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ZX Spectrum ULA: Difference between revisions
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(Stuff about the ULA, what it does, how to poke it, contention) |
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The '''ULA''' (Uncommitted Logic Array) is a chip which controls most of the interfaces between the Z80 CPU and peripheral functions. On a 16k/48k | The '''ULA''' (Uncommitted Logic Array) is a chip which controls most of the interfaces between the Z80 CPU and peripheral functions. On a [[ZX Spectrum 16k/48k]], it is a Ferranti 5C102, 5C112 or 6C001 (the '102 had a timing fault which necessitated an extra board called the "spider mod"; the 6C001 alters the timing of the colour burst signal to improve performance with certain TV sets. ''(This info from the Spectrum Service Manual; don't know how to do citations on this wiki)''). | ||
== ULA Functions == | == ULA Functions == | ||
