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ANN: ICL 1904S Emulator

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Brian W Spoor

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Jan 1, 2008, 10:26:16 AM1/1/08
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In the final hours of 2007 E6RM (Multi-Programming Operators Executive
for large 1900 computers) once again came to life, albeit briefly on the
new 1904S emulator currently being written.

The emulator is still in its early stages, not ready for even alpha test
release, after considerable effort by my colleagues.

As well as coding the emulator, we also had to learn how to generate
viable Executives, both E6RM and EWG3 (for George 3), from the tools and
sources that have been recovered, using incomplete documentation.

More information will follow om due course.

The console log from the test run:-


1904S(BB) Hardware Emulation, Version: 0.1 (Linux) Dec 31 2007 21:58:09
gcc 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
Core size (ALIMIT) = 96K, #300000


LIB. NO. / HOW MANY K? 001A/96K

L001A/EXEC 209 01A


EXEC M/C 209 ISS 01A PE 000V GRT7/08 31/12/07
NAME BB1904S TEST EXECUTIVE EDS8
ANY MODIFICATIONS? N

E6RM MARK 1 VERSION 5 (GEN 54)

DATE PLEASE? THU09SEP99
TIME PLEASE? 2202

CORE SIZE PLEASE? 96K

OVERLAY DEVICE NO.?CORE

MAG. TAPE NO.?30

LIB. NO.?001A

USING DIRECT ACCESS DEVICES ?Y

USING DISK FIND ?N

CLSD U30 EXEC PROGS /0/1 :- *3600040ET3@ 3400
CLSD U31 N/S TAPE(NO HDDR)
CLSD U32 N/S TAPE(NO HDDR)
U40 NON UDAS
U41 NON UDAS
U42 NON UDAS
22/03/00
FR
ERROR C
22/04/00
HD 30

FREE *3600040/EXEC PROGS /0/1/3400
PL

NIL
22/05/00
WH 40
NON UDAS
WH 30

FREE *3600040/EXEC PROGS /0/1/3400
WR 40
ERROR J
FI#XPJ1#TAPE
OK

FATAL ERROR: Interrupt handler entered when in EXEC mode


Best wishes for the New Year to all,
Brian

Stimpy

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Jan 1, 2008, 11:00:29 AM1/1/08
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On Tue, 1 Jan 2008 15:26:16 +0000, Brian W Spoor wrote

> In the final hours of 2007 E6RM (Multi-Programming Operators Executive
> for large 1900 computers) once again came to life, albeit briefly on the
> new 1904S emulator currently being written.
>
> The emulator is still in its early stages, not ready for even alpha test
> release, after considerable effort by my colleagues.
>
> As well as coding the emulator, we also had to learn how to generate
> viable Executives, both E6RM and EWG3 (for George 3), from the tools and
> sources that have been recovered, using incomplete documentation.
>
> More information will follow om due course.

Excellent news! Looking forward to having a 1904 running on my desktop
before long :-)

Stick with it Brian!

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