PIP problem solved on Apple ][ CP/M

From: Vintage Computer Festival <vcf_at_siconic.com>
Date: Mon Apr 21 13:40:00 2003

I was finally able to devote some time to my Apple CP/M issues and figured
it out.

It turns out that the version of MS CP/M that I'm using has got the device
identifiers correct, even though Steve Hirsch warned that they were
reversed in Microsoft's implementation. I apparently have a version where
it is fixed.

I first connected up my laptop to the Super Serial Card in slot #2 and
then tried to PIP RDR:=B:file. I got a message to the effect that the
RDR: device cannot be written to. Then I tried to get slick and use STAT
to change the RDR: device to what PUN: was pointed to. That didn't work.
Then I decided to just try PIPing to the PUN: device and it took, but I
didn't see anything across the serial port.

A little more digging and reading and I verified that, as Steve said, the
Apple ][ CP/M standard is for a serial card in slot 2. In fact, the
documentation I read indicated that the hardware configuration pretty
much matches that of Apple Pascal. So I did a STAT DEV: to show me what
devices were connected where. RDR: was set to PTR: and PUN: was set to
:PTP (presumably Paper Tape Reader and Paper Tape Punch respectively). So
then I did a STAT VAL: to see what the possible connections were for each
device. PUN: could be TTY: PTP: UP1: UP2:

I thought for a second and then figured it would be worth a try to see if
UP2: stood for the device in slot 2. Sure enough it did, and when I tried
a PIP to PUN: it worked.

So I was able to PIP the files directly from disk over the serial port to
my laptop. Very convenient.

There apparently is a utility that allows you to copy files from CP/M
disks to Apple DOS disks but it must have come on a DOS utility disk that
I just don't have.

I'm sure KERMIT or some sort of X-modem protocol was written that would
have made this a lot easier, but I seem to have misplaced my Apple CP/M

Oh well. At least I know how it's done, and this can serve as quick docs
for someone attempting to do the same in the future.

Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger                http://www.vintage.org
 * Old computing resources for business and academia at www.VintageTech.com *
Received on Mon Apr 21 2003 - 13:40:00 BST

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