[Simh] LGP deposit command
Bob Supnik
bob at supnik.org
Thu Mar 24 14:59:23 EDT 2011
Okay, this is a "feature" due to the fact that the LGP-30 has a 32-bit
memory word, and bit<31>, the spacer, is always zero. Because the
accumulator (A register) is a full 32b, with a working bit<31>, all
numeric displays and inputs are 8 hex digits. However, when anything is
stored in memory, whether from the console or from a program, bit<31> is
always cleared:
sim> d 10 12345678
sim> ex 10
10: 12345678
HOWEVER:
sim> d 10 01234567
sim> ex 10
10: 01234566
I'm not sure how to deal with this better, other than putting a
prominent warning in the User's Manual.
/Bob
On 1/7/2011 12:00 PM, simh-request at trailing-edge.com wrote
> Today's Topics:
>
> 1. bug reporting ? (dott.Piergiorgio)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 07 Jan 2011 11:55:10 +0100
> From: "dott.Piergiorgio"<dott.piergiorgio at fastwebnet.it>
> To: SIMH List<simh at trailing-edge.com>
> Subject: [Simh] bug reporting ?
> Message-ID:<4D26F10E.2080401 at fastwebnet.it>
> Content-Type: text/plain; charset=ISO-8859-15; format=flowed
>
> How should report a bug ? here or direct to Bob ?
>
> Anyway, seems to me that the Librascope emulation don't get correctly DE
> entry of odd numbers (a 3 decimal became a 4 and a 5 decimal became a 6
> decimal..)
>
> Best regards from Italy,
> dott. Piergiorgio.
>
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