Search found 3269 matches
- Sat Apr 06, 2024 3:45 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
In very simple terms, when the "X" command is used it means the ZXpand ROM is switched out and the ZXpand becomes just a 32k RAM pack with the ZX81 ROM now being in control.
- Fri Apr 05, 2024 10:15 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
The Zxpand uses the equivalent of the 622 (issue 2 ROM ) ROM according to Charlie, and relies on the Zeddy ROM for the CHR table. When switched out, in my case, Dark star is running on the 649 ROM (Issue 3. ) and works OK. In both cases constantly pressing break just returned both files to the K cur...
- Fri Apr 05, 2024 7:55 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
While testing the new driver I noticed that DSTAR crashes in 192 rows mode unless I add at least one NOP instruction. I'm not sure whether the crash is caused by a memory alignment problem or timing/sync issues, other programs run smoothly on EO. The Dark star in your sampler runs OK using UDG4ZXpa...
- Fri Apr 05, 2024 7:51 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
- Fri Apr 05, 2024 1:01 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
- Thu Apr 04, 2024 7:31 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
Works with UDG4ZXpand using 64 chr mode, see picture, also a picture of it using 128 chr mode.
- Thu Apr 04, 2024 1:08 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
Will test this tonight and report back.
- Wed Apr 03, 2024 7:40 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
On real zeddy with UDG4ZXpand set for 64 mode Stefano's programs either crash or those that run have spurious dots and lines here and there, 128 mode makes it worse although the eagle one seems OK.
ARX is working well enough in Kmurta's Forth79 if that helps.
ARX is working well enough in Kmurta's Forth79 if that helps.
- Wed Apr 03, 2024 3:21 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 6396
Re: Enhanced ARX True High Resolution Display Driver
I have a UDG4ZXpand board and can test if needed.
- Tue Apr 02, 2024 3:50 pm
- Forum: SALES
- Topic: Memotech 16K RAM pack - working. £20 plus p&p
- Replies: 8
- Views: 1260