Category Archives: QL-SD

QL-SD driver 1.10

The QL-SD driver ROM is so full that every byte counts and during my search for superfluous bytes for v1.09 I removed one instruction too much. This results in a wrong value returned from the iof.rhdr call which is often not used anyway but can lead to subtle bugs in applications. Today I’ve uploaded a… Read More »

QL-SD ROM news

A while ago I’ve sent pre-production QL-SD ROM samples to a few testers and now Dilwyn Jones has written a review of his, read it here. Thanks Dilwyn! Unfortunately I don’t currently have much time for QL stuff and what little time I recently had I’ve invested into making a NTSC compatible QL-VGA. But before… Read More »

QL-SD ROM (tiny!)

Hardware revisions I get asked a lot about the state of my new QL-SD, so here’s an update. The new external QL-SD variant (henceforth called “QL-SD ROM”) went through a lot of revisions: This series also exemplifies my progress as a PCB-designer. I’ve never formally learned to create PCBs, so it’s all learning by doing.… Read More »