Still without the chokes (due Monday), I built up a second board with all new parts, and it's showing fewer issues than the first build - but still some very slight issues when doing heavy block-copies -- it seems that it's VRAM reads that appear to be what's really affected, which is why window-dragging shows up the issue most. On this new build, I thought the issue wasn't even present until I did an extended amount of horizontal dragging of a window and noticed very slight green colour appearing on the scrollbar.We'll see what happens when I build one up using eight of these fresh HM538253BTT-7 parts
The NEC RAMs that Acorn used as IC1s are 'tricky' to get hold of (one eBay seller found so far, wanting £10 per IC).
Statistics: Posted by IanJeffray — Sat Jan 04, 2025 10:51 pm