Re: Need cable pinout for duodisk cable

[spec@vax2.concordia.ca (Mitchell Spector)]

In article buggie@musca.unm.edu (stephen e buggie) writes...

>Peter Sheerin (noreply@pushback.com) wrote:
>> I just acquired an Apple IIe in what appears to be fully-working condition,
>> including a monochrome monitor and a duodisk, but there was no cable with
>> the disk drive, so I'm unable to test it yet.
>>
>> The back of the duodisk has a DB-25 female connector, but the I/O card in
>> the CPU has a DB-19 female connector. On advice I now know to be wrong I 
>> had a DB-19 to DB-19 cable made for me, so I need to know the pin mapping 
>> so that I can get the cable modified so that it will work.
>>
>> Where can I find the specs?
>
>Mitch Spector (Montreal, French Canada) has the DuoDisk pinouts.
>
>Mitch ----- could you append them here?

    I'm not sure what made you think I had the DuoDisk pinouts of 
all people, but nevertheless, it was simple enough to dig them up 
online just now. Here they are below:

       DB-25                                       DB-19
       -----------------------------------------------------
       2-------------------Ground---------------------1
       4-------------------Ground---------------------2
       9,21----------------Ground---------------------3
       10,14---------------Ground---------------------4
       23-----------------[-12 volts]-----------------5
       7------------------- +5 volts------------------6
       19------------------- +12 volts----------------7
       20------------------- 12 volts-----------------8
       8------------------- ENBL B -------------------9
       12------------------- WR PROT-----------------10
       15------------------- 00 ---------------------11
       16------------------- 01 ---------------------12
       17------------------- 02 ---------------------13
       18------------------- 03 ---------------------14
       5-------------------- WR REQ ------------------15
       24------------------- +5 volts-----------------16
       11------------------- ENBL A-------------------17
       3-------------------- RD DATA------------------18
       6-------------------- WR DATA------------------19
       1,13,22,25--------------------------No connection


Mitchell Spector
spec@vax2.concordia.ca