Search found 753 matches
- Mon May 13, 2024 9:38 pm
- Forum: ZX Spectrum Next
- Topic: RAMS update? Firmware update?
- Replies: 15
- Views: 1009
Re: RAMS update? Firmware update?
I think it depends what hardware is on each arcade board. Golden age boards of that era can have some quite funky programmable sound generators, for example, that can't be done in AY, and can only be approximated with 8bit sampled sound. Boards that use vector graphics, a greater colour depth per pi...
- Mon May 13, 2024 9:18 pm
- Forum: ZX Spectrum Next
- Topic: RAMS update? Firmware update?
- Replies: 15
- Views: 1009
Re: RAMS update? Firmware update?
RAMS is individually coded with hook routines for specific games, just as MAME has a hardware driver for each individual board. You can't just drop a random ROM for a Z80 board that works in MAME into RAMS, as it will ignore it. The only ones that work are the ones mentioned on the RAMS page of the ...
- Mon May 13, 2024 8:58 pm
- Forum: ZX Spectrum Next
- Topic: SNES -> Atari adapter doesn't work
- Replies: 8
- Views: 213
Re: SNES -> Atari adapter doesn't work
If both ends are only using the lowest common denominator pins 1/2/3/4 for directions, pin 6 for single fire, and pin 8 for ground, then pretty much every computer/console will work with pretty much every stick/pad (apart from Amstrad SJS-1 sticks and Amstrad Spectrum +2/+2A/+3 computers, which have...
- Mon May 13, 2024 7:18 pm
- Forum: ZX Spectrum Next
- Topic: SNES -> Atari adapter doesn't work
- Replies: 8
- Views: 213
Re: SNES -> Atari adapter doesn't work
No problem! Unfortunately the physical wiring is defined by the soldered connections and components on the board. That's the same for the Xberry Pi, Next ks1, Next ks2 and N-GO. The other side of the interface, how the Z80 sees the controller data through I/O ports or nextregs (kempston/sinclair/cur...
- Mon May 13, 2024 3:13 pm
- Forum: ZX Spectrum Next
- Topic: SNES -> Atari adapter doesn't work
- Replies: 8
- Views: 213
Re: SNES -> Atari adapter doesn't work
The Xberry Pi, like Nexts and N-GOs, uses megadrive/genesis wiring and select mux protocol. This means that it puts +5V on pin 5, second fire on pin 9, and pin 7 is an output pin carrying a strobed 3.3V low current logic clock signal for select, that moves a state machine in the controller through d...
- Tue May 07, 2024 5:04 pm
- Forum: Programming
- Topic: Bank switching issue
- Replies: 38
- Views: 1445
Re: Bank switching issue
was presumably intended for CP/M use. I concur. The banking arrangement has a close correspondence with the suggested internal architecture of the banked version of CP/M 3. CP/M 3 was available in two versions, banked and non-banked, and in the banked version they put some contraints on which parts...
- Sun May 05, 2024 12:58 am
- Forum: ZX Spectrum Next
- Topic: Head Over Heels (Next)
- Replies: 13
- Views: 1277
Re: Head Over Heels (Next)
There was a Facebook post 24 hours ago saying that they’d added more physical stock to the website, which has already sold out. Before that I saw bunch of posts by people sharing pictures of unwrapping their physical editions. If you’re not following Rusty Pixels on social media to get announcement ...
- Sat May 04, 2024 7:03 pm
- Forum: ZX Spectrum Next
- Topic: Next always defaults to YM
- Replies: 2
- Views: 455
Re: Next always defaults to YM
The PSG Mode setting is in the lower half of the boot menu options. The upper half is marked Options (always used) . The lower half is marked Options (not used by NextZXOS) . So this setting is for non-Next boot personalities, and isn't used by NextZXOS. The reason for this is that NextZXOS defaults...
- Sat May 04, 2024 6:45 pm
- Forum: ZX Spectrum Next
- Topic: Checking board type (KS1/KS2) from my code?
- Replies: 2
- Views: 90
Re: Checking board type (KS1/KS2) from my code?
Nextreg 15 : 0x0F (15) => Board ID (R) bits 7:4 = Reserved, 0 bits 3:0 = Board ID 0000 = ZXN Issue 2, XC6SLX16-2FTG256, 128Mbit W25Q128JV, 24bit spi, 64K*8 core size 0001 = ZXN Issue 3, XC6SLX16-2FTG256, 128Mbit W25Q128JV, 24bit spi, 64K*8 core size 0010 = ZXN Issue 4, XC7A15T-1CSG324, 256Mbit MX25...
- Fri Apr 05, 2024 6:36 pm
- Forum: Games/Software
- Topic: C.S.S.C.G.C 2024 is/will be/has open/ing/ed
- Replies: 103
- Views: 5461
Re: C.S.S.C.G.C 2024 is/will be/has open/ing/ed
Anyway - for anyone wanting to write crap Next games, as I am, @Seven.FFF has posted a fully-working MMC image with NextOS 2.08, which I've just tested with CSpect 2.19.4.4 and it has no problems running what I've just written on a real KS2 Next, but was failing horribly with 2.06H still installed....
- Fri Apr 05, 2024 6:20 pm
- Forum: Hardware
- Topic: ZX-VGA-JOY and M30 Bluetooth controller
- Replies: 4
- Views: 221
Re: ZX-VGA-JOY and M30 Bluetooth controller
I know Ben at ByteDelight had some concerns that Megadrive controllers were killing his divMMCs, but I don't know if anything was ever proved. (I know this topic is not about the Next, but after mentioning safety concerns, I can reassure people that the Next IS designed to work safely with Megadrive...
- Thu Apr 04, 2024 10:22 pm
- Forum: ZX Spectrum Next
- Topic: GetIt 1.3 [not working]
- Replies: 10
- Views: 470
Re: GetIt 1.3 [not working]
Thanks, that explains everything. I am wondering if it still makes sense to upgrade firmware in my case, because what I have seems to be really old one. What would be the recommended ESP firmware version for those who are willing to take the risk? I think it should be possible to open the case, rem...
- Thu Apr 04, 2024 10:18 pm
- Forum: Programming
- Topic: Bank switching issue
- Replies: 38
- Views: 1445
- Thu Apr 04, 2024 3:05 pm
- Forum: ZX Spectrum Next
- Topic: GetIt 1.3 [not working]
- Replies: 10
- Views: 470
Re: GetIt 1.3 [not working]
I was just about to ask if ESP reset helps. Frankly, I did not expect that alone to help. Because, there is a thing that makes it interesting. And the thing is the fact that .http alone works. AFAIK, zxdb-dl just uses it internally (am I wrong?), and thus either both should be broken or both should...
- Thu Apr 04, 2024 2:02 pm
- Forum: Programming
- Topic: Bank switching issue
- Replies: 38
- Views: 1445
Re: Bank switching issue
I can't say I've found a use for this so really only use banks 0,1,3,4,6 and 7 which are always appear at $c000 to $ffff One good use is where you have a double buffer using the shadow screen. You display one screen, and draw your updates to the other. When you finish updating, you display the othe...
- Wed Apr 03, 2024 12:42 am
- Forum: ZX Spectrum Next
- Topic: GetIt 1.3 [not working]
- Replies: 10
- Views: 470
Re: GetIt 1.3 [not working]
I've run into a problem with GetIt (a few other users have mentioned same in the comments); it seems to hang after the splash screen with the message "checking wifi…" GetIT is a fairly new application and it can be a bit flaky sometimes. In particular it can leave the ESP WiFi module wedg...
- Tue Apr 02, 2024 3:02 am
- Forum: ZX Spectrum Next
- Topic: Can Currah Microspeech be used with the Next?
