Changes
== 2nd Disk Drive pinout ==
[[File:2ndDiscDrivePinout.gif]]
The following table lists the signal on the "2nd Disk Drive" connector on the back of the CPC664/CPC6128/6128plus.<br>
Some drives can be jumpered to output the desired /RDY signal, some can at least be soldered. Others can be operated by "tuning" the cable.
See [[3 1/2" & 5 1/4" Disk Drives]] for more detailed instructions, incl. Side Switch.
== Aleste 520EX Disc Connector ==
The [[Aleste 520EX]] has (almost) the same 34 pin male card-edge as the CPC,
A1..A17 Same as <odd> CPC Pins 33..1 (NC,NC,NC,/INDEX,etc) A17 ------ A1
B1..B17 Same as <even> CPC Pins 34..2 (all wired to GND) B17 ------ B1
The drive select signals are a little different:
CPC.Pin23=/DRIVE_SELECT_1 (B:) ALESTE.PinA6=DRIVE0 (A:)
CPC.Pin25=NC ALESTE.PinA5=DRIVE1 (B:)
== Warning! ==
* The numbering on the CPC664/non-German CPC6128 is exactly the opposite of that in the Shugart standard (Shugart 1 = CPC 34, Shugart 2 = CPC 33 and so on)
* The German CPC6128 manual is a 1:1 copy of the Amstrad CPC6128 manual, although the Centronics connector would need to be mounted top-down in order for the plug numbering to match the pin numbering as shown in the manual, which it isn't. Thus, the pin numbers in the manual not only mismatch the Shugart standard, but also the plug. E.g.: Pin 1 on the pin out in the manual and in the table below will be numbered 36 on the plug and 34 according to the Shugart standard.
* For a maximum confusion, Amstrad has completely changed the pin out numbering on the 6128plus. Here, the numbers on the connector were rotated in order to match those of the plug, but still they do not match the Shugart standard: Pin 1 on the 6128plus is wire 2 of a Shugart-compatible cable, so that wire 1 cannot be connected at all and all signals are shifted by 1one.
</b>
<br><b>For these reasons it makes sense to forget about the numbering by Amstrad/Schneider completely. <br>Instead, only keep in mind where wire 1 of a proper Shugart cable belongs to, relative to a standard numbered plug!, and use Shugart wire numbers when referring/looking to a specific signal.</b>
=== Wire 1 (Red wire) orientation table ===
or
=== Wire 1 (Red wire) orientation table, easier to remember more descriptive ===
{|{{Prettytable|width: 300px; font-size: 2em;}}
|''Wire No. (Shugart)''||''CPC664/CPC6128 edge''||''CPC6128 Centronics''||''6128plus Centronics''
|1 (Red)||Vice-versa/Opposite from index nose||Third from right/first||One over right side/-1 from first
|}
[[Category:Peripherals]][[Category:DATA Storage]][[Category:CPC Internal Components]]
