Date   : Mon, 24 Jan 2000 11:52:18 +0000 (GMT)
From   : Brian Widdas <brian@...>
Subject: Re: Warning: BBC Master not Y19C compliant

On Mon, 24 Jan 2000, Fraser, Colin J wrote:

> > -----Original Message-----
> > From: Andrew Benham [mailto:adsb@...]
> > Sent: 21 January 2000 14:30
> > To: Fraser, Colin J
> > Cc: bbc-micro@...
> > Subject: Re: [BBC-Micro] Warning: BBC Master not Y19C compliant
> > 
> > > Found a fault in the Master OS last night.
> > > It incorrectly believes the year 1900 to be a leap year.
> > > 
> > > This should mean I can render the OS Y2K compliant by 
> > replacing a '19' in
> > > the rom with a '20' - assuming the date is stored as 2 
> > digits, and TIME$
> > > always prepends the 19.
> > > Anyone know whereabouts I'll find this ?
> > 
> > http://g8fsl.tripod.com/bbc/
> 
> Thanks, for that.
> Very useful information.
> 
> If I'm going to the bother of replacing the MOS ROM in my Master, I would
> like to take the opportunity to replace some of the built-in roms that I
> never use (view, viewsheet) with ROM images I constantly load into SRAM.
> Is that possible, or are all the ROMs required as they are ? (shared
> routines ?)

The only one you need is the Terminal ROM at position 15 (ie where it is
now). I believe it contains some other code, but I can't remember off-hand
what it is.

Brian
-- 
Brian Widdas                                                   brian@...       
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