Page history
From Sinclair Wiki
13 September 2021
10 May 2020
12 October 2015
IO → I/O as per Zilog Z80 and Spectrum BASIC manuals and Wikipedia
m+5
Zub moved page Contended IO to Contended I/O: IO → I/O as per Zilog Z80 and Spectrum BASIC manuals and Wikipedia
m
22 August 2015
Refine 0x4000 - 0x7ffe explanation slightly
m+52
Explain contention of ports 0x4000 to 0x7ffe with low bit clear
+378
21 August 2015
Remove references to {{overline|WAIT}} as that's simply not how the Speccy works
+66
Split out +3 sentence
m+1