Date   : Sat, 14 Aug 2010 00:07:58 +0100
From   : tom@... (Tom Seddon)
Subject: DOS filing system

On Fri, 13 Aug 2010 20:09:21 +0100, "J.G.Harston" <jgh@...>
wrote:

>Eelco Huininga wrote:
>> I made some attempts of writing a DOS filing system. IRC correctly   
>> it used two sideways RAM banks, one for the DOS-FS and one as   
>> storage for the FAT table and directory map,
>
>It wouldn't need to know anything about the FAT table and directory
>map, all it would need to do is make whatever calls the emulator
>makes to access the underlying DOS file system, and that looks after
>everything.

I've uploaded to my web site what I started for my Windows rewrite of
model-b when it was still called "beebm":

http://www.tomseddon.plus.com/beeb/beebm_fs.zip

Implements a read-only filing system. Probably not much use, but it
worked for me at the time. In the end wrote a 1770 emulation instead,
which didn't please me as much, but gave me better results in a
fraction the time.

This code is dated 14 Mar 2003; my notes suggest that I added "*DISK"
after that (to fix Spycat, in case you were wondering...) but I
couldn't find the newer code anywhere.

Scrappy documentation is supplied, but apart from that you're on your
own... sorry.

--Tom