Search found 194 matches

by Alcoholics Anonymous
Tue Aug 29, 2023 8:36 am
Forum: ZX Spectrum Next
Topic: NEXT Update
Replies: 18
Views: 1284

Re: NEXT Update

You don't have to remind me, that the SpecNext propaganda machine is very strong. As an individual, if you try to go up against it, you'll be crushed. Since you know the project, ask Victor if he took Miguel's code from ZX Uno and used it in ZX Next ? Woe is you. Clearly you must be a martyr. Prete...
by Alcoholics Anonymous
Wed Aug 23, 2023 6:17 am
Forum: ZX Spectrum Next
Topic: NEXT Update
Replies: 18
Views: 1284

Re: NEXT Update

The comments on the last update are definitely the height of idolatry. Every new delay is followed by messages of endless adoration of the "great leader(s)". Orwell would be truly proud... Most people are understanding when there is reasonable cause for delay. Communicating what is going ...
by Alcoholics Anonymous
Thu Apr 20, 2023 5:03 pm
Forum: FPGA Devices
Topic: Playing Robotics on ZX UNO+
Replies: 37
Views: 2998

Re: Playing Robotics on ZX UNO+

I finally got around to putting the kempston decoding on port df into the mainline spectrum next core and I was a little surprised with what I found. The original problem raised in this thread was that some Spanish games were using port DF instead of 1F to read the kempston joystick. On interfaces t...
by Alcoholics Anonymous
Sun Sep 11, 2022 7:06 am
Forum: ZX Spectrum Next
Topic: 2022-09-07: System/Next 22.09 (=Core 3.01.10, FW 1.43 and NextZXOS 2.07k) released
Replies: 5
Views: 328

Re: 2022-09-07: System/Next 22.09 (=Core 3.01.10, FW 1.43 and NextZXOS 2.07k) released

Updating is quite straightforward. It might help to understand a little about how the machine works to gain some confidence:

https://specnext.com/forum/viewtopic.ph ... 58b9ad0a07
by Alcoholics Anonymous
Sun Sep 11, 2022 6:48 am
Forum: ZX Spectrum Next
Topic: n-go not running "Old Tower" game as it should
Replies: 21
Views: 1234

Re: n-go not running "Old Tower" game as it should

So now i have to run in VGA now Im sad now.... Version 4 of the core will have correct hdmi video timing but that won't be coming for a while. Spectrum clones don't attempt hdmi for a reason -- modern tv standards are incompatible with spectrum video signals. The Spectrum Next is a spectrum interna...
by Alcoholics Anonymous
Sun Sep 11, 2022 6:22 am
Forum: ZX Spectrum Next
Topic: Loading via tape
Replies: 8
Views: 1759

Re: Loading via tape

Once you've got a proper tape cable (+3) and you take care of the possibility that your tape deck puts out stereo audio instead of mono as they should (the new ones do this), it is down to tape volume. The ear circuit in the Next is less sensitive than most of the original machines which means you n...
by Alcoholics Anonymous
Wed May 04, 2022 8:14 am
Forum: ZX Spectrum Next
Topic: how far can the graphics go.
Replies: 21
Views: 1518

Re: how far can the graphics go.

nope, as the notorious TS-conf was made for much, much older and weaker FPGA and is more powerful as gaming platform in most respects Definitely not. For the main question, you need to stop thinking like an emulator author and understand how hardware works. The maximum resolution display by the Spe...
by Alcoholics Anonymous
Wed May 04, 2022 4:43 am
Forum: ZX Spectrum Next
Topic: RAMS update? Firmware update?
Replies: 11
Views: 880

Re: RAMS update? Firmware update?

