-
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... causes the ULA to have direct coupling to the Z80 data buses, so ... from ULA to CPU (U6), so Sinclair joysticks and external keyboard replacements ... a signal that I could use to tell if the VRAM is ... operations work again, and thanks to the isolating resistors, all ... -
Contiki, non-existant web servers and zx spectrumafter visiting this site today, (a web server running on a c64 - [url]http://c64web.com/[/url] ) I realized contiki already available on most 6502 ba…
... It is much preferable to use a hw solution for ... never use a sw stack on a z80 machine ... typically have resources to burn for typical applications ... to have to figure out a way to plug a USB keyboard ... into these things because PS/2 support isn't going to ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... row/column, use any picture of the ZX Spectrum keyboard matrix. For ... rows, from 0 to 4 for columns). I use this picture I ... 2 keyboard interface, being a external one, have access to all Z80 pins ... use your device only with the Spectrum running the ROM keyboard ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... . Select Tools -> Z80 Assembler.
To run our roadrace game ... RAM.
To write to the stack we use 'push'. To write from the ... keys.
The instruction to lock the keyboard is 'di' = 'disable ... /> ld bc,32766 ;read keyboard space to b
in a,( ... -
Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…
... :D I had to use a Cheetah multibus expansor to get it a ... (
// Interface to the Z80
input clk, // connected to INT signal (20ms ... the ULA, as both give keyboard status to the CPU
// so ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... I were to plug this into a MIDI keyboard, would I ... ? It'd be fun to use the Messenger as a MIDI ... alter some paging registers to reflect the new address ... is mapped to be visible by the Z80 as its ... retrieves whatever values the Z80 registers had when the ... -
Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... , if you were planning to use a compact flash adapter, ... to pin 20 is asking for trouble from the Z80 ... it plugs directly to CF including power from Z80 socket, as ... Is there enough space to place it where the ... the right corner of the keyboard and - with a little ... -
Fastest Z80?Hi , Could somebody explain more about the Kawasaki Z80 33 MHz to me? Is it fully backwards binary compatible with older Z80s and could it be used a…
... even manage to [I]find[/I] such a Kawasaki Z80. :lol: Let ... sorts.
Far fast Z80's, see [URL="http://opencores ... [/URL]. Or if you 'have' to use discrete chips: Z180 or eZ80 ... can't be used as keyboard port :-( -
How do I detect if key 'H' is pressed in machine code?How do I detect that the key has been pressed? I have been using the IN 239 command for keys 6-0, but dont know how to detech 'H'...
... things where you only need to worry about the bottom 8 ... have to get the top 8 bits right as well (Keyboard reads ... -bit-i-o-addressing-on-z80[/url]
It ... the original intention with the Z80 was to do 8-bit addressing ... is exposed, if you want to use it. -
Keyboard scanning routines / techniques?What keyboard scanning routines or techniques do people use? I'm looking to write something which doesn't rely on the ROM-based keyboard scanner, an…
... similar things. My keyboard.c file looks very similar to yours (although ... stub[/URL] to ZX Spectrum. GDB-Z80 knows how to read SDCC debug ... 'll be able to use DDD and Unix environment to run code on ... very limit of 3.5Mhz Z80). Wait states for each bit ... -
Yet another glitchy graphics 48kHeyo, I'm new both to the forums (sorry if this is the wrong forum) and to Spectra I'm afraid, picked up a 48k from a steam fair sale thingy (not th…
... sort of formula you could use to work it out accurately. ... CaptainHayashi;701778]No beeper or keyboard response, white noise coming ... something in the keyboard membrane worked enough to make it think ... fun watching the clock pulses to the Z80. :)
... -
Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …
... whether keyboard strokes are recognised.[/QUOTE]You can use equivalents ... keyboard inputs. Any fault that stops the Z80 after it has got to ... br /> Of all these, the keyboard Molex connectors including the solder ... and try again.
[*]to use a test EPROM or a ... -
Cascading transistorsMiguel (mcleod_ideafix) alerted me on an aspect of a design I'm working on where I am cascading transistors, which may give problems. This is the par…
... /> - The ZX Spectrum's internal keyboard will now work again, and ... it is still not possible to use it with a +2A, +2B ... array (ULA) outputs data when keyboard is read.
As you ... resistors between matrix array and Z80.
Maybe there is still ... -
"Jumping Jack" on Kempston Joystick.Hello. I'm new here, so at start I want to welcome everybody :) I'm totally newbie in ZX Spectrum. But I'm still own Timex without cassete player (I …
... work there. So I use tape loader command under ... X128 a snapshot z80 file and try to load it in ... bottom line. I tried to load tap file from you ... be fixed/hacked whatever. To bypass screen when prompt for ... emulator or show and use onscreen keyboard is also hard. At ... -
IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…
... officially documented as instructions in z80-compatible follow up processors.
