8 Jan
2003
8 Jan
'03
11:34 p.m.
Message: 26
Date: Tue, 7 Jan 2003 16:27:54 -0500 (EST)
From: Megan <mbg(a)TheWorld.com>
To: cctalk(a)classiccmp.org
Subject: Re: Chip Upgrades for 11/23 (was Re: 11/03 system on eBay sold)
Sorry to correct you, but EIS/FIS is an option to the F-11 uprocessor, hence
for 11/23, 11/23+ and 11/24 computers. I'm not aware of any CS-firmware options
for 11/03 or 11/02.
Yes, there sure was a CIS chip for the 11/23[+].
And I am still looking
I know... I have one (maybe two) KDF11-B boards with the CIS chip.
for one to upgrade one of mine. I do have the
FPF-11 floating point
processor board that alternately connects to the socket for the FIS
chip, I have a FIS chip in another processor board, but the sockets for
CIS are still vacant in both.
It was my understanding that the EIS/FIS chip is only usable with
the 11/03 (11/2, PDT) machines (and the PDT requires the dual microm
in order to make space for it). The CIS chip is a dual-wide
chip... it spans two chip spaces on the 11/23 and 11/23+ boards.
Dibol does that.
regards,
Frank Arnold
Once I get it / Should I ever get it, which
languages could make use of
it? - Assembler, of course, and COBOL, I think?
You can always do it in assembler. As for cobol or other layered
products, you probably have to use a version which has been specifically
built to use those instructions (or can detect their availability on
the fly and use them). 
9 Jan
9 Jan
10:03 a.m.
Megan wrote:
It was my understanding that the EIS/FIS chip is only
usable with the
11/03 (11/2, PDT) machines (and the PDT requires the dual microm in
order to make space for it).
Frank wrote:
Sorry to correct you, but EIS/FIS is an option to the
F-11 uprocessor,
hence for 11/23, 11/23+ and 11/24 computers.
Sorry to correct you, but Megan was right. The 11/23, 11/23+, and 11/24
have EIS as a standard part of the instruction set, and no hardware or
microcode FIS support was available. The available options were the
KTF11-AA MMU chip, KEF11-AA floating point chip (which requires the MMU
chip), the FPF11 hardware floating point board, and the KEF11-BB CIS
hybrid (containing six chips!). There apparently was an earlier KEF11-BA
CIS for the 11/23 etc., which was packaged differently.
FIS was only available as an option on the 11/03 family (KEV11) and the
11/35 and 11/40 (KE11-F).
CIS was an option on the 11/23 family (KEF-11Bx), 11/44 (KE44), and
11/74 (KE74). The KE74 should work on some late-model 11/70 systems
based on the KB11-CM CPU (vs. the standards KB11-B and KB11-C), but it
is unknown whether any KE74s were actually sold.
The 11/03 family support the KEV11 option, which adds EIS and FIS. The
11/03 can support the KUV11 writable control store, which can be used for
EIS/FIS or user-written microcode. There is no CIS option for the 11/03;
there's not enough microcode address space available to implement it.
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