... -states will tell you the timing of the machine you're ... 's required, just state 'requires 128K'.

... .000 MHz one - does this clock the video circuits at all ... demo (thats gorgeous using ula timing to mask out half of ...

... big difference in clock frequency between the AY in 128K Spectrums?

[QUOTE=Mike Wynne]128k spectrum 1.7734 MHz
clock - probably as a result of ... /> If the clock frequency is the same between the 128K, the +2 ...

... remember Winston saying something about clock frequency not being a big ... a different crystal than a 128K Spectrum.

Where it ...

... (contended) clock signal on the edge connector, so the timing is screwed ... interface should use its own clock.)[/QUOTE]

So it ... contended RAM because the effective clock frequency will keep changing!

... account for that in my 128K+Fuller box experiment, and it ... (contended) AY had a different clock speed to the internal one ... chips running off the same clock. Use a couple of the ...

... is different hardware timing between 48K and 128K Spectrum that's why ... my notes and found the 128K version was only on cassette ...

... Interface for ZX48K (optionally for 128K models of course). [/b]
128K/Pentagon, and it would have ... suspect (although a pity multicolor timing would be bad). But not ... demos slowing down _twice_ on 128K make a sad view.

... Interface for ZX48K (optionally for 128K models of course). [/b]
128K/Pentagon, and it would have ... suspect (although a pity multicolor timing would be bad). But not ... demos slowing down _twice_ on 128K make a sad view.

... 8 to give an AY clock of 1.764MHz). Multiplying ... a 14.118MHz master clock crystal which I would ... value for the master clock if that were the ... I assume that the timing constants for the ROM routine ... a nominal measured CPU clock speed of 3.526812021213907MHz.< ...

... they wanted.

The timing is derived from the 14 ... leads to a nominal cpu clock of 3.528 MHz and ... nominal AY clock of 1.764 MHz.

... of being stuck with 48k, 128k, etc., could a "player" be ... a ctc to generate the timing from which you would get ...

... old 128k. it definately would have corrupted level data at the clock ...

... 't know anything about the timing requirements for the processor or ... the processor or ULA to clock data out? I find it ...

... MHz clock. So it is basicly Spectrum 128kB.[/QUOTE]
Pentagon 128K ...

... proper PAL interlaced image, with timing pulses on alternate frames to ... as is done with the 128K?

Edit: I see ...

... expected frame of the internal clock. One of the blocks of ... was designed so that the timing between the loading of the ...

... was designed so that the timing between the loading of the ... clock stops ticking during tape loading, so why would the timing between ...

... advanced programs, like Colossus4 or Clock'89...

I used ... ON! Also, I used 128k version of Clock'89 (i.e. disk ...

... typically also come with a clock).

On the other ... example, the Spectranet saves a 128K snapshot in about 2 seconds ...

... cycle for Z80, a half clock cycle shorter than normal memory ... /O ports. There are some timing requirements to observe when video ...

... cycle for Z80, a half clock cycle shorter than normal memory ... /O ports. There are some timing requirements to observe when video ...

... port on a ZX Spectrum 128K heatsink model to send data ...

... ram. I know that the 128K and +2 will snow when ... the following, all speed fixed - timing fixed - interrupt fixed

... . Some gfx glitches due to timing (border stuff mostly) EDIT: It ... the Wolfenstein (and other timing sensitive) parts (Pentagon Timing ofcourse), otherwise works ... to work on the normal 128k spectrums (well original 128 and ...

... the Wolfenstein (and other timing sensitive) parts (Pentagon Timing ofcourse), otherwise works ... to work on the normal 128k spectrums (well original 128 and ...

... 'but why not do a 128K version'. :-) I think we've ... timing right though. If I was making a game for the 128K ...

... switch a Z80 clock between [B]unrelated[/B] clock sources (believe ... with ULA. That could simplify clock switch circuit a lot - ... a previously divided clock - remember that ULA's clock output isn' ... . version sounds nice, but timing of control signals may change ...

... compatible in HW with 48/128k, but using modern technology - keyboard ... very close, with passing CPU clock through FPGA
(otherwise no ...