Attached are a range of programs I use for testing. They test most combinations but a few are not covered (I don’t have ready made tests for every possible combination, but if all of the attached work then the remaining combinations should work too).

Each filename denotes if attribute colour mode is used or colourisation colour mode is used. It also indicates whether WRX, QS, CHR$64 or CHR$128 mode is used. Note I’ve used “CHR$64” to mean the plain 64 character UDGs (I register is even) to distinguish it from CHR$128 UDG mode (I register is odd). CHR$64 and CHR$128 imply RAM is in the 8K-16K region. WRX on its own indicates it applies to the 16K RAM, but If WRX requires RAM in the 8K-16K region then this is indicating in the filename also.

The Test Pattern program uses colour attribute mode and cycles through all border colours. The display file is configured with a collapsed row (above the copyright notice) consisting of just NEWLINE and so this collapsed row should appear in the border colour.

The Rebound game will detect if colour mode is available and will utilise attribute colour mode if so. Hence it gracefully falls back to black & white mode if colour is not available. Other games, e.g. Colour Mazogs, will only work if colour mode is available and it will prompt the user to enable colour mode else it won’t allow them to continue.

I hope zxsp can handle tzx files – these files contain of a colourisation loader and / or a character UDG loader (CHR$64, CHR$128 or QS), along with the actual game. The colourisation and UDG loaders will detect if colour or appropriate UDG RAM is available (if not present then colour and UDGs are ignored). The CHR$64 and CHR$128 modes can use any of the 8K RAM in the 8K-16K region, but the attached games probably use the same fixed value of I register rather than testing a mix of values.

If you can get all that lot displaying correctly then all other combination you can think of should work ok also. Should you want to explicit test other combinations then let me know and I can create a test program for them.