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My Issue 2 spectrum"IT'S ALIVE!!!!!" - Dr Frankenstein I got my issue 2 spectrum up and running, colours and all. I borrowed socketed lower ram from my issue 3 that is…
... is working (a member on this forum has sent me ... is quite possible that the power issues that plagued this ... not find any data sheet on them, and I dont ... from RWAP, an new low power Z80 cpu (Nec 780008C), memory borrowed from ... to never give up on this machine :) -
128kB snapshot on ZX48kBWhat is best way for 128kB snapshot loading on 48kB models ? Some Z80 snapshots are 128kB versions (Z80 v2 or v3) but contain 48kB games. Same proble…
... 128kB snapshot loading on 48kB models ?
Some Z80 snapshots are ...
- If 128kB Z80 snapshot is loaded on ZX48 then load ram ... emulator). Only if 128kB Z80 use 48lock on port 7FFD(bit 5 ... add next detection of snapshot registers state and use current ram ... -
WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... the multiplexer outputs from the Z80 side are higher. Hope that ... configuration to the FPGA upon power-on. If the RC-generated reset ... is fully configured and the CPU clock is working, the machine ... a temperature knob, but a power knob counting from 0 to ... -
Z80 new old stockHi. I found this on eBay but ... is there a way we could know they don't hav a faulty M1 line? [url]http://www.ebay.com/itm/Zilog-Z80-CPU-Z0840004PS…
Hi. I found this on eBay but ... is there a ... ://www.ebay.com/itm/Zilog-Z80-CPU-Z0840004PSC-New-Sinclair-ZX81-Spectrum ... -
New Z80 CPU emulation testerI have finally wrapped up the new [URL="http://zxds.raxoft.cz/taps/misc/z80test-1.0.zip"]Z80 tester package[/URL] I have previously announced in [URL…
... /misc/z80test-1.0.zip"]Z80 tester package[/URL] I have ... the included tests pass completely on the real Spectrum I have ... available, and now also on the ZXDS which I have ... -
Spectrum items for saleI have many Spectrum items like Spectrum, Spectrum +, power adapters, Centronics Interface, Kempston Interface, Light Pen Interface(these are built b…
... Spectrum items like Spectrum, Spectrum +, power adapters, Centronics Interface, Kempston Interface ... still work), some ULA's,Z80 CPU,membranes, some memory chips16K,48K ... interested and wishes to carry on the good work I will ... -
New version emulator ZEsarUX-1.1Hi I have uploaded a new version of my ZX80/81/Spectrum emulator on [url]http://sourceforge.net/projects/zesarux/[/url] Changes are: Added suppo…
... my ZX80/81/Spectrum emulator on
[ ... /> Added support for loading .z80 snapshots with unsupported machines like ... br /> Added fullscreen mode on xwindows driver
Added ... synchronization on ZX80/81
Improved view cpu registers option ... -
ZX Spectrum+ DivMMC EnJOY! Grundig 16" LCD TV and books.The Spectrum is in very good condition. Composite video mod. New mambrane (bought in November 2014 from rwap_software [url]http://www.sellmyretro.co…
... : "Upgraded".
- Replaced Z80 with supplied CPU and socket. Suspect existing ... tests suggest no faults.
- Power on: 600 mA @ 9 V. Expected ... Z80.
- Power on: 530 mA @ 9 V. Expected display produced.
- Confirmed CPU ... -
Question about Z80 and RD/WRI know almost nothing about the Z80 CPU but I am learning. I know this is WoS so I hope asking generic Z80 related questions are OK. Anyway, I wa…
... almost nothing about the Z80 CPU but I am learning. ... I hope asking generic Z80 related questions are OK.< ...
Anyway, I was curious on how the RD and WR ... Say I have a Z80 connected to a microcontroller and ... />
Does the Z80 OR those two pins so ... -
Help understanding the Z80.So I have a Z80 CPU and a 32k ram chip. I understand how they connect. (Data and address busses, chip select etc.) But how would i input information…
So I have a Z80 CPU and a 32k ram chip. ... into ram or into the CPU directly through the data bus ... I need to use the CPU/ ram.
Yes. I know ... the books about the z80 kinda droan on and difficult to follow ... -
ZEsarUX-7.0Hi! I have uploaded a new ZEsarUX stable version :) This is ZEsarUX 7.0 There are a lot of new features added, more than ever! You can downl…
... registers, and a lot more...
* added cpu-step-over function on ... emulation:
* Added clip window registers
* Added Copper
... decay effect on AY Player, AY Registers and Waveform< ... menu
Fixed bug on Z80 cpu core, iff2 was not ... -
ZEsarUX 9.1New ZEsarUX stable version 9.1 :) You will find, as always, compiled versions for Linux, FreeBSD, Mac and Windows. The source code is available,…
... converters: from SNA, SP, Z80, P, ZSF to SCR< ...
