Jan Bredenbeek wrote: > I've been doing a lot of disassembling on the original QL ROM but > understanding the SuperBASIC parser was a bridge too far for me, so I found > it a very interesting read. It raises one question though - is SBASIC an > interpreter or a real-time compiler?
It's a compiler that compiles to intermediate code and an interpreter for this code. Basically the same as a real-time QLiberator. And actually similar to how modern languages do this, like Java and C# (if we disregard the later hot-spot compilation step). > I'm still working on BASICODE and hit upon another 'feature' which works > differently in SBASIC: the vector at $138 can be used to LIST a number of > lines (from D4 to D6), but in the original ROMs and Minerva it can also be > used to execute a DLINE when called with D7<>0 (I believe the TK2 ED > command makes extensive use of this). However in SBASIC the DLINE feature > doesn't work, and from examining the code I could deduce that D7 isn't > being tested at all! Haven't investigated anything in this regard, but full source code for TK ED is available and other than a different way to call the vectored routines it's identical between QDOS and SMSQ/E. Cheers, Marcel _______________________________________________ QL-Users Mailing List
