Search found 24 matches

by Magnus
Mon Mar 25, 2019 1:25 pm
Forum: Showcase your work!
Topic: I built a game in BASIC
Replies: 27
Views: 1403

Re: I built a game in BASIC

Had a go at it, it's a nice game and very responsive considering it's written in BASIC. I didnt managed to see all the levels but broke into the game so I could see them, along with the victory screen.. :oops: So was it completely written on a Speccy? If so, the discussions about getting it to work...
by Magnus
Mon Mar 25, 2019 1:17 pm
Forum: Showcase your work!
Topic: I built a game in BASIC
Replies: 27
Views: 1403

Re: I built a game in BASIC

Sorry if this was a bit cryptic, but if you add the line I suggested, the program would print 255 in the upper left corner of the screen if my theory is correct and bit 6 is set. It doesn't solve anything though, the emulator should be modified in that case. Still not entirely sure what this is mea...
by Magnus
Mon Mar 25, 2019 11:04 am
Forum: Showcase your work!
Topic: I built a game in BASIC
Replies: 27
Views: 1403

Re: I built a game in BASIC

I just tried this, on ZXDS. Looks nice but it doesn't respond to the suggested controls. Perhaps I'm doing something wrong? I don't know, but it could be the same issue that I had in my emulator, namely that when the keys are polled (beginning at line 170), the value that is matched includes the ea...
by Magnus
Mon Mar 25, 2019 4:39 am
Forum: Showcase your work!
Topic: I built a game in BASIC
Replies: 27
Views: 1403

Re: I built a game in BASIC

I just tried this, on ZXDS. Looks nice but it doesn't respond to the suggested controls. Perhaps I'm doing something wrong? I don't know, but it could be the same issue that I had in my emulator, namely that when the keys are polled (beginning at line 170), the value that is matched includes the ea...
by Magnus
Fri Mar 08, 2019 9:07 pm
Forum: Programming
Topic: The Definitive Programmer’s Guide to Using the Floating Bus Trick on the ZX Spectrum
Replies: 31
Views: 2655

Re: The Definitive Programmer’s Guide to Using the Floating Bus Trick on the ZX Spectrum

Thank you for an excellent guide (and the effort to investigate this issue)!

My emulator now handles the +2A/+3 floating bus correctly I think. Here it is running "Woody’s Special" test (epileptics look away ;)):

Image.
by Magnus
Sun Jan 06, 2019 6:56 pm
Forum: Emulators
Topic: Retro Virtual Machine 2.0 beta 1 released
Replies: 30
Views: 2330

Re: Retro Virtual Machine 2.0 beta 1 released

Great work, very nice GUI with an impressive attention to detail! I saw this a couple of years ago on OSX and look forward to playing with it on my Windows machine. Strangely, the emulator window freezes on my external display which is connected via DisplayLink. I guess there is some driver incompat...
by Magnus
Tue Jul 31, 2018 7:53 am
Forum: Emulators
Topic: Show previous instruction for breakpoint in debugger
Replies: 12
Views: 1179

Re: Show previous instruction for breakpoint in debugger

And it's a first instruction of some block of code. So I may suspect some JP or CALL was before it. But how can I find it without crazy guessing? Does any emulators stores adresses of executed commands in some log so I could check the log and find a few instructions before my breakpoint? Thanks for...
by Magnus
Mon Jun 25, 2018 3:23 pm
Forum: Hardware
Topic: ZX Spectrum Next
Replies: 53
Views: 6305

Re: ZX Spectrum Next

The next is far from finished, even when the cased units ship work will continue on it. Comparing it to something that's been out for near a couple of years now is a bit silly. I find the comparison interesting, at least while I'm waiting for my Next ;). Anyway, you have a good point concerning the...
by Magnus
Sun Jun 24, 2018 1:32 pm
Forum: Hardware
Topic: ZX Spectrum Next
Replies: 53
Views: 6305

Re: ZX Spectrum Next

Thanks for the link. I browsed that thread, but missed that particular discussion. Anyway, I suppose I was a bit naive, but the Next kickstarter could have been more clear on the subject of compatibility. I realise that it probably is no big deal for the vast majority of users.
by Magnus
Sun Jun 24, 2018 11:55 am
Forum: Hardware
Topic: ZX Spectrum Next
Replies: 53
Views: 6305

Re: ZX Spectrum Next

Cons: Somewhat bad compatibility, and gets worse using HDMI due to timings. A lot ot things don't work or have some glitches (Nirvana engine games, demos with strict timings). ZX-Uno is miles ahead in this regard. Can you elaborate on the compatibility issues, and in what way ZX Uno is better? I'm ...