Search found 346 matches
- Tue Mar 19, 2024 1:06 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Re: Enhanced ARX True High Resolution Display Driver
I have tried the demo on Andy's UDG4ZXpand board on an issue one ZX81 with an issue three ZXpand and got the following results. Thanks. It is nice to know ARX can work with the UDG4ZXpand board, at least in 64 character mode, and therefore there is a base of hardware out there that can run ARX soft...
- Mon Mar 18, 2024 4:18 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Re: Enhanced ARX True High Resolution Display Driver
I recall there was an UDG4ZXpand board (which I think Andy created also but correct me if I am wrong). I'm wondering if this will make the 8K-16K RAM provide by the ZXpand ARX compatible. Does anyone know?
- Mon Mar 18, 2024 4:10 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Re: Enhanced ARX True High Resolution Display Driver
Thanks, good to know. I used EightyOne to get perfect timing in the display driver but there is of course a chance its emulation is still not 100% accurate. So it is good if other emulators that have been written independently agree with the results from EightyOne.
- Mon Mar 18, 2024 4:04 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Re: Enhanced ARX True High Resolution Display Driver
Hmm, I don't think so... as ARX is based on UDG, it is necessary that the RAM address lines A0~A8 are generated by the ULA, which is not the case with memory expansions connected to the rear expansion bus. Yes, good point! :oops: If I had a 64K RAM pack then this would have been obvious during my t...
- Mon Mar 18, 2024 2:38 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Re: Enhanced ARX True High Resolution Display Driver
Here is the source code for the new ARX display driver and demo program, along with the demo program .p file:
- Mon Mar 18, 2024 2:35 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 13
- Views: 643
Enhanced ARX True High Resolution Display Driver
The ARX display technique devised by Andy Rea in 2006 is fascinating in that it could have given true high resolution graphics back in the day using an off-the-shelf 64K RAM pack if only someone had thought to write a suitable display driver [*Correction* - See comment in post from kmurta lower down...
- Sat Feb 10, 2024 1:04 pm
- Forum: Emulators
- Topic: New release of EightyOne available
- Replies: 342
- Views: 335368
Re: New release of EightyOne available
A minor update to EightyOne is now available which addresses 4 small issues:
https://sourceforge.net/projects/eightyone-sinclair-emulator/
https://sourceforge.net/projects/eightyone-sinclair-emulator/
- Sun Oct 22, 2023 12:20 am
- Forum: Emulators
- Topic: Eightyone emulator tools issue
- Replies: 5
- Views: 5305
Re: Eightyone emulator tools issue
You can reposition all windows automatically from within EightyOne using:
View -> Gather Windows.
And you can delete the current .ini file from within EightyOne using:
Options -> Configuration -> Reset To Default Settings
View -> Gather Windows.
And you can delete the current .ini file from within EightyOne using:
Options -> Configuration -> Reset To Default Settings
- Fri Aug 04, 2023 2:51 pm
- Forum: Emulators
- Topic: New release of EightyOne available
- Replies: 342
- Views: 335368
Re: New release of EightyOne available
Is it still based on the very first ZX128 emulator? Yep. Many of my lowres games use a trick to store data on the screen. Load games like DIGgIT, MINESWEEPER, SNAKEBINGO, K-MAN, LODERUNNER, 8BITWARS to see what I mean. It is on my Sinclair TO DO list (along with many other things). The necessary ch...
- Fri Aug 04, 2023 2:38 pm
- Forum: GAMES
- Topic: Does this ZX81 Bomber game exist?
- Replies: 16
- Views: 9356
Re: Does this ZX81 Bomber game exist?
If you start it using RUN then you get a 2/22 error. If your start using GOTO 1 then it appears to run ok.JohnsBargs wrote: ↑Mon Jul 31, 2023 11:50 am https://www.zx81.nl/files/bomber.p
...but it crashes constantly with a 2 error that I can't figure out, so it's hard to tell.