Graphical Glitches

[Mouseboy007]

Three examples of graphical glitching (possible screen mode errors?):
None of the glitches below exist using the same ADF Disk (or HDF Disk) & RiscOS Rom combination (3.10) in Arculator 0.99

1. James Pond - there are bars bottom and sometimes top of the screen with corruption.
2. Twinworld has corrupt graphics - it appears as if most colours are inverted

I can provide the ADF's/HDF's if required