Well, I’m back from my fantastic summer holidays in Norfolk (hence the lack of updates on the blog). I did toy with the idea of sneaking a netbook into my luggage, but would probably have had to fight the kids for it anyway. I’m glad I didn’t; it was very relaxing and the weather was fantastic. Anyway, to make up for it, I’ve added a section on the ZX Spectrum Screen Memory Layout. What were …
I’ve started sections on the Spectrum hardware (just the keyboard and memory map for the moment) plus an assembly language primer, including a section on boolean algebra. It’s been a bit heavy going today, so to reward you, here is that picture of a laughing goat I promised you. Keep reading; this blog will be updated on a regular basis!
I’ve just discovered a fantastic retro games development tool… Up until now I’ve been using the Z80ASM assembler by Peter Hanratty and ZX Spectrum Emulator by Vaggelis Kapartzianis; both excellent applications in their own right, but still lacking somewhat. The assembler did not appear to support operand arithmetic, so I could not do this: LD (SOMELABEL+1),HL … SOMELABEL: LD HL,0 Which is a beggar, as I often use self modifying code and being able to access memory a …