The new version with frogger has been released. Link in the last post.
by Alcoholics Anonymous
Fri Apr 29, 2022 3:50 am
Forum: Emulators
Topic: New discovery on Z80 interrupts
Replies: 18
Views: 2016

Re: New discovery on Z80 interrupts

IFF2 is copied to IFF1 during M1T2 of next instruction after RETI/RETN, therefore a maskable interrupt cannot occur immediately after a non-maskable interrupt that ends with RETN This is very unlikely from a hardware standpoint. This would require extra circuitry to carry forward a signal into the ...
by Alcoholics Anonymous
Fri Apr 29, 2022 3:27 am
Forum: Emulators
Topic: New discovery on Z80 interrupts
Replies: 18
Views: 2016

Re: New discovery on Z80 interrupts

The NMI line is not sampled during the NMI response. Therefore it is not possible to produce two chained NMI responses. The CPU ignores NMI requests during the NMI response. That is, it is not possible to produce one NMI response (11 T-states) and then, immediately after, another one. The nmi is no...
by Alcoholics Anonymous
Fri Apr 29, 2022 2:44 am
Forum: ZX Spectrum Next
Topic: how far can the graphics go.
Replies: 21
Views: 1518

Re: how far can the graphics go.

I can't find any other programming language that is fast and works well on it (this Nextbasic is very slow). if you want to do a little more then the only option left is nexzbuild or asm. You can also program in c using z88dk. Many of the dot commands and some software like nextdaw, magnetic scroll...
by Alcoholics Anonymous
Wed Apr 27, 2022 9:58 pm
Forum: ZX Spectrum Next
Topic: how far can the graphics go.
Replies: 21
Views: 1518

Re: how far can the graphics go.

The Spectrum Next itself has limitations that are imposed by the fpga capacity and a decision to root the design in a "what could have been possible in the 1990ish time frame idea" by logically extending the spectrum architecture. Most of the fpga is actually taken up with circuitry for ba...
by Alcoholics Anonymous
Wed Apr 27, 2022 9:44 pm
Forum: ZX Spectrum Next
Topic: Switching Distros
Replies: 4
Views: 335

Re: Switching Distros

Some information about updates and distributions: https://www.specnext.com/forum/viewtopic.php?p=13646#p13644 If you have two separate sd cards with their own distributions then it's a simple matter to go back and forth. The one thing you need to do is to remember to update the hardware by pressing ...
by Alcoholics Anonymous
Wed Apr 27, 2022 9:29 pm
Forum: ZX Spectrum Next
Topic: Yellow button on N-G0
Replies: 6
Views: 818

Re: Yellow button on N-G0

For beta testing there is an instructional post here about updating and a link amongst the instructions to the repository:

https://www.specnext.com/forum/viewtopi ... 646#p13644
by Alcoholics Anonymous
Thu Apr 21, 2022 12:03 am
Forum: ZX Spectrum Next
Topic: Tiles with NextBasic ?
Replies: 7
Views: 486

Re: Tiles with NextBasic ?

A program that lets you draw sprites, tiles, etc on the zx next itself: https://leeorg.itch.io/krystle-designs There are many pc tools on github and gitlab written for the pc that do image conversions to the Next. One online on is this one: https://zx.remysharp.com/tools/ They tend to be less geared...
by Alcoholics Anonymous
Wed Apr 20, 2022 6:39 am
Forum: ZX Spectrum Next
Topic: Tiles with NextBasic ?
Replies: 7
Views: 486

Re: Tiles with NextBasic ?

The text above your screenshot in that documentation is relevant so I will quote it here: Tiling commands For layer 2 and lo-res modes, there are new commands available to draw complete screens (or sections of a screen) from a set of tiles and a tilemap. Tiles are either 8x8 pixels in size or 16x16 ...
by Alcoholics Anonymous
Wed Apr 20, 2022 5:18 am
Forum: ZX Spectrum Next
Topic: Yellow button on N-G0
Replies: 6
Views: 818

Re: Yellow button on N-G0

The (supposed to be) yellow button closest to you is the multiface nmi button. The (supposed to be) green button in the middle is the divmmc nmi button. The red button furthest away is the reset button. Hold that for a short time for a soft reset (like power cycle of spectrum) or a long time for a h...
by Alcoholics Anonymous
Tue Apr 12, 2022 7:45 pm
Forum: ZX Spectrum Next
Topic: Interrupt with NextBasic ?
Replies: 7
Views: 363

Re: Interrupt with NextBasic ?

