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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…
... logic needs to decode these signal sequences to respond properly. Zilog ... -
Amstrad and the SpectrumWhy has Amstrad made so little of their rights to the ZX Spectrum? In the last few years we have seen various retro products celebrating the Coleco, …
... my NTSC to PAL tv-signal converters! They have absolutely nothing ... -
Amstrad and the SpectrumWhy has Amstrad made so little of their rights to the ZX Spectrum? In the last few years we have seen various retro products celebrating the Coleco, …
... my NTSC to PAL tv-signal converters! They have absolutely nothing ... -
+3 Disk Drive "B:"Help me please! I've Googled 'till I can't Google no more. Is there an EASY way to fit a 3.5" FDD to the drive B: connector on the +3, and when it i…
...
- switch for the ready signal, two positions, labelled RY or ... -
Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…
... had just brought the WAIT signal outside the chip, then things ... -
Cobra - scrollingHi everyone, I have been studying some of the code in Ocean' Cobra game using a debugger, in the hope of improving my own scrolling routines. In cas…
It seems logical enough - the memory refresh signal is probably linked to everything else, providing another way of getting a timing sync. -
Connecting real Spectrum to TVHello, This is my first post on this forums, so hello to everybody. I have recently bought Spectrum +2 on internet auction and tried to connect it to…
... to use the composite video signal from the DIN socket instead ... -
Connecting real Spectrum to TVHello, This is my first post on this forums, so hello to everybody. I have recently bought Spectrum +2 on internet auction and tried to connect it to…
... - there seems to be some interference.
Is this due ... -
Connecting real Spectrum to TVHello, This is my first post on this forums, so hello to everybody. I have recently bought Spectrum +2 on internet auction and tried to connect it to…
... your TV set. If the interference was from channel five it ... -
Programming Sound EffectsHi guys, Have decided, probably due in some way to my midlife crisis, to tart up and re-release (or even just re-lease) the old 48K Speccy games I w…
... the portion of time the signal is high (1) with the ... portion of time the signal is low (0). The percentage ... of time the signal is high is called the ... , showing one period of the signal (each period is repeated over ... -
Interesting Custom LoadersHi everyone, I was just thinking about custom loaders on the spectrum and I thought I'd ask you all what you thought was the best one. I'd have to …
... /> 10 INPUT "Colours of pilot signal? ",p1,p2
20 INPUT ... "Colours of loading signal? ",l1,l2
Followed ... the sense that the pilot signal could be 00100101 (0010=red ... -
Programming Sound EffectsHi guys, Have decided, probably due in some way to my midlife crisis, to tart up and re-release (or even just re-lease) the old 48K Speccy games I w…
... into an electrical signal. This is an analogue signal -- the ... snapshots" of the analogue signal's voltage at regular intervals ... the analogue signal into a discrete-time signal, represented as ... the analogue signal.
Any analogue signal can be ... -
Interesting Custom LoadersHi everyone, I was just thinking about custom loaders on the spectrum and I thought I'd ask you all what you thought was the best one. I'd have to …
... /> 10 INPUT "Colours of pilot signal? ",p1,p2
20 INPUT ... "Colours of loading signal? ",l1,l2
Followed ... -
Interesting Custom LoadersHi everyone, I was just thinking about custom loaders on the spectrum and I thought I'd ask you all what you thought was the best one. I'd have to …
... /> 10 INPUT "Colours of pilot signal? ",p1,p2
20 INPUT ... "Colours of loading signal? ",l1,l2
[/quote]
Programming Sound EffectsHi guys, Have decided, probably due in some way to my midlife crisis, to tart up and re-release (or even just re-lease) the old 48K Speccy games I w…
... signals, but whether the electrical signal is current or voltage doesn ... though so a (differential) current signal needs to be converted somewhere ...commodore64just download a c64 emulator and find this interesting site [url="http://www.c64.com"]http://www.c64.com[/url], lots of games and screenshots, ..i re…
... have a fly by night signal than a permanent wave. ;)Basic info about platformers...I have run a search for an answer to this question and haven't found quite what I was looking for so I thought I would pop a post on here... What ar…
... test is that it may signal a collision even if the ...+2A "Ghost" programHi all - first time posting here, so I'll do a quick background - I was a (far too) dedicated 48k and +2A gamer in my younger days. Thanks to the mi…
... TZXing as it rounds the signal using Schmid Trigger :).
Anyway ...Spectrum 128 - digital or analog RGB?Does the Spectrum 128 output an analog (Amiga / Atari ST-style) 15kHz signal or a digital (IBM CGA-style) 15kHz signal? Tnx blakespot
digital signal, see
[url="http://www.fruitcake.plus.com/Sinclair/Spectrum128/SCARTCable/Spectrum128SCARTCable.htm"]http://www.fruitcake.plus.com/Sinclair/Spectrum128/SCARTCable/Spectrum128SCARTCable.htm[/url]Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... internally but the 60Hz signal on the AC supply ... to generate the interupt signal and screen sync. The ... happy run with a 60Hz signal.
The ... ROM doesn't determine the signal - it can't. ... say above the interrupt signal is not generated internally. ...Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... if it pulled from AC signal it would get 60Hz.
But apparently the AC signal is not used for clock ...Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... if it pulled from AC signal it would get 60Hz.[/quote ...Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... . The ULA provides the INT signal at 50 beats a second ...Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... . The ULA provides the INT signal at 50 beats a second ... being used as the interupt signal generator.
EDIT: I ...Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... . The ULA provides the INT signal at 50 beats a second ...Vanished without a trace.Hi everyone, I've just noticed that ENERGY4UK's posts have been deleted in their entirety. That's great. Hopefully our beloved administrator will co…
... than robots, that a TV SIGNAL CONVERTER infringes none of their ...Windows Compile of PlayTZXHad to re-do it as I couldn't find it, but here it is: [url="http://slitscan.spymac.net/Playtzx.zip"]http://slitscan.spymac.net/Playtzx.zip[/url] I…
... (some sound cards output the signal reversed) and the ability to ...Windows Compile of PlayTZXHad to re-do it as I couldn't find it, but here it is: [url="http://slitscan.spymac.net/Playtzx.zip"]http://slitscan.spymac.net/Playtzx.zip[/url] I…
... really ! I just reverse the signal when I write to the ...Windows Compile of PlayTZXHad to re-do it as I couldn't find it, but here it is: [url="http://slitscan.spymac.net/Playtzx.zip"]http://slitscan.spymac.net/Playtzx.zip[/url] I…
... really ! I just reverse the signal when I write to the ...Spectrum monitor display questionsLike most people, I never played the Spectrum with anything other than a standard TV with rf connection to get my picture. For other computers of the…
... wall and there is huge interference on the screen which isn ...