You can't use IY without disabling the basic ... to update the frame counter and I think it is updating keyboard ... the isr also reads the keyboard. If you have IY ... -
Problem with Pasmo Assembler/Speccy emulator?I'm at the start of trying to learn Z80 assembly for the ZX Spectrum. I'm using Speccy 1.7 as my emulator, Pasmo as my assembler, and am following t…
... start of trying to learn Z80 assembly for the ... com/2011/12/introduction-to-z80-assembly-part-i.html ... br /> Hi bigbadbear9885.
Welcome to WoS :)
You ... this picture of the keyboard of an actual ZX ... simple examples of how to use the computer as a ... -
Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…
... machine code (anyone experienced with Z80 coding that has glanced at ... players hunched fighting over a keyboard.
Hopefully this has ... interface and for other coders to use it within their own games ... extra four players to the code - just got to design the ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... automatically cherry picking what subroutines to add to your program.
... -bits) to text in any base (we'll use the human ... /z88dk/libsrc/_DEVELOPMENT/stdlib/z80/asm_utoa.asm?revision=1. ... spectrum library has code to read the keyboard, render sprites, draw ... -
Face-Off: ZX Spectrum vs. Commodore 64I found an old oldish, but very informed and interesting article on the ole Spectrum vs. Commodore 64 argument. The article explains the technical d…
... and I liked the rubber keyboard (which I thought was ... no doubt have hated to use it if I were ... having computers with a proper keyboard, a floppy drive and ... And I was the coolest Z80 dude in town :grin: ... Spectrum or C64.. the keyboard and floppy thing was still ... -
Speccy Vs Amstrad CPC Vs C64I hope no one minds me posting this here as well as in the announcements section. I'll delete it if there is a problem. It's childish fun but can I …
... cpu, although architecture differences between z80 & 6502 do not give ... the weakest when it comes to vector/isometric games that rely ... much more flexible, and easier to use than CPC. Only it's ... complicated (if I want to read keyboard I need about 20 commands ... -
I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…
... your programs are written to use only memory they are ... hard to write fully relocatable code for the Z80 so ... you want your OS to relocate ... processes don't try to use them at the same ... an input system for the keyboard, and a screen manager ... -
ZX Spectrum+ adviceHey all, I just got a ZX Spectrum+ from eBay and I'm not sure yet what to do with it. I wanted to first take a peek inside, see what issue board it i…
... But the best instrument to test for a composite video ... it does have to be able to synchronise to a 625 line ... .S. have done, is to use a TV capture card with ... so press keys on the keyboard and you should hear a ... speaker. If yes, the Z80 CPU is running BASIC. Note ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... different streets.
The Z80 provides two signals, /MREQ which ... the Z80 has data that it needs to [i]write[/i] to hardware ... can use I/O ports to read the status of the keyboard but ... five keyboard columns. This would require ten bits, but the Z80’s ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... also been replicated. But the Z80 has an expanded / improved ... bit address. So the Z80 includes the machine code instructions ... full advantage of this to implement the keyboard interface in the ... engineers have since continued to use this Z80 CPU feature :D
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... clone. My goal would be to use all off-the-shelf components ... br />
Including a real Z80, real SRAM and a microcontroller ... I don't personally want to use FPGA for my first ... to get Bluetooth installed so we could use the ZX Spectrum Recreated keyboard ...Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... /ram check feature, so time to use it methinks...
... /> A damaged keyboard membrane prevented me from holding space to go into ... with the use of a joystick I was able to play ... br /> Lower ram replaced
Z80 replaced
Baffled ...Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... that you could feed the keyboard to the appropriate ports in the ... suitable 5-bit data to feed to the Z80 via (emulated) port $FE ... line seems to sound louder in the Vega). If you use the ... I recall he didn't use dual screen pages, so that ...Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…
... bit of experimentation. The Z80 instruction set is described in ... for things like scanning the keyboard, drawing sprites, scrolling etc, ... on tape or paper - ready to use and adapt for later projects ... on your ZX Spectrum (available to download [url="http://www. ...Keyboard interface - new approachI came accross this PS/2 keyboard interface. It requires a PS/2 keyboard and can output serial, I2C, 8 data pins, etc.I haven't thought it over, but …
... microcontroller has to detect which In/Out port the Z80 CPU is ... output of your board has to use open collector or open drain ... for this.
To connect such a keyboard to the edge-connector means ...
