The Complete Sinclair QL ROM Disassembly is a complete guide to the Sinclair QL ROM (QDOS).
It would be interesting to see which version of QDOS was used to produce this book!
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Title: Complete Sinclair QL ROM Disassembly
Author: P Gerrard and K Bergin
Publisher: Duckworth Home Computing
Year of Publication: 1985
Commercial Status: Commercial
ISBN: 0-71561-891-1