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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…
... if zero then RAM is faulty.
Use current HL as ... -
+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 +3 -
To Winston , diag-interface.Hello to all, first, sorry for my english i'm from spain and my english is very poor. Wiston, thank you very much for your great work "diag-interface…
... all video ram but still faulty. Thanks you again,
Francis ... -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
... to happen? Could I have faulty eeprom, or GAL's (they ... -
128 I/O portsIn The Spectrum Hardware Manual there is a small circuit on page 71/72 to allow 128 I/O ports by using IORQ+A7 to override IORQGE, so any I/O access …
... =0, and IORQGE=0. A faulty ULA responds when IORQGE=0 ... -
+2A, are they all this incompatible?My +2A does not seem to be faulty but the number of games that don't run on it are silly. Scooby Doo(Elite), Crazy Cars , Turbo Outrun, Vindicator(im…
... does not seem to be faulty but the number of games ... -
Problem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue. At first the board had OKI chips for high memory and one of them was faulty. Since its ea…
... and one of them was faulty. Since its easier, i got ... program it sais there is faulty RAM at address 8000, and ... -
Name The Game ... Commando/Duet style game.I remember playing a Load'n'run game coupla decades ago, it was a Commando-themed game, the layout of the playing screen was very similar to [URL="ht…
... before ... oh, well ... that's faulty RAM for ya. -
Faulty Spectrum (help requested)I have an issue 6a specci. It's Z80 has the fault m1 line problem (Multiface 128 does not work). So I decided to put in a new Z80 but unfortunately i…
I have an issue 6a specci. It's Z80 has the fault m1 line problem (Multiface 128 does not work). So I decided to put in a new Z80 but unfortunately it was not socketed. So I unsoldered it, soldered in a socket and put the Z80 in again. Unfortunately the ... -
DivIDE+ and 128K HeatsinkI got my DivIDE+ yesterday and i tried it on a 48K+ at first, it worked marvelously on it, no problems at all. Today i desided to try it on my 128 H…
... someone would say "its a faulty M1 line of the Z80 ... speccy i had with a faulty M1 line a year ago ... one of them having M1 faulty line.
The same Z80s ... -
New to +2Hi, glad to be writing after a while lurking. Pleased to meet you all!:-) I have got massively back into spectrum gaming after selling my seccy yea…
... , or do I have a faulty +2A?
I would be ... -
Faulty M1 pin on a Z80 made from SGS?It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is no…
It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is nothing would been connected. But if I boot it from a ROM cartridge, it works as expected, so I cannot blame ... -
xbox 360 wireless adapter problems - help?I just bought a brand new Xbox 360 Wirless Networking Adapter. I can't get it to work, it seems. When i run Test Xbox Live Connection, it falls at t…
... I have bought a faulty adapter, have a faulty xbox, or am ... -
Video fault with my spectrum, any ideas?Spectrum not working, CPU still seems to work, as the "BEEP" command still operates if machine is plugged in, however it no longer displays a picture…
... have any ideas what maybe faulty?
Thanks Shomenno -
Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …
I've just got a Discovery Opus, but it seems to be faulty.
When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", but there is no response on any key.
Ideas are very welcome. -
Post your computer stupiditiesI used to check this site out quite a lot [url]http://www.rinkworks.com/stupid/[/url] but it doesnt get updated much. So i was wondering what stu…
... me that the keyboard was faulty and would print on screen ... -
Three free +3sI'm about to throw out three Spectrum +3s. The computers themselves all work, but all the disk drives are faulty. Two of them are boxed, the third is…
... all the disk drives are faulty. Two of them are boxed ... -
4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?
Someone told me I got faulty RAM in my broken 48K.
They should be 150ns, right?
What would be a good place to buy them from? -
25% Discount AND Combined Postage!Hi! Just thought I'd give you all a gentle reminder that I am offering a 25% discount on ALL orders over ?10.00 (excluding P+P, which I WILL com…
Help with faulty +2ahi everyone I'm Nuno from Portugal I think I made poopoo with a 128k +2a motherboard I had spare for testing purposes This motherboard has always …
hi everyone
I'm Nuno from Portugal
I think I made poopoo with a 128k +2a motherboard I had spare for
testing purposes
This motherboard has always worked without any problem
I was testing a few Z80s and Roms from ...Keys don't work even with new membrane, HELP!Hi folks. I have a 1983 48k Zx Spectrum. It powers up fine, but none of the keys respond. I have tried fitting a new keyboard membrane from rwap, but…
... the new membrane is not faulty (it looks fine), any ideas ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... or is my replacement membrane faulty ?
Is there a ...Fuller Sound box faulty for the Zx SpectrumBit of a long shot, but anybody got schematics for the fuller sound box, mine works apart from the ear socket, can't load games thr' the supplied ear…
Bit of a long shot, but anybody got schematics for the fuller sound box, mine works apart from the ear socket, can't load games thr' the supplied ear socket on the fuller sound box. Which kinda puts a downer on having in the first place.
I've ...Pc to real +2 loading issues Please Help!?!?This is causing me great headaches, please shine some light onto it. I had a black +2 128k as a kid, always argued that it was better than C64 with …
... tapes, and now has a faulty mech due to me trying ... can't have 3 faulty spectrums, and faulty leads etc...
Now joystick interface troubleHi people, Just got my speccy +2a loading from a headphone jack I mounted to it, (thanks to everyone on here who helped) But just realised my dk'…
... my +2a (black) has a faulty interface socket?? (maybe that's ...Now joystick interface troubleHi people, Just got my speccy +2a loading from a headphone jack I mounted to it, (thanks to everyone on here who helped) But just realised my dk'…
... my +2a (black) has a faulty interface socket?? (maybe that's ...Help - no tv receptionHi I've just bought a 128k Spectrum +2 from ebay & am having trouble getting any output on a tv. The specy seems to work - the power light comes on …
... 't think the machine is faulty. But I've tried a ...Faulty 128 toastrackHello, I hope someone of the hardware gurus can point me in the right direction for fault finding. My speccy crashes often (sometimes after a short,…
Hello,
I hope someone of the hardware gurus can point me in the right direction for fault finding.
My speccy crashes often (sometimes after a short, sometimes after a longer time of use) with a weird screen like this:
[URL=" ...not much gear and absolutley no ideaIm looking for some help with two spectrums that i have just dug out of storage and are both unfortunatley faulty. I had always regreted that during …
... storage and are both unfortunatley faulty. I had always regreted that ...
