Search found 991 matches

by mk79
Tue Aug 03, 2021 5:30 pm
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 71
Views: 7698

Re: Q68 QoE Ethernet Driver

janbredenbeek wrote:On SMSQ/E it could be as big as hundreds of K since the area below 1MB is only used for system variables and tables and slave blocks (which are of little use nowadays).
Just read this today. The common heap is still there as always, it‘s just not used until all „fast memory“ is exhausted.
by mk79
Mon Aug 02, 2021 4:57 pm
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 77
Views: 8465

Re: QL on the Raspberry Pi...?

Direct3D is a frigging complicated API, mapping that to another API, including all the vertex shader and pixel-shader stuff (QPC's are as minimal as they can get, but still), is nothing short of a miracle if you ask me. Anyway, all my Mac and Linux machines are headless and Wine doesn't seem to like...
by mk79
Sat Jul 31, 2021 4:10 pm
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 77
Views: 8465

Re: QL on the Raspberry Pi...?

Wow, that is quite an impressive feat from Wine then. Do the drivers behave differently when you maximize the window (i.e. have more than 1x magnification)? That was the reason for creating it in the first place, zoom behaviour on current Windows systems is very poor with the DirectDraw driver. No h...
by mk79
Thu Jul 29, 2021 3:45 pm
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 77
Views: 8465

Re: QL on the Raspberry Pi...?

No, I'm saying that I left the old screen driver ("DirectDraw") in mainly for Wine to work. Or does the DirectX based screen driver work under Wine, too?
by mk79
Thu Jul 29, 2021 2:45 pm
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 77
Views: 8465

Re: QL on the Raspberry Pi...?

OK. Then good thing I left the old screen-driver in for scenarios like these, I don't think the new one works under Wine.
by mk79
Thu Jul 29, 2021 10:13 am
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 77
Views: 8465

Re: QL on the Raspberry Pi...?

mhanias wrote:QPC2 works fine on Raspberry pi 400 and model 3B+. There are 3 steps
1. Install the excelent application Pi apps
https://github.com/Botspot/pi-apps
2. From Pi apps easily you install Box86 and wine
3. Using wine install qpc2
Wow. But probably not very fast?
by mk79
Tue Jul 27, 2021 11:06 pm
Forum: Hardware
Topic: My QL failed
Replies: 21
Views: 1543

Re: My QL failed

All chips are accessed during screen refresh because it also doubles as the DRAM refresh. Does this mean the infrared picture is pointing to a RAM bank selection problem or is it still a difference in RAM access rates due to code using one area more? It would be useful for future fault diagnosis to...
by mk79
Tue Jul 27, 2021 9:23 am
Forum: Hardware
Topic: My QL failed
Replies: 21
Views: 1543

Re: My QL failed

I think the hotter RAM bank may simply be down to the fact that video access that bank of RAM and never the other - even with dual screens enabled, and since that video RAM access is pretty much constant whilst the device is on (apart from flyback time), this could easily account for the chips runn...
by mk79
Tue Jul 27, 2021 9:13 am
Forum: Hardware
Topic: Live ROM board exit and dead QL result
Replies: 4
Views: 217

Re: Live ROM board exit and dead QL result

Yes, definitely ZX8301, it's not just vulnerable regarding the RGB lines, it's all lines, including the data and address lines that are on the ROM port. Killed one or two while developing QL-SD. If you're quick enough removing the power it can survive (<10s or so) before it suffers a fatal heat death.
by mk79
Fri Jul 09, 2021 8:42 am
Forum: Hardware
Topic: QL-VGA v2
Replies: 67
Views: 5394

Re: QL-VGA v2

Yes, "monitor mode" has full 256 lines. So on JSU QLs the F1/F2 selection actually matters as there are 4 possible modes. Issuing a "mode 8" after booting with F1 stays in monitor mode, i.e. 256 lines with 8 colours, while selecting F2 from the start gets you 192 lines in 8 colou...