ZX Spectrum 128 edge connector: Difference between revisions
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[[Category:Spectrum]] | [[Category:Spectrum]] | ||
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{{Template:Spectrum edge connector|A15|A13|D7|NC|[[#Key_Slot|SLOT]]|D0|D1|D2|D6|D5|D3|D4|{{overline|INT}}|{{overline|NMI}}|{{overline|HALT}}|{{overline|MREQ}}|{{overline|IORQ}}|{{overline|RD}}|{{overline|WR}}|[[#Power| | {{Template:Spectrum edge connector|A15|A13|D7|NC|[[#Key_Slot|SLOT]]|D0|D1|D2|D6|D5|D3|D4|{{overline|INT}}|{{overline|NMI}}|{{overline|HALT}}|{{overline|MREQ}}|{{overline|IORQ}}|{{overline|RD}}|{{overline|WR}}|[[#Power|−5v]]|{{overline|WAIT}}|[[#Power|+12v]]|[[#Power|12v AC]]|{{overline|M1}}|{{overline|RFSH}}|A8|A10|NC|A14|A12|[[#Power|+5v]]|[[#Power|+9v]]|[[#Key_Slot|SLOT]]|0v|0v|[[#CPU_Clock|{{overline|CK}}]]|A0|A1|A2|A3|[[#IORQULA|NC]]|0v|[[#Removed Video Outputs|NC]]|[[#Removed Video Outputs|NC]]|[[#Removed Video Outputs|NC]]|[[#Removed Video Outputs|NC]]|{{overline|BUSRQ}}|{{overline|RESET}}|A7|A6|A5|A4|{{overline|ROMCS}}|{{overline|BUSACK}}|A9|A11}} | ||
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* Lower Pin 4 is connected to the +9 volt (nominal) DC supply from the ZX Spectrum PSU. | * Lower Pin 4 is connected to the +9 volt (nominal) DC supply from the ZX Spectrum PSU. | ||
* Lower Pin 3 is connected to the smoothed +5 volt DC output of the internal 7805 regulator. | * Lower Pin 3 is connected to the smoothed +5 volt DC output of the internal 7805 regulator. | ||
* Upper Pin 20 is connected to the | * Upper Pin 20 is connected to the −5 volt DC output of the internal power supply circuitry. | ||
* Upper Pin 22 is connected to the +12 volt DC output of the internal power supply circuitry. | * Upper Pin 22 is connected to the +12 volt DC output of the internal power supply circuitry. | ||
* Upper Pin 23 is connected to the oscillating voltage within the internal power supply circuitry. This is nominally 12 volts AC. | * Upper Pin 23 is connected to the oscillating voltage within the internal power supply circuitry. This is nominally 12 volts AC. | ||