The Sinclair QL Forum

I wonder if those serial network modems would provide time?

https://www.simulant.uk/shop/retro-vint ... compatible

The other approach would be to use an RTC chip that actually does have a "seconds counter" and just disable the ZX8302 whenever a read access to those RTC addresses is made - and provide the data from the seconds counter RTC chip instead. No I2C needed - as the code in the QL is already se...

The Minerva MKII has I2C interface and does have an on board I2C RTC and RAM chip.

There is a project ongoing on here to recreate the PCB for that - the code is already in the Minerva ROM

I rescued a BBC Basic manual from a school I worked out - was for RM machines - but it contains the full list of commands. Also since picked up some books on the Z88 that cover BBC Basic - It's a good version of the language.

I watched those as well, wonder who got them?

tofro wrote: ↑Mon Feb 26, 2024 8:44 am Well, I think the answer to the OP's question is as simple as pragmatic: If it works, use it, if it doesn't, don't

Love that

The only issue I could see is that some of the older switching regulator circuits operate in the lower frequencies and might produce radiated interference that could affect the microdrives, but more modern designs use very high KHz or even MHz range and so this is less likely going to be an issue. A...

That's nice

No photo's I'm afraid - but if you look at the issue 5 board - there is a wire link or zero ohm resistor that connects pin 40 to VCC - it's marked on the PCB as a diode - and that's the first clue - this is the VCC for battery - which should be a wired or'd pair of diodes - one that from VCC to pin ...

The battery area was under the heatsink and near the modulator - but I've never seen a board fitted with it. I did make this mod myself on and old QL, but it involves some tweaking with the reset signal during power up - if I did it again I'd use one of the power management chips that locks out the ...