Re: Need info on A2 card

["Glenn Jones" <rg.jones@rogers.com>]

"Bill Garber" <willy4SPAM6pa@comXcast.net> wrote in message
4qOdnQRXv78yexCiRVn-jw@comcast.com">news:4qOdnQRXv78yexCiRVn-jw@comcast.com...
>
> I know I've probably asked this before, but if anyone
> has the pinout for the DB25 port connector on a Profile
> interface (Apple II interface) card, I would appreciate it.
>
> Thanks,
>
> Bill @ GarberStreet Enterprizez };-)
> Web Site - http://garberstreet.netfirms.com
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Bill, the profile drive was compatible with the Apple III and Lisa. this is
the spec of the parallel port on the Lisa - taken from
http://www.crazychucks.com/Lisa/GOODTHINGS.PDF pg 141

Hope this helps

106 Lisa: Two Port Parallel Card Pinouts

Two Port Parallel Card

661-93138

PIN NAME PIN NAME

1 GND 14 GND

2 GND 15 PSTRB

3 RW 16 BSY

4 GND 17 CMD

5 DDO 18 PARITY

6 DD1 19 OCD

7 N.C. 20 GND

8 DD2 21 CRES

9 GND 22 DD3

10 GND 23 DD4

11 DD5 24 GND

12 DD6 25 CHK

13 DD7

The meanings of the individual signals on the interface are:

D0-D7: Eight bidirectional data lines. Bit D7 is the MSB.

DRW: This line is driven high by the Lisa to indicate that data is

expected to be input on the data lines. It is driven low to indicate

that data is being output

PARITY: Bidirectional line which must be configured on the basis of the data

currently on the data lines to give odd parity

PSTRB: Processor strobe line used as a signal by the Lisa to indicate valid

data being output.

CMD: This line is asserted by the Lisa to indicate that a command has been

placed on the data lines.

BSY: This line is asserted by the peripheral to indicate to the Lisa that

it is busy and unable to process commands on the interface.

OCD: The Lisa monitors this line. If it is high, it is assumed that no

device is connected to the interface.

CRES: This line is asserted by the Lisa when the peripheral is to be reset

to its power-on state.

CHK: This signal may be used to interrupt the CPU in the event that a

fault condition has occurred in the device connected to the

interface.

NOTE: These pinouts apply to both the upper and lower connector of a two
port

parallel card installed in a Lisa or Macintosh XL.