Started work very early. Spent all day tracing an ‘infinite’. Appears that on a certain make of video card that if you output a value too large for the render target to the ROP unit and enable blend it will always write an infinite. Which is annoying and took over two days to get to the bottom of. I’ve got a fix but still need to tidy it all up.

Weather is on the turn for the worse, walked Sasha but it was ugly. Walked myself in the evening and it was drizzling. Spent some time playing with an online Z80 compiler and emulator, have the sudden longing to build my own computer based on a Z80 or 6502. Yes I know you can use a PIC for just about anything, but where’s the fun in that.