The Sinclair QL Forum

With so little new programming for release occurring on QLs, I don't think this is justified.

If you have ideas on how to get developers developing again, we're listening.

E.g. the SMSQ/E harddisk driver does not even support interrupts, which would be possible, if smoother background behaviour is desired. (And better background behaviour would be the only gain from DMA, it can not improve peripheral datarate on the Q60.)

Even the most rudimentary DMA ...

When a successor to the Q60 appears and the Q60 is a previous generation product three times over, maybe you'll consider releasing the files and equations as open source?

In reality, Stella is bound to the 68K architecture.


^^^ This

It also has other failings:

* It's wasn't finished
* There is NO Stella software
* Documentation doesn't say much about hardware expectations
* No toolchains for developers
* You'd be a user-base of 2-3 people


You should see the ...

as a conclusion smsq/e on a ql is not possible wothout severe work to the poor ql .


An expansion card with SMSQ/E in flash, some SRAM and a small CPLD to map the flash then SRAM at $0 would work without changing anything in the QL itself. I don't know if SMSQ/E at 7.5 MHz in a ~640K machine ...

The ‘questionable’ CPUs:

As the "unreliable US seller" in question I just want to clarify:

I had trays and trays of new, unopened 75 MHz 68060 with MMU. I was told that '060s are of questionable quality, so I should sell them at dubious quality prices. Less than £50 each. They're from a batch of 68LC060RC75 that were ...

The ROM port is active for any address in the lower 64K

Not quite. All the signals except the ROM SELECT signal alias every 64K. So it repeats all the way through address space with an extra pin that lets you divine if the access is in the first 64. So the ROM port is ALWAYS active but not ...

That the very first chip in the Coldfire line but no actual Coldfire CPU. It is a 68EC40 CPU with multiplexed bus. Nice chip, but not if you want to be much faster than a 68060.
...
You lose a lot of that by the emulation of the missing instructions. And you have misimplemented instructions that ...

It is 18x18, 223 pins, of which 17 are unused in general, further 29 are unused in my design. The PCB has holes for all 223.
It would be cool to have a one-piece socket. How do you press the pins into the nylon carcase? Manually?


On smaller single pieces, yes. If I get an order for a quantity I ...