4 ms·
> I stole copiously from The Complete Spectrum ROM Disassembly by Ian Logan and Frank O’Hara This was an actual book, readily available at your local bookstore
by klelatti 3y ago
> I stole copiously from The Complete Spectrum ROM Disassembly by Ian Logan and Frank O’Hara
This was an actual book, readily available at your local bookstore, that had a full, independently produced, Z80 disassembly listing (with great comments) of the original Spectrum's 16K ROM.
That the actual Sinclair team were using it as their main reference when they updated the ROM is just fantastic.
- timthorn 3y ago> This was an actual book, readily available at your local bookstore Or on my bookshelf, still :)
- klelatti 3y agoSame here! For those not similarly blessed, the Internet archive has a copy. https://archive.org/details/CompleteSpectrumROMDisassemblyThe https://archive.org/details/CompleteSpectrumROMDisassemblyTh... Of particular note, the use of a stack based VM for floating point.
- timthorn 3y agoI will presume that you know of the more recent tome on the ULA? "The ZX Spectrum Ula: How to Design a Microcomputer" by Chris Smith
- nickt 3y agoDitto. If you’re a Sinclair fan, all his books are worth a read. http://www.ianlogan.co.uk/sinclair/books.htm http://www.ianlogan.co.uk/sinclair/books.htm
- helpfulContrib 3y ago[dead]