Search found 166 matches

by dfzx
Tue Jul 23, 2019 10:39 am
Forum: Hardware
Topic: broken 48K issue 2
Replies: 10
Views: 128

Re: broken 48K issue 2

Can I just connect +5V to pin5 of IC23 without removing any connection? If you mean to ask whether you need to remove the power while you make that IC23 connection, yes, do it with the machine powered off . I seem to recall someone else started poking at pins with the machine powered up a few month...
by dfzx
Sun Jun 16, 2019 9:58 am
Forum: Games/Software
Topic: Mr Do coming soon to Spectrum
Replies: 33
Views: 2164

Re: Mr Do coming soon to Spectrum

I had no idea what anyone was talking about. Mr Do? Never heard of him! Then I gave it a try - it's Digger ! Why did no one say so?! I played that for hours when the free version came out on UNIX platforms. This is a fantastic achievement, really playable, despite the limitations of the humble Specc...
by dfzx
Fri Jun 07, 2019 8:21 am
Forum: Programming
Topic: ZX Spectrum Game Development Noob Questions
Replies: 27
Views: 1195

Re: ZX Spectrum Game Development Noob Questions

Anyways, I was thinking of trying to set up some small start of a game on the spectrum with Z88DK,... Shameless plug: my Z88DK getting started with Spectrum development guide is here . 3. Does someone know if there's a Z88DK template / code skeleton / boilerplate code somewhere to be found that wou...
by dfzx
Thu Jun 06, 2019 4:03 pm
Forum: Programming
Topic: DEVASM-Z80 - Cross Development Environment in Assembler for ZX-Spectrum based on PASMO
Replies: 32
Views: 1290

Re: DEVASM-Z80 - Cross Development Environment in Assembler for ZX-Spectrum based on PASMO

utz wrote:
Thu Jun 06, 2019 2:47 pm
Distribution of PASMO without source is technically also illegal, since it's released under GPL.
GPL doesn't require you to distribute the source with the binaries, only that you offer access to the source code.
by dfzx
Mon May 27, 2019 2:38 pm
Forum: Announcements
Topic: The Spectrum Show Episode 84
Replies: 2
Views: 186

Re: The Spectrum Show Episode 84

I watched 55 and 56 last night. Still some way to go before I've caught up with your current output.

Enjoying every minute of it. :D
by dfzx
Wed May 22, 2019 10:21 am
Forum: Games/Software
Topic: Tool-assisted speedruns
Replies: 5
Views: 377

Re: Tool-assisted speedruns

djnzx48 wrote:
Wed May 22, 2019 9:02 am
OK, one more.
Ersh wrote:
Wed Feb 27, 2019 12:42 pm
If one would turn off the music & sound effects, use all shortcuts, no safe strats and optimal movement I think it would be possible to get pretty close to 2 minutes.
Here's 1:47.30

That's amazing. I love it... :lol:
by dfzx
Wed May 22, 2019 7:53 am
Forum: Programming
Topic: Plasma Squares
Replies: 16
Views: 828

Re: Plasma Squares

arkannoyed wrote:
Tue May 21, 2019 2:26 pm
At a very basic level;
Yep, that's the one, thanks! :)

I like it, the technique's clever in its simplicity.

You're feeling pleased because you did something clever. I'm feeling pleased because I now kinda understand how you did it. So on our respective levels, we're both now happy. :lol:
by dfzx
Tue May 21, 2019 2:10 pm
Forum: Programming
Topic: Plasma Squares
Replies: 16
Views: 828

Re: Plasma Squares

I thing I always seem to need with the code you present is a description of how it works. I don't mean on a Z80 instruction level (the code is well commented) but more high level: how does that work? The comments include references to a plasma table, masks, maps, and other stuff, but I have no clue ...
by dfzx
Sun May 19, 2019 9:09 am
Forum: Hardware
Topic: Issue 4A with no colour!
Replies: 53
Views: 1597

Re: Issue 4A with no colour!

Liveinabin wrote:
Sat May 18, 2019 4:00 pm
I’m glad it’ll belong to someone who can fix it or at least revive another Spectrum with it.
Having quietly followed the saga for 5 pages of comments, I'm now looking forward to Mark telling us all what's wrong with the flippin' thing!
by dfzx
Sun Apr 21, 2019 11:24 am
Forum: Hardware
Topic: A device with direct memory access?
Replies: 12
Views: 585

Re: A device with direct memory access?

At this point, external hardware can then freely use the busses to read or write to any memory location. If a bit of hardware took control of the busses, how quickly could it write into memory? Suppose I wanted such a device to write a 32K image into the top 32K of memory. Would it need to write by...