Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!amdcad!ames!ptsfa!ihnp4!homxb!mtuxo!mtune!codas!killer!jfh
From: jfh@killer.UUCP (The Beach Bum)
Newsgroups: comp.arch
Subject: Re: pdp-11/55
Message-ID: <1811@killer.UUCP>
Date: Tue, 13-Oct-87 18:10:30 EDT
Article-I.D.: killer.1811
Posted: Tue Oct 13 18:10:30 1987
Date-Received: Thu, 15-Oct-87 21:45:51 EDT
References: <1755@ncr-sd.SanDiego.NCR.COM> <275@usl> <29933@sun.uucp> <184@tmsoft.UUCP>
Organization: Big "D" Home for Wayward Hackers
Lines: 18
Summary: Additional uCode in ROMs for /44 and others


Some other poster wrote that only the /60 had COBOL and other bizarre
instructions.  I didn't both with that posting because today I am being
lazy.  Tough luck.

The /44 and /34 both had sockets for microcode ROMs that didn't come with
the machine out of the box.  There were two options that I was (am?) aware
of.  The first was a collection of COBOL instructions.  The second was
a set of string instructions, no unlike (by too much) what the VAX has.
I also recall a set of chips for floating point in microcode, but that
might have been additional microcode for the FPU.

- John.
-- 
John F. Haugh II		HECI Exploration Co. Inc.
UUCP:	...!ihnp4!killer!jfh	11910 Greenville Ave, Suite 600
"Don't Have an Oil Well?"	Dallas, TX. 75243
" ... Then Buy One!"		(214) 231-0993