Sinclair ZX80 / ZX81 / Z88 Forums

I'm also wondering what the 128 char mode is.

Thank you. Could you test both the programs? They seem identical but one of the two includes a break keys detection

Yet another prototype. Am I getting closer?

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...

I see. I will try to merge your code, but as you probably saw the z88dk driver is rather different.

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

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...

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...

A brand new video showing a F.IZ. disk drive controller in the ZX Spectrum version

https://youtu.be/7Js6sFHqqX4

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.