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Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... the border colour in the ULA starts with a random value ... ROM is not working, the ULA is faulty (rare) or another ... preventing the CPU, ROM and ULA communicating.
There is ... it is a dirty/contaminated chip pin. Have you opened your ... -
Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
Ok, given that the ULA has almost probably been ruled ... />
When you get your ULA back, there is a way ... 14 (top right) on this chip. Ensure the wire isn't ... -
Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... ;761124]Ok, given that the ULA has almost probably been ruled ... />
When you get your ULA back, there is a way ... 14 (top right) on this chip. Ensure the wire isn't ... pedantic? Well, sometimes a RAM chip goes faulty in such a ... -
Heatsink's for ZX SpectrumAre heatsinks usefull for the chips are used in ZX Spectrum's On eBay I saw some heatsinks for ULA's, 3 for +/- 8 dollar's. And I want to know are th…
... I saw some heatsinks for ULA's, 3 for +/- ... "chip" already has a heatsink.
The ULA does ... run hot, but ULA failure is not ... case of the chip, the actual chip is right in ... fail.
The custom chip in a +2A / +2B / ... -
48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... six versions of the Spectrum ULA.
5C102E
chip (which are later connected ... like the 6C001E-6 ULA? The 5C112E screen matrix ... /> For the changes to ULA I/O port ($FE) reads ... of the imperfections of the ULA (non-centred screen, etc ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... space rather than the 16K ULA/RAM address space? If not ... , I'd like to support ULA+ but it can't be ... to simulate it on a chip (foregoing perfect timing accuracy for ... suggested before, sticking a spare ULA and RAM on a board ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... 7FFFh. So as the logic chip on the SPECTRA can be ... . The normal one (which the ULA would use to produce a ... during the time that the ULA is not generating the display ... normal display, all before the ULA starts scanning the RAM again ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... /> Now a modern chip that just emulates the ULA and external RAM ... , become contended - would the external ULA/RAM setup be able to ... -
Why didnt 48k ingame music work?There were very few games that had ingame 48k music, a couple I can think of were Kung Fu Master and Manic Miner but it always sounded drained and no…
... constantly send data to the ULA to make a (crude) AC ... Spectrum had no fancy sound chip, if you have the Z80 ... -
Why didnt 48k ingame music work?There were very few games that had ingame 48k music, a couple I can think of were Kung Fu Master and Manic Miner but it always sounded drained and no…
... to send data to the ULA to make an AC waveform ... /> The 48k had no sound chip, if you have the CPU ...
