Path: utzoo!mnetor!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!RITVAX.BITNET!LMB7421
From: LMB7421@RITVAX.BITNET
Newsgroups: comp.sys.apple
Subject: Could someone help with Serial port interface?
Message-ID: <8804271717.aa15110@SMOKE.BRL.ARPA>
Date: 28 Apr 88 00:12:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 25

I am attempting to write a serial port driver which will take advantage
of the GS serial buffering ability...however, I can't seem to get the
advanced interface to accept the call.
Currently, I am using the routine/calls described below...

LDA #${low byte of pointer}
LDX #${middle byte}
LDY #${bank byte}
JSR $C214 {the address of the advanced interface...}

The address pointed to contains this...

$04 {#of parameters + 1 for the error + 1 for the command}
$12 {Command for set InBuff}
$0000 {error word}
$00006000 {my input buffer address}
$03FF {the length of the buffer}

In reality, I'm also storing #$C2 in $7f8 and $CFFF, but that's not it...
No matter what I try, the computer hangs...Any hints?

Les Barstow  a.k.a. Phoenix
LMB7421@RITVAX.BITNET
..rutgers!rochester!ritcv!ultb!ritvax!lmb7421.UUCP
292 Kimball Dr.  Rochester, NY 14623