ZX Spectrum edge connector: Difference between revisions
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==ZX80/81 Compatibility== | ==ZX80/81 Compatibility== | ||
The ZX Spectrum expansion connector is related to (and partially compatible with) the earlier [[ZX80/81_Edge_Connector|ZX80 and ZX81 expansion connector]], though only the data bus, low address lines, and a subset of the control bus remain in the same locations relative to the index slot. | The ZX Spectrum expansion connector is related to (and partially compatible with) the earlier [[ZX80/81_Edge_Connector|ZX80 and ZX81 expansion connector]], though only the data bus, low address lines, and a subset of the control bus remain in the same locations relative to the index slot. Lines not physically present on the ZX80/ZX81 edge connector are shown with underlining of their numbers in the diagram shown here. | ||
==ZX Spectrum model differences== | ==ZX Spectrum model differences== |