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Issue 1 ram connectors....Hi Does anyone have the pinout of the Issue 1 internal RAM connectors, for the 16K-> 48K upgrade board, as I'd like to try and make myself a board, a…
... have the pinout of the Issue 1 internal RAM connectors, for ... fitted into sockets on the issue 2 and later ?
Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…
... been trying to upgrade my Issue 2 with the help of ...ULA bug and snowI am tryng to improve the snow emulation in FBZX wii but I do not have a real spectrum to test the results. I used the information taken from Harele…
... emultor is writing in the ULA video register the second screen ...128k ULA pinout?Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?
Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?Spectrum+ and dead keyboardI have a Spectrum+ which had no picture just snow on TV. I found instructions, that it might be regulator 7805, so I changed it. Now I saw something …
... , which said it might be ULA, so I changed it, but ... do next?
Motherboard is Issue 6A
Thank you.
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... />
But I have an issue 4S board with no case ... is generated by the ULA, Chris Smith's ULA book shows it ...Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
Ive got an issue 2 here that firstly had ... whole upper RAM, still same issue, Paul Farrows RAM tester produced ...Successfully updated Issue 2 48k to 128k?Thanks to the donation by PMSR and through the very patient teachings of Velesoft, I have updated the Issue 2 to work with 128k. However. I have yet …
... Velesoft, I have updated the Issue 2 to work with 128k ...ZX 48 issue 4S no s-video possible?No s-video on ZX 48 issue 4S possible? I have had this mod on my issue 4A. But this did not work with my 4S. On C65 is no chrominance signal. Here …
... s-video on ZX 48 issue 4S possible? I have had ... this mod on my issue 4A. But this did not ...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…
... replacement for the Sinclair ULA chip fitted in Spectrum ... signals originally generated by the ULA are not present here ... is the 5V tolerance issue of the FPGA I ... all pins of the ULA socket to FPGA interface ... to prevent the replacement ULA to touch the upper ...128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…
... kindly sold me a 128K ula since the one in my ... . But even with the new ULA, I still can not load ...DivIDE CompatabilityThe Spectrum is 30 show proved a valuable event for investigating issues with Spectrums which do not work with the DivIDE.... The ones I sell are ma…
... for repair displayed some possible ULA problems as without the DivIDE ... see if that resolves the issue.
WEIRD ...semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... verified all connections to ula and cpu via diodes ... compared to the schematics of issue 3 ,
... defective ?? ( i assume ula but how to prove that ... ?? )
Ula is ofcourse the "6C001E-6 ... or maybe has a working ula for sale ??
ZX +2 Grey with quiet ULA soundHi all. I come here for advice before messing up with the main boards and end up killing them for good. I got this grey ZX +2 with a very low ULA a…
... with a very low ULA audio. The ULA sound is low to ... is fine.
The ULA was checked OK with another ...Wanted C&VG scan issue 18 page 97as subject wanted - C&VG scan issue 18 page 97 just that page as a hi res scan 300dpi or more please many thanks in advance.
as subject
wanted - C&VG scan issue 18 page 97 just that page as a hi res scan 300dpi or more please
many thanks in advance.Retro Fusion Issue 3 for sale now!Howdy folks, Not sure if you're aware, but Issue 3 of the retro gaming and pop culture mag Retro Fusion has just gone on sale, for a special introdu…
... if you're aware, but Issue 3 of the retro gaming ... &p.
This issue features:
Exclusive interviews ... ;id=21:buy-retro-fusion-issue-3&catid=2:news ...The great 128k ConversionWell, I am not sure if it is going to be great. Hopefully it will! This evening, I set about getting my Issue 6A Spectrum Plus working. I suspecte…
... , I set about getting my Issue 6A Spectrum Plus working. I ... from the factory with the ULA socket in upside down.
THE ULA CHIPDoes anyone know which the ULA chip is in Spectrum +2 ?
Does anyone know which the ULA chip is in Spectrum +2 ?Spectrum 16K Issue 3Hi! I just received a Spectrum 16K, which turns out to be an Issue 3. Is it really that rare? If not, I?d like to upgrade it to 48K. There are 12 em…
... turns out to be an Issue 3. Is it really that ... chips from a (bad) 48K Issue Two be taken? I found ...For sale: ZX Spectrum 48K Issue 4SI have a fully restored (and with all chips socketed) ZX 48K Issue 4S, that I am told is a bit of a rarity, that I am willing to sell. Dont know what…
... all chips socketed) ZX 48K Issue 4S, that I am told ...Magnum Light Phaser issueHi! I have a Spectrum +2A and I have recived a [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=1000237"]Magnum Light Phaser[/URL]. I have tes…
... .
Is it an issue of Spectrum or the gun ...Spectranet and toastrack issueI've been using my spectranet with no problems on my standard 48k but just started using it on the toastrack and am having an issue. That being that…
... toastrack and am having an issue.
That being that ... /> Thinking it might be an issue with the toasty I loaded ... />
Any thoughts what this issue might be? I emailed Winston ...Issue 2 problemHeres a video of what happens when I fire up an Issue 2 board ive had hanging around for ages, this is with Paul Farrows RAM test cart in btw If this…
... when I fire up an Issue 2 board ive had hanging ...Issue 2 video problemHello all, Need some help with an issue 2 board that I 'm trying to restore. I've replaced all the electrolytic capacitors, changed the voltage regu…
... /> Need some help with an issue 2 board that I 'm ... have no problems with another issue 3 board. My knowledge in ...Lot's of ZX Spectrum parts: RAM chips, ULA's, etcI have new stock of 100% tested parts. I even got my hands on a bunch of ULA's!! [IMG]http://benophetinternet.nl/hobby/sales/parts/IMG_6068.JPG[/IMG…
... hands on a bunch of ULA's!!
[IMG]http ... [/B]
- 48K / 128K ULA
- Zilog Z80 3.5 ...NINJA HAMSTER issueHi - wasn't sure where to put this question... BUT... Recently bought a copy of Ninja Hamster- I love the game, its crazy and uses a great combat dyn…
... too...
problem is, the issue is not one I have ... is in anyway a known issue?
It seems like corrupted ...Zero 0.5 ReleasedAfter a bit of a hiatus, the next update of Zero is now available [URL="www.ramtop.wordpress.com"]here[/URL]. Feedback and bug-reports appreciated! …
... in full screen.
+ Added ULA Plus and +3 disk support ... IN contention (Woody).
- Fixed ULA PLus emulation that was broken ... to a stray page pointer issue.(Woody)
- Fixed scanline ... over it. (Obo)
- Fixed ULA Plus timing and colours (Andrew ...Underground Spectrum Issue 1After months of putting it off, or actually forgetting, I've finally scanned one of the only 2 copies know to still exist of Underground Spectrum iss…
... still exist of Underground Spectrum issue 1. This was produced by ...
