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неизвестный разъем
The AY38912 sound chip can be found on the Spectrum 128, +2 and +3 computers
Pin Name Description
1SOUND CSound C (Can be tied together with A & B)
2PORT?
3VCC+5 VDC
4SOUND BSound B (Can be tied together with A & C)
5SOUND ASound A (Can be tied together with B & C)
6GNDGround
7PORT?
8PORT?
9PORT?
10PORT?
11PORT?
12PORT?
13PORT?
14CLOCK?
15CLOCK?
16RESETReset
17A8Address 8?
18BDIR?
19BC2?
20BC1?
21D7Data 7
22D6Data 6
23D5Data 5
24D4Data 4
25D3Data 3
26D2Data 2
27D1Data 1
28D0Data 0
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Источник(и) этой и дополнительной информации: ZX Spectrum FAQ, from Hardware Book
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