Yet another prototype. Am I getting closer?
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- Thu Apr 04, 2024 11:41 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
- Thu Apr 04, 2024 11:15 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
Re: Enhanced ARX True High Resolution Display Driver
Ok, I'm trying to merge in the Paul's code, but honestly I'm doing it mechanically, replacing the existing code portions with the new ones. I haven't identified the code changes permitting the better control of the picture sync, and the 64 rows mode is temporairly lost (on my prototype) but it is so...
- Wed Apr 03, 2024 2:32 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
Re: Enhanced ARX True High Resolution Display Driver
I see. I will try to merge your code, but as you probably saw the z88dk driver is rather different.
- Wed Apr 03, 2024 12:59 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
Re: Enhanced ARX True High Resolution Display Driver
Some more sample programs
Some of them required a manual build of lib3d.lib altered with the -IXIY trick, yet another todo for the z88dk project
Some of them required a manual build of lib3d.lib altered with the -IXIY trick, yet another todo for the z88dk project
- Wed Apr 03, 2024 10:34 am
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
Re: Enhanced ARX True High Resolution Display Driver
The resulting programs after my crappy fix: could anybody see if it fixes the problem ? I could have introduced the problem trying to reduce the code size (e.g. heavily relying on ROM calls) because changing the way to test the BREAK condition is apparently enough to solve the problem. The code size...
- Tue Apr 02, 2024 1:45 pm
- Forum: Development
- Topic: Enhanced ARX True High Resolution Display Driver
- Replies: 53
- Views: 3717
Re: Enhanced ARX True High Resolution Display Driver
Hello, I remember that behaviour, I never understood it was appearing because of the ZXpand interface! I was finally able to reproduce the problem, I'm inserting a simple fix which solves on EO. The current driver code is here, it is quite different from the original one because it includes video ef...
- Thu Mar 07, 2024 3:32 pm
- Forum: Hardware
- Topic: ZX81 floppy disk systems
- Replies: 17
- Views: 6986
Re: ZX81 floppy disk systems
A brand new video showing a F.IZ. disk drive controller in the ZX Spectrum version
https://youtu.be/7Js6sFHqqX4
https://youtu.be/7Js6sFHqqX4
- Mon Nov 27, 2023 8:59 am
- Forum: ZX Spectrum Lounge
- Topic: How to run .TRD spectrum files ?
- Replies: 3
- Views: 19846
Re: How to run .TRD spectrum files ?
The TRD format is a pure sequential, sorted dump of the disk sectors. The formatting is guessed by the emulator depending on the file size.
I suggest to try with SAMDISK, it is usually able to convert to other disk dump formats by adding the needed extra detail.
I suggest to try with SAMDISK, it is usually able to convert to other disk dump formats by adding the needed extra detail.
- Mon Oct 09, 2023 5:18 pm
- Forum: Software
- Topic: Dallas game port (32K)
- Replies: 0
- Views: 22391
Dallas game port (32K)
There's surely space for improvements, like a colour version of the game or trying to exclude the initial banner and compress the maths by using the ROM. By the way here's a first, mostly untested version of the DALLAS game for the Lambda with 32K RAM, in the three ROM flavors (V1, V2, and CAC3/NF30...
- Mon Oct 09, 2023 1:04 pm
- Forum: Lambda 8300/ Power 3000 Lounge
- Topic: NF300 and CAC-3 peculiarity
- Replies: 0
- Views: 24969
NF300 and CAC-3 peculiarity
This is an odd one. While disassembling the CAC-3 and NF300 ROMs I ran into a strange behaviour of th STK-FETCH routine. First of all, differently than on the ZX81, it was positioned at $20 permitting it to be invoked by RST rather than CALL and save a couple of bytes every time. Ok, that happens al...