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November 2001, Week 5

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Subject:	Re: IBM as an option - IA-64 vs. PA-RISC
From:	"VANCE,JEFF (HP-Cupertino,ex1)" <[log in to unmask]>
Reply To:	VANCE,JEFF (HP-Cupertino,ex1)
Date:	Fri, 30 Nov 2001 07:50:22 -0800
Content-Type:	text/plain
Parts/Attachments:	text/plain (21 lines)

Hi all,

> Prior to MPE/XL (later called MPE/iX) being released, MPE and
> its utilities was written in SPL. Think that some of the very
> low-level stuff might have  been written in assembler/machine code.

Most of MPE/iX OS is written in Pascal using some OS extensions.
There is, of course, assembly code for the lower level, and very
performance sensitive routines.  We also have some C code in the
POSIX library and some of the new IO code we "borrowed" from HP-UX.
There is still CM code, mostly SPL but also a bit of Modcal. And,
we have some PSPL and SPL II code mixed in as well.  No COBOL, as
far as I know, and Wirt may be disappointed to learn that there
is no BASIC V code either :)

FWIW,
 Jeff Vance, CSY

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