The Sinclair QL Forum

Derek_Stewart wrote:I can source all the Q60 parts very easily, even the 68060 CPUs.

Really ? I did manage to find one 68060RC50 (not the XC experimental CPU (1F43G or 1G65V masks), but the release/fixed RC one with 0E41J mask) years ago, but it was not cheap; I wonder how pricey these little gems would be nowadays...

Another suggestion, perhaps: a daughter board which would plug into the FPGA socket that is responsible for the video signals generation, the daughter board in question either providing a socket to plug the old FPGA into, together with another modern (SMD) FPGA to generate all the VESA ...

Would it be too much to design a revised and modernized QX0 PCB with these features? The PCB could come with sockets but no ICs and people could simply transfer their current ICs across to the new board? You could use it as an opportunity to update the video, power and memory sections... I think a ...

'Most' Samsung monitors made for the last four or five years list a minimum frame rate of 56Hz. They all display 24, 25, 29.98, 30, 50, 59.97 and 60 Hz successfully, even though that is not listed in the spec. The same chipset is used in a few Samsung TVs. The monitor chipset is a cut down version ...

I have not been "harsh" in any way. I have been factual , period.
You announced the chips will fail with most monitors, without having tried even one. There was nothing factual in that harsh negative announcement.
I wrote "most", not "all", and If you want facts, just look at the specifications ...

T.G. your reply just shows that you learned nothing. You had stated in public that most modern LCD monitors will fail with the new chip. Without testing a single device. If that is not very negative, then what is? Prove me wrong: give me the model numbers of the monitors you successfully tested the ...

T.G. your reply just shows that you learned nothing. You had stated in public that most modern LCD monitors will fail with the new chip. Without testing a single device. If that is not very negative, then what is? Prove me wrong: give me the model numbers of the monitors you successfully tested the ...

I proposed an alternative solution (800x600).
800x600 is not feasible, based on the dot clock limitation Peter said he was already up against.

512x256x72 =​ 9,437,184 dot clock
​800x600x50 =​ 28,800,000 "
​800x600x25 =​ 14,400,000 "
​800x600x20 = 9,600,000 "

Excepted that the Q60 resolution is ...

Alas, 50Hz is totally non-standard for VESA 1024x768 (which is normally 60, 70 or 75Hz)
Of course it is not a standard VESA mode. The timings are a compromise, worked out in many practical tests with about ten flatscreen monitors and TVs. Care to give the models, please ?

and most modern LCD ...

The new video controller creates a 1024x768 signal for the monitor. The Q40/Q60 resolutions are matched to pixels exactly, with the consequence that one third of the screen remains black. The vertical refresh rate was reduced to 50 Hz.
Alas, 50Hz is totally non-standard for VESA 1024x768 (which is ...