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Emulating the 128KeIt occurs to me that I wasn't frequenting WoSf when I created the 128Ke standard, which means some people haven't heard of it. Here it is: [url]http…
... later machines), and contending all I/O on the 128 was almost ... software requires the +2A contention. I'm aware that some, possibly ... are there of software that [i]crashes[/i] when run under the ... contention patterns? The only place I know of where contention is ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... ;526380]a lot of developers I know switched to +3's ... be
so commercially I would expect that most 128k ... ...
[quote=Gasman]What I can say, by way of ... 128 contention model because the I/O contention in the 128 slows ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... gasman;526701]Sure - I appreciate that when it' ... establishing sensible default behaviour, I'm not exactly a ... br />
Oh I still think the +2A model ... ' one. Contending every I/O access is clearly hardware a ...
The main thing I take away from this is ... -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... have to deal with contended I/O on the 128/+2. Not ... the +2A (no I/O contention). But basically I'd avoid doing a ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... 3 EUR + postage.
I upload new version of firmware ... read from port 7FFD, fast I/O access and disable snow/raining ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... of its critical code. I'm adding more comments ... to the example I have provided.
[/QUOTE ... overhead. On the whole I would say it would ... "allowed" to disable interrupts (I say "allowed" since with Z80 ... that's waiting on I/O and there's nothing ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... I get that fixed. Printer emulation [I]should[/I] work, although it seems I ... />
[QUOTE=zub;520354]I already implemented paging support for ... port 14+256*[I]n[/I] outputs byte [I]n[/I] over the ... paging, and breakpoints on port I/O, but perhaps they can ... -
Playing SID music on AY??Hello. Some time ago, with occasion of another thread, I was asking about possibility of making a very certain thing - a SID emulator for Spectrum …
Nice :) I guess this relies on the ... it playing in real-time? I remember some tunes were a ... /> Is the board using normal I/O? I'd be very interested to ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... 3 EUR + postage.
I upload new version of firmware ... read from port 7FFD, fast I/O access and disable snow/raining ... -
So what is the best Spectrum?I've had a search and even though i can remember a similar thread somewhere I'll twist it a bit. Whats the best "unmodified" Spectrum? (modification…
[QUOTE=kgmcneil;529651] I didn't, for instance, ... poll.
[quote]If I had to chose now, Id ... the mandlebrot generation test that I ran to see how ... Its got full lower byte I/O decoding so even if you ... got around 30,000 free I/O addresses. And you can ...