-Show all registers on Debug CPU window
-Support ... /> -Added MMU information when viewing cpu registers on terminal console
on .scr, .tap, .tzx, .pzx, .trd, .dsk, .sna, .sp, .z80, ... -
Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…
... is not possiblebecause the Z80 CPU is too slow for ... one, got it from power of sound, this ... - except Jonathan who stumbled on 8x1 ) man, when it ... br /> [quote](But not on 48K, again, processor speed).[/quote ... played spectrum games on my cousins on my first trip ... -
Zlincon 2003 - Factor's reminiscences (SID-sound on ZX)Factor6 wrote his reminiscences after zx-meeting called Zlincon. I think the most important think is that time when we hear SID-sound on Speccy is n…
... last it sounds exactly like on Atari ST (without any errors ... /> Of course it takes most power of Z80 CPU, but not everything, if ... -
an idea that could be very very good...but also very very bad...Hello all! I've been having a chat with some of my friends round here that once loved the spectrum (well...2...as they're all heathens round here...)…
... more modern version of the z80 (EZ80) at 50mhz or ... we have 4 power-guzzlers :
1. The CPU
< ... lets you program a virtual Z80 on an FPGA as well - ... you could have the CPU AND Logic on the same one ... was edited by: b00mzi11a on 2004-01-08 22:52 ... -
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…
... that lets you access your registers by either their byte or ... .
Again, see the z80 CPU page I listed above for ... Message was edited by: Dunny on 2004-09-12 21:01 ] -
Mayhem Accelerator in actionI've put together the first video of the prototype Mayhem Accelerator running on the Sam Coupe. The video shows the Sam running a ZX Speccy emulator …
... in speed have any effect on the clock in the card ... /> [quote]
Dose the Sams Z80 cpu get hotter? Will I need ... using it's own 20MHz Z80.
[quote]
Can ... ]
No. When you power up the Sam you will ... -
Help! +3 won't work anymore!I've just set up my old +3 and it just won't work - it used to a few months ago but now it won't :( I'm in need of some expert help so here's the pr…
... everything in and switch the power on.
2] TV cannot ... is silence. The top power LED is on fine. The floppy drive ... +2a some time ago. Power led was on but just black screen ... /> - rom chips were okay
- z80 cpu was okay
- keyboard was ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
[quote]
On 2005-11-09 12: ... a reset (by asserting the Z80's /RESET line) "resets ... , clears the PC and registers I and R and sets ... reset (equivalent of a power off and power on). But sometimes I ... DivIDE also has different behaviour on cold and warm reset, ... -
Has this been done before?Are there any emulators whose speed can be adjusted by the Spectrum program that the emulator itself is running? So that, say the Spectrum program ca…
... nice to dream.
Back on topic , I like the shortcut ... z80 cpu alone.
Would be noce to be able to switch on ... do really benefict for more cpu power, without affecting musig and timing ... -
new spectrumI have notices all sorts of advances on the C64 sceene such as 20mhz cpus, gui`s, and IDE interfaces. are they any kind of advances in development fo…
... to plug a modern Z80 into the board than ... called for a 100MHz Z80 clone or something, but ... Z80 is available it would be so much better. CPU ... heavily focussed towards "System on a Chip" with their ... br /> Actel do live-at-power-on flash-based FPGAs, ultimately nicer ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... some other factors about CPU efficiency: number of registers.
It ... than clock ratio to Z80 shows. On 2.2 x bigger ... made exactly same compression algorithm on Z80 and 68000, and it is ... shorter on later - bacause I did most of job with CPU registers. -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... than clock ratio to Z80 shows. On 2.2 x ... made exactly same compression algorithm on Z80 and 68000, and it ... on later - bacause I did most of job with CPU registers.[/ ... with the Z80 isn't the number of registers it's ... see how fast the Z80 could have been with ... -
in quest for a z80 :DI am trying to find a Z80A in some retail shops here in Greece. I have only located the following CPUs branded as either Z80 without anything else o…
... LIST]
[*](Z8400) Z80 CPU Central Processing Unit
... B]Z8400
Z80B CPU
Zilog 8420[/B ... Z80 will work on a Speccy (the other parts are *not* low power ... ), but do not put anything that is not a CPU ... in the CPU socket. I ... -
MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]
... nice technical achievement that demonstrates power of DMA (= move memory block ... game speed-ups (examples are on the velesoft's page where ... But in general - it depends on the user how DMA will ... last point, Z80 DMA is natural companion of Z80 CPU. In fact, not ... -
DivIDE HelpHi all, After a rather long wait my DivIDE from Papaya labs arrived. I connected it to my spectrum, turned it on and...nothing. The green power LED…
... diodes (such as the Z80). The power-on reset SHOULD clear the indeterminate ... any of those GALs have registers?) and paging out the Spectrum ... everything connected, power the Speccy, then turn the power on to the hard ... -
In ye olde days of computingI found this page about some of the the history of home-computing. Maybe not complete, but still: [URL]http://www.jaapan.de/jp/homecomputer.php?page=…
... ;306422]No we're not. CPU technology hasn't advanced that ... increase in raw CPU power on a single die, since the Z80 was put ... -
plus3e simple ide interface problemhi, I prepared a 8bit simple ide interface 3 days ago, but I got problems (with or without ide cable connected). 1.First of all, I have to press re…
... 's supply, Extra decoupling, particularly on the CPU is required.
You ... difference at the speeds the z80 runs at. You would be ... BC325 seems to load some Z80's a bit, and sometimes ... well. Usually resetting after initial power on seems to fix the problem ... -
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…
... same.
When you power on (or press the reset button ... . While reset is active on the paging registers, they won't do ... Z80's reset is deasserted, but reset on the CPLD's paging registers ... do a hardware reset on the paging registers at all (it's ... -
Mass storage - why backup battery?I wasn't sure to post this under "hardware" or "development", but here goes: There are these mass storage devices for ZX Spectrum, and on many desig…
... is impossigle on flash eprom...). CPU stack ans registers backup can ... br /> And BATTERY BACKUP = possibility power-off computer without data erasing ... to sram after each power-on. Complette this sram memory ... be used manually before power-on computer and it's ...
