INTL 3:770/1 3:770/3
REPLYADDR acarmony1@gmail.com
REPLYTO 3:770/3.0 UUCP
MSGID:  d5495b47
REPLY:  fea494d2
PID: SoupGate-Win32 v1.05
On Friday, February 12, 2021 at 10:27:12 AM UTC-5, pzem...@gmail.com wrote:
> Hi all, 
> 
> I figure that someone here probably knows why CBM's basic RAM always started
at $xx01 addresses, like $0801, $0401, $1001, $1c01 instead of $0800, $0400,
$1000, $1c00? 
> What is sitting in that one byte, or what role is it playing? 
> I realize that I've always taken that for granted, but never asked myself
why. Or I knew it at some point in the past and forgot. 
> 
> Cheers 
> /Philip
Well, everything does start at those addresses. Screen memory starts at $0400.
Basic starts at $0800. Technically when entering basic programs it starts
putting code into $0801 on, $0800 contains a zero and is 'unused', but $0800
is still the start of 
basic.

http://sta.c64.org/cbm64mem.html

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