ZX Spectrum 128K: Difference between revisions
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==Timings== | ==Timings== | ||
Memory timings and contention are described in detail in the [[Contended memory#128K .2F .2B2|contended memory article]] | |||
==Paging== | ==Paging== | ||
==Keypad== | ==Keypad== |
Revision as of 20:26, 24 October 2010
For other models of 128K Spectrum see ZX Spectrum 128K models
Hardware
- Processor: Zilog Z80A microprocessor clocked at 3.5469MHz.
- ROM: 32KB ROM, arranged in 2 pages of 16KB.
- RAM: 128KB of Dynamic RAM, arranged in 8 pages of 16KB.
- Graphics: 256 x 129 pixels, 16 colours, attribute based. See Spectrum Video Modes.
- Sound: AY-3-8912 3 channel, 8 octave Programmable Sound Generator and "beeper". Modulated onto video signal.
- Keyboard: 58 plastic keys above a rubber pad and plastic membrane. Optional editor keypad.
- I/O: Software controlled RS232 serial port. Keypad Port. Tape In (ear) and Tape Out (mic).
Timings
Memory timings and contention are described in detail in the contended memory article