ZX Spectrum +2A/2B, +3/3B edge connector: Difference between revisions

ZX Spectrum +2A/2B, +3/3B edge connector (view source)

4 bytes added , 30 April 2015

Replace {{overline|RST}} with {{overline|RESET}}

707

edits

Revision as of 00:03, 30 April 2015 (view source) Zub (talk \| contribs) (Use overlines for active low signals, fix typo) ← Older edit		Revision as of 00:29, 30 April 2015 (view source) Zub (talk \| contribs) (Replace {{overline\|RST}} with {{overline\|RESET}}) Newer edit →
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	====RESET====		====RESET====
	The RESET signal is an inverted version of the {{overline\|~~RST~~}} signal, and is produced by one of the inverters in IC15. The purpose of this signal is unclear since any peripheral could derive it by inverting the {{overline\|~~RST~~}} line itself. In the +3 it is connected via a 10k resistor (R76) to the floppy drive select line. This however seems to be an error in the circuit design though it has no adverse effects.		The RESET signal is an inverted version of the {{overline\|RESET}} signal, and is produced by one of the inverters in IC15. The purpose of this signal is unclear since any peripheral could derive it by inverting the {{overline\|RESET}} line itself. In the +3 it is connected via a 10k resistor (R76) to the floppy drive select line. This however seems to be an error in the circuit design though it has no adverse effects.