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+2a datacorder problemsHelloooo, how's it going? Reason I'm posting is that 1) I'm a massive speccy fan, it was the first range of computers I ever owned 2) I'm having rea…
... tweaking).
So the ULA chip is definitely good (very happy ... /> I'm thinking the amp chip is blown on the datacorder ... -
Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... measure output of video generator chip? this is unlikely. I guess ... sure somebody measured teac or ula chip for colour voltages. -
+2 sound socketHi guys, I have converted some of my old spectrum games to TAP files and I was playing around with loading them off my girlfriends laptop. Couldn't g…
just make sure that you put the wires in the right place else you'll fry the ULA chip. It's well documented, I kid you not :) -
Dud +2?Hi guys, Hope you're all having a great Xmas!! I recently picked up a +2 (Grey) on eBay along with a 48k system. The 48k system works a treat. Howe…
... />
Aside from a new ULA chip, is there anything else I ... -
Dud +2?Hi guys, Hope you're all having a great Xmas!! I recently picked up a +2 (Grey) on eBay along with a 48k system. The 48k system works a treat. Howe…
... membrane or try a new ULA chip I think. There is a ... -
I killed my Spectrum last night...*sobs*I got all nostalgiac after watching Labyrinth last night (a festive tradition), and felt the need to get the Speccy out. I played "Rookie" (with the …
... , you'd have killed the ULA chip most likely and it wouldn ... -
I killed my Spectrum last night...*sobs*I got all nostalgiac after watching Labyrinth last night (a festive tradition), and felt the need to get the Speccy out. I played "Rookie" (with the …
... are three basic types of ULA chip used in spectrums. The 40 ... pin DIL chip used in the early 16 ... gry +2) the ULA was a larger chip, but still DIL and ... black +2/3 the ULA is a flat rectangular surface ... you really will blow the ULA if you're not careful ... -
128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... sure sounds like a duff ULA that disfunctions after heating up ... ;329876]Maybe, but consider that ULA is also responsible for key ... could be just a faulty ULA "pressing keys" when its ... , rather than a dodgy ULA chip. The ULA gets quite warm anyway.
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…
... keypresses I'd suspect the ULA. The chances of finding bad ... ribbons, I would suspect the ULA chip.
It would be ...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…
I have a spare ULA chip if you need one by the way...... PM me an address to post it too. Oh, and I'll need to know the issue number of the board too - somebody said it was Issue two?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…
[QUOTE=DEATH;335390]I have a spare ULA chip if you need one by the way...... PM me an address to post it too. Oh, and I'll need to know the issue number of the board too - somebody said it was Issue two?[/QUOTE]
PM sent :)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…
New membrane arrived today, alas still no joy. I'm hoping the ULA chip from DEATH turns up in the morning. I shall keep you posted. I'm sure, like me, none of you have SLEPT A WINK during this most DISTRESSING TIME.DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... ,xxxxxxx1 can destroy DIVIDE or ULA chip on your ZX+2A/+3 ...DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... ]How will it destroy the ULA?
The conflict will ... DivIDE RAM). When does the ULA ever drive the data bus ... ) is connect to ULA chip and data from ula is connect to CPU ... slow memory page/videoram then ULA return data to ZX bus ...DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... ) is connect to ULA chip and data from ula is connect to CPU ... slow memory page/videoram then ULA return data to ZX bus ... convinced it'll kill the ULA though, rather, result in a ... still RTL like the 48K ULA, or were they using CMOS ...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…
Hi folks
Sorry not been o in a couple of weeks, been mad busy with real life.
It was the ULA chip afterall, so big thanks to you death!Issue 3B problemHi! I have an issue 3B board that is having a strange problem: when I got it it didn't had the -5V and +12v, as usual. After replacing TR4 and TR5 t…
... indicate a problem in ULA or video encoding circuitry ... I'd pull out the ULA chip (since it's normally ... too: take the (working) ULA from that other Spectrum, ... you have a faulty/dead ULA, or some other problem ... this option, to swap ULA's with another (working) ...Interface 2 issueI have an Interface 2 that has a problem. When a joystick is hooked up to it the 'down' direction doesn't work, this is the same on both ports. It's…
... its a fault in the ULA chip on the I2 itself, then ...zx81 help neededHi, I got a ZX81 today supposedly in working order, it was for the first two minutes, but after that the keyboard produces the wrong letter, number …
... guess either the ROM chip or the ULA chip is failing.
If ... errors.
Is any chip too hot to touch when ...Black screen of deathI recently aquired a zx spectrum (revision 3b) of the rubber key variety. it was all running smoothly(for about an hour after pluggin in), i left the…
Welcomes...and some technical stuffHello I`d like to welcome all ZX Fans. I`m rather ATARI 8bit geek - I got this grat machine when I was 14...20 yeras ago... There were few ZX in …
... ?? _ .. A0-a7 are obvious (ula chip ora old memory holes), d0 ...Newbie with Problem!!Hi guys, Just re-entered the world of Spectrums after having a great time with them in the 80's! I have purchased a 'mint' boxed Spectrum 48k with th…
For checking the route for signals from EAR connector to ULA chip (in reverse...): Program a repeating BEEP and see if audio is available at EAR. Will be little weaker than at MIC. (Feed the output somewhere into a sound system)Adjusting your code for screen refreshingOk, I'm aware that I should know it already after writing 5 Spectrum games in machine code but interrupts and screen refreshes were always my weaker …
... of Z80 clock by the ULA chip may play a role too ... screen, i.c. before the ULA starts
reading data from ... be
halted by the ULA chip.[/QUOTE]
Please note that ...Spectrum 128k +2 (grey version) Issue 1 Load games problemFirst off all I'm very happy to be a member of World Of Spectrum. Second of all: I have a BIG problem with my spectrum. The cassette tape recorder is…
... running, you can damage the ULA chip.
The biggest problem is ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... hot, or you got different ula chip then it was coded on ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... hot, or you got different ula chip then it was coded on ...Flicker fixer for ZX 48KHas anyone the schematics for the flicker fixer: [URL]http://8bit.yarek.pl/computer/zx.48/[/URL] Micky
... B]
Remove the ULA chip during this mod. Remove the ... the resistor. Check the ULA is firmly socketed and ... might have damaged a chip, or solder drops have ... br /> Take off the ULA again. Take the transistor ... the test program. The ULA snow shouldn't happen ...Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... useful if PCB issue and ULA type were listed also but ... to open, get the full ULA chip code and PCB issue.
ULA is reported in the list ...
