Tag Archives: QL

QL-VGA, the second

The last few weeks I continued working on the QL-VGA adapter, for once to have one myself and also because I was pretty strongly petitioned by some people. I’m not an electronics guy by trade, so this is some tough order for me. The first PCB I ordered looked gorgeous, but it was already obsolete… Read More »

QL-VGA (part 1?)

The QL and its non-standard video interface has always been a problem, even more so since the introduction of LCD monitors. Since I got my QL out of storage a few years ago I’ve been looking for a solution. I bought all kinds of Chinese video converters, the GBS8220 for example produced a very instable… Read More »

QL-SD demo update

Prompted by a customer request I have extended my QL-SD demo file with a few free QL games, 20 in total, including some that were never available for free before but for which I have the rights to release (basically the Jochen Merz catalog, thanks Jochen!). I went to great length to try to make… Read More »

(Super)GoldCard boot sequence

The last few days I’ve spent way too much time analyzing the (Super)GoldCard boot ROM. The sources supplied along with SMSQ/E are only sparsely commented disassembly that was basically impossible to read. It irked me to no end that I didn’t understand the code and finally I did something about it. The process had a… 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 »

QL-SD, QL-microSD and (S)GC battery

QL-SD So, a short update on QL-SD, I have spent another few hundred Euros on parts and everything has arrived except the package with the SD-card connectors, which seem to be lost in the mail. These are needed for the double-SD adapters, which I expect will be pretty popular. Instead of waiting for them to… Read More »

QL-SD update

Just a slight update before I go on holiday for a week. The design of the MDV adapter board has been finalized and I already have the PCBs here: The board can be built into four different configurations of which I will probably offer two: Single slot drive using a ready-made daughter board soldered onto… Read More »