http://www.zxspectrum.net"]ZXSpectrum.net[/URL], with the ZX Spectrum 48K emulator Qaop, that accepts TAP, Z80 and SNA game f…
Mnemonics UppercaseMy question is more PC oriented than Spectrum, but maybe somebody knows a simple solution. I have some Spectrum machine code in .asm files. I wrote …
... to load a list of z80 instructions and perform replacing only ...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…
... for 32 cycles and the Z80 can generate interrupt for the ...Sam Revival issue 19 out now! [Sam CoupIssue 19 of Sam Revival is now out! Let's start off with what's on the coverdisk: Conquest. Written by Peter King in 1997 this originally had a lim…
... this issue is "Programming the Z80", a new machine code column ... introduction to the Sam's Z80 CPU, hexidecimal numbering, memory and ... a gentle plunge into learning Z80 assembly and you'll soon ...Best 128k model to add CF IDE disk etcHi, i'm hoping to turn one of my speccys into more of a 'console' the plan is i'd like loads of speect games installed say on a compact flash card …
Hi,
i'm hoping to turn one of my speccys into more of a 'console'
the plan is i'd like loads of speect games installed say on a compact flash card mounted inside the speccy rather much like whdload works on the amiga.
...Wipe Out by KB RamWhilst doing a long-overdue update for Speccy Spoilers, I noticed that one of the latest additions is a game which doesn't appear to be in the archiv…
... ://www.rzxarchive.co.uk/wipeout.z80[/url]Reading digitized data from the DivIDE......MB02 or any other IDE interface with cf, cd, sd or an hd connected to it. What would be the best route? I don't know if there's a size limit for …
...MB02 or any other IDE interface with cf, cd, sd ... for filenames when using these IDE interfaces, but it there isn ...Need help identifying this musicI made a small basic program with all the notes that I can remember, but it may be incomplete. I'm not sure if this was from a game or not. Please li…
... .zidev.com/zx/temp/UnknownMelody.z80[/url]
Thanks ...+3 and 3.5 Floppy Disk DriveCan anyone please help ?. I have a +3 with a faulty Floppy Drive and have a couple of spare 1.44 IDE 3.5 HD Floppy Drives. Does anybody know of a…
Can anyone please help ?.
I have a +3 with a faulty Floppy Drive and have a couple of spare 1.44 IDE 3.5 HD Floppy Drives. Does anybody know of a modification to enable a modern 1.44 3.5 HD Floppy Drive to be used in the +3Damn, I think I need a reflow ovenOr a reflow frying pan at least... I was just assembling an order through Farnell since I've worn out another soldering iron tip (which has actually…
... than the CP2200 for the Z80 to read, without a microcontroller ...A Legacy for AlaricThis one's a bit confusing. Side 2 of [url=ftp://ftp.worldofspectrum.org/pub/sinclair/games/r/RetardedCreaturesAndCaverns.tzx.zip]Retarded Creatures…
... /pub/sinclair/games/l/LegacyForAlaricAPart1.z80.zip]Part 1[/url] and ... /pub/sinclair/games/l/LegacyForAlaricAPart2.z80.zip]Part 2[/url] are ...Trying to create NMI, whats this switch?Hi, I have been reading a book Z80 Applications, and I am trying to create a simple device for creating a NMI. Here is a schematic: [url]http://www…
... have been reading a book Z80 Applications, and I am trying ...Anyone program on the speccy and still program?I messed around with Spectrum basic in the 80's mainly doing drawings that I created using basic commands. I then learnt Z80 Assembler for a collage …
... basic commands. I then learnt Z80 Assembler for a collage project ...Why oh why....... did I have to read the thread about cross-assembling using pasmo and ConTEXT......grrrr. Now I've just wasted hours playing with z80 m/c, lol I…
Can anybody recommend a good assembler?I've just downloaded Toni Baker's "Mastering Machine Code on Your ZX Spectrum" from the books archive and I'm hunting for a good speccy z80 compiler.…
... hunting for a good speccy z80 compiler.
Can anybody ...Recent Returnee to the spectrum fold needs hardware adviceHi all. Thanks for taking the time to read this. This is my first post to this forum after I stumbled on this site just a few weeks ago, i only reg…
... what about other files? The Z80 and SNA files?
Z80 files and wouldn't mind ... software to copy sna or z80 files into DSK format??
RrcaI'm having trouble finding an exact explanation to how all the z80 instructions work, but I get by ok on most of them. I'm sure I've been given link…
... explanation to how all the z80 instructions work, but I get ...Ports AccelerationOn ZX48 or 128/+2(grey) is contended and uncontended ports. For example: if you will read 512 bytes sector from IDE device to ZX ram via INI or INIR,…
... read 512 bytes sector from IDE device to ZX ram via ...