- Replies: 7
- Views: 1283
Re: Can Currah Microspeech be used with the Next?
PC desk speakers should be fine, and you should be able to get an extension cable from Amazon for a couple of quid. You probably want something with a stereo socket at the speaker end and a mono plug at the uSpeech end.
- Thu Mar 28, 2024 9:55 pm
- Forum: ZX Spectrum Next
- Topic: Can Currah Microspeech be used with the Next?
- Replies: 7
- Views: 1283
Re: Can Currah Microspeech be used with the Next?
It’s been a couple of days since I watched it, but didn’t he say the OUTs were the same for the uSpeech and the IF1? Basically the aim is to disable any internal hardware that uses the same port decoding, or has an its own ROM if your device also has its own ROM. This conflicting is a basic thing th...
- Tue Mar 26, 2024 7:00 pm
- Forum: ZX Spectrum Next
- Topic: Can Currah Microspeech be used with the Next?
- Replies: 7
- Views: 1283
Re: Can Currah Microspeech be used with the Next?
Once modified (or not), here's a Next tutorial video from Tim Gilberts (of The Quill and PAW fame) including the Next OUT commands you need to type to enable the expansion bus and disable the internal hardware that clashes with the uSpeech:
- Tue Mar 26, 2024 6:51 pm
- Forum: ZX Spectrum Next
- Topic: Can Currah Microspeech be used with the Next?
- Replies: 7
- Views: 1283
Re: Can Currah Microspeech be used with the Next?
It is often repeated that Currah uSpeech isn't compatible with any Spectrums that don't have RF output. Usually people mod them to output audio directly. Here's one such mod: https://www.youtube.com/watch?v=PdAvMTof0jo It is, apparently, possible to get it working without a mod. The audio is availab...
- Sun Mar 24, 2024 11:18 am
- Forum: Games/Software
- Topic: Chuckie Egg Kempston support
- Replies: 12
- Views: 2267
Re: Chuckie Egg Kempston support
I hope it is per game It’s per game, as are all the game load options. That’s why the options exist in the first case,?to allow you to tweak the hardware for the way each game needs - which is often at odds with other games. One game only works on 128K, another game only works on 48K or with USR0 m...
- Sat Mar 23, 2024 7:50 pm
- Forum: Games/Software
- Topic: Chuckie Egg Kempston support
- Replies: 12
- Views: 2267
Re: Chuckie Egg Kempston support
As a proud owner of a ks2 zx next Sounds like you may not be aware you can map keys to your joysticks in all TAP/TZX/Z80/SNA games on the Next. This works similarly to the rewirable ComCon joystick interface you may remember from back in the day. After you’ve pressed enter in the NedtZXOS browser, ...
- Sat Mar 23, 2024 2:24 pm
- Forum: Other Retro Stuff
- Topic: Realms of Antiquity TI-99/4a
- Replies: 7
- Views: 712
Re: Realms of Antiquity TI-99/4a
If it’s licensed under an alternate licence that would indeed be tickety boo. But are there any licence details included in the distribution at all? I’m asking you because I don’t really want to spend $10 to find out.
- Sat Mar 23, 2024 12:06 pm
- Forum: Other Retro Stuff
- Topic: Realms of Antiquity TI-99/4a
- Replies: 7
- Views: 712
Re: Realms of Antiquity TI-99/4a
Is he including the BSD-3 licence for that emulator he’s redistributing as part of what he’s selling?
- Mon Mar 18, 2024 8:47 pm
- Forum: ZX Spectrum Next
- Topic: Atari Driving Controller Games
- Replies: 7
- Views: 467
Re: Atari Driving Controller Games
Surely you need to be reading that at a hell of a rate to detect the switching, to the detriment of the game? It presents constant bit values to, say, IN 31 with a kempston interface, so you only need to read once per frame, just like you would with a joystick. The values only change when the user ...