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If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…
... be able to keep video timing relatively consistent, though I'm ... sure whether to introduce the contention timing to the lower 16k of ... -
Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …
... track audio loop with some timing and r/w control as ... based CPLD to replace a ULA in Spectrum/IF1/Spectrum128 etc ... -
5C Horizontal timing vs 6C horizontal timing.Hi all, Just considering the timing difference in the video signal between the 5C and the 6C where the 6C ULA seems to have 50% longer horizontal …
there were timing improvements i believe on the ... 6c would also be the ULA in the issue 3 so ... ?
have you got the ULA book by chris smith .. very ... 's do have the 6C ULA and they have two slightly ... -
5C Horizontal timing vs 6C horizontal timing.Hi all, Just considering the timing difference in the video signal between the 5C and the 6C where the 6C ULA seems to have 50% longer horizontal …
The 6C001E ULA versions are a lower power ... resistor values.
The timing of the colour burst part ... was improved in the 6C001E ULA versions. Due to the way ... video signal specification, the 6C001E ULA versions are better.
5C Horizontal timing vs 6C horizontal timing.Hi all, Just considering the timing difference in the video signal between the 5C and the 6C where the 6C ULA seems to have 50% longer horizontal …
... ="mark8bit;981902"]there were timing improvements i believe on the ... of compatibility in the ULA book. Thanks for adding ... [quote="1024MAK;981904"]The 6C001E ULA versions are a lower power ... video signal specification, the 6C001E ULA versions are better.
...Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... the basis of the video timing system. These were used in ... the 128k models because the ULA was changed to output digital ... (+ ‘bright’) signals. The 16k/48k/+ ULA did use digital RGB signals ...Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... counter outputs up to the ULA for video address generation (ala ... version, you needed a different ULA. If you restrict yourself to ... high speed with signal critical timing and complex circuitry are hard ... 6845 and then having separate ULA or gate array chips for ...spdif adapterIs there some kind of adapter that would allow direct loading of data from spdif? I mean lossless data like dat/cd.. (to avoid long and unreliable l…
... 'd still need to avoid ULA contention though I guess, and possibly ...Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…
... due to different ULA chips having slightly different timing for the multiplexer ... the later ULA chips to improve the reliability of the timing for ...Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…
... due to different ULA chips having slightly different timing for the multiplexer ... the later ULA chips to improve the reliability of the timing for ... that would mean the ntsc ULA was originally meant for an ...
