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ULA chipHi, Does anyone have an ULA chip for a Spectrum 48K issue 2 for sale?
Hi,
Does anyone have an ULA chip for a Spectrum 48K issue 2 for sale? -
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? -
Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... by black and white vertical stripes, one character wide.
The ... +2:
CPU
ULA
AY-3-8912
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…
... in replacement for the Sinclair ULA chip fitted in Spectrum 16K ... oscillator, and a small platform flash chip to store FPGA configuration ... signals originally generated by the ULA are not present here (it ... : to prevent the replacement ULA to touch the upper half ...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 ...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 ...Velesoft's ZX128+2 with 1.5MB memoryMy old ZX128+2 PROFI (grey model - spanish version) for sale here: [url]http://aukro.cz/super-zx-spectrum-128-2-1-5-mb-i2738723874.html[/url] Back s…
... kB (1 MB) + 512kB reprogrammable flash rom
- new extra ... next modes is automatically activated ULA raining protection.
- is ... full speed without slow down. ULA can slow down only CPU ... ZX is used only for ula video data.
- ...THE ULA CHIPDoes anyone know which the ULA chip is in Spectrum +2 ?
Does anyone know which the ULA chip is in Spectrum +2 ?Strange failure modeI just had a 48K machine "fail" in what seemed like an odd way. Problem: Random keypresses (not from any particular part of the key matrix) appearin…
... all the inputs to the ULA to make sure the pull ... a possible problem with the ULA.
But when I ... it's dead, but the flash seems to be corrupted or ...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 ...Jumping Jack FLASH (and Android)Hi there I've just completed my remake of jumping jack for flash and android, to celebrate that he is 30 years old this year. Play the flash version…
... remake of jumping jack for flash and android, to celebrate that ... year.
Play the flash version here: [url]www.tcksoft ...WANTED: ULA chip for Issue two SpectrumHello, I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip the…
Hello,
I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip they'd be willing to sell? Please PM me if you can help.
Regards,
KamilZX Spectrum ULA + Glue Logic in VHDL for EPM78128SLC84Hi. I'm wanting the VHDL code for the Spectrum ULA and Glue logic to pop onto a Alter MAX EPM7128SLC84 (CPLD) IC. I'm wanting it to perform : Memo…
... VHDL code for the Spectrum ULA and Glue logic to pop ...ZX Spectrum ULA + Glue Logic in VHDL for EPM78128SLC84Hi. I'm wanting the VHDL code for the Spectrum ULA and Glue logic to pop onto a Alter MAX EPM7128SLC84 (CPLD) IC. I'm wanting it to perform : Memo…
... VHDL code for the Spectrum ULA and Glue logic to pop ...Unspecified Custom Loaders IdentifiedThis thread specialises in loaders which are considered to be "Unspecified custom loaders" according to the Infoseek engine. These loaders (after som…
...
- The loading stripes on the border are nonstandard ...
- The loading stripes on the border are multicolour ... blocks are in multicolour rainbow stripes
- There is ... Flash Loaders). Since the variants share the same multicolour loading stripes ...128k toastrack with an amstrad ULAI received a 128k toast rack today with an "amstrad" ULA fitted, I'm wondering if this is fairly common or more rare, presumably manufactured after t…
... rack today with an "amstrad" ULA fitted, I'm wondering if ...ULA Plus demonstration!I have seen with my own eyes the ULA+ in action - the actual real hardware. Fortunately, so did the camera in my phone. Here's a short (shaky) video …
... with my own eyes the ULA+ in action - the actual real ... short (shaky) video of the ULA+ being demonstrated by mcleod_ideafix at ...Needing a Timex 1000 ULAHello all! A friend of mine needs a Timex 1000 ULA. Anyone willing to sell one or who could point me at a place where he could buy some at a fair co…
Hello all!
A friend of mine needs a Timex 1000 ULA. Anyone willing to sell one or who could point me at a place where he could buy some at a fair cost?Issue 3 board... How to resurrect?Dear Everyone, Now I have a working 48k Issue 3, a sort of working Speccy+ (still having problems with the keyboard, more of that in another post) a…
... ) pattern of black pixels, which flash and alternate with the background ... RAM chips, and then the ULA, and then the Z80? I ...Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... and vertical black and white stripes as shown in the attached ... diagnosis:
1. The ULA is good, since I have ...Flash card memory things for the SpectrumWhat are those devices called that plug into the back of the Spectrum where you can load games from SD cards / Compact Flash cards etc? Which ones …
What are those devices called that plug into the back of the Spectrum where you can load games from SD cards / Compact Flash cards etc?
Which ones are the best?
Thanks in advance, mrmessyWhich 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 …
... of which 'may' need replacement ULA chips.
After a ... sure whether any ZX Spectrum ULA can be used, or whether ... each issue has specific ULA chip requirements. I'd be ... before heading down the new ULA route.
Cheers,
Issue 4A issuesHi all, I've been trying to get the Issue 4A board that came DOA with the case I purchased for my Frankenspectrum to work. I've recapped and socket…
... pattern without the periodic vertical stripes, and removing the Z80 results ... the same result, and the ULA works fine in my Issue ...Interface 1 ULA - what does it do and what not?I heard a rumour a few weeks ago: that the Interface 1 ULA does not control the Microdrive, but mainly the ROM and network. Many of us (like myself)…
... that the Interface 1 ULA does not control the Microdrive ... almost always we suspect the ULA.
So the ... is completely tied to the ULA.
No question ... it certain that the ULA causes the most problems?< ... ensure it is indeed the ULA that fails mostly?
Roger Jowett?Had this email to my ebay account, bearing in mind I had already replied that I only had 2 microdrive connectors left and I dont have any of the othe…
... /> mdrive to twin SD/compact flash adapter
fdd3000 PDS micro ... info on these?
spectra ula+ zx prism...
Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…
... requires a read from the ULA port (0xFE) with the high ... 's what toggles the border stripes between black and, erm, black ...spectrum +3 replacing the fdd with DivIDE and a 2GB flash driveComplete newbie here Is it possible to remove the +3 fdd and replace it with DivIDE and a 2GB flash drive all fitted into the vacant space? All info …
Complete newbie here
Is it possible to remove the +3 fdd and replace it with DivIDE and a 2GB flash drive all fitted into the vacant space?
All info appreciated.
CheersBlack Screen Spectrum 48kWas working ok, it came to me in a Fuller FDS keyboard, I had a nose inside and found a floating power lead connected to the keyboard, I removed that…
... boots, you get the lines flash down the screen and it ... />
Update: Tried another working ULA and it's not that ...ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... 0x40-0x7F then the ULA gets confused by the ... memory address generated by the ULA (who wants to read ... two addresses. Therefore the ULA reads the data from an ... is actually read by the ULA is the following:
ULA is busy drawing the border ...
