Search found 618 matches

by mk79
Wed Aug 12, 2020 10:56 pm
Forum: Hardware
Topic: QL-SD
Replies: 52
Views: 3489

Re: QL-SD

Looks great. Obviously I'll have one when ready. Just send the bits, I'll solder them on. I can also test with 2 UK QLs at the moment (and 3 German, but they're pretty much all the same). I don't have the means to program the chips before they're soldered in. Also, next prototype batch will probabl...
by mk79
Wed Aug 12, 2020 10:41 pm
Forum: Hardware
Topic: QL-SD
Replies: 52
Views: 3489

Re: QL-SD

Hi Marcel, Nice circuit board, are you going get the whole thing machine soldered, as manual soldering of over a 100 boards would be very tedious. Of course. The bottom will all be machine soldered, the top may be hand soldered or not, we'll see. Hand-soldering would have the advantage that both Mi...
by mk79
Wed Aug 12, 2020 4:40 pm
Forum: Hardware
Topic: QL-SD
Replies: 52
Views: 3489

Re: QL-SD

Just a small update, the hand-built prototype seems to work at least (still somewhat a bitch to solder) and already resulted in a few design changes. Now I need to update the core and software a bit more.

QLSD_ROM_Top_m.jpg
QLSD_ROM_Bottom_m.jpg
by mk79
Wed Aug 12, 2020 3:39 pm
Forum: The Off-Topic Section
Topic: ZX Spectrum Next Kickstarter 2 just launched
Replies: 4
Views: 165

Re: ZX Spectrum Next Kickstarter 2 just launched

I pledged for two Nexts as I like the design and don't really think they will depreciate in value. Due to memory alone it cannot be a competitor to the Q68, but it can be a pretty cool GoldCard style QL, maybe with some Aurora features. The MiSTer platform could beat the Q68, same or more RAM and mu...
by mk79
Wed Aug 12, 2020 3:03 pm
Forum: Software & Programming
Topic: Latest QPAC2
Replies: 7
Views: 226

Re: Latest QPAC2

I do too much to keep track of it all, sorry. I uploaded v1.48 that has been sitting on my drive for months to my page now.
by mk79
Sun Aug 09, 2020 9:39 pm
Forum: Software & Programming
Topic: Development Systems and Created Code (reentrant, ROMable, ...)
Replies: 27
Views: 1417

Re: Development Systems and Created Code (reentrant, ROMable, ...)

To understand what reentrance means: Start QPC2 a second time... Your boot program won't run (the WIN1_ is opened from first QPC2 AND LOCKED) As an aside, you can do WIN_REMV 1 in your boot program, so two QPCs can share the same WIN file (of course not at the same time, but a WIN will be unlocked ...
by mk79
Sun Aug 09, 2020 9:36 pm
Forum: Software & Programming
Topic: RCS (revision control system)
Replies: 17
Views: 558

Re: RCS (revision control system)

ql_freak wrote:B_u_t___i_t___i_s___t h e___S_t_a_n_d_a_r_d_! (now unfortunately –– I think [don't know it really] Mercury was better)
I think Mercurial is a thousand times better :( I'm really annoyed that GIT has become the standard.
by mk79
Sat Aug 08, 2020 8:23 pm
Forum: Hardware
Topic: Power supply
Replies: 9
Views: 487

Re: Power supply

Timing is not derived from the AC voltage, that is all from the crystal.
by mk79
Sat Aug 08, 2020 6:25 pm
Forum: Hardware
Topic: Power supply
Replies: 9
Views: 487

Power supply

As many here are not member of the QL facebook group I relay Charlie Ingley's new power supply prototype. Looks to cool to not share ;)

ql_power.png
by mk79
Sat Aug 08, 2020 5:40 pm
Forum: Hardware
Topic: Sinclair QL Design and Production Review by a CTO
Replies: 2
Views: 230

Re: Sinclair QL Design and Production Review by a CTO

I'm always in awe of your collection :-)