Error Beeps - Need Identification of them

I have an old IBM T43 laptop which dont have a harddrive in it. When I
turn it on, I get error beeps and nothing else.

Of course without a hard drive, I only expected to see the setup screen.
(BIOS)

I am getting this: 1 3 3 1 (These are the beeps)
one beep, three beeps, three beeps, one beep.

What does this mean?
I know these beeps are like morse code and mean something.

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One other thing, (Not for the same computer)

Is there something built into XP Pro SP3 that shows how much RAM is in a
computer? I went to Control Panel - System - Device Manager. It shows
everything except the RAM. I recall back in the DOS days, there was a
command that could be typed to determine memory, but I am not sure if
that works with modern OSs, nor can I remember the command.