The Sinclair QL Forum

If it is a fast serial communication link then I think a fast pipe coupled dual core Qzero makes a lot of sense. It is. I might also add some fast dual port RAM as an additional means to exchange data. Just not sure right now if dualcore is the way to go. Since each CPU needs one separate SDRAM in ...

Many thanks for sharing! Wish the QL had come with Minerva-level OS right away...

(I am currently using two Q68s. One Q68 is used for calculation, display, keyboard and mouse I/O and the other just calculates.) The Qzero has two completely separate SDRAMs, so a loosely coupled dual core SMSQ/E machine like this, basically two QLs on one chip, would be feasible. My idea was to co...

When Peter Graf announced his Qzero I was genuinely excited. I thought: here is the beginning of something truly different and, in my opinion, different is the main attraction of TT’s proposals. I do admit that the Qzero had (still has?) some exciting potential and I feel sorry that I must have dis...

Several years ago, I tried a socalled "J2SE for Android" library which provided Swing and AWT classes for Android. Only used it with a relatively simple GUI though.

Many thanks for the update!

The 16550 was an 'improvement' which actually had a set of it's own problems but the main star of the show was a 16-byte receive and transmit FIFO. That's mildly put. If I remember correctly, the 16550 was so buggy that the FIFO could not be used at all. National Semiconductor later released the 16...

The idea that the designers probably had in mind was to use SER1 to drive the printer and SER2 for modems or other communication. And that wasn't too much of a bad idea when the QL was designed. It appears to me that one parallel port instead of the second serial was a much better idea, even at des...

I also think it wouldn't be good to leave the QL/GC/SGC hardware behind - making it even more complicated to distinguish the requirements.
Worth considering might be a default check for fragmentation at every driver startup or card change, if it does not consume too much time.

Not sure about that, as significant speed optimization was achieved by multisector operations.