Tag Archives: QDOS

A short history of QDOS file headers

Background In Germany there was a famous commercial that starts with the sentence “The history of menstruation is a history full of misunderstandings” and the same can be said about QDOS file headers. So what’s it all about? On today’s PC file systems every file has some meta data associated with it. The main one… Read More »

QL-SD teaser

The QL-SD driver seems to be finished (note that it currently doesn’t work with the MiST FPGA board, but there are no more known problems with either the original QL hardware or the MiSTer FPGA machine). Now the boring part has begun, which means hours of reading tax related stuff (selling stuff internationally is hard!),… Read More »

QDOS: To LRESPR or not

Update: the old code had a bug if the EXE was made resident using the HOT_RES keyword (thanks to Jan Bredenbeek for pointing it out), updated code below. Today I’ve had a short discussion about creating a QDOS executable that can both be LRESPRed (to install a thing) and EXecuted (to, erm, execute it). One important… Read More »