I can already move sprites and copper with reg commands. I would also like to have an independent movement in the repeat loop for an instruction with an interrupt. I don't know exactly what you mean but there is no way to execute basic commands on interrupt. Basic runs as fast as it can and the bes...
by Alcoholics Anonymous
Tue Apr 12, 2022 7:02 pm
Forum: ZX Spectrum Next
Topic: RAMS update? Firmware update?
Replies: 11
Views: 880

Re: RAMS update? Firmware update?

All makes sense, I thought as much. Good to hear, I hope they keep developing RAMS, as I say I like it, prefer it to MAME, it's simple to use. It is MAME inspired, that's for sure and technically it's the exact same idea where original code is running and there is adaptation code that maps graphica...
by Alcoholics Anonymous
Tue Apr 12, 2022 6:01 pm
Forum: ZX Spectrum Next
Topic: N-Go in stock at manuferhi.com
Replies: 65
Views: 3728

Re: N-Go in stock at manuferhi.com

The correct installation of the pi looks like this:

Image

If you zoom in you can see my crap soldering job with a $5 soldering iron :)
by Alcoholics Anonymous
Thu Apr 07, 2022 5:37 am
Forum: ZX Spectrum Next
Topic: Interrupt with NextBasic ?
Replies: 7
Views: 363

Re: Interrupt with NextBasic ?

It may be helpful to read the "New Commands and Features" documentation here: https://gitlab.com/thesmog358/tbblue/-/tree/master/docs/nextzxos Sprite commands start on page 7 and there's something about automatic sprite movement on page 9. This document applies to the very latest NextZXOS ...
by Alcoholics Anonymous
Thu Apr 07, 2022 4:39 am
Forum: ZX Spectrum Next
Topic: Pattern autoincrementing - or not?
Replies: 5
Views: 289

Re: Pattern autoincrementing - or not?

Can't help with your query, but amen to that sentiment! I've been diligently holding off doing any Next development until I have one, but I don't want to wait another year. There is a lot to the Next. I highly recommend becoming familiar now -- the emulators are partial but they do implement most c...
by Alcoholics Anonymous
Thu Apr 07, 2022 4:34 am
Forum: ZX Spectrum Next
Topic: Pattern autoincrementing - or not?
Replies: 5
Views: 289

Re: Pattern autoincrementing - or not?

Pattern 0 is fine, Pattern 1 is a corrupt mess. This is the code: ld bc,$303b ; this sprite control port again xor a ; first sprite out (c),a ; select it ld hl, tiles ; 16 tile graphics stored here ld c,$5b ; copying sprite data goes via this port apparently ld b,0 ; 2 sprites worth otir If I split...
by Alcoholics Anonymous
Thu Apr 07, 2022 4:08 am
Forum: ZX Spectrum Next
Topic: RAMS update? Firmware update?
Replies: 11
Views: 880

Re: RAMS update? Firmware update?

Whilst I remember, how am I getting Frogger working again then please? ;-) I take it that is some kind of insider release of Rams you have AA? I know I can play it on mame but the Next is really good for the old ports, much better in a way. Yes I have a special version. They're intending to release...
by Alcoholics Anonymous
Thu Apr 07, 2022 2:46 am
Forum: ZX Spectrum Next
Topic: Next not coming until June 2023
Replies: 14
Views: 1049

Re: Next not coming until June 2023

But it is their own fault. Instead of making the second Kickstarter a quick turnaround of the original Next hardware, which was what was originally promised, they started to tinker with it and make “improvements”, adding in things like 2MB of memory as a stretch goal. Well no -- it is clearly state